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authorNeels Hofmeyr <neels@hofmeyr.de>2018-03-05 20:44:11 +0100
committerNeels Hofmeyr <nhofmeyr@sysmocom.de>2018-03-13 00:03:38 +0000
commit5a5919435ef85933456b50dc32f3c92802730efa (patch)
tree8d9ff699b89cecbddb1e646fd620c44d442cfc0a
parentbdc55fad62e333951a0eb1fc7b96aaaec16dd6ff (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: I0f735913fc3bbda695c4e66449dcfc94f417dafb
-rw-r--r--configure.ac21
1 files changed, 21 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac
index 3706b6c..8cddd1a 100644
--- a/configure.ac
+++ b/configure.ac
@@ -45,6 +45,24 @@ then
LDFLAGS="$LDFLAGS -fsanitize=address -fsanitize=undefined"
fi
+AC_ARG_ENABLE(werror,
+ [AS_HELP_STRING(
+ [--enable-werror],
+ [Turn all compiler warnings into errors, with exceptions:
+ a) deprecation (allow upstream to mark deprecation without breaking builds);
+ b) "#warning" pragmas (allow to remind ourselves of errors without breaking builds)
+ ]
+ )],
+ [werror=$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 $WERROR_FLAGS"
+fi
+
AC_ARG_ENABLE(profile,
[AS_HELP_STRING([--enable-profile], [Compile with profiling support enabled], )],
[profile=$enableval], [profile="no"])
@@ -116,6 +134,9 @@ AM_CONDITIONAL(ENABLE_VTY_TESTS, test "x$enable_vty_tests" = "xyes")
STD_DEFINES_AND_INCLUDES="-Wall"
AC_SUBST(STD_DEFINES_AND_INCLUDES)
+AC_MSG_RESULT([CFLAGS="$CFLAGS"])
+AC_MSG_RESULT([CPPFLAGS="$CPPFLAGS"])
+
AC_OUTPUT(
osmo-pcu.pc
include/Makefile