forked from OSchip/llvm-project
42 lines
1.3 KiB
Plaintext
42 lines
1.3 KiB
Plaintext
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#
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# Determine if the system can handle the -R option being passed to the linker.
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#
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# This macro is specific to LLVM.
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#
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AC_DEFUN([AC_LINK_USE_R],
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[AC_CACHE_CHECK([for compiler -Wl,-R<path> option],[llvm_cv_link_use_r],
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[ AC_LANG_PUSH([C])
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oldcflags="$CFLAGS"
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CFLAGS="$CFLAGS -Wl,-R."
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],
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[llvm_cv_link_use_r=yes],[llvm_cv_link_use_r=no])
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CFLAGS="$oldcflags"
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AC_LANG_POP([C])
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])
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if test "$llvm_cv_link_use_r" = yes ; then
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AC_DEFINE([HAVE_LINK_R],[1],[Define if you can use -Wl,-R. to pass -R. to the linker, in order to add the current directory to the dynamic linker search path.])
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fi
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])
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#
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# Determine if the system can handle the -R option being passed to the linker.
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#
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# This macro is specific to LLVM.
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#
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AC_DEFUN([AC_LINK_EXPORT_DYNAMIC],
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[AC_CACHE_CHECK([for compiler -Wl,-export-dynamic option],
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[llvm_cv_link_use_export_dynamic],
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[ AC_LANG_PUSH([C])
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oldcflags="$CFLAGS"
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CFLAGS="$CFLAGS -Wl,-export-dynamic"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[]],[[int main() { return 0; }]])],
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[llvm_cv_link_use_export_dynamic=yes],[llvm_cv_link_use_export_dynamic=no])
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CFLAGS="$oldcflags"
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AC_LANG_POP([C])
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])
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if test "$llvm_cv_link_use_export_dynamic" = yes ; then
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AC_DEFINE([HAVE_LINK_EXPORT_DYNAMIC],[1],[Define if you can use -Wl,-export-dynamic.])
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fi
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])
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