1528 lines
69 KiB
HTML
1528 lines
69 KiB
HTML
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<title>Host/Target specific installation notes for GCC</title>
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</head>
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<body lang="en">
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<h1 class="settitle" align="center">Host/Target specific installation notes for GCC</h1>
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<a name="index-Specific"></a>
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<a name="index-Specific-installation-notes"></a>
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<a name="index-Target-specific-installation"></a>
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<a name="index-Host-specific-installation"></a>
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<a name="index-Target-specific-installation-notes"></a>
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<p>Please read this document carefully <em>before</em> installing the
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GNU Compiler Collection on your machine.
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</p>
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<p>Note that this list of install notes is <em>not</em> a list of supported
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hosts or targets. Not all supported hosts and targets are listed
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here, only the ones that require host-specific or target-specific
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information have to.
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</p>
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<ul>
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<li> <a href="#aarch64-x-x">aarch64*-*-*</a>
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</li><li> <a href="#alpha-x-x">alpha*-*-*</a>
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</li><li> <a href="#amd64-x-solaris2">amd64-*-solaris2*</a>
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</li><li> <a href="#arm-x-eabi">arm-*-eabi</a>
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</li><li> <a href="#avr">avr</a>
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</li><li> <a href="#bfin">Blackfin</a>
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</li><li> <a href="#dos">DOS</a>
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</li><li> <a href="#x-x-freebsd">*-*-freebsd*</a>
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</li><li> <a href="#h8300-hms">h8300-hms</a>
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</li><li> <a href="#hppa-hp-hpux">hppa*-hp-hpux*</a>
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</li><li> <a href="#hppa-hp-hpux10">hppa*-hp-hpux10</a>
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</li><li> <a href="#hppa-hp-hpux11">hppa*-hp-hpux11</a>
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</li><li> <a href="#x-x-linux-gnu">*-*-linux-gnu</a>
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</li><li> <a href="#ix86-x-linux">i?86-*-linux*</a>
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</li><li> <a href="#ix86-x-solaris2">i?86-*-solaris2*</a>
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</li><li> <a href="#ia64-x-linux">ia64-*-linux</a>
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</li><li> <a href="#ia64-x-hpux">ia64-*-hpux*</a>
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</li><li> <a href="#x-ibm-aix">*-ibm-aix*</a>
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</li><li> <a href="#iq2000-x-elf">iq2000-*-elf</a>
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</li><li> <a href="#lm32-x-elf">lm32-*-elf</a>
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</li><li> <a href="#lm32-x-uclinux">lm32-*-uclinux</a>
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</li><li> <a href="#m32c-x-elf">m32c-*-elf</a>
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</li><li> <a href="#m32r-x-elf">m32r-*-elf</a>
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</li><li> <a href="#m68k-x-x">m68k-*-*</a>
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</li><li> <a href="#m68k-uclinux">m68k-uclinux</a>
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</li><li> <a href="#microblaze-x-elf">microblaze-*-elf</a>
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</li><li> <a href="#mips-x-x">mips-*-*</a>
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</li><li> <a href="#nds32le-x-elf">nds32le-*-elf</a>
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</li><li> <a href="#nds32be-x-elf">nds32be-*-elf</a>
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</li><li> <a href="#nvptx-x-none">nvptx-*-none</a>
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</li><li> <a href="#or1k-x-elf">or1k-*-elf</a>
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</li><li> <a href="#or1k-x-linux">or1k-*-linux</a>
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</li><li> <a href="#powerpc-x-x">powerpc*-*-*</a>
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</li><li> <a href="#powerpc-x-darwin">powerpc-*-darwin*</a>
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</li><li> <a href="#powerpc-x-elf">powerpc-*-elf</a>
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</li><li> <a href="#powerpc-x-linux-gnu">powerpc*-*-linux-gnu*</a>
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</li><li> <a href="#powerpc-x-netbsd">powerpc-*-netbsd*</a>
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</li><li> <a href="#powerpc-x-eabisim">powerpc-*-eabisim</a>
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</li><li> <a href="#powerpc-x-eabi">powerpc-*-eabi</a>
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</li><li> <a href="#powerpcle-x-elf">powerpcle-*-elf</a>
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</li><li> <a href="#powerpcle-x-eabisim">powerpcle-*-eabisim</a>
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</li><li> <a href="#powerpcle-x-eabi">powerpcle-*-eabi</a>
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</li><li> <a href="#riscv32-x-elf">riscv32-*-elf</a>
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</li><li> <a href="#riscv32-x-linux">riscv32-*-linux</a>
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</li><li> <a href="#riscv64-x-elf">riscv64-*-elf</a>
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</li><li> <a href="#riscv64-x-linux">riscv64-*-linux</a>
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</li><li> <a href="#s390-x-linux">s390-*-linux*</a>
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</li><li> <a href="#s390x-x-linux">s390x-*-linux*</a>
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</li><li> <a href="#s390x-ibm-tpf">s390x-ibm-tpf*</a>
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</li><li> <a href="#x-x-solaris2">*-*-solaris2*</a>
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</li><li> <a href="#sparc-x-x">sparc*-*-*</a>
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</li><li> <a href="#sparc-sun-solaris2">sparc-sun-solaris2*</a>
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</li><li> <a href="#sparc-x-linux">sparc-*-linux*</a>
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</li><li> <a href="#sparc64-x-solaris2">sparc64-*-solaris2*</a>
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</li><li> <a href="#sparcv9-x-solaris2">sparcv9-*-solaris2*</a>
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</li><li> <a href="#c6x-x-x">c6x-*-*</a>
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</li><li> <a href="#tilegx-x-linux">tilegx-*-linux*</a>
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</li><li> <a href="#tilegxbe-x-linux">tilegxbe-*-linux*</a>
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</li><li> <a href="#tilepro-x-linux">tilepro-*-linux*</a>
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</li><li> <a href="#visium-x-elf">visium-*-elf</a>
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</li><li> <a href="#x-x-vxworks">*-*-vxworks*</a>
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</li><li> <a href="#x86-64-x-x">x86_64-*-*, amd64-*-*</a>
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</li><li> <a href="#x86-64-x-solaris2">x86_64-*-solaris2*</a>
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</li><li> <a href="#xtensa-x-elf">xtensa*-*-elf</a>
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</li><li> <a href="#xtensa-x-linux">xtensa*-*-linux*</a>
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</li><li> <a href="#windows">Microsoft Windows</a>
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</li><li> <a href="#x-x-cygwin">*-*-cygwin</a>
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</li><li> <a href="#x-x-mingw32">*-*-mingw32</a>
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</li><li> <a href="#os2">OS/2</a>
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</li><li> <a href="#older">Older systems</a>
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</li></ul>
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<ul>
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<li> <a href="#elf">all ELF targets</a> (SVR4, Solaris 2, etc.)
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</li></ul>
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<!-- -------- host/target specific issues start here ---------------- -->
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<hr />
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<a name="aarch64-x-x"></a><a name="aarch64*-*-*"></a>
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<h3 class="heading">aarch64*-*-*</h3>
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<p>Binutils pre 2.24 does not have support for selecting <samp>-mabi</samp> and
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does not support ILP32. If it is used to build GCC 4.9 or later, GCC will
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not support option <samp>-mabi=ilp32</samp>.
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</p>
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<p>To enable a workaround for the Cortex-A53 erratum number 835769 by default
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(for all CPUs regardless of -mcpu option given) at configure time use the
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<samp>--enable-fix-cortex-a53-835769</samp> option. This will enable the fix by
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default and can be explicitly disabled during compilation by passing the
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<samp>-mno-fix-cortex-a53-835769</samp> option. Conversely,
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<samp>--disable-fix-cortex-a53-835769</samp> will disable the workaround by
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default. The workaround is disabled by default if neither of
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<samp>--enable-fix-cortex-a53-835769</samp> or
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<samp>--disable-fix-cortex-a53-835769</samp> is given at configure time.
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</p>
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<p>To enable a workaround for the Cortex-A53 erratum number 843419 by default
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(for all CPUs regardless of -mcpu option given) at configure time use the
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<samp>--enable-fix-cortex-a53-843419</samp> option. This workaround is applied at
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link time. Enabling the workaround will cause GCC to pass the relevant option
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to the linker. It can be explicitly disabled during compilation by passing the
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<samp>-mno-fix-cortex-a53-843419</samp> option. Conversely,
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<samp>--disable-fix-cortex-a53-843419</samp> will disable the workaround by default.
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The workaround is disabled by default if neither of
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<samp>--enable-fix-cortex-a53-843419</samp> or
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<samp>--disable-fix-cortex-a53-843419</samp> is given at configure time.
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</p>
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<p>To enable Branch Target Identification Mechanism and Return Address Signing by
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default at configure time use the <samp>--enable-standard-branch-protection</samp>
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option. This is equivalent to having <samp>-mbranch-protection=standard</samp>
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during compilation. This can be explicitly disabled during compilation by
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passing the <samp>-mbranch-protection=none</samp> option which turns off all
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types of branch protections. Conversely,
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<samp>--disable-standard-branch-protection</samp> will disable both the
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protections by default. This mechanism is turned off by default if neither
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of the options are given at configure time.
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</p>
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<hr />
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<a name="alpha-x-x"></a><a name="alpha*-*-*"></a>
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<h3 class="heading">alpha*-*-*</h3>
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<p>This section contains general configuration information for all
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Alpha-based platforms using ELF. In addition to reading this
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section, please read all other sections that match your target.
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</p>
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<hr />
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<a name="amd64-x-solaris2"></a><a name="amd64-*-solaris2*"></a>
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<h3 class="heading">amd64-*-solaris2*</h3>
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<p>This is a synonym for ‘<samp>x86_64-*-solaris2*</samp>’.
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</p>
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<hr />
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<a name="amdgcn-x-amdhsa"></a><a name="amdgcn-*-amdhsa"></a>
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<h3 class="heading">amdgcn-*-amdhsa</h3>
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<p>AMD GCN GPU target.
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</p>
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<p>Instead of GNU Binutils, you will need to install LLVM 6, or later, and copy
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<samp>bin/llvm-mc</samp> to <samp>amdgcn-amdhsa/bin/as</samp>,
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<samp>bin/lld</samp> to <samp>amdgcn-amdhsa/bin/ld</samp>,
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<samp>bin/llvm-nm</samp> to <samp>amdgcn-amdhsa/bin/nm</samp>, and
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<samp>bin/llvm-ar</samp> to both <samp>bin/amdgcn-amdhsa-ar</samp> and
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<samp>bin/amdgcn-amdhsa-ranlib</samp>.
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</p>
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<p>Use Newlib (2019-01-16, or newer).
