[Pkg-gnupg-commit] [gnupg2] 12/20: build: Check -Wlogical-op flag availability with -Werror.

[Daniel Kahn Gillmor]

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dkg pushed a commit to branch master
in repository gnupg2.

commit 3ecd1a41be7c880976987d13e88342c98f37e064
Author: NIIBE Yutaka <gniibe at fsij.org>
Date:   Mon Nov 20 12:01:31 2017 +0900

    build: Check -Wlogical-op flag availability with -Werror.
    
    * configure.ac: Use -Werror.
    
    --
    
    Using clang, -Wlogical-op doesn't fail but generates warning.
    
    Signed-off-by: NIIBE Yutaka <gniibe at fsij.org>
---
 configure.ac | 14 +++++++++++---
 1 file changed, 11 insertions(+), 3 deletions(-)

diff --git a/configure.ac b/configure.ac
index 42c0698..3d3a136 100644
--- a/configure.ac
+++ b/configure.ac
@@ -1612,12 +1612,20 @@ if test "$GCC" = yes; then
           mycflags="$mycflags -Wdeclaration-after-statement"
         fi
 
-        AC_MSG_CHECKING([if gcc supports -Wlogical-op and -Wvla])
-        CFLAGS="-Wlogical-op -Wvla"
+        AC_MSG_CHECKING([if gcc supports -Wlogical-op])
+        CFLAGS="-Wlogical-op -Werror"
         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="$mycflags -Wlogical-op -Wvla"
+          mycflags="$mycflags -Wlogical-op -Werror"
+        fi
+
+        AC_MSG_CHECKING([if gcc supports -Wvla])
+        CFLAGS="-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 -Wvla"
         fi
 
     else

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