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Diffstat (limited to 'configure.ac')
-rw-r--r-- | configure.ac | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/configure.ac b/configure.ac index 9b73bc1f..5a78ffb9 100644 --- a/configure.ac +++ b/configure.ac @@ -102,7 +102,13 @@ if test "x$M4" = xno ; then fi dnl Compiler flags + +# Some compilers (e.g. clang) default to a warning on an unkown command line option. +# Change that temporarily to an error, for the CC_CHECK_CFLAGS_APPEND macro to work. +save_CC="$CC" +CC="$CC -Werror" CC_CHECK_CFLAGS_APPEND([-Wall -W -Wextra -pipe -Wno-long-long -Wvla -Wno-overlength-strings -Wunsafe-loop-optimizations -Wundef -Wformat=2 -Wlogical-op -Wsign-compare -Wformat-security -Wmissing-include-dirs -Wformat-nonliteral -Wold-style-definition -Wpointer-arith -Winit-self -Wdeclaration-after-statement -Wfloat-equal -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-declarations -Wmissing-noreturn -Wshadow -Wendif-labels -Wcast-align -Wstrict-aliasing -Wwrite-strings -Wno-unused-parameter -ffast-math -Wp,-D_FORTIFY_SOURCE=2 -fno-common -fdiagnostics-show-option]) +CC="$save_CC" dnl Linker flags. dnl Check whether the linker supports the -version-script option. |