Retro68/elf2flt/configure.in

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2012-03-27 21:31:44 +00:00
dnl Process this file with autoconf to produce a configure script.
AC_INIT(elf2flt.c)
AC_ARG_WITH(zlib-prefix,
AS_HELP_STRING([--with-zlib-prefix=<dir>], [path to installed zlib]),
[ ac_zlib_prefix=$withval ],
[ ac_zlib_prefix=NONE ]
)
AC_ARG_WITH(libbfd,
AS_HELP_STRING([--with-libbfd=<file>], [path to libbfd.a library to use]),
[ ac_libbfd=$withval ],
[ ac_libbfd=NONE ]
)
AC_ARG_WITH(libiberty,
AS_HELP_STRING([--with-libiberty=<file>], [path to libiberty.a library to use]),
[ ac_libiberty=$withval ],
[ ac_libiberty=NONE ]
)
AC_ARG_WITH(bfd-include-dir,
AS_HELP_STRING([--with-bfd-include-dir=<dir>], [include path for correct bfd.h]),
[ ac_bfd_include_dir=$withval ],
[ ac_bfd_include_dir=NONE ]
)
AC_ARG_WITH(binutils-include-dir,
AS_HELP_STRING([--with-binutils-include-dir=<dir>], [include path for binutils headers]),
[ ac_binutils_include_dir=$withval ],
[ ac_binutils_include_dir=NONE ]
)
AC_ARG_WITH(binutils-ldscript-dir,
AS_HELP_STRING([--with-binutils-ldscript-dir=<dir>], [path to install elf2flt.ld]),
[ ac_binutils_ldscript_dir=$withval ],
[ ac_binutils_ldscript_dir=NONE ]
)
AC_ARG_WITH(binutils-build-dir,
AS_HELP_STRING([--with-binutils-build-dir=<dir>], [path to compiled binutils tree]),
[ ac_binutils_build_dir=$withval ],
[ ac_binutils_build_dir=NONE ]
)
AC_ARG_ENABLE(ld-elf2flt-binary,
AS_HELP_STRING([--disable-ld-elf2flt-binary], [use ld-elf2flt shell script]),
[ use_ld_elf2flt_binary=$enableval ],
[ use_ld_elf2flt_binary=yes ]
)
dnl convert a yes/no variable to 1/0 for C code
var_yn_to_10() {
if eval test \"\$$1\" = yes ; then
eval $1=1
else
eval $1=0
fi
}
AC_ARG_ENABLE(got-check,
AS_HELP_STRING([--disable-got-check], [disable check for GOT (needed on H8)]),
[ got_check=$enableval ],
[ got_check=yes ]
)
var_yn_to_10 got_check
AC_ARG_ENABLE(emit-relocs,
AS_HELP_STRING([--disable-emit-relocs], [don't use the --emit-relocs (-q) linker option]),
[ emit_relocs=$enableval ],
[ emit_relocs=yes ]
)
var_yn_to_10 emit_relocs
AC_ARG_ENABLE(emit-ctor-dtor,
AS_HELP_STRING([--enable-emit-ctor-dtor], [manually create ctor/dtor list]),
[ emit_ctor_dtor=$enableval ],
[ emit_ctor_dtor=no ]
)
var_yn_to_10 emit_ctor_dtor
AC_ARG_ENABLE(always-reloc-text,
AS_HELP_STRING([--enable-always-reloc-text], [always process text relocs ignoring pic/got (needed on Blackfin)]),
[ always_reloc_text=$enableval ],
[
case $target in
bfin*) always_reloc_text=yes;;
*) always_reloc_text=no;;
esac
]
)
var_yn_to_10 always_reloc_text
AC_CANONICAL_HOST
AC_CANONICAL_TARGET
dnl Checks for programs.
