From 2e8be3fa0df7b6ccf953572ab341ddd9c45db878 Mon Sep 17 00:00:00 2001 From: Lennart Poettering Date: Tue, 15 May 2012 15:24:31 +0200 Subject: build-sys: modernize build system --- Makefile.am | 6 ++ autogen.sh | 49 ++++++++++ bootstrap.sh | 61 ------------ configure.ac | 99 ++++++++++++------- m4/attributes.m4 | 288 +++++++++++++++++++++++++++++++++++++++++++++++++++++++ 5 files changed, 406 insertions(+), 97 deletions(-) create mode 100755 autogen.sh delete mode 100755 bootstrap.sh create mode 100644 m4/attributes.m4 diff --git a/Makefile.am b/Makefile.am index 7f5e8f2..53beb69 100644 --- a/Makefile.am +++ b/Makefile.am @@ -15,6 +15,9 @@ # You should have received a copy of the GNU General Public License # along with RealtimeKit. If not, see . +AM_CFLAGS = $(WARNINGFLAGS) $(PTHREAD_CFLAGS) +AM_LDFLAGS = $(GCLDFLAGS) + ACLOCAL_AMFLAGS = -I m4 policykitdir = $(datadir)/polkit-1/actions/ @@ -58,6 +61,7 @@ rtkit_daemon_SOURCES = \ rtkit_daemon_LDADD = \ $(DBUS_LIBS) rtkit_daemon_CFLAGS = \ + $(AM_CFLAGS) \ $(DBUS_CFLAGS) rtkitctl_SOURCES = \ @@ -65,6 +69,7 @@ rtkitctl_SOURCES = \ rtkitctl_LDADD = \ $(DBUS_LIBS) rtkitctl_CFLAGS = \ + $(AM_CFLAGS) \ $(DBUS_CFLAGS) rtkit_test_SOURCES = \ @@ -72,6 +77,7 @@ rtkit_test_SOURCES = \ rtkit_test_LDADD = \ $(DBUS_LIBS) rtkit_test_CFLAGS = \ + $(AM_CFLAGS) \ $(DBUS_CFLAGS) org.freedesktop.RealtimeKit1.service: org.freedesktop.RealtimeKit1.service.in diff --git a/autogen.sh b/autogen.sh new file mode 100755 index 0000000..97bc9b2 --- /dev/null +++ b/autogen.sh @@ -0,0 +1,49 @@ +#!/bin/bash + +# This file is part of RealtimeKit. +# +# Copyright 2009 Lennart Poettering +# +# RealtimeKit is free software: you can redistribute it and/or modify +# it under the terms of the GNU General Public License as published by +# the Free Software Foundation, either version 3 of the License, or +# (at your option) any later version. +# +# RealtimeKit is distributed in the hope that it will be useful, but +# WITHOUT ANY WARRANTY; without even the implied warranty of +# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU +# General Public License for more details. +# +# You should have received a copy of the GNU General Public License +# along with RealtimeKit. If not, see . + +if [ -f .git/hooks/pre-commit.sample -a ! -f .git/hooks/pre-commit ] ; then + cp -p .git/hooks/pre-commit.sample .git/hooks/pre-commit && \ + chmod +x .git/hooks/pre-commit && \ + echo "Activated pre-commit hook." +fi + +autoreconf --force --install --symlink + +libdir() { + echo $(cd $1/$(gcc -print-multi-os-directory); pwd) +} + +args="\ +--sysconfdir=/etc \ +--localstatedir=/var \ +--libdir=$(libdir /usr/lib) \ +--libexecdir=/usr/lib" + +if [ "x$1" == "xc" ]; then + ./configure CFLAGS='-g -O0 -Wp,-U_FORTIFY_SOURCE' $args + make clean +else + echo + echo "----------------------------------------------------------------" + echo "Initialized build system. For a common configuration please run:" + echo "----------------------------------------------------------------" + echo + echo "./configure CFLAGS='-g -O0 -Wp,-U_FORTIFY_SOURCE' $args" + echo +fi diff --git a/bootstrap.sh b/bootstrap.sh deleted file mode 100755 index eb0f80f..0000000 --- a/bootstrap.sh +++ /dev/null @@ -1,61 +0,0 @@ -#!