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| author | Neels Hofmeyr <neels@hofmeyr.de> | 2018-03-05 20:38:57 +0100 |
|---|---|---|
| committer | Neels Hofmeyr <nhofmeyr@sysmocom.de> | 2018-03-12 23:59:31 +0000 |
| commit | 9f4a9232e791e60ca93a3a79f03efd8ca01cec9c (patch) | |
| tree | a93af476140e1f58e1bf17b4a8e44f5805e4a26b /configure.ac | |
| parent | ce439fc945afbefb9f1762cb6a4ee1b74cbd8ae7 (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: I68e4781ec5dfaf1dac46510a092a87e35691f082
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index d146513..f01dac9 100644 --- a/configure.ac +++ b/configure.ac @@ -43,6 +43,24 @@ 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 -Wall" CPPFLAGS="$CPPFLAGS -Wall" |