AC_PROG_CC
AC_USE_SYSTEM_EXTENSIONS
AC_PROG_INSTALL
if test "$ac_binutils_build_dir" != "NONE"; then
test "$ac_libbfd" = "NONE" && ac_libbfd="$ac_binutils_build_dir/bfd/libbfd.a"
test "$ac_libiberty" = "NONE" && ac_libiberty="$ac_binutils_build_dir/libiberty/libiberty.a"
test "$ac_bfd_include_dir" = "NONE" && ac_bfd_include_dir="$ac_binutils_build_dir/bfd"
test "$ac_binutils_include_dir" = "NONE" && ac_binutils_include_dir="$ac_binutils_build_dir/include"
fi
dnl Checks for libraries.
dnl The dlopen() function is in the C library for *BSD and in
dnl libdl on GLIBC-based systems
AC_SEARCH_LIBS([dlopen], [dl dld], [], [
AC_MSG_ERROR([unable to find the dlopen() function])
])
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if test "$ac_libiberty" = "NONE"; then
AC_CHECK_LIB(iberty, objalloc_create)
ac_libiberty=auto
else
LIBS="$ac_libiberty $LIBS"
fi
if test "$ac_libbfd" = "NONE"; then
AC_CHECK_LIB(bfd, bfd_openr)
ac_libbfd=auto
else
LIBS="$ac_libbfd $LIBS"
fi
if test "$ac_zlib_prefix" = "NONE"; then
AC_CHECK_LIB(z, deflate)
else
LIBS="-L$ac_zlib_prefix/lib -lz $LIBS"
fi
bfd_include_dir=
if test "$ac_bfd_include_dir" != "NONE"; then
bfd_include_dir="-I$ac_bfd_include_dir"
fi
binutils_include_dir=
if test "$ac_binutils_include_dir" != "NONE"; then
binutils_include_dir="-I$ac_binutils_include_dir"
fi
zlib_include_dir=
if test "$ac_zlib_prefix" != "NONE"; then
zlib_include_dir="-I$ac_zlib_prefix/include"
fi
binutils_ldscript_dir=
if test "$ac_binutils_ldscript_dir" = "NONE"; then
ac_binutils_ldscript_dir="\${TOOLDIR}/../${target_alias}/lib"
fi
binutils_ldscript_dir="$ac_binutils_ldscript_dir"
if test "$ac_libbfd" = "NONE" -o "$ac_libiberty" = "NONE" ; then
AC_MSG_ERROR([
You need to specify the location of the libfd.a and libiberty.a
host libraries from the binutils package.
Run configure again specifying these options:
./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
])
fi
if test "$ac_bfd_include_dir" = "NONE" ; then
AC_MSG_ERROR([
You need to specify the location of the bfd.h header from a
configured/compiled version of the binutils package for your target.
Without this your elf2flt may crash as it will try to use the
systems bfd.h which may be from a different binutils package.
Run configure again specifying these options:
./configure --target=<ARCH> --with-bfd-include-dir=<dir> --with-libbfd=<libbfd.a> --with-libiberty=<libiberty.a>
])
fi
SYMBOL_PREFIX=
case $target in
h8300|bfin*)
SYMBOL_PREFIX=_
;;
esac
dnl Make sure we resolve system symbols before libiberty/libbfd ones.
dnl Otherwise, things like getopt get screwed up because the system headers
dnl redirect some functions to the system symbols, but other local symbols
dnl come from libiberty/libbfd.
dnl int getopt(int, char * const [], const char *) __asm("_" "getopt" "$UNIX2003");
AC_CHECK_LIB(c, malloc, LIBS="-lc $LIBS")
dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(fcntl.h unistd.h bfd.h)
dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
dnl Checks for library functions.
AC_FUNC_VPRINTF
AC_CHECK_FUNCS([ \
dcgettext \
getline \
libintl_dgettext \
strsignal \
])
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test "$GCC" = yes && CFLAGS="-Wall $CFLAGS"
dnl Subsitute values
AC_SUBST(target)
AC_SUBST(target_alias)
AC_SUBST(target_cpu)
AC_SUBST(target_os)
AC_SUBST(target_vendor)
AC_SUBST(bfd_include_dir)
AC_SUBST(binutils_include_dir)
AC_SUBST(zlib_include_dir)
AC_SUBST(binutils_ldscript_dir)
AC_SUBST(use_ld_elf2flt_binary)
AC_SUBST(got_check)
AC_SUBST(emit_relocs)
AC_SUBST(emit_ctor_dtor)
AC_SUBST(always_reloc_text)
AC_SUBST(SYMBOL_PREFIX)
AC_OUTPUT(ld-elf2flt.sh:ld-elf2flt.in Makefile elf2flt.ld)