diff options
Diffstat (limited to 'sim/m4/sim_ac_option_warnings.m4')
| -rw-r--r-- | sim/m4/sim_ac_option_warnings.m4 | 41 |
1 files changed, 33 insertions, 8 deletions
diff --git a/sim/m4/sim_ac_option_warnings.m4 b/sim/m4/sim_ac_option_warnings.m4 index 16d358b..b66e0ec 100644 --- a/sim/m4/sim_ac_option_warnings.m4 +++ b/sim/m4/sim_ac_option_warnings.m4 @@ -15,8 +15,7 @@ dnl along with this program. If not, see <http://www.gnu.org/licenses/>. dnl dnl --enable-build-warnings is for developers of the simulator. dnl it enables extra GCC specific warnings. -AC_DEFUN([SIM_AC_OPTION_WARNINGS], -[ +AC_DEFUN([SIM_AC_OPTION_WARNINGS], [dnl AC_ARG_ENABLE(werror, AS_HELP_STRING([--enable-werror], [treat compile warnings as errors]), [case "${enableval}" in @@ -49,11 +48,21 @@ build_warnings="-Wall -Wdeclaration-after-statement -Wpointer-arith -Wold-style-declaration -Wold-style-definition " -# Enable -Wno-format by default when using gcc on mingw since many -# GCC versions complain about %I64. case "${host}" in - *-*-mingw32*) build_warnings="$build_warnings -Wno-format" ;; - *) build_warnings="$build_warnings -Wformat-nonliteral" ;; + *-*-mingw32*) + # Enable -Wno-format by default when using gcc on mingw since many + # GCC versions complain about %I64. + build_warnings="$build_warnings -Wno-format" ;; + *-*-solaris*) + # Solaris 11.4 <python2.7/ceval.h> uses #pragma no_inline that GCC + # doesn't understand. + build_warnings="$build_warnings -Wno-unknown-pragmas" + # Solaris 11 <unistd.h> marks vfork deprecated. + build_warnings="$build_warnings -Wno-deprecated-declarations" ;; + *) + # Note that gcc requires -Wformat for -Wformat-nonliteral to work, + # but there's a special case for this below. + build_warnings="$build_warnings -Wformat-nonliteral" ;; esac AC_ARG_ENABLE(build-warnings, @@ -91,11 +100,27 @@ then # Separate out the -Werror flag as some files just cannot be # compiled with it enabled. for w in ${build_warnings}; do + # GCC does not complain about -Wno-unknown-warning. Invert + # and test -Wunknown-warning instead. + case $w in + -Wno-*) + wtest=`echo $w | sed 's/-Wno-/-W/g'` ;; + -Wformat-nonliteral) + # gcc requires -Wformat before -Wformat-nonliteral + # will work, so stick them together. + w="-Wformat $w" + wtest="$w" + ;; + *) + wtest=$w ;; + esac + case $w in -Werr*) WERROR_CFLAGS=-Werror ;; - *) # Check that GCC accepts it + *) + # Check whether GCC accepts it. saved_CFLAGS="$CFLAGS" - CFLAGS="$CFLAGS -Werror $w" + CFLAGS="$CFLAGS -Werror $wtest" AC_TRY_COMPILE([],[],WARN_CFLAGS="${WARN_CFLAGS} $w",) CFLAGS="$saved_CFLAGS" esac |