Looking at this bit of autofoolery, I notice that at the moment it is just
checking if CC supports -fvisibility=hidden twice
Signed-off-by: Jon TURNEY <jon.tur...@dronecode.org.uk>
---
configure.ac | 2 ++
1 files changed, 2 insertions(+), 0 deletions(-)
diff --git a/configure.ac b/configure.ac
index 3b05ca3..37ea5e7 100644
--- a/configure.ac
+++ b/configure.ac
@@ -170,8 +170,10 @@ if test "x$GXX" = xyes; then
AC_MSG_CHECKING([whether $CXX supports -fvisibility=hidden])
VISIBILITY_CXXFLAGS="-fvisibility=hidden"
CXXFLAGS="$CXXFLAGS $VISIBILITY_CXXFLAGS"
+ AC_LANG_PUSH([C++])
AC_LINK_IFELSE([AC_LANG_PROGRAM()], AC_MSG_RESULT([yes]),
[VISIBILITY_CXXFLAGS="" ; AC_MSG_RESULT([no])]);
+ AC_LANG_POP([C++])
# Restore CXXFLAGS; VISIBILITY_CXXFLAGS are added to it where needed.
CXXFLAGS=$save_CXXFLAGS
--
1.7.4
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