use AC_LANG_SOURCE to silence warnings from autoconf

[catta] / configure.ac

diff --git a/configure.ac b/configure.ac
index 1cb4e9f590d5f767555f37925a0df546aebcb823..4fcf13d9433e59dbb670f919efadbd279dfe8002 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -46,7 +46,6 @@ AC_PROG_CC
 AC_PROG_CC_C99
 AM_PROG_CC_C_O
 AC_USE_SYSTEM_EXTENSIONS
-AC_PROG_CPP
 AC_PROG_MKDIR_P
 AC_PROG_INSTALL
 AC_PROG_LN_S
@@ -227,7 +226,7 @@ AC_TRY_COMPILE([#include <netinet/in.h>], [
 ])
 
 test_gcc_flag() {
-    AC_LANG_CONFTEST([int main() {}])
+    AC_LANG_CONFTEST([AC_LANG_SOURCE([[int main() {}]])])
     $CC -c conftest.c $CFLAGS $@ > /dev/null 2> /dev/null
     ret=$?
     rm -f conftest.o