diff options
Diffstat (limited to 'acinclude.m4')
| -rw-r--r-- | acinclude.m4 | 88 |
1 files changed, 88 insertions, 0 deletions
diff --git a/acinclude.m4 b/acinclude.m4 index 7dfad70..e775c28 100644 --- a/acinclude.m4 +++ b/acinclude.m4 @@ -115,3 +115,91 @@ define([GNUPG_CHECK_MLOCK], fi fi ]) + +dnl +dnl taken from libvirt which was +dnl taken from gnome-common/macros2/gnome-compiler-flags.m4 +dnl +dnl We've added: +dnl -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return -Wstrict-prototypes -Winline -Wredundant-decls +dnl We've removed +dnl CFLAGS="$realsave_CFLAGS" +dnl to avoid clobbering user-specified CFLAGS +dnl +AC_DEFUN([KA_COMPILE_WARNINGS],[ + dnl ****************************** + dnl More compiler warnings + dnl ****************************** + + AC_ARG_ENABLE(compile-warnings, + AC_HELP_STRING([--enable-compile-warnings=@<:@no/minimum/yes/maximum/error@:>@], + [Turn on compiler warnings]),, + [enable_compile_warnings="m4_default([$1],[maximum])"]) + + warnCFLAGS= + + common_flags="-Wp,-D_FORTIFY_SOURCE=2 -fexceptions -fasynchronous-unwind-tables" + + case "$enable_compile_warnings" in + no) + try_compiler_flags="" + ;; + minimum) + try_compiler_flags="-Wall -Wformat -Wformat-security $common_flags" + ;; + yes) + try_compiler_flags="-Wall -Wformat -Wformat-security -Wmissing-prototypes $common_flags" + ;; + maximum|error) + try_compiler_flags="-Wall -Wformat -Wformat-security -Wmissing-prototypes -Wnested-externs -Wpointer-arith" + try_compiler_flags="$try_compiler_flags -Wextra -Wshadow -Wcast-align -Wwrite-strings -Waggregate-return" + try_compiler_flags="$try_compiler_flags -Wstrict-prototypes -Winline -Wredundant-decls -Wno-sign-compare" + try_compiler_flags="$try_compiler_flags $common_flags" + if test "$enable_compile_warnings" = "error" ; then + try_compiler_flags="$try_compiler_flags -Werror" + fi + ;; + *) + AC_MSG_ERROR(Unknown argument '$enable_compile_warnings' to --enable-compile-warnings) + ;; + esac + + COMPILER_FLAGS= + for option in $try_compiler_flags; do + gl_COMPILER_FLAGS($option) + done + unset option + unset try_compiler_flags + + AC_ARG_ENABLE(iso-c, + AC_HELP_STRING([--enable-iso-c], + [Try to warn if code is not ISO C ]),, + [enable_iso_c=no]) + + AC_MSG_CHECKING(what language compliance flags to pass to the C compiler) + complCFLAGS= + if test "x$enable_iso_c" != "xno"; then + if test "x$GCC" = "xyes"; then + case " $CFLAGS " in + *[\ \ ]-ansi[\ \ ]*) ;; + *) complCFLAGS="$complCFLAGS -ansi" ;; + esac + case " $CFLAGS " in + *[\ \ ]-pedantic[\ \ ]*) ;; + *) complCFLAGS="$complCFLAGS -pedantic" ;; + esac + fi + fi + AC_MSG_RESULT($complCFLAGS) + + WARN_CFLAGS="$COMPILER_FLAGS $complCFLAGS" + AC_SUBST(WARN_CFLAGS) + + dnl Needed to keep compile quiet on python 2.4 + COMPILER_FLAGS= + gl_COMPILER_FLAGS(-Wno-redundant-decls) + WARN_PYTHON_CFLAGS=$COMPILER_FLAGS + AC_SUBST(WARN_PYTHON_CFLAGS) +]) + +m4_include([m4/compiler-flags.m4]) |