Newer autoconf desires proper full quoting and use of AC_LANG_SOURCE. Import new m4 file from git://dev.medozas.de/m4_jengelh. m4/gcc4_visibility.m4:4: CHECK_GCC_FVISIBILITY is expanded from... configure.ac:15: the top level configure.ac:15: warning: AC_LANG_CONFTEST: no AC_LANG_SOURCE call detected in body --- m4/gcc4_visibility.m4 | 4 ++-- 1 files changed, 2 insertions(+), 2 deletions(-) diff --git a/m4/gcc4_visibility.m4 b/m4/gcc4_visibility.m4 index 84959f3..214d3f3 100644 --- a/m4/gcc4_visibility.m4 +++ b/m4/gcc4_visibility.m4 @@ -7,13 +7,13 @@ AC_DEFUN([CHECK_GCC_FVISIBILITY], [ CFLAGS="$saved_CFLAGS -fvisibility=hidden" AC_CACHE_CHECK([whether compiler accepts -fvisibility=hidden], [ac_cv_fvisibility_hidden], AC_COMPILE_IFELSE( - AC_LANG_PROGRAM([], []), + [AC_LANG_SOURCE()], [ac_cv_fvisibility_hidden=yes], [ac_cv_fvisibility_hidden=no] )) if test "$ac_cv_fvisibility_hidden" = "yes"; then AC_DEFINE([HAVE_VISIBILITY_HIDDEN], [1], - [True if compiler supports -fvisibility=hidden]) + [True if compiler supports -fvisibility=hidden]) AC_SUBST([GCC_FVISIBILITY_HIDDEN], [-fvisibility=hidden]) fi CFLAGS="$saved_CFLAGS" -- 1.7.3.4 -- To unsubscribe from this list: send the line "unsubscribe netfilter-devel" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html