ATTRIBUTE_HIDDEN for libbfd.h

[binutils-gdb.git] / bfd / configure.ac

diff --git a/bfd/configure.ac b/bfd/configure.ac
index 6c1b5febd55531f21a3d827984743fce70752c63..12974691ad07a17d044470bc2bcd4ea59f625311 100644 (file)
--- a/bfd/configure.ac
+++ b/bfd/configure.ac
@@ -256,6 +256,17 @@ AC_CHECK_DECLS(strnlen)
 # This is used only by compress.c.
 AM_ZLIB
 
+AC_CACHE_CHECK([compiler support for hidden visibility], bfd_cv_hidden,
+[AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
+const char hw[] __attribute__ ((__visibility__ ("hidden"))) = "Hello, World\n";
+extern void print (const char *) __attribute__ ((__visibility__ ("hidden")));]],
+       [[print (hw);]])],
+  [bfd_cv_hidden=yes], [bfd_cv_hidden=no])])
+if test $bfd_cv_hidden = yes; then
+  AC_DEFINE(HAVE_HIDDEN, 1,
+           [Define if your compiler supports hidden visibility.])
+fi
+
 # Check if linker supports --as-needed and --no-as-needed options
 AC_CACHE_CHECK(linker --as-needed support, bfd_cv_ld_as_needed,
        [bfd_cv_ld_as_needed=no