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</p>
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<p>To run the binaries, install the HSA Runtime from the
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<a href="https://rocm.github.io">ROCm Platform</a>, and use
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<samp>libexec/gcc/amdhsa-amdhsa/<var>version</var>/gcn-run</samp> to launch them
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on the GPU.
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</p>
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<hr />
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<a name="arc-x-elf32"></a><a name="arc-*-elf32"></a>
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<h3 class="heading">arc-*-elf32</h3>
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<p>Use ‘<samp>configure --target=arc-elf32 --with-cpu=<var>cpu</var> --enable-languages="c,c++"</samp>’
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to configure GCC, with <var>cpu</var> being one of ‘<samp>arc600</samp>’, ‘<samp>arc601</samp>’,
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or ‘<samp>arc700</samp>’.
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</p>
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<hr />
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<a name="arc-linux-uclibc"></a><a name="arc-linux-uclibc-1"></a>
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<h3 class="heading">arc-linux-uclibc</h3>
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<p>Use ‘<samp>configure --target=arc-linux-uclibc --with-cpu=arc700 --enable-languages="c,c++"</samp>’ to configure GCC.
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</p>
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<hr />
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<a name="arm-x-eabi"></a><a name="arm-*-eabi"></a>
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<h3 class="heading">arm-*-eabi</h3>
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<p>ARM-family processors.
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</p>
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<p>Building the Ada frontend commonly fails (an infinite loop executing
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<code>xsinfo</code>) if the host compiler is GNAT 4.8. Host compilers built from the
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GNAT 4.6, 4.9 or 5 release branches are known to succeed.
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</p>
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<hr />
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<a name="avr"></a><a name="avr-1"></a>
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<h3 class="heading">avr</h3>
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<p>ATMEL AVR-family micro controllers. These are used in embedded
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applications. There are no standard Unix configurations.
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See “AVR Options” in the main manual
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for the list of supported MCU types.
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</p>
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<p>Use ‘<samp>configure --target=avr --enable-languages="c"</samp>’ to configure GCC.
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</p>
|
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<p>Further installation notes and other useful information about AVR tools
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can also be obtained from:
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</p>
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<ul>
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<li> <a href="http://www.nongnu.org/avr/">http://www.nongnu.org/avr/</a>
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</li><li> <a href="http://www.amelek.gda.pl/avr/">http://www.amelek.gda.pl/avr/</a>
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</li></ul>
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<p>The following error:
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</p><div class="smallexample">
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<pre class="smallexample">Error: register required
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</pre></div>
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<p>indicates that you should upgrade to a newer version of the binutils.
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</p>
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<hr />
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<a name="bfin"></a><a name="Blackfin"></a>
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<h3 class="heading">Blackfin</h3>
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<p>The Blackfin processor, an Analog Devices DSP.
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See “Blackfin Options” in the main manual
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</p>
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<p>More information, and a version of binutils with support for this processor,
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are available at <a href="https://sourceforge.net/projects/adi-toolchain/">https://sourceforge.net/projects/adi-toolchain/</a>.
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</p>
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<hr />
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<a name="cr16"></a><a name="CR16"></a>
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<h3 class="heading">CR16</h3>
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<p>The CR16 CompactRISC architecture is a 16-bit architecture. This
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architecture is used in embedded applications.
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</p>
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<p>See “CR16 Options” in the main manual for a list of CR16-specific options.
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</p>
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<p>Use ‘<samp>configure --target=cr16-elf --enable-languages=c,c++</samp>’ to configure
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GCC for building a CR16 elf cross-compiler.
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</p>
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<p>Use ‘<samp>configure --target=cr16-uclinux --enable-languages=c,c++</samp>’ to
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configure GCC for building a CR16 uclinux cross-compiler.
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</p>
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<hr />
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<a name="cris"></a><a name="CRIS"></a>
|
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<h3 class="heading">CRIS</h3>
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<p>CRIS is a CPU architecture in Axis Communications systems-on-a-chip, for
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example the ETRAX series. These are used in embedded applications.
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</p>
|
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<p>See “CRIS Options” in the main manual
|
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for a list of CRIS-specific options.
|
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</p>
|
|
<p>Use ‘<samp>configure --target=cris-elf</samp>’ to configure GCC for building
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a cross-compiler for CRIS.
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<hr />
|
|
<a name="dos"></a></p><a name="DOS"></a>
|
|
<h3 class="heading">DOS</h3>
|
|
<p>Please have a look at the <a href="binaries.html">binaries page</a>.
|
|
</p>
|
|
<p>You cannot install GCC by itself on MSDOS; it will not compile under
|
|
any MSDOS compiler except itself. You need to get the complete
|
|
compilation package DJGPP, which includes binaries as well as sources,
|
|
and includes all the necessary compilation tools and libraries.
|
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</p>
|
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<hr />
|
|
<a name="epiphany-x-elf"></a><a name="epiphany-*-elf"></a>
|
|
<h3 class="heading">epiphany-*-elf</h3>
|
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<p>Adapteva Epiphany.
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This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="x-x-freebsd"></a><a name="g_t*-*-freebsd*"></a>
|
|
<h3 class="heading">*-*-freebsd*</h3>
|
|
<p>In order to better utilize FreeBSD base system functionality and match
|
|
the configuration of the system compiler, GCC 4.5 and above as well as
|
|
GCC 4.4 past 2010-06-20 leverage SSP support in libc (which is present
|
|
on FreeBSD 7 or later) and the use of <code>__cxa_atexit</code> by default
|
|
(on FreeBSD 6 or later). The use of <code>dl_iterate_phdr</code> inside
|
|
<samp>libgcc_s.so.1</samp> and boehm-gc (on FreeBSD 7 or later) is enabled
|
|
by GCC 4.5 and above.
|
|
</p>
|
|
<p>We support FreeBSD using the ELF file format with DWARF 2 debugging
|
|
for all CPU architectures. You may use <samp>-gstabs</samp> instead of
|
|
<samp>-g</samp>, if you really want the old debugging format. There are
|
|
no known issues with mixing object files and libraries with different
|
|
debugging formats. Otherwise, this release of GCC should now match
|
|
more of the configuration used in the stock FreeBSD configuration of
|
|
GCC. In particular, <samp>--enable-threads</samp> is now configured by
|
|
default. However, as a general user, do not attempt to replace the
|
|
system compiler with this release. Known to bootstrap and check with
|
|
good results on FreeBSD 7.2-STABLE. In the past, known to bootstrap
|
|
and check with good results on FreeBSD 3.0, 3.4, 4.0, 4.2, 4.3, 4.4,
|
|
4.5, 4.8, 4.9 and 5-CURRENT.
|
|
</p>
|
|
<p>The version of binutils installed in <samp>/usr/bin</samp> probably works
|
|
with this release of GCC. Bootstrapping against the latest GNU
|
|
binutils and/or the version found in <samp>/usr/ports/devel/binutils</samp> has
|
|
been known to enable additional features and improve overall testsuite
|
|
results. However, it is currently known that boehm-gc may not configure
|
|
properly on FreeBSD prior to the FreeBSD 7.0 release with GNU binutils
|
|
after 2.16.1.
|
|
</p>
|
|
<hr />
|
|
<a name="ft32-x-elf"></a><a name="ft32-*-elf"></a>
|
|
<h3 class="heading">ft32-*-elf</h3>
|
|
<p>The FT32 processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="h8300-hms"></a><a name="h8300-hms-1"></a>
|
|
<h3 class="heading">h8300-hms</h3>
|
|
<p>Renesas H8/300 series of processors.
|
|
</p>
|
|
<p>Please have a look at the <a href="binaries.html">binaries page</a>.
|
|
</p>
|
|
<p>The calling convention and structure layout has changed in release 2.6.
|
|
All code must be recompiled. The calling convention now passes the
|
|
first three arguments in function calls in registers. Structures are no
|
|
longer a multiple of 2 bytes.
|
|
</p>
|
|
<hr />
|
|
<a name="hppa-hp-hpux"></a><a name="hppa*-hp-hpux*"></a>
|
|
<h3 class="heading">hppa*-hp-hpux*</h3>
|
|
<p>Support for HP-UX version 9 and older was discontinued in GCC 3.4.
|
|
</p>
|
|
<p>We require using gas/binutils on all hppa platforms. Version 2.19 or
|
|
later is recommended.
|
|
</p>
|
|
<p>It may be helpful to configure GCC with the
|
|
<a href="./configure.html#with-gnu-as"><samp>--with-gnu-as</samp></a> and
|
|
<samp>--with-as=…</samp> options to ensure that GCC can find GAS.
|
|
</p>
|
|
<p>The HP assembler should not be used with GCC. It is rarely tested and may
|
|
not work. It shouldn’t be used with any languages other than C due to its
|
|
many limitations.
|
|
</p>
|
|
<p>Specifically, <samp>-g</samp> does not work (HP-UX uses a peculiar debugging
|
|
format which GCC does not know about). It also inserts timestamps
|
|
into each object file it creates, causing the 3-stage comparison test to
|
|
fail during a bootstrap. You should be able to continue by saying
|
|
‘<samp>make all-host all-target</samp>’ after getting the failure from ‘<samp>make</samp>’.
|
|
</p>
|
|
<p>Various GCC features are not supported. For example, it does not support weak
|
|
symbols or alias definitions. As a result, explicit template instantiations
|
|
are required when using C++. This makes it difficult if not impossible to
|
|
build many C++ applications.
|
|
</p>
|
|
<p>There are two default scheduling models for instructions. These are
|
|
PROCESSOR_7100LC and PROCESSOR_8000. They are selected from the pa-risc
|
|
architecture specified for the target machine when configuring.
|
|
PROCESSOR_8000 is the default. PROCESSOR_7100LC is selected when
|
|
the target is a ‘<samp>hppa1*</samp>’ machine.
|
|
</p>
|
|
<p>The PROCESSOR_8000 model is not well suited to older processors. Thus,
|
|
it is important to completely specify the machine architecture when
|
|
configuring if you want a model other than PROCESSOR_8000. The macro
|
|
TARGET_SCHED_DEFAULT can be defined in BOOT_CFLAGS if a different
|
|
default scheduling model is desired.
|
|
</p>
|
|
<p>As of GCC 4.0, GCC uses the UNIX 95 namespace for HP-UX 10.10
|
|
through 11.00, and the UNIX 98 namespace for HP-UX 11.11 and later.
|
|
This namespace change might cause problems when bootstrapping with
|
|
an earlier version of GCC or the HP compiler as essentially the same
|
|
namespace is required for an entire build. This problem can be avoided
|
|
in a number of ways. With HP cc, <code>UNIX_STD</code> can be set to ‘<samp>95</samp>’
|
|
or ‘<samp>98</samp>’. Another way is to add an appropriate set of predefines
|
|
to <code>CC</code>. The description for the <samp>munix=</samp> option contains
|
|
a list of the predefines used with each standard.