/bin/bash - -# This file is part of RealtimeKit. -# -# Copyright 2009 Lennart Poettering -# -# RealtimeKit is free software: you can redistribute it and/or modify -# it under the terms of the GNU General Public License as published by -# the Free Software Foundation, either version 3 of the License, or -# (at your option) any later version. -# -# RealtimeKit is distributed in the hope that it will be useful, but -# WITHOUT ANY WARRANTY; without even the implied warranty of -# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU -# General Public License for more details. -# -# You should have received a copy of the GNU General Public License -# along with RealtimeKit. If not, see . - -VERSION=1.9 - -run_versioned() { - local P - local V - - V=$(echo "$2" | sed -e 's,\.,,g') - - if [ -e "`which $1$V 2> /dev/null`" ] ; then - P="$1$V" - else - if [ -e "`which $1-$2 2> /dev/null`" ] ; then - P="$1-$2" - else - P="$1" - fi - fi - - shift 2 - "$P" "$@" -} - -set -ex - -if [ "x$1" = "xam" ] ; then - run_versioned automake "$VERSION" -a -c --foreign - ./config.status -else - rm -rf autom4te.cache - rm -f config.cache - - mkdir -p m4 - run_versioned aclocal "$VERSION" -I m4 - run_versioned autoconf 2.59 -Wall - run_versioned autoheader 2.59 - run_versioned automake "$VERSION" --copy --foreign --add-missing - - if test "x$NOCONFIGURE" = "x"; then - CFLAGS="-g -O0" ./configure --sysconfdir=/etc --localstatedir=/var "$@" - make clean - fi -fi 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 . -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]) diff --git a/m4/attributes.m4 b/m4/attributes.m4 new file mode 100644 index 0000000..e354375 --- /dev/null +++ b/m4/attributes.m4 @@ -0,0 +1,288 @@ +dnl Macros to check the presence of generic (non-typed) symbols. +dnl Copyright (c) 2006-2008 Diego Pettenò +dnl Copyright (c) 2006-2008 xine project +dnl Copyright (c) 2012 Lucas De Marchi +dnl +dnl This program is free software; you can redistribute it and/or modify +dnl it under the terms of the GNU General Public License as published by +dnl the Free Software Foundation; either version 2, or (at your option) +dnl any later version. +dnl +dnl This program is distributed in the hope that it will be useful, +dnl but WITHOUT ANY WARRANTY; without even the implied warranty of +dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the +dnl GNU General Public License for more details. +dnl +dnl You should have received a copy of the GNU General Public License +dnl along with this program; if not, write to the Free Software +dnl Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA +dnl 02110-1301, USA. +dnl +dnl As a special exception, the copyright owners of the +dnl macro gives unlimited permission to copy, distribute and modify the +dnl configure scripts that are the output of Autoconf when processing the +dnl Macro. You need not follow the terms of the GNU General Public +dnl License when using or distributing such scripts, even though portions +dnl of the text of the Macro appear in them. The GNU General Public +dnl License (GPL) does govern all other use of the material that +dnl constitutes the Autoconf Macro. +dnl +dnl This special exception to the GPL applies to versions of the +dnl Autoconf Macro released by this project. When you make and +dnl distribute a modified version of the Autoconf Macro, you may extend +dnl this special exception to the GPL to apply to your modified version as +dnl well. + +dnl Check if FLAG in ENV-VAR is supported by compiler and append it +dnl to WHERE-TO-APPEND variable +dnl CC_CHECK_FLAG_APPEND([WHERE-TO-APPEND], [ENV-VAR], [FLAG]) + +AC_DEFUN([CC_CHECK_FLAG_APPEND], [ + AC_CACHE_CHECK([if $CC supports flag $3 in envvar $2], + AS_TR_SH([cc_cv_$2_$3]), + [eval "AS_TR_SH([cc_save_$2])='${$2}'" + eval "AS_TR_SH([$2])='$3'" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([int a = 0; int main(void) { return a; } ])], + [eval "AS_TR_SH([cc_cv_$2_$3])='yes'"], + [eval "AS_TR_SH([cc_cv_$2_$3])='no'"]) + eval "AS_TR_SH([$2])='$cc_save_$2'"]) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_$2_$3])[ = xyes], + [eval "$1='${$1} $3'"]) +]) + +dnl CC_CHECK_FLAGS_APPEND([WHERE-TO-APPEND], [ENV-VAR], [FLAG1 FLAG2]) +AC_DEFUN([CC_CHECK_FLAGS_APPEND], [ + for flag in $3; do + CC_CHECK_FLAG_APPEND($1, $2, $flag) + done +]) + +dnl Check if the flag is supported by linker (cacheable) +dnl CC_CHECK_LDFLAGS([FLAG], [ACTION-IF-FOUND],[ACTION-IF-NOT-FOUND]) + +AC_DEFUN([CC_CHECK_LDFLAGS], [ + AC_CACHE_CHECK([if $CC supports $1 flag], + AS_TR_SH([cc_cv_ldflags_$1]), + [ac_save_LDFLAGS="$LDFLAGS" + LDFLAGS="$LDFLAGS $1" + AC_LINK_IFELSE([int main() { return 1; }], + [eval "AS_TR_SH([cc_cv_ldflags_$1])='yes'"], + [eval "AS_TR_SH([cc_cv_ldflags_$1])="]) + LDFLAGS="$ac_save_LDFLAGS" + ]) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_ldflags_$1])[ = xyes], + [$2], [$3]) +]) + +dnl define the LDFLAGS_NOUNDEFINED variable with the correct value for +dnl the current linker to avoid undefined references in a shared object. +AC_DEFUN([CC_NOUNDEFINED], [ + dnl We check $host for which systems to enable this for. + AC_REQUIRE([AC_CANONICAL_HOST]) + + case $host in + dnl FreeBSD (et al.) does not complete linking for shared objects when pthreads + dnl are requested, as different implementations are present; to avoid problems + dnl use -Wl,-z,defs only for those platform not behaving this way. + *-freebsd* | *-openbsd*) ;; + *) + dnl First of all check for the --no-undefined variant of GNU ld. This allows + dnl for a much more readable commandline, so that people can understand what + dnl it does without going to look for what the heck -z defs does. + for possible_flags in "-Wl,--no-undefined" "-Wl,-z,defs"; do + CC_CHECK_LDFLAGS([$possible_flags], [LDFLAGS_NOUNDEFINED="$possible_flags"]) + break + done + ;; + esac + + AC_SUBST([LDFLAGS_NOUNDEFINED]) +]) + +dnl Check for a -Werror flag or equivalent. -Werror is the GCC +dnl and ICC flag that tells the compiler to treat all the warnings +dnl as fatal. We usually need this option to make sure that some +dnl constructs (like attributes) are not simply ignored. +dnl +dnl Other compilers don't support -Werror per se, but they support +dnl an equivalent flag: +dnl - Sun Studio compiler supports -errwarn=%all +AC_DEFUN([CC_CHECK_WERROR], [ + AC_CACHE_CHECK( + [for $CC way to treat warnings as errors], + [cc_cv_werror], + [CC_CHECK_CFLAGS_SILENT([-Werror], [cc_cv_werror=-Werror], + [CC_CHECK_CFLAGS_SILENT([-errwarn=%all], [cc_cv_werror=-errwarn=%all])]) + ]) +]) + +AC_DEFUN([CC_CHECK_ATTRIBUTE], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([if $CC supports __attribute__(( ifelse([$2], , [$1], [$2]) ))], + AS_TR_SH([cc_cv_attribute_$1]), + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + AC_COMPILE_IFELSE([AC_LANG_SOURCE([$3])], + [eval "AS_TR_SH([cc_cv_attribute_$1])='yes'"], + [eval "AS_TR_SH([cc_cv_attribute_$1])='no'"]) + CFLAGS="$ac_save_CFLAGS" + ]) + + AS_IF([eval test x$]AS_TR_SH([cc_cv_attribute_$1])[ = xyes], + [AC_DEFINE( + AS_TR_CPP([SUPPORT_ATTRIBUTE_$1]), 1, + [Define this if the compiler supports __attribute__(( ifelse([$2], , [$1], [$2]) ))] + ) + $4], + [$5]) +]) + +AC_DEFUN([CC_ATTRIBUTE_CONSTRUCTOR], [ + CC_CHECK_ATTRIBUTE( + [constructor],, + [void __attribute__((constructor)) ctor() { int a; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_FORMAT], [ + CC_CHECK_ATTRIBUTE( + [format], [format(printf, n, n)], + [void __attribute__((format(printf, 1, 2))) printflike(const char *fmt, ...) { fmt = (void *)0; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_FORMAT_ARG], [ + CC_CHECK_ATTRIBUTE( + [format_arg], [format_arg(printf)], + [char *__attribute__((format_arg(1))) gettextlike(const char *fmt) { fmt = (void *)0; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_VISIBILITY], [ + CC_CHECK_ATTRIBUTE( + [visibility_$1], [visibility("$1")], + [void __attribute__((visibility("$1"))) $1_function() { }], + [$2], [$3]) +]) + +AC_DEFUN([CC_ATTRIBUTE_NONNULL], [ + CC_CHECK_ATTRIBUTE( + [nonnull], [nonnull()], + [void __attribute__((nonnull())) some_function(void *foo, void *bar) { foo = (void*)0; bar = (void*)0; }], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_UNUSED], [ + CC_CHECK_ATTRIBUTE( + [unused], , + [void some_function(void *foo, __attribute__((unused)) void *bar);], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_SENTINEL], [ + CC_CHECK_ATTRIBUTE( + [sentinel], , + [void some_function(void *foo, ...) __attribute__((sentinel));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_DEPRECATED], [ + CC_CHECK_ATTRIBUTE( + [deprecated], , + [void some_function(void *foo, ...) __attribute__((deprecated));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_ALIAS], [ + CC_CHECK_ATTRIBUTE( + [alias], [weak, alias], + [void other_function(void *foo) { } + void some_function(void *foo) __attribute__((weak, alias("other_function")));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_MALLOC], [ + CC_CHECK_ATTRIBUTE( + [malloc], , + [void * __attribute__((malloc)) my_alloc(int n);], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_PACKED], [ + CC_CHECK_ATTRIBUTE( + [packed], , + [struct astructure { char a; int b; long c; void *d; } __attribute__((packed));], + [$1], [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_CONST], [ + CC_CHECK_ATTRIBUTE( + [const], , + [int __attribute__((const)) twopow(int n) { return 1 << n; } ], + [$1], [$2]) +]) + +AC_DEFUN([CC_FLAG_VISIBILITY], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([if $CC supports -fvisibility=hidden], + [cc_cv_flag_visibility], + [cc_flag_visibility_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + CC_CHECK_CFLAGS_SILENT([-fvisibility=hidden], + cc_cv_flag_visibility='yes', + cc_cv_flag_visibility='no') + CFLAGS="$cc_flag_visibility_save_CFLAGS"]) + + AS_IF([test "x$cc_cv_flag_visibility" = "xyes"], + [AC_DEFINE([SUPPORT_FLAG_VISIBILITY], 1, + [Define this if the compiler supports the -fvisibility flag]) + $1], + [$2]) +]) + +AC_DEFUN([CC_FUNC_EXPECT], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([if compiler has __builtin_expect function], + [cc_cv_func_expect], + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + AC_COMPILE_IFELSE([AC_LANG_SOURCE( + [int some_function() { + int a = 3; + return (int)__builtin_expect(a, 3); + }])], + [cc_cv_func_expect=yes], + [cc_cv_func_expect=no]) + CFLAGS="$ac_save_CFLAGS" + ]) + + AS_IF([test "x$cc_cv_func_expect" = "xyes"], + [AC_DEFINE([SUPPORT__BUILTIN_EXPECT], 1, + [Define this if the compiler supports __builtin_expect() function]) + $1], + [$2]) +]) + +AC_DEFUN([CC_ATTRIBUTE_ALIGNED], [ + AC_REQUIRE([CC_CHECK_WERROR]) + AC_CACHE_CHECK([highest __attribute__ ((aligned ())) supported], + [cc_cv_attribute_aligned], + [ac_save_CFLAGS="$CFLAGS" + CFLAGS="$CFLAGS $cc_cv_werror" + for cc_attribute_align_try in 64 32 16 8 4 2; do + AC_COMPILE_IFELSE([AC_LANG_SOURCE([ + int main() { + static char c __attribute__ ((aligned($cc_attribute_align_try))) = 0; + return c; + }])], [cc_cv_attribute_aligned=$cc_attribute_align_try; break]) + done + CFLAGS="$ac_save_CFLAGS" + ]) + + if test "x$cc_cv_attribute_aligned" != "x"; then + AC_DEFINE_UNQUOTED([ATTRIBUTE_ALIGNED_MAX], [$cc_cv_attribute_aligned], + [Define the highest alignment supported]) + fi +]) -- cgit