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| author | Neels Hofmeyr <neels@hofmeyr.de> | 2018-03-05 20:40:05 +0100 |
|---|---|---|
| committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2018-03-13 00:00:30 +0000 |
| commit | 09ecbb76745b4189f07e339131c1df4f46a03531 (patch) | |
| tree | a92530765690e39ec24c4a56acc146ef6ab4ea6d | |
| parent | 10959cdea2104a6e8c592d590d5b6acf656eb630 (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: Ic5c8e68b64cd890b3309b4b26c7f22bde1edba83
| -rw-r--r-- | configure.ac | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 60c177f8..7f2aabd1 100644 --- a/configure.ac +++ b/configure.ac @@ -272,6 +272,24 @@ 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 $WERROR_FLAGS" +fi + CFLAGS="$CFLAGS -DBUILDING_LIBOSMOCORE -Wall" CPPFLAGS="$CPPFLAGS -DBUILDING_LIBOSMOCORE -Wall" @@ -318,6 +336,9 @@ dnl Check if the compiler supports runtime SIMD detection CHECK_BUILTIN_SUPPORT([__builtin_cpu_supports], [Runtime SIMD detection will be disabled]) +AC_MSG_RESULT([CFLAGS="$CFLAGS"]) +AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"]) + AC_OUTPUT( libosmocore.pc libosmocodec.pc |