|
|
</p>
|
|
<p>More specific information to ‘<samp>hppa*-hp-hpux*</samp>’ targets follows.
|
|
</p>
|
|
<hr />
|
|
<a name="hppa-hp-hpux10"></a><a name="hppa*-hp-hpux10"></a>
|
|
<h3 class="heading">hppa*-hp-hpux10</h3>
|
|
<p>For hpux10.20, we <em>highly</em> recommend you pick up the latest sed patch
|
|
<code>PHCO_19798</code> from HP.
|
|
</p>
|
|
<p>The C++ ABI has changed incompatibly in GCC 4.0. COMDAT subspaces are
|
|
used for one-only code and data. This resolves many of the previous
|
|
problems in using C++ on this target. However, the ABI is not compatible
|
|
with the one implemented under HP-UX 11 using secondary definitions.
|
|
</p>
|
|
<hr />
|
|
<a name="hppa-hp-hpux11"></a><a name="hppa*-hp-hpux11"></a>
|
|
<h3 class="heading">hppa*-hp-hpux11</h3>
|
|
<p>GCC 3.0 and up support HP-UX 11. GCC 2.95.x is not supported and cannot
|
|
be used to compile GCC 3.0 and up.
|
|
</p>
|
|
<p>The libffi library haven’t been ported to 64-bit HP-UX and doesn’t build.
|
|
</p>
|
|
<p>Refer to <a href="binaries.html">binaries</a> for information about obtaining
|
|
precompiled GCC binaries for HP-UX. Precompiled binaries must be obtained
|
|
to build the Ada language as it cannot be bootstrapped using C. Ada is
|
|
only available for the 32-bit PA-RISC runtime.
|
|
</p>
|
|
<p>Starting with GCC 3.4 an ISO C compiler is required to bootstrap. The
|
|
bundled compiler supports only traditional C; you will need either HP’s
|
|
unbundled compiler, or a binary distribution of GCC.
|
|
</p>
|
|
<p>It is possible to build GCC 3.3 starting with the bundled HP compiler,
|
|
but the process requires several steps. GCC 3.3 can then be used to
|
|
build later versions.
|
|
</p>
|
|
<p>There are several possible approaches to building the distribution.
|
|
Binutils can be built first using the HP tools. Then, the GCC
|
|
distribution can be built. The second approach is to build GCC
|
|
first using the HP tools, then build binutils, then rebuild GCC.
|
|
There have been problems with various binary distributions, so it
|
|
is best not to start from a binary distribution.
|
|
</p>
|
|
<p>On 64-bit capable systems, there are two distinct targets. Different
|
|
installation prefixes must be used if both are to be installed on
|
|
the same system. The ‘<samp>hppa[1-2]*-hp-hpux11*</samp>’ target generates code
|
|
for the 32-bit PA-RISC runtime architecture and uses the HP linker.
|
|
The ‘<samp>hppa64-hp-hpux11*</samp>’ target generates 64-bit code for the
|
|
PA-RISC 2.0 architecture.
|
|
</p>
|
|
<p>The script config.guess now selects the target type based on the compiler
|
|
detected during configuration. You must define <code>PATH</code> or <code>CC</code> so
|
|
that configure finds an appropriate compiler for the initial bootstrap.
|
|
When <code>CC</code> is used, the definition should contain the options that are
|
|
needed whenever <code>CC</code> is used.
|
|
</p>
|
|
<p>Specifically, options that determine the runtime architecture must be
|
|
in <code>CC</code> to correctly select the target for the build. It is also
|
|
convenient to place many other compiler options in <code>CC</code>. For example,
|
|
<code>CC="cc -Ac +DA2.0W -Wp,-H16376 -D_CLASSIC_TYPES -D_HPUX_SOURCE"</code>
|
|
can be used to bootstrap the GCC 3.3 branch with the HP compiler in
|
|
64-bit K&R/bundled mode. The <samp>+DA2.0W</samp> option will result in
|
|
the automatic selection of the ‘<samp>hppa64-hp-hpux11*</samp>’ target. The
|
|
macro definition table of cpp needs to be increased for a successful
|
|
build with the HP compiler. _CLASSIC_TYPES and _HPUX_SOURCE need to
|
|
be defined when building with the bundled compiler, or when using the
|
|
<samp>-Ac</samp> option. These defines aren’t necessary with <samp>-Ae</samp>.
|
|
</p>
|
|
<p>It is best to explicitly configure the ‘<samp>hppa64-hp-hpux11*</samp>’ target
|
|
with the <samp>--with-ld=…</samp> option. This overrides the standard
|
|
search for ld. The two linkers supported on this target require different
|
|
commands. The default linker is determined during configuration. As a
|
|
result, it’s not possible to switch linkers in the middle of a GCC build.
|
|
This has been reported to sometimes occur in unified builds of binutils
|
|
and GCC.
|
|
</p>
|
|
<p>A recent linker patch must be installed for the correct operation of
|
|
GCC 3.3 and later. <code>PHSS_26559</code> and <code>PHSS_24304</code> are the
|
|
oldest linker patches that are known to work. They are for HP-UX
|
|
11.00 and 11.11, respectively. <code>PHSS_24303</code>, the companion to
|
|
<code>PHSS_24304</code>, might be usable but it hasn’t been tested. These
|
|
patches have been superseded. Consult the HP patch database to obtain
|
|
the currently recommended linker patch for your system.
|
|
</p>
|
|
<p>The patches are necessary for the support of weak symbols on the
|
|
32-bit port, and for the running of initializers and finalizers. Weak
|
|
symbols are implemented using SOM secondary definition symbols. Prior
|
|
to HP-UX 11, there are bugs in the linker support for secondary symbols.
|
|
The patches correct a problem of linker core dumps creating shared
|
|
libraries containing secondary symbols, as well as various other
|
|
linking issues involving secondary symbols.
|
|
</p>
|
|
<p>GCC 3.3 uses the ELF DT_INIT_ARRAY and DT_FINI_ARRAY capabilities to
|
|
run initializers and finalizers on the 64-bit port. The 32-bit port
|
|
uses the linker <samp>+init</samp> and <samp>+fini</samp> options for the same
|
|
purpose. The patches correct various problems with the +init/+fini
|
|
options, including program core dumps. Binutils 2.14 corrects a
|
|
problem on the 64-bit port resulting from HP’s non-standard use of
|
|
the .init and .fini sections for array initializers and finalizers.
|
|
</p>
|
|
<p>Although the HP and GNU linkers are both supported for the
|
|
‘<samp>hppa64-hp-hpux11*</samp>’ target, it is strongly recommended that the
|
|
HP linker be used for link editing on this target.
|
|
</p>
|
|
<p>At this time, the GNU linker does not support the creation of long
|
|
branch stubs. As a result, it cannot successfully link binaries
|
|
containing branch offsets larger than 8 megabytes. In addition,
|
|
there are problems linking shared libraries, linking executables
|
|
with <samp>-static</samp>, and with dwarf2 unwind and exception support.
|
|
It also doesn’t provide stubs for internal calls to global functions
|
|
in shared libraries, so these calls cannot be overloaded.
|
|
</p>
|
|
<p>The HP dynamic loader does not support GNU symbol versioning, so symbol
|
|
versioning is not supported. It may be necessary to disable symbol
|
|
versioning with <samp>--disable-symvers</samp> when using GNU ld.
|
|
</p>
|
|
<p>POSIX threads are the default. The optional DCE thread library is not
|
|
supported, so <samp>--enable-threads=dce</samp> does not work.
|
|
</p>
|
|
<hr />
|
|
<a name="x-x-linux-gnu"></a><a name="g_t*-*-linux-gnu"></a>
|
|
<h3 class="heading">*-*-linux-gnu</h3>
|
|
<p>The <code>.init_array</code> and <code>.fini_array</code> sections are enabled
|
|
unconditionally which requires at least glibc 2.1 and binutils 2.12.
|
|
</p>
|
|
<p>Versions of libstdc++-v3 starting with 3.2.1 require bug fixes present
|
|
in glibc 2.2.5 and later. More information is available in the
|
|
libstdc++-v3 documentation.
|
|
</p>
|
|
<hr />
|
|
<a name="ix86-x-linux"></a><a name="i_003f86-*-linux*"></a>
|
|
<h3 class="heading">i?86-*-linux*</h3>
|
|
<p>As of GCC 3.3, binutils 2.13.1 or later is required for this platform.
|
|
See <a href="https://gcc.gnu.org/PR10877">bug 10877</a> for more information.
|
|
</p>
|
|
<p>If you receive Signal 11 errors when building on GNU/Linux, then it is
|
|
possible you have a hardware problem. Further information on this can be
|
|
found on <a href="https://www.bitwizard.nl/sig11/">www.bitwizard.nl</a>.
|
|
</p>
|
|
<hr />
|
|
<a name="ix86-x-solaris2"></a><a name="i_003f86-*-solaris2*"></a>
|
|
<h3 class="heading">i?86-*-solaris2*</h3>
|
|
<p>Use this for Solaris 11.3 or later on x86 and x86-64 systems. Starting
|
|
with GCC 4.7, there is also a 64-bit ‘<samp>amd64-*-solaris2*</samp>’ or
|
|
‘<samp>x86_64-*-solaris2*</samp>’ configuration that corresponds to
|
|
‘<samp>sparcv9-sun-solaris2*</samp>’.
|
|
</p>
|
|
<p>It is recommended that you configure GCC to use the GNU assembler. The
|
|
versions included in Solaris 11.3, from GNU binutils 2.23.1 or
|
|
newer (available as <samp>/usr/bin/gas</samp> and
|
|
<samp>/usr/gnu/bin/as</samp>), work fine. The current version, from GNU
|
|
binutils 2.34, is known to work. Recent versions of the Solaris assembler in
|
|
<samp>/usr/bin/as</samp> work almost as well, though.
|
|
</p>
|
|
<p>For linking, the Solaris linker is preferred. If you want to use the GNU
|
|
linker instead, the version in Solaris 11.3, from GNU binutils 2.23.1 or
|
|
newer (in <samp>/usr/gnu/bin/ld</samp> and <samp>/usr/bin/gld</samp>), works,
|
|
as does the latest version, from GNU binutils 2.34.
|
|
</p>
|
|
<p>To use GNU <code>as</code>, configure with the options
|
|
<samp>--with-gnu-as --with-as=/usr/gnu/bin/as</samp>. It may be necessary
|
|
to configure with <samp>--without-gnu-ld --with-ld=/usr/ccs/bin/ld</samp> to
|
|
guarantee use of Solaris <code>ld</code>.
