diff options
Diffstat (limited to 'configure.in')
| -rw-r--r-- | configure.in | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/configure.in b/configure.in index bd38c2b8b4..1ad99ca5e5 100644 --- a/configure.in +++ b/configure.in @@ -445,6 +445,23 @@ RUBY_FUNC_ATTRIBUTE(stdcall) RUBY_FUNC_ATTRIBUTE(cdecl) RUBY_FUNC_ATTRIBUTE(fastcall) +if test "$GCC" = yes; then + AC_CACHE_CHECK([for function alias], [rb_cv_gcc_function_alias], + [rb_cv_gcc_function_alias=no + for a in alias weak,alias; do + AC_TRY_LINK([void foo(void) {} + void bar(void) __attribute__(($a("foo")));], [bar()], + [rb_cv_gcc_function_alias=$a; break]) + done]) + if test "$rb_cv_gcc_function_alias" = no; then + AC_DEFINE([RUBY_ALIAS_FUNCTION(old_prot, new_name, args)], + [VALUE old_prot {return new_name args;}]) + else + AC_DEFINE_UNQUOTED([RUBY_ALIAS_FUNCTION(old_prot, new_name, args)], + [VALUE old_prot __attribute__(($rb_cv_gcc_function_alias(@%:@new_name)));]) + fi +fi + AC_CACHE_CHECK([for RUBY_EXTERN], rb_cv_ruby_extern, [rb_cv_ruby_extern=no for mac in "__attribute__((dllimport))" "__declspec(dllimport)"; do |