diff options
Diffstat (limited to 'tool/m4/ruby_try_cxxflags.m4')
| -rw-r--r-- | tool/m4/ruby_try_cxxflags.m4 | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/tool/m4/ruby_try_cxxflags.m4 b/tool/m4/ruby_try_cxxflags.m4 new file mode 100644 index 0000000000..5f84140670 --- /dev/null +++ b/tool/m4/ruby_try_cxxflags.m4 @@ -0,0 +1,17 @@ +# -*- Autoconf -*- +AC_DEFUN([RUBY_TRY_CXXFLAGS], [ + save_CXXFLAGS="$CXXFLAGS" + CXXFLAGS="[$]CXXFLAGS $1" + AC_MSG_CHECKING([whether ]$1[ is accepted as CXXFLAGS]) + RUBY_WERROR_FLAG([ + AC_LANG_PUSH([C++]) + AC_TRY_LINK([$4], [$5], + [$2 + AC_MSG_RESULT(yes)], + [$3 + AC_MSG_RESULT(no)]) + ]) + AC_LANG_POP([C++]) + CXXFLAGS="$save_CXXFLAGS" + save_CXXFLAGS= +])dnl |