|
|
</p>
|
|
<hr />
|
|
<a name="ia64-x-linux"></a><a name="ia64-*-linux"></a>
|
|
<h3 class="heading">ia64-*-linux</h3>
|
|
<p>IA-64 processor (also known as IPF, or Itanium Processor Family)
|
|
running GNU/Linux.
|
|
</p>
|
|
<p>If you are using the installed system libunwind library with
|
|
<samp>--with-system-libunwind</samp>, then you must use libunwind 0.98 or
|
|
later.
|
|
</p>
|
|
<hr />
|
|
<a name="ia64-x-hpux"></a><a name="ia64-*-hpux*"></a>
|
|
<h3 class="heading">ia64-*-hpux*</h3>
|
|
<p>Building GCC on this target requires the GNU Assembler. The bundled HP
|
|
assembler will not work. To prevent GCC from using the wrong assembler,
|
|
the option <samp>--with-gnu-as</samp> may be necessary.
|
|
</p>
|
|
<p>The GCC libunwind library has not been ported to HPUX. This means that for
|
|
GCC versions 3.2.3 and earlier, <samp>--enable-libunwind-exceptions</samp>
|
|
is required to build GCC. For GCC 3.3 and later, this is the default.
|
|
For gcc 3.4.3 and later, <samp>--enable-libunwind-exceptions</samp> is
|
|
removed and the system libunwind library will always be used.
|
|
</p>
|
|
<hr />
|
|
<!-- rs6000-ibm-aix*, powerpc-ibm-aix* -->
|
|
<a name="x-ibm-aix"></a><a name="g_t*-ibm-aix*"></a>
|
|
<h3 class="heading">*-ibm-aix*</h3>
|
|
<p>Support for AIX version 3 and older was discontinued in GCC 3.4.
|
|
Support for AIX version 4.2 and older was discontinued in GCC 4.5.
|
|
</p>
|
|
<p>“out of memory” bootstrap failures may indicate a problem with
|
|
process resource limits (ulimit). Hard limits are configured in the
|
|
<samp>/etc/security/limits</samp> system configuration file.
|
|
</p>
|
|
<p>GCC 4.9 and above require a C++ compiler for bootstrap. IBM VAC++ / xlC
|
|
cannot bootstrap GCC. xlc can bootstrap an older version of GCC and
|
|
G++ can bootstrap recent releases of GCC.
|
|
</p>
|
|
<p>GCC can bootstrap with recent versions of IBM XLC, but bootstrapping
|
|
with an earlier release of GCC is recommended. Bootstrapping with XLC
|
|
requires a larger data segment, which can be enabled through the
|
|
<var>LDR_CNTRL</var> environment variable, e.g.,
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">% LDR_CNTRL=MAXDATA=0x50000000
|
|
% export LDR_CNTRL
|
|
</pre></div>
|
|
|
|
<p>One can start with a pre-compiled version of GCC to build from
|
|
sources. One may delete GCC’s “fixed” header files when starting
|
|
with a version of GCC built for an earlier release of AIX.
|
|
</p>
|
|
<p>To speed up the configuration phases of bootstrapping and installing GCC,
|
|
one may use GNU Bash instead of AIX <code>/bin/sh</code>, e.g.,
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">% CONFIG_SHELL=/opt/freeware/bin/bash
|
|
% export CONFIG_SHELL
|
|
</pre></div>
|
|
|
|
<p>and then proceed as described in <a href="build.html">the build
|
|
instructions</a>, where we strongly recommend specifying an absolute path
|
|
to invoke <var>srcdir</var>/configure.
|
|
</p>
|
|
<p>Because GCC on AIX is built as a 32-bit executable by default,
|
|
(although it can generate 64-bit programs) the GMP and MPFR libraries
|
|
required by gfortran must be 32-bit libraries. Building GMP and MPFR
|
|
as static archive libraries works better than shared libraries.
|
|
</p>
|
|
<p>Errors involving <code>alloca</code> when building GCC generally are due
|
|
to an incorrect definition of <code>CC</code> in the Makefile or mixing files
|
|
compiled with the native C compiler and GCC. During the stage1 phase of
|
|
the build, the native AIX compiler <strong>must</strong> be invoked as <code>cc</code>
|
|
(not <code>xlc</code>). Once <code>configure</code> has been informed of
|
|
<code>xlc</code>, one needs to use ‘<samp>make distclean</samp>’ to remove the
|
|
configure cache files and ensure that <code>CC</code> environment variable
|
|
does not provide a definition that will confuse <code>configure</code>.
|
|
If this error occurs during stage2 or later, then the problem most likely
|
|
is the version of Make (see above).
|
|
</p>
|
|
<p>The native <code>as</code> and <code>ld</code> are recommended for
|
|
bootstrapping on AIX. The GNU Assembler, GNU Linker, and GNU
|
|
Binutils version 2.20 is the minimum level that supports bootstrap on
|
|
AIX 5. The GNU Assembler has not been updated to support AIX 6 or
|
|
AIX 7. The native AIX tools do interoperate with GCC.
|
|
</p>
|
|
<p>AIX 7.1 added partial support for DWARF debugging, but full support
|
|
requires AIX 7.1 TL03 SP7 that supports additional DWARF sections and
|
|
fixes a bug in the assembler. AIX 7.1 TL03 SP5 distributed a version
|
|
of libm.a missing important symbols; a fix for IV77796 will be
|
|
included in SP6.
|
|
</p>
|
|
<p>AIX 5.3 TL10, AIX 6.1 TL05 and AIX 7.1 TL00 introduced an AIX
|
|
assembler change that sometimes produces corrupt assembly files
|
|
causing AIX linker errors. The bug breaks GCC bootstrap on AIX and
|
|
can cause compilation failures with existing GCC installations. An
|
|
AIX iFix for AIX 5.3 is available (APAR IZ98385 for AIX 5.3 TL10, APAR
|
|
IZ98477 for AIX 5.3 TL11 and IZ98134 for AIX 5.3 TL12). AIX 5.3 TL11 SP8,
|
|
AIX 5.3 TL12 SP5, AIX 6.1 TL04 SP11, AIX 6.1 TL05 SP7, AIX 6.1 TL06 SP6,
|
|
AIX 6.1 TL07 and AIX 7.1 TL01 should include the fix.
|
|
</p>
|
|
<p>Building <samp>libstdc++.a</samp> requires a fix for an AIX Assembler bug
|
|
APAR IY26685 (AIX 4.3) or APAR IY25528 (AIX 5.1). It also requires a
|
|
fix for another AIX Assembler bug and a co-dependent AIX Archiver fix
|
|
referenced as APAR IY53606 (AIX 5.2) or as APAR IY54774 (AIX 5.1)
|
|
</p>
|
|
<a name="TransferAixShobj"></a><p>‘<samp>libstdc++</samp>’ in GCC 3.4 increments the major version number of the
|
|
shared object and GCC installation places the <samp>libstdc++.a</samp>
|
|
shared library in a common location which will overwrite the and GCC
|
|
3.3 version of the shared library. Applications either need to be
|
|
re-linked against the new shared library or the GCC 3.1 and GCC 3.3
|
|
versions of the ‘<samp>libstdc++</samp>’ shared object needs to be available
|
|
to the AIX runtime loader. The GCC 3.1 ‘<samp>libstdc++.so.4</samp>’, if
|
|
present, and GCC 3.3 ‘<samp>libstdc++.so.5</samp>’ shared objects can be
|
|
installed for runtime dynamic loading using the following steps to set
|
|
the ‘<samp>F_LOADONLY</samp>’ flag in the shared object for <em>each</em>
|
|
multilib <samp>libstdc++.a</samp> installed:
|
|
</p>
|
|
<p>Extract the shared objects from the currently installed
|
|
<samp>libstdc++.a</samp> archive:
|
|
</p><div class="smallexample">
|
|
<pre class="smallexample">% ar -x libstdc++.a libstdc++.so.4 libstdc++.so.5
|
|
</pre></div>
|
|
|
|
<p>Enable the ‘<samp>F_LOADONLY</samp>’ flag so that the shared object will be
|
|
available for runtime dynamic loading, but not linking:
|
|
</p><div class="smallexample">
|
|
<pre class="smallexample">% strip -e libstdc++.so.4 libstdc++.so.5
|
|
</pre></div>
|
|
|
|
<p>Archive the runtime-only shared object in the GCC 3.4
|
|
<samp>libstdc++.a</samp> archive:
|
|
</p><div class="smallexample">
|
|
<pre class="smallexample">% ar -q libstdc++.a libstdc++.so.4 libstdc++.so.5
|
|
</pre></div>
|
|
|
|
<p>Eventually, the
|
|
<a href="./configure.html#WithAixSoname"><samp>--with-aix-soname=svr4</samp></a>
|
|
configure option may drop the need for this procedure for libraries that
|
|
support it.
|
|
</p>
|
|
<p>Linking executables and shared libraries may produce warnings of
|
|
duplicate symbols. The assembly files generated by GCC for AIX always
|
|
have included multiple symbol definitions for certain global variable
|
|
and function declarations in the original program. The warnings should
|
|
not prevent the linker from producing a correct library or runnable
|
|
executable.
|
|
</p>
|
|
<p>AIX 4.3 utilizes a “large format” archive to support both 32-bit and
|
|
64-bit object modules. The routines provided in AIX 4.3.0 and AIX 4.3.1
|
|
to parse archive libraries did not handle the new format correctly.
|
|
These routines are used by GCC and result in error messages during
|
|
linking such as “not a COFF file”. The version of the routines shipped
|
|
with AIX 4.3.1 should work for a 32-bit environment. The <samp>-g</samp>
|
|
option of the archive command may be used to create archives of 32-bit
|
|
objects using the original “small format”. A correct version of the
|
|
routines is shipped with AIX 4.3.2 and above.
|
|
</p>
|
|
<p>Some versions of the AIX binder (linker) can fail with a relocation
|
|
overflow severe error when the <samp>-bbigtoc</samp> option is used to link
|
|
GCC-produced object files into an executable that overflows the TOC. A fix
|
|
for APAR IX75823 (OVERFLOW DURING LINK WHEN USING GCC AND -BBIGTOC) is
|
|
available from IBM Customer Support and from its
|
|
<a href="https://techsupport.services.ibm.com/">techsupport.services.ibm.com</a>
|
|
website as PTF U455193.
