#
# When this file changes, rerun autogen.sh.
#
AC_PREREQ(2.69)
AC_INIT([libdispatch], [1.3], [libdispatch@macosforge.org], [libdispatch], [http://libdispatch.macosforge.org])
AC_REVISION([$$])
AC_CONFIG_