mirror of
https://github.com/c64scene-ar/llvm-6502.git
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2532fa21a9
- This currently just moves over all of the behavior from LLVM. Eventually all of the configure checks that are directly needed by the LLVM build setup should probably go away, and the project should manage their own configuration checks if necessary. - This is the 1st half of this work, the actual Makefile.common hasn't moved over yet. I've tried to stage this in such a way that incremental builds will properly reconfigure for most active developers (the Makefiles don't handle reconfiguring in a perfectly reliable way, and I haven't found an easy way to make them do so). git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@142456 91177308-0d34-0410-b5e6-96231b3b80d8
43 lines
1.5 KiB
Plaintext
43 lines
1.5 KiB
Plaintext
# Check for the extension used for executables on build platform.
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# This is necessary for cross-compiling where the build platform
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# may differ from the host platform.
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AC_DEFUN([AC_BUILD_EXEEXT],
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[
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AC_MSG_CHECKING([for executable suffix on build platform])
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AC_CACHE_VAL(ac_cv_build_exeext,
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[if test "$CYGWIN" = yes || test "$MINGW32" = yes; then
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ac_cv_build_exeext=.exe
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else
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ac_build_prefix=${build_alias}-
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AC_CHECK_PROG(BUILD_CC, ${ac_build_prefix}gcc, ${ac_build_prefix}gcc)
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if test -z "$BUILD_CC"; then
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AC_CHECK_PROG(BUILD_CC, gcc, gcc)
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if test -z "$BUILD_CC"; then
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AC_CHECK_PROG(BUILD_CC, cc, cc, , , /usr/ucb/cc)
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fi
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fi
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test -z "$BUILD_CC" && AC_MSG_ERROR([no acceptable cc found in \$PATH])
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ac_build_link='${BUILD_CC-cc} -o conftest $CFLAGS $CPPFLAGS $LDFLAGS conftest.$ac_ext $LIBS 1>&AS_MESSAGE_LOG_FD'
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rm -f conftest*
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echo 'int main () { return 0; }' > conftest.$ac_ext
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ac_cv_build_exeext=
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if AC_TRY_EVAL(ac_build_link); then
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for file in conftest.*; do
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case $file in
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*.c | *.o | *.obj | *.dSYM) ;;
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*) ac_cv_build_exeext=`echo $file | sed -e s/conftest//` ;;
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esac
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done
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else
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AC_MSG_ERROR([installation or configuration problem: compiler cannot create executables.])
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fi
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rm -f conftest*
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test x"${ac_cv_build_exeext}" = x && ac_cv_build_exeext=blank
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fi])
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BUILD_EXEEXT=""
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test x"${ac_cv_build_exeext}" != xblank && BUILD_EXEEXT=${ac_cv_build_exeext}
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AC_MSG_RESULT(${ac_cv_build_exeext})
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ac_build_exeext=$BUILD_EXEEXT
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AC_SUBST(BUILD_EXEEXT)])
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