|
|
</p>
|
|
<p>The AIX 4.3.2.1 linker (bos.rte.bind_cmds Level 4.3.2.1) will dump core
|
|
with a segmentation fault when invoked by any version of GCC. A fix for
|
|
APAR IX87327 is available from IBM Customer Support and from its
|
|
<a href="https://techsupport.services.ibm.com/">techsupport.services.ibm.com</a>
|
|
website as PTF U461879. This fix is incorporated in AIX 4.3.3 and above.
|
|
</p>
|
|
<p>The initial assembler shipped with AIX 4.3.0 generates incorrect object
|
|
files. A fix for APAR IX74254 (64BIT DISASSEMBLED OUTPUT FROM COMPILER FAILS
|
|
TO ASSEMBLE/BIND) is available from IBM Customer Support and from its
|
|
<a href="https://techsupport.services.ibm.com/">techsupport.services.ibm.com</a>
|
|
website as PTF U453956. This fix is incorporated in AIX 4.3.1 and above.
|
|
</p>
|
|
<p>AIX provides National Language Support (NLS). Compilers and assemblers
|
|
use NLS to support locale-specific representations of various data
|
|
formats including floating-point numbers (e.g., ‘<samp>.</samp>’ vs ‘<samp>,</samp>’ for
|
|
separating decimal fractions). There have been problems reported where
|
|
GCC does not produce the same floating-point formats that the assembler
|
|
expects. If one encounters this problem, set the <code>LANG</code>
|
|
environment variable to ‘<samp>C</samp>’ or ‘<samp>En_US</samp>’.
|
|
</p>
|
|
<p>A default can be specified with the <samp>-mcpu=<var>cpu_type</var></samp>
|
|
switch and using the configure option <samp>--with-cpu-<var>cpu_type</var></samp>.
|
|
</p>
|
|
<hr />
|
|
<a name="iq2000-x-elf"></a><a name="iq2000-*-elf"></a>
|
|
<h3 class="heading">iq2000-*-elf</h3>
|
|
<p>Vitesse IQ2000 processors. These are used in embedded
|
|
applications. There are no standard Unix configurations.
|
|
</p>
|
|
<hr />
|
|
<a name="lm32-x-elf"></a><a name="lm32-*-elf"></a>
|
|
<h3 class="heading">lm32-*-elf</h3>
|
|
<p>Lattice Mico32 processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="lm32-x-uclinux"></a><a name="lm32-*-uclinux"></a>
|
|
<h3 class="heading">lm32-*-uclinux</h3>
|
|
<p>Lattice Mico32 processor.
|
|
This configuration is intended for embedded systems running uClinux.
|
|
</p>
|
|
<hr />
|
|
<a name="loongarch"></a><a name="LoongArch"></a>
|
|
<h3 class="heading">LoongArch</h3>
|
|
<p>LoongArch processor.
|
|
The following LoongArch targets are available:
|
|
</p><dl compact="compact">
|
|
<dt><code>loongarch64-linux-gnu*</code></dt>
|
|
<dd><p>LoongArch processor running GNU/Linux. This target triplet may be coupled
|
|
with a small set of possible suffixes to identify their default ABI type:
|
|
</p><dl compact="compact">
|
|
<dt><code>f64</code></dt>
|
|
<dd><p>Uses <code>lp64d/base</code> ABI by default.
|
|
</p></dd>
|
|
<dt><code>f32</code></dt>
|
|
<dd><p>Uses <code>lp64f/base</code> ABI by default.
|
|
</p></dd>
|
|
<dt><code>sf</code></dt>
|
|
<dd><p>Uses <code>lp64s/base</code> ABI by default.
|
|
</p></dd>
|
|
</dl>
|
|
|
|
</dd>
|
|
<dt><code>loongarch64-linux-gnu</code></dt>
|
|
<dd><p>Same as <code>loongarch64-linux-gnuf64</code>, but may be used with
|
|
<samp>--with-abi=*</samp> to configure the default ABI type.
|
|
</p></dd>
|
|
</dl>
|
|
|
|
<p>More information about LoongArch can be found at
|
|
<a href="https://github.com/loongson/LoongArch-Documentation">https://github.com/loongson/LoongArch-Documentation</a>.
|
|
</p>
|
|
<hr />
|
|
<a name="m32c-x-elf"></a><a name="m32c-*-elf"></a>
|
|
<h3 class="heading">m32c-*-elf</h3>
|
|
<p>Renesas M32C processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="m32r-x-elf"></a><a name="m32r-*-elf"></a>
|
|
<h3 class="heading">m32r-*-elf</h3>
|
|
<p>Renesas M32R processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="m68k-x-x"></a><a name="m68k-*-*"></a>
|
|
<h3 class="heading">m68k-*-*</h3>
|
|
<p>By default,
|
|
‘<samp>m68k-*-elf*</samp>’, ‘<samp>m68k-*-rtems</samp>’, ‘<samp>m68k-*-uclinux</samp>’ and
|
|
‘<samp>m68k-*-linux</samp>’
|
|
build libraries for both M680x0 and ColdFire processors. If you only
|
|
need the M680x0 libraries, you can omit the ColdFire ones by passing
|
|
<samp>--with-arch=m68k</samp> to <code>configure</code>. Alternatively, you
|
|
can omit the M680x0 libraries by passing <samp>--with-arch=cf</samp> to
|
|
<code>configure</code>. These targets default to 5206 or 5475 code as
|
|
appropriate for the target system when
|
|
configured with <samp>--with-arch=cf</samp> and 68020 code otherwise.
|
|
</p>
|
|
<p>The ‘<samp>m68k-*-netbsd</samp>’ and
|
|
‘<samp>m68k-*-openbsd</samp>’ targets also support the <samp>--with-arch</samp>
|
|
option. They will generate ColdFire CFV4e code when configured with
|
|
<samp>--with-arch=cf</samp> and 68020 code otherwise.
|
|
</p>
|
|
<p>You can override the default processors listed above by configuring
|
|
with <samp>--with-cpu=<var>target</var></samp>. This <var>target</var> can either
|
|
be a <samp>-mcpu</samp> argument or one of the following values:
|
|
‘<samp>m68000</samp>’, ‘<samp>m68010</samp>’, ‘<samp>m68020</samp>’, ‘<samp>m68030</samp>’,
|
|
‘<samp>m68040</samp>’, ‘<samp>m68060</samp>’, ‘<samp>m68020-40</samp>’ and ‘<samp>m68020-60</samp>’.
|
|
</p>
|
|
<p>GCC requires at least binutils version 2.17 on these targets.
|
|
</p>
|
|
<hr />
|
|
<a name="m68k-x-uclinux"></a><a name="m68k-*-uclinux"></a>
|
|
<h3 class="heading">m68k-*-uclinux</h3>
|
|
<p>GCC 4.3 changed the uClinux configuration so that it uses the
|
|
‘<samp>m68k-linux-gnu</samp>’ ABI rather than the ‘<samp>m68k-elf</samp>’ ABI.
|
|
It also added improved support for C++ and flat shared libraries,
|
|
both of which were ABI changes.
|
|
</p>
|
|
<hr />
|
|
<a name="microblaze-x-elf"></a><a name="microblaze-*-elf"></a>
|
|
<h3 class="heading">microblaze-*-elf</h3>
|
|
<p>Xilinx MicroBlaze processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="mips-x-x"></a><a name="mips-*-*"></a>
|
|
<h3 class="heading">mips-*-*</h3>
|
|
<p>If on a MIPS system you get an error message saying “does not have gp
|
|
sections for all it’s [sic] sectons [sic]”, don’t worry about it. This
|
|
happens whenever you use GAS with the MIPS linker, but there is not
|
|
really anything wrong, and it is okay to use the output file. You can
|
|
stop such warnings by installing the GNU linker.
|
|
</p>
|
|
<p>It would be nice to extend GAS to produce the gp tables, but they are
|
|
optional, and there should not be a warning about their absence.
|
|
</p>
|
|
<p>The libstdc++ atomic locking routines for MIPS targets requires MIPS II
|
|
and later. A patch went in just after the GCC 3.3 release to
|
|
make ‘<samp>mips*-*-*</samp>’ use the generic implementation instead. You can also
|
|
configure for ‘<samp>mipsel-elf</samp>’ as a workaround. The
|
|
‘<samp>mips*-*-linux*</samp>’ target continues to use the MIPS II routines. More
|
|
work on this is expected in future releases.
|
|
</p>
|
|
|
|
<p>The built-in <code>__sync_*</code> functions are available on MIPS II and
|
|
later systems and others that support the ‘<samp>ll</samp>’, ‘<samp>sc</samp>’ and
|
|
‘<samp>sync</samp>’ instructions. This can be overridden by passing
|
|
<samp>--with-llsc</samp> or <samp>--without-llsc</samp> when configuring GCC.
|
|
Since the Linux kernel emulates these instructions if they are
|
|
missing, the default for ‘<samp>mips*-*-linux*</samp>’ targets is
|
|
<samp>--with-llsc</samp>. The <samp>--with-llsc</samp> and
|
|
<samp>--without-llsc</samp> configure options may be overridden at compile
|
|
time by passing the <samp>-mllsc</samp> or <samp>-mno-llsc</samp> options to
|
|
the compiler.
|
|
</p>
|
|
<p>MIPS systems check for division by zero (unless
|
|
<samp>-mno-check-zero-division</samp> is passed to the compiler) by
|
|
generating either a conditional trap or a break instruction. Using
|
|
trap results in smaller code, but is only supported on MIPS II and
|
|
later. Also, some versions of the Linux kernel have a bug that
|
|
prevents trap from generating the proper signal (<code>SIGFPE</code>). To enable
|
|
the use of break, use the <samp>--with-divide=breaks</samp>
|
|
<code>configure</code> option when configuring GCC. The default is to
|
|
use traps on systems that support them.
|
|
</p>
|
|
<hr />
|
|
<a name="moxie-x-elf"></a><a name="moxie-*-elf"></a>
|
|
<h3 class="heading">moxie-*-elf</h3>
|
|
<p>The moxie processor.
|
|
</p>
|
|
<hr />
|
|
<a name="msp430-x-elf"></a><a name="msp430-*-elf*"></a>
|
|
<h3 class="heading">msp430-*-elf*</h3>
|
|
<p>TI MSP430 processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<p>‘<samp>msp430-*-elf</samp>’ is the standard configuration with most GCC
|
|
features enabled by default.
|
|
</p>
|
|
<p>‘<samp>msp430-*-elfbare</samp>’ is tuned for a bare-metal environment, and disables
|
|
features related to shared libraries and other functionality not used for
|
|
this device. This reduces code and data usage of the GCC libraries, resulting
|
|
in a minimal run-time environment by default.
