build-sys: modernize build system

1 files changed, 63 insertions, 36 deletions

diff --git a/configure.ac b/configure.ac
index 7024cbc..5a77363 100644
--- a/configure.ac
+++ b/configure.ac
@@ -18,23 +18,27 @@
 # You should have received a copy of the GNU General Public License
 # along with RealtimeKit. If not, see <http://www.gnu.org/licenses/>.
 
-AC_PREREQ(2.63)
+AC_PREREQ(2.68)
+
+AC_INIT([rtkit],
+        [0.11],
+        [mzegxvg (at) 0pointer (dot) net],
+        [rtkit],
+        [http://git.0pointer.de/?p=rtkit.git])
 
-AC_INIT([rtkit], 0.10, [mzegxvg (at) 0pointer (dot) net])
 AC_CONFIG_SRCDIR([rtkit-daemon.c])
 AC_CONFIG_HEADERS([config.h])
 AC_CONFIG_MACRO_DIR(m4)
+AC_CONFIG_AUX_DIR([build-aux])
 
-AM_INIT_AUTOMAKE([foreign 1.11 -Wno-portability silent-rules -Wall])
-m4_ifdef([AM_SILENT_RULES], [AM_SILENT_RULES([yes])])
-
-AC_SUBST(PACKAGE_URL, [http://git.0pointer.de/?p=rtkit.git])
+AM_INIT_AUTOMAKE([foreign 1.11 -Wno-portability silent-rules -Wall tar-pax no-dist-gzip dist-xz])
+AM_SILENT_RULES([yes])
 
 AC_CANONICAL_HOST
 
 if type -p stow > /dev/null && test -d /usr/local/stow ; then
-   AC_MSG_NOTICE([*** Found /usr/local/stow: default install prefix set to /usr/local/stow/${PACKAGE_NAME}-${PACKAGE_VERSION} ***])
-   ac_default_prefix="/usr/local/stow/${PACKAGE_NAME}-${PACKAGE_VERSION}"
+        AC_MSG_NOTICE([*** Found /usr/local/stow: default install prefix set to /usr/local/stow/${PACKAGE_NAME}-${PACKAGE_VERSION} ***])
+        ac_default_prefix="/usr/local/stow/${PACKAGE_NAME}-${PACKAGE_VERSION}"
 fi
 
 #### Checks for programs. ####
@@ -46,43 +50,66 @@ AC_PROG_CC_C99
 AM_PROG_CC_C_O
 AC_PROG_GCC_TRADITIONAL
 AC_USE_SYSTEM_EXTENSIONS
+AC_SYS_LARGEFILE
 
 # GCC flags
 
-test_gcc_flag() {
-    AC_LANG_CONFTEST([int main(int argc, char*argv[]) {}])
-    $CC -c conftest.c $CFLAGS "$1" -o conftest.o > /dev/null 2> /dev/null
-    ret=$?
-    rm -f conftest.o
-    return $ret
-}
-
-# If using GCC specify some additional parameters
-if test "x$GCC" = "xyes" ; then
-
-    # 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 -Wcast-align -Wwrite-strings -Winline -Wno-unused-parameter -ffast-math"
-
-    for flag in $DESIRED_FLAGS ; do
-        AC_MSG_CHECKING([whether $CC accepts $flag])
-        if test_gcc_flag $flag ; then
-           CFLAGS="$CFLAGS $flag"
-           CXXFLAGS="$CXXFLAGS $flag"
-           AC_MSG_RESULT([yes])
-        else
-           AC_MSG_RESULT([no])
-        fi
-    done
-fi
+CC_CHECK_FLAGS_APPEND([with_cflags], [CFLAGS], [\
+        -pipe \
+        -Wall \
+        -W \
+        -Wextra \
+        -Winline \
+        -Wvla \
+        -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=2 \
+        -Wwrite-strings \
+        -Wno-long-long \
+        -Wno-overlength-strings \
+        -Wno-unused-parameter \
+        -Wno-missing-field-initializers \
+        -Wno-unused-result \
+        -Wunsafe-loop-optimizations \
+        -Wpacked \
+        -Werror=overflow \
+        -Wp,-D_FORTIFY_SOURCE=2 \
+        -ffast-math \
+        -fno-common \
+        -fdiagnostics-show-option \
+        -fno-strict-aliasing \
+        -ffunction-sections \
+        -fdata-sections])
+AC_SUBST([WARNINGFLAGS], $with_cflags)
+
+CC_CHECK_FLAGS_APPEND([with_ldflags], [LDFLAGS], [\
+        -Wl,--as-needed \
+        -Wl,--gc-sections])
+AC_SUBST([GCLDFLAGS], $with_ldflags)
 
 ACX_PTHREAD
 LIBS="$PTHREAD_LIBS $LIBS"
 CFLAGS="$CFLAGS $PTHREAD_CFLAGS"
 CC="$PTHREAD_CC"
 
-AC_SYS_LARGEFILE
-
 AC_SEARCH_LIBS([sched_setscheduler], [rt])
 AC_SEARCH_LIBS([clock_gettime], [rt])
 AC_SEARCH_LIBS([cap_init], [cap])