From: Werner Koch <wk@gnupg.org>
Date: Mon, 2 Jan 2017 11:59:10 +0000 (+0100)
Subject: build: Enable gcc warnings to detect non-portable code.
X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ian/git?p=gnupg2.git;a=commitdiff_plain;h=efd31ce13f7d97a6e3530e5696fbfbfd2d175279

build: Enable gcc warnings to detect non-portable code.

--

Signed-off-by: Werner Koch <wk@gnupg.org>
(cherry picked from commit c52930d11fcc52515fcc09a1085bf118411566a8)

Gbp-Pq: Name 0016-build-Enable-gcc-warnings-to-detect-non-portable-cod.patch
---

diff --git a/configure.ac b/configure.ac
index 932c741..237189c 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1575,6 +1575,15 @@ if test "$GCC" = yes; then
         if test x"$_gcc_wopt" = xyes ; then
           mycflags="$mycflags -Wdeclaration-after-statement"
         fi
+
+        AC_MSG_CHECKING([if gcc supports -Wlogical-op and -Wvla])
+        CFLAGS="-Wlogical-op -Wvla"
+        AC_COMPILE_IFELSE([AC_LANG_PROGRAM([],[])],_gcc_wopt=yes,_gcc_wopt=no)
+        AC_MSG_RESULT($_gcc_wopt)
+        if test x"$_gcc_wopt" = xyes ; then
+          mycflags="$mycflags -Wlogical-op -Wvla"
+        fi
+
     else
         mycflags="$mycflags -Wall"
     fi