|
|
</p>
|
|
<p>Features disabled by default include:
|
|
</p><ul>
|
|
<li> transactional memory
|
|
</li><li> __cxa_atexit
|
|
</li></ul>
|
|
|
|
<hr />
|
|
<a name="nds32le-x-elf"></a><a name="nds32le-*-elf"></a>
|
|
<h3 class="heading">nds32le-*-elf</h3>
|
|
<p>Andes NDS32 target in little endian mode.
|
|
</p>
|
|
<hr />
|
|
<a name="nds32be-x-elf"></a><a name="nds32be-*-elf"></a>
|
|
<h3 class="heading">nds32be-*-elf</h3>
|
|
<p>Andes NDS32 target in big endian mode.
|
|
</p>
|
|
<hr />
|
|
<a name="nvptx-x-none"></a><a name="nvptx-*-none"></a>
|
|
<h3 class="heading">nvptx-*-none</h3>
|
|
<p>Nvidia PTX target.
|
|
</p>
|
|
<p>Instead of GNU binutils, you will need to install
|
|
<a href="https://github.com/MentorEmbedded/nvptx-tools/">nvptx-tools</a>.
|
|
Tell GCC where to find it:
|
|
<samp>--with-build-time-tools=[install-nvptx-tools]/nvptx-none/bin</samp>.
|
|
</p>
|
|
<p>You will need newlib 3.0 git revision
|
|
cd31fbb2aea25f94d7ecedc9db16dfc87ab0c316 or later. It can be
|
|
automatically built together with GCC. For this, add a symbolic link
|
|
to nvptx-newlib’s <samp>newlib</samp> directory to the directory containing
|
|
the GCC sources.
|
|
</p>
|
|
<p>Use the <samp>--disable-sjlj-exceptions</samp> and
|
|
<samp>--enable-newlib-io-long-long</samp> options when configuring.
|
|
</p>
|
|
<hr />
|
|
<a name="or1k-x-elf"></a><a name="or1k-*-elf"></a>
|
|
<h3 class="heading">or1k-*-elf</h3>
|
|
<p>The OpenRISC 1000 32-bit processor with delay slots.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="or1k-x-linux"></a><a name="or1k-*-linux"></a>
|
|
<h3 class="heading">or1k-*-linux</h3>
|
|
<p>The OpenRISC 1000 32-bit processor with delay slots.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-x"></a><a name="powerpc-*-*"></a>
|
|
<h3 class="heading">powerpc-*-*</h3>
|
|
<p>You can specify a default version for the <samp>-mcpu=<var>cpu_type</var></samp>
|
|
switch by using the configure option <samp>--with-cpu-<var>cpu_type</var></samp>.
|
|
</p>
|
|
<p>You will need GNU binutils 2.20 or newer.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-darwin"></a><a name="powerpc-*-darwin*"></a>
|
|
<h3 class="heading">powerpc-*-darwin*</h3>
|
|
<p>PowerPC running Darwin (Mac OS X kernel).
|
|
</p>
|
|
<p>Pre-installed versions of Mac OS X may not include any developer tools,
|
|
meaning that you will not be able to build GCC from source. Tool
|
|
binaries are available at
|
|
<a href="https://opensource.apple.com">https://opensource.apple.com</a>.
|
|
</p>
|
|
<p>This version of GCC requires at least cctools-590.36. The
|
|
cctools-590.36 package referenced from
|
|
<a href="https://gcc.gnu.org/ml/gcc/2006-03/msg00507.html">https://gcc.gnu.org/ml/gcc/2006-03/msg00507.html</a> will not work
|
|
on systems older than 10.3.9 (aka darwin7.9.0).
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-elf"></a><a name="powerpc-*-elf"></a>
|
|
<h3 class="heading">powerpc-*-elf</h3>
|
|
<p>PowerPC system in big endian mode, running System V.4.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-linux-gnu"></a><a name="powerpc*-*-linux-gnu*"></a>
|
|
<h3 class="heading">powerpc*-*-linux-gnu*</h3>
|
|
<p>PowerPC system in big endian mode running Linux.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-netbsd"></a><a name="powerpc-*-netbsd*"></a>
|
|
<h3 class="heading">powerpc-*-netbsd*</h3>
|
|
<p>PowerPC system in big endian mode running NetBSD.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-eabisim"></a><a name="powerpc-*-eabisim"></a>
|
|
<h3 class="heading">powerpc-*-eabisim</h3>
|
|
<p>Embedded PowerPC system in big endian mode for use in running under the
|
|
PSIM simulator.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpc-x-eabi"></a><a name="powerpc-*-eabi"></a>
|
|
<h3 class="heading">powerpc-*-eabi</h3>
|
|
<p>Embedded PowerPC system in big endian mode.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpcle-x-elf"></a><a name="powerpcle-*-elf"></a>
|
|
<h3 class="heading">powerpcle-*-elf</h3>
|
|
<p>PowerPC system in little endian mode, running System V.4.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpcle-x-eabisim"></a><a name="powerpcle-*-eabisim"></a>
|
|
<h3 class="heading">powerpcle-*-eabisim</h3>
|
|
<p>Embedded PowerPC system in little endian mode for use in running under
|
|
the PSIM simulator.
|
|
</p>
|
|
<hr />
|
|
<a name="powerpcle-x-eabi"></a><a name="powerpcle-*-eabi"></a>
|
|
<h3 class="heading">powerpcle-*-eabi</h3>
|
|
<p>Embedded PowerPC system in little endian mode.
|
|
</p>
|
|
<hr />
|
|
<a name="rl78-x-elf"></a><a name="rl78-*-elf"></a>
|
|
<h3 class="heading">rl78-*-elf</h3>
|
|
<p>The Renesas RL78 processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="riscv32-x-elf"></a><a name="riscv32-*-elf"></a>
|
|
<h3 class="heading">riscv32-*-elf</h3>
|
|
<p>The RISC-V RV32 instruction set.
|
|
This configuration is intended for embedded systems.
|
|
This (and all other RISC-V) targets require the binutils 2.30 release.
|
|
</p>
|
|
<hr />
|
|
<a name="riscv32-x-linux"></a><a name="riscv32-*-linux"></a>
|
|
<h3 class="heading">riscv32-*-linux</h3>
|
|
<p>The RISC-V RV32 instruction set running GNU/Linux.
|
|
This (and all other RISC-V) targets require the binutils 2.30 release.
|
|
</p>
|
|
<hr />
|
|
<a name="riscv64-x-elf"></a><a name="riscv64-*-elf"></a>
|
|
<h3 class="heading">riscv64-*-elf</h3>
|
|
<p>The RISC-V RV64 instruction set.
|
|
This configuration is intended for embedded systems.
|
|
This (and all other RISC-V) targets require the binutils 2.30 release.
|
|
</p>
|
|
<hr />
|
|
<a name="riscv64-x-linux"></a><a name="riscv64-*-linux"></a>
|
|
<h3 class="heading">riscv64-*-linux</h3>
|
|
<p>The RISC-V RV64 instruction set running GNU/Linux.
|
|
This (and all other RISC-V) targets require the binutils 2.30 release.
|
|
</p>
|
|
<hr />
|
|
<a name="rx-x-elf"></a><a name="rx-*-elf"></a>
|
|
<h3 class="heading">rx-*-elf</h3>
|
|
<p>The Renesas RX processor.
|
|
</p>
|
|
<hr />
|
|
<a name="s390-x-linux"></a><a name="s390-*-linux*"></a>
|
|
<h3 class="heading">s390-*-linux*</h3>
|
|
<p>S/390 system running GNU/Linux for S/390.
|
|
</p>
|
|
<hr />
|
|
<a name="s390x-x-linux"></a><a name="s390x-*-linux*"></a>
|
|
<h3 class="heading">s390x-*-linux*</h3>
|
|
<p>zSeries system (64-bit) running GNU/Linux for zSeries.
|
|
</p>
|
|
<hr />
|
|
<a name="s390x-ibm-tpf"></a><a name="s390x-ibm-tpf*"></a>
|
|
<h3 class="heading">s390x-ibm-tpf*</h3>
|
|
<p>zSeries system (64-bit) running TPF. This platform is
|
|
supported as cross-compilation target only.
|
|
</p>
|
|
<hr />
|
|
<a name="x-x-solaris2"></a><a name="g_t*-*-solaris2*"></a>
|
|
<h3 class="heading">*-*-solaris2*</h3>
|
|
<p>Support for Solaris 10 has been removed in GCC 10. Support for Solaris
|
|
9 has been removed in GCC 5. Support for Solaris 8 has been removed in
|
|
GCC 4.8. Support for Solaris 7 has been removed in GCC 4.6.
|
|
</p>
|
|
<p>Solaris 11.3 provides GCC 4.5.2, 4.7.3, and 4.8.2 as
|
|
<code>/usr/gcc/4.5/bin/gcc</code> or similar. Newer Solaris versions
|
|
provide one or more of GCC 5, 7, and 9. Alternatively,
|
|
you can install a pre-built GCC to bootstrap and install GCC. See the
|
|
<a href="binaries.html">binaries page</a> for details.
|
|
</p>
|
|
<p>The Solaris 2 <code>/bin/sh</code> will often fail to configure
|
|
‘<samp>libstdc++-v3</samp>’. We therefore recommend using the
|
|
following initial sequence of commands
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">% CONFIG_SHELL=/bin/ksh
|
|
% export CONFIG_SHELL
|
|
</pre></div>
|
|
|
|
<p>and proceed as described in <a href="configure.html">the configure instructions</a>.
|
|
In addition we strongly recommend specifying an absolute path to invoke
|
|
<code><var>srcdir</var>/configure</code>.
|
|
</p>
|
|
<p>In Solaris 11, you need to check for <code>system/header</code>,
|
|
<code>system/linker</code>, and <code>developer/assembler</code> packages.
|
|
</p>
|
|
<p>Trying to use the linker and other tools in
|
|
<samp>/usr/ucb</samp> to install GCC has been observed to cause trouble.
|
|
For example, the linker may hang indefinitely. The fix is to remove
|
|
<samp>/usr/ucb</samp> from your <code>PATH</code>.
|
|
</p>
|
|
<p>The build process works more smoothly with the legacy Solaris tools so, if you
|
|
have <samp>/usr/xpg4/bin</samp> in your <code>PATH</code>, we recommend that you place
|
|
<samp>/usr/bin</samp> before <samp>/usr/xpg4/bin</samp> for the duration of the build.
|
|
</p>
|
|
<p>We recommend the use of the Solaris assembler or the GNU assembler, in
|
|
conjunction with the Solaris linker. The GNU <code>as</code>
|
|
versions included in Solaris 11.3,
|
|
from GNU binutils 2.23.1 or newer (in <samp>/usr/bin/gas</samp> and
|
|
<samp>/usr/gnu/bin/as</samp>), are known to work.
