[PATCH 1/4] openbsc: add missing AC_LANG_SOURCE for current autoconf

[Alexander Huemer]

autoconf >=2.68 demands the body of an AC_COMPILE_IFELSE to be wrapped in
an AC_LANG_SOURCE macro, otherwise outputs annoying warnings on the
invocation of `autoreconf -i`. this patch follows that demand.
---
 openbsc/configure.in |    2 +-
 1 files changed, 1 insertions(+), 1 deletions(-)

diff --git a/openbsc/configure.in b/openbsc/configure.in
index e9bc079..74b3044 100644
--- a/openbsc/configure.in
+++ b/openbsc/configure.in
@@ -59,7 +59,7 @@ dnl Checks for typedefs, structures and compiler characteristics
 saved_CFLAGS="$CFLAGS"
 CFLAGS="$CFLAGS -fvisibility=hidden "
 AC_MSG_CHECKING([if ${CC} supports -fvisibility=hidden])
-AC_COMPILE_IFELSE([char foo;],
+AC_COMPILE_IFELSE([AC_LANG_SOURCE([char foo;])],
       [ AC_MSG_RESULT([yes])
         SYMBOL_VISIBILITY="-fvisibility=hidden"],
         AC_MSG_RESULT([no]))
-- 
1.7.5.rc3