diff options
Diffstat (limited to 'configure.ac')
| -rw-r--r-- | configure.ac | 29 |
1 files changed, 24 insertions, 5 deletions
diff --git a/configure.ac b/configure.ac index 7b6f91a..936b22d 100644 --- a/configure.ac +++ b/configure.ac @@ -32,13 +32,32 @@ AC_GNU_SOURCE AC_SUBST(PACKAGE_URL, [http://0pointer.de/lennart/projects/syrep/]) -# If using GCC specifiy some additional parameters +# GCC flags + +test_gcc_flag() { + AC_LANG_CONFTEST([int main() {}]) + $CC -c conftest.c $CFLAGS $@ > /dev/null 2> /dev/null + ret=$? + rm -f conftest.o + return $ret +} + +# If using GCC specify some additional parameters if test "x$GCC" = "xyes" ; then - CFLAGS="$CFLAGS -pipe -W -Wall -pedantic" - AC_LANG_CONFTEST([int main() {}]) - $CC -c conftest.c -std=c99 -Wno-unused-parameter $CFLAGS > /dev/null 2> /dev/null && CFLAGS="$CFLAGS -std=c99 -Wno-unused-parameter" - rm -f conftest.o + # We use gnu99 instead of c99 because many have interpreted the standard + # in a way that int64_t isn't defined on non-64 bit platforms. + DESIRED_FLAGS="-std=gnu99 -Wall -W -Wextra -pedantic -pipe -Wformat -Wold-style-definition -Wdeclaration-after-statement -Wfloat-equal -Wmissing-declarations -Wmissing-prototypes -Wstrict-prototypes -Wredundant-decls -Wmissing-noreturn -Wshadow -Wendif-labels -Wpointer-arith -Wbad-function-cast -Wcast-qual -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter" + + for flag in $DESIRED_FLAGS ; do + AC_MSG_CHECKING([whether $CC accepts $flag]) + if test_gcc_flag $flag ; then + CFLAGS="$CFLAGS $flag" + AC_MSG_RESULT([yes]) + else + AC_MSG_RESULT([no]) + fi + done fi if type -p stow > /dev/null && test -d /usr/local/stow ; then |