|
|
The current version, from GNU binutils 2.34,
|
|
is known to work as well. Note that your mileage may vary
|
|
if you use a combination of the GNU tools and the Solaris tools: while the
|
|
combination GNU <code>as</code> + Solaris <code>ld</code> should reasonably work,
|
|
the reverse combination Solaris <code>as</code> + GNU <code>ld</code> may fail to
|
|
build or cause memory corruption at runtime in some cases for C++ programs.
|
|
GNU <code>ld</code> usually works as well. Again, the current
|
|
version (2.34) is known to work, but generally lacks platform specific
|
|
features, so better stay with Solaris <code>ld</code>. To use the LTO linker
|
|
plugin (<samp>-fuse-linker-plugin</samp>) with GNU <code>ld</code>, GNU
|
|
binutils <em>must</em> be configured with <samp>--enable-largefile</samp>.
|
|
</p>
|
|
<p>To enable symbol versioning in ‘<samp>libstdc++</samp>’ with the Solaris linker,
|
|
you need to have any version of GNU <code>c++filt</code>, which is part of
|
|
GNU binutils. ‘<samp>libstdc++</samp>’ symbol versioning will be disabled if no
|
|
appropriate version is found. Solaris <code>c++filt</code> from the Solaris
|
|
Studio compilers does <em>not</em> work.
|
|
</p>
|
|
<p>In order to build the GNU D compiler, GDC, a working ‘<samp>libphobos</samp>’ is
|
|
needed. That library wasn’t built by default in GCC 9–11 on SPARC, or
|
|
on x86 when the Solaris assembler is used, but can be enabled by
|
|
configuring with <samp>--enable-libphobos</samp>. Also, GDC 9.4.0 is
|
|
required on x86, while GDC 9.3.0 is known to work on SPARC.
|
|
</p>
|
|
<p>The versions of the GNU Multiple Precision Library (GMP), the MPFR
|
|
library and the MPC library bundled with Solaris 11.3 and later are
|
|
usually recent enough to match GCC’s requirements. There are two
|
|
caveats:
|
|
</p>
|
|
<ul>
|
|
<li> While the version of the GMP library in Solaris 11.3 works with GCC, you
|
|
need to configure with <samp>--with-gmp-include=/usr/include/gmp</samp>.
|
|
|
|
</li><li> The version of the MPFR libary included in Solaris 11.3 is too old; you
|
|
need to provide a more recent one.
|
|
|
|
</li></ul>
|
|
|
|
<hr />
|
|
<a name="sparc-x-x"></a><a name="sparc*-*-*"></a>
|
|
<h3 class="heading">sparc*-*-*</h3>
|
|
<p>This section contains general configuration information for all
|
|
SPARC-based platforms. In addition to reading this section, please
|
|
read all other sections that match your target.
|
|
</p>
|
|
<p>Newer versions of the GNU Multiple Precision Library (GMP), the MPFR
|
|
library and the MPC library are known to be miscompiled by earlier
|
|
versions of GCC on these platforms. We therefore recommend the use
|
|
of the exact versions of these libraries listed as minimal versions
|
|
in <a href="prerequisites.html">the prerequisites</a>.
|
|
</p>
|
|
<hr />
|
|
<a name="sparc-sun-solaris2"></a><a name="sparc-sun-solaris2*"></a>
|
|
<h3 class="heading">sparc-sun-solaris2*</h3>
|
|
<p>When GCC is configured to use GNU binutils 2.14 or later, the binaries
|
|
produced are smaller than the ones produced using Solaris native tools;
|
|
this difference is quite significant for binaries containing debugging
|
|
information.
|
|
</p>
|
|
<p>Starting with Solaris 7, the operating system is capable of executing
|
|
64-bit SPARC V9 binaries. GCC 3.1 and later properly supports
|
|
this; the <samp>-m64</samp> option enables 64-bit code generation.
|
|
However, if all you want is code tuned for the UltraSPARC CPU, you
|
|
should try the <samp>-mtune=ultrasparc</samp> option instead, which produces
|
|
code that, unlike full 64-bit code, can still run on non-UltraSPARC
|
|
machines.
|
|
</p>
|
|
<p>When configuring the GNU Multiple Precision Library (GMP), the MPFR
|
|
library or the MPC library on a Solaris 7 or later system, the canonical
|
|
target triplet must be specified as the <code>build</code> parameter on the
|
|
configure line. This target triplet can be obtained by invoking <code>./config.guess</code> in the toplevel source directory of GCC (and
|
|
not that of GMP or MPFR or MPC). For example on a Solaris 11 system:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">% ./configure --build=sparc-sun-solaris2.11 --prefix=xxx
|
|
</pre></div>
|
|
|
|
<hr />
|
|
<a name="sparc-x-linux"></a><a name="sparc-*-linux*"></a>
|
|
<h3 class="heading">sparc-*-linux*</h3>
|
|
|
|
<hr />
|
|
<a name="sparc64-x-solaris2"></a><a name="sparc64-*-solaris2*"></a>
|
|
<h3 class="heading">sparc64-*-solaris2*</h3>
|
|
<p>When configuring a 64-bit-default GCC on Solaris/SPARC, you must use a
|
|
build compiler that generates 64-bit code, either by default or by
|
|
specifying ‘<samp>CC='gcc -m64' CXX='gcc-m64'</samp>’ to <code>configure</code>.
|
|
Additionally, you <em>must</em> pass <samp>--build=sparc64-sun-solaris2.11</samp>
|
|
or <samp>--build=sparcv9-sun-solaris2.11</samp> because <samp>config.guess</samp>
|
|
misdetects this situation, which can cause build failures.
|
|
</p>
|
|
<p>When configuring the GNU Multiple Precision Library (GMP), the MPFR
|
|
library or the MPC library, the canonical target triplet must be specified
|
|
as the <code>build</code> parameter on the configure line. For example
|
|
on a Solaris 11 system:
|
|
</p>
|
|
<div class="smallexample">
|
|
<pre class="smallexample">% ./configure --build=sparc64-sun-solaris2.11 --prefix=xxx
|
|
</pre></div>
|
|
|
|
<hr />
|
|
<a name="sparcv9-x-solaris2"></a><a name="sparcv9-*-solaris2*"></a>
|
|
<h3 class="heading">sparcv9-*-solaris2*</h3>
|
|
<p>This is a synonym for ‘<samp>sparc64-*-solaris2*</samp>’.
|
|
</p>
|
|
<hr />
|
|
<a name="c6x-x-x"></a><a name="c6x-*-*"></a>
|
|
<h3 class="heading">c6x-*-*</h3>
|
|
<p>The C6X family of processors. This port requires binutils-2.22 or newer.
|
|
</p>
|
|
<hr />
|
|
<a name="tilegx-*-linux"></a><a name="tilegx-*-linux*"></a>
|
|
<h3 class="heading">tilegx-*-linux*</h3>
|
|
<p>The TILE-Gx processor in little endian mode, running GNU/Linux. This
|
|
port requires binutils-2.22 or newer.
|
|
</p>
|
|
<hr />
|
|
<a name="tilegxbe-*-linux"></a><a name="tilegxbe-*-linux*"></a>
|
|
<h3 class="heading">tilegxbe-*-linux*</h3>
|
|
<p>The TILE-Gx processor in big endian mode, running GNU/Linux. This
|
|
port requires binutils-2.23 or newer.
|
|
</p>
|
|
<hr />
|
|
<a name="tilepro-*-linux"></a><a name="tilepro-*-linux*"></a>
|
|
<h3 class="heading">tilepro-*-linux*</h3>
|
|
<p>The TILEPro processor running GNU/Linux. This port requires
|
|
binutils-2.22 or newer.
|
|
</p>
|
|
<hr />
|
|
<a name="visium-x-elf"></a><a name="visium-*-elf"></a>
|
|
<h3 class="heading">visium-*-elf</h3>
|
|
<p>CDS VISIUMcore processor.
|
|
This configuration is intended for embedded systems.
|
|
</p>
|
|
<hr />
|
|
<a name="x-x-vxworks"></a><a name="g_t*-*-vxworks*"></a>
|
|
<h3 class="heading">*-*-vxworks*</h3>
|
|
<p>Support for VxWorks is in flux. At present GCC supports <em>only</em> the
|
|
very recent VxWorks 5.5 (aka Tornado 2.2) release, and only on PowerPC.
|
|
We welcome patches for other architectures supported by VxWorks 5.5.
|
|
Support for VxWorks AE would also be welcome; we believe this is merely
|
|
a matter of writing an appropriate “configlette” (see below). We are
|
|
not interested in supporting older, a.out or COFF-based, versions of
|
|
VxWorks in GCC 3.
|
|
</p>
|
|
<p>VxWorks comes with an older version of GCC installed in
|
|
<samp><var>$WIND_BASE</var>/host</samp>; we recommend you do not overwrite it.
|
|
Choose an installation <var>prefix</var> entirely outside <var>$WIND_BASE</var>.
|
|
Before running <code>configure</code>, create the directories <samp><var>prefix</var></samp>
|
|
and <samp><var>prefix</var>/bin</samp>. Link or copy the appropriate assembler,
|
|
linker, etc. into <samp><var>prefix</var>/bin</samp>, and set your <var>PATH</var> to
|
|
include that directory while running both <code>configure</code> and
|
|
<code>make</code>.
|
|
</p>
|
|
<p>You must give <code>configure</code> the
|
|
<samp>--with-headers=<var>$WIND_BASE</var>/target/h</samp> switch so that it can
|
|
find the VxWorks system headers. Since VxWorks is a cross compilation
|
|
target only, you must also specify <samp>--target=<var>target</var></samp>.
|
|
<code>configure</code> will attempt to create the directory
|
|
<samp><var>prefix</var>/<var>target</var>/sys-include</samp> and copy files into it;
|
|
make sure the user running <code>configure</code> has sufficient privilege
|
|
to do so.
|
|
</p>
|
|
<p>GCC’s exception handling runtime requires a special “configlette”
|
|
module, <samp>contrib/gthr_supp_vxw_5x.c</samp>. Follow the instructions in
|
|
that file to add the module to your kernel build. (Future versions of
|
|
VxWorks will incorporate this module.)
|
|
</p>
|
|
<hr />
|
|
<a name="x86-64-x-x"></a><a name="x86_005f64-*-*_002c-amd64-*-*"></a>
|
|
<h3 class="heading">x86_64-*-*, amd64-*-*</h3>
|
|
<p>GCC supports the x86-64 architecture implemented by the AMD64 processor
|
|
(amd64-*-* is an alias for x86_64-*-*) on GNU/Linux, FreeBSD and NetBSD.
