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| author | Florian Weimer <fweimer@redhat.com> | 2015-10-26 09:41:10 +0100 |
|---|---|---|
| committer | Florian Weimer <fweimer@redhat.com> | 2015-10-26 09:41:10 +0100 |
| commit | d337ceb76d898935560dc264cf2ad36b17017db7 (patch) | |
| tree | 84cb919ecbbd180c08340109d723ecf84ec198b3 /configure.ac | |
| parent | 6d834d2216bcc733fa04c5a59b5ac6f6f1134f2b (diff) | |
| download | glibc-d337ceb76d898935560dc264cf2ad36b17017db7.tar.gz | |
Use the CXX compiler only if it can create dynamic and static programs
* configure.ac (CXX): Clear the variable if the C++ toolchain does
not support static linking.
* configure: Regenerate.
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index e502aa5db2..3c7f6c0096 100644 --- a/configure.ac +++ b/configure.ac @@ -57,9 +57,26 @@ AC_PROG_CXX # It's useless to us if it can't link programs (e.g. missing -lstdc++). AC_CACHE_CHECK([whether $CXX can link programs], libc_cv_cxx_link_ok, [dnl AC_LANG_PUSH([C++]) +# Default, dynamic case. AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [libc_cv_cxx_link_ok=yes], [libc_cv_cxx_link_ok=no]) +# Static case. +old_LDFLAGS="$LDFLAGS" +LDFLAGS="$LDFLAGS -static" +AC_LINK_IFELSE([AC_LANG_SOURCE([ +#include <iostream> + +int +main() +{ + std::cout << "Hello, world!"; + return 0; +} +])], + [], + [libc_cv_cxx_link_ok=no]) +LDFLAGS="$old_LDFLAGS" AC_LANG_POP([C++])]) AS_IF([test $libc_cv_cxx_link_ok != yes], [CXX=]) |