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author | Neels Hofmeyr <neels@hofmeyr.de> | 2018-03-05 19:46:44 +0100 |
---|---|---|
committer | Neels Hofmeyr <neels@hofmeyr.de> | 2018-03-05 20:40:21 +0100 |
commit | 6e152f258226ddc5233fbb8c4f9e222fc90a161d (patch) | |
tree | 5a4b56e307cd888e968878125ff861bfc3fcea31 | |
parent | bd2173796d90db181c22034e4acbe391d2cb57ce (diff) |
configure: add --enable-werror
Provide a sane means of adding the -Werror compiler flag.
Currently, some of our jenkins.sh add -Werror by passing 'CFLAGS="-Werror"',
but that actually *overwrites* all the other CFLAGS we might want to have set.
Maintain these exceptions from -Werror:
a) deprecation (allow upstream to mark deprecation without breaking builds);
b) "#warning" pragmas (allow to remind ourselves of errors without breaking
builds)
As a last configure step before generating the output files, print the complete
CFLAGS and CPPFLAGS by means of AC_MSG_RESULT.
Change-Id: Ibcc8238584a585434b39a046cd2d7e18ddaf7f8c
-rw-r--r-- | configure.ac | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 4d65c2f..1610973 100644 --- a/configure.ac +++ b/configure.ac @@ -29,6 +29,24 @@ then CPPFLAGS="$CPPFLAGS -fsanitize=address -fsanitize=undefined" fi +AC_ARG_ENABLE(werror, + [AS_HELP_STRING( + [--enable-werror], + [Turn all compiler warnings into errors, with exceptions: + a) deprecation (allow upstream to mark deprecation without breaking builds); + b) "#warning" pragmas (allow to remind ourselves of errors without breaking builds) + ] + )], + [werror=$enableval], [werror="no"]) +if test x"$werror" = x"yes" +then + WERROR_FLAGS="-Werror" + WERROR_FLAGS+=" -Wno-error=deprecated -Wno-error=deprecated-declarations" + WERROR_FLAGS+=" -Wno-error=cpp" # "#warning" + CFLAGS="$CFLAGS $WERROR_FLAGS" + CPPFLAGS="$CPPFLAGS $WERROR_FLAGS" +fi + # The following test is taken from WebKit's webkit.m4 saved_CFLAGS="$CFLAGS" CFLAGS="$CFLAGS -fvisibility=hidden " @@ -44,6 +62,9 @@ AC_ARG_ENABLE([debug], [AS_HELP_STRING([--enable-debug], [Buld the library with [build_debug="$enableval"], [build_debug="no"]) AM_CONDITIONAL(BUILD_DEBUG, test "x$build_debug" = "xyes") +AC_MSG_RESULT([CFLAGS="$CFLAGS"]) +AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"]) + AC_OUTPUT( libasn1c.pc src/Makefile |