|
|
On GNU/Linux the default is a bi-arch compiler which is able to generate
|
|
both 64-bit x86-64 and 32-bit x86 code (via the <samp>-m32</samp> switch).
|
|
</p>
|
|
<hr />
|
|
<a name="x86-64-x-solaris2"></a><a name="x86_005f64-*-solaris2*"></a>
|
|
<h3 class="heading">x86_64-*-solaris2*</h3>
|
|
<p>GCC also supports the x86-64 architecture implemented by the AMD64
|
|
processor (‘<samp>amd64-*-*</samp>’ is an alias for ‘<samp>x86_64-*-*</samp>’) on
|
|
Solaris 10 or later. Unlike other systems, without special options a
|
|
bi-arch compiler is built which generates 32-bit code by default, but
|
|
can generate 64-bit x86-64 code with the <samp>-m64</samp> switch. Since
|
|
GCC 4.7, there is also a configuration that defaults to 64-bit code, but
|
|
can generate 32-bit code with <samp>-m32</samp>. To configure and build
|
|
this way, you have to provide all support libraries like <samp>libgmp</samp>
|
|
as 64-bit code, configure with <samp>--target=x86_64-pc-solaris2.11</samp>
|
|
and ‘<samp>CC=gcc -m64</samp>’.
|
|
</p>
|
|
<hr />
|
|
<a name="xtensa-x-elf"></a><a name="xtensa*-*-elf"></a>
|
|
<h3 class="heading">xtensa*-*-elf</h3>
|
|
<p>This target is intended for embedded Xtensa systems using the
|
|
‘<samp>newlib</samp>’ C library. It uses ELF but does not support shared
|
|
objects. Designed-defined instructions specified via the
|
|
Tensilica Instruction Extension (TIE) language are only supported
|
|
through inline assembly.
|
|
</p>
|
|
<p>The Xtensa configuration information must be specified prior to
|
|
building GCC. The <samp>include/xtensa-config.h</samp> header
|
|
file contains the configuration information. If you created your
|
|
own Xtensa configuration with the Xtensa Processor Generator, the
|
|
downloaded files include a customized copy of this header file,
|
|
which you can use to replace the default header file.
|
|
</p>
|
|
<hr />
|
|
<a name="xtensa-x-linux"></a><a name="xtensa*-*-linux*"></a>
|
|
<h3 class="heading">xtensa*-*-linux*</h3>
|
|
<p>This target is for Xtensa systems running GNU/Linux. It supports ELF
|
|
shared objects and the GNU C library (glibc). It also generates
|
|
position-independent code (PIC) regardless of whether the
|
|
<samp>-fpic</samp> or <samp>-fPIC</samp> options are used. In other
|
|
respects, this target is the same as the
|
|
<a href="#xtensa*-*-elf">‘<samp>xtensa*-*-elf</samp>’</a> target.
|
|
</p>
|
|
<hr />
|
|
<a name="windows"></a><a name="Microsoft-Windows"></a>
|
|
<h3 class="heading">Microsoft Windows</h3>
|
|
|
|
<a name="Intel-16-bit-versions"></a>
|
|
<h4 class="subheading">Intel 16-bit versions</h4>
|
|
<p>The 16-bit versions of Microsoft Windows, such as Windows 3.1, are not
|
|
supported.
|
|
</p>
|
|
<p>However, the 32-bit port has limited support for Microsoft
|
|
Windows 3.11 in the Win32s environment, as a target only. See below.
|
|
</p>
|
|
<a name="Intel-32-bit-versions"></a>
|
|
<h4 class="subheading">Intel 32-bit versions</h4>
|
|
<p>The 32-bit versions of Windows, including Windows 95, Windows NT, Windows
|
|
XP, and Windows Vista, are supported by several different target
|
|
platforms. These targets differ in which Windows subsystem they target
|
|
and which C libraries are used.
|
|
</p>
|
|
<ul>
|
|
<li> Cygwin <a href="#x-x-cygwin">*-*-cygwin</a>: Cygwin provides a user-space
|
|
Linux API emulation layer in the Win32 subsystem.
|
|
</li><li> MinGW <a href="#x-x-mingw32">*-*-mingw32</a>: MinGW is a native GCC port for
|
|
the Win32 subsystem that provides a subset of POSIX.
|
|
</li><li> MKS i386-pc-mks: NuTCracker from MKS. See
|
|
<a href="https://www.mkssoftware.com">https://www.mkssoftware.com</a> for more information.
|
|
</li></ul>
|
|
|
|
<a name="Intel-64-bit-versions"></a>
|
|
<h4 class="subheading">Intel 64-bit versions</h4>
|
|
<p>GCC contains support for x86-64 using the mingw-w64
|
|
runtime library, available from <a href="https://www.mingw-w64.org/downloads/">https://www.mingw-w64.org/downloads/</a>.
|
|
This library should be used with the target triple x86_64-pc-mingw32.
|
|
</p>
|
|
<a name="Windows-CE"></a>
|
|
<h4 class="subheading">Windows CE</h4>
|
|
<p>Windows CE is supported as a target only on Hitachi
|
|
SuperH (sh-wince-pe), and MIPS (mips-wince-pe).
|
|
</p>
|
|
<a name="Other-Windows-Platforms"></a>
|
|
<h4 class="subheading">Other Windows Platforms</h4>
|
|
<p>GCC no longer supports Windows NT on the Alpha or PowerPC.
|
|
</p>
|
|
<p>GCC no longer supports the Windows POSIX subsystem. However, it does
|
|
support the Interix subsystem. See above.
|
|
</p>
|
|
<p>Old target names including *-*-winnt and *-*-windowsnt are no longer used.
|
|
</p>
|
|
<p>PW32 (i386-pc-pw32) support was never completed, and the project seems to
|
|
be inactive. See <a href="http://pw32.sourceforge.net/">http://pw32.sourceforge.net/</a> for more information.
|
|
</p>
|
|
<p>UWIN support has been removed due to a lack of maintenance.
|
|
</p>
|
|
<hr />
|
|
<a name="x-x-cygwin"></a><a name="g_t*-*-cygwin"></a>
|
|
<h3 class="heading">*-*-cygwin</h3>
|
|
<p>Ports of GCC are included with the
|
|
<a href="http://www.cygwin.com/">Cygwin environment</a>.
|
|
</p>
|
|
<p>GCC will build under Cygwin without modification; it does not build
|
|
with Microsoft’s C++ compiler and there are no plans to make it do so.
|
|
</p>
|
|
<p>The Cygwin native compiler can be configured to target any 32-bit x86
|
|
cpu architecture desired; the default is i686-pc-cygwin. It should be
|
|
used with as up-to-date a version of binutils as possible; use either
|
|
the latest official GNU binutils release in the Cygwin distribution,
|
|
or version 2.20 or above if building your own.
|
|
</p>
|
|
<hr />
|
|
<a name="x-x-mingw32"></a><a name="g_t*-*-mingw32"></a>
|
|
<h3 class="heading">*-*-mingw32</h3>
|
|
<p>GCC will build with and support only MinGW runtime 3.12 and later.
|
|
Earlier versions of headers are incompatible with the new default semantics
|
|
of <code>extern inline</code> in <code>-std=c99</code> and <code>-std=gnu99</code> modes.
|
|
</p>
|
|
<p>To support emitting DWARF debugging info you need to use GNU binutils
|
|
version 2.16 or above containing support for the <code>.secrel32</code>
|
|
assembler pseudo-op.
|
|
</p>
|
|
<hr />
|
|
<a name="older"></a><a name="Older-systems"></a>
|
|
<h3 class="heading">Older systems</h3>
|
|
<p>GCC contains support files for many older (1980s and early
|
|
1990s) Unix variants. For the most part, support for these systems
|
|
has not been deliberately removed, but it has not been maintained for
|
|
several years and may suffer from bitrot.
|
|
</p>
|
|
<p>Starting with GCC 3.1, each release has a list of “obsoleted” systems.
|
|
Support for these systems is still present in that release, but
|
|
<code>configure</code> will fail unless the <samp>--enable-obsolete</samp>
|
|
option is given. Unless a maintainer steps forward, support for these
|
|
systems will be removed from the next release of GCC.
|
|
</p>
|
|
<p>Support for old systems as hosts for GCC can cause problems if the
|
|
workarounds for compiler, library and operating system bugs affect the
|
|
cleanliness or maintainability of the rest of GCC. In some cases, to
|
|
bring GCC up on such a system, if still possible with current GCC, may
|
|
require first installing an old version of GCC which did work on that
|
|
system, and using it to compile a more recent GCC, to avoid bugs in the
|
|
vendor compiler. Old releases of GCC 1 and GCC 2 are available in the
|
|
<samp>old-releases</samp> directory on the <a href="../mirrors.html">GCC mirror
|
|
sites</a>. Header bugs may generally be avoided using
|
|
<code>fixincludes</code>, but bugs or deficiencies in libraries and the
|
|
operating system may still cause problems.
|
|
</p>
|
|
<p>Support for older systems as targets for cross-compilation is less
|
|
problematic than support for them as hosts for GCC; if an enthusiast
|
|
wishes to make such a target work again (including resurrecting any of
|
|
the targets that never worked with GCC 2, starting from the last
|
|
version before they were removed), patches
|
|
<a href="../contribute.html">following the usual requirements</a> would be
|
|
likely to be accepted, since they should not affect the support for more
|
|
modern targets.
|
|
</p>
|
|
<p>For some systems, old versions of GNU binutils may also be useful,
|
|
and are available from <samp>pub/binutils/old-releases</samp> on
|
|
<a href="https://sourceware.org/mirrors.html">sourceware.org mirror sites</a>.
|
|
</p>
|
|
<p>Some of the information on specific systems above relates to
|
|
such older systems, but much of the information
|
|
about GCC on such systems (which may no longer be applicable to
|
|
current GCC) is to be found in the GCC texinfo manual.
|
|
</p>
|
|
<hr />
|
|
<a name="elf"></a><a name="all-ELF-targets-_0028SVR4_002c-Solaris-2_002c-etc_002e_0029"></a>
|
|
<h3 class="heading">all ELF targets (SVR4, Solaris 2, etc.)</h3>
|
|
<p>C++ support is significantly better on ELF targets if you use the
|
|
<a href="./configure.html#with-gnu-ld">GNU linker</a>; duplicate copies of
|
|
inlines, vtables and template instantiations will be discarded
|
|
automatically.
|
|
</p>
|
|
|
|
<hr />
|
|
<p>
|
|
<p><a href="./index.html">Return to the GCC Installation page</a>
|
|
</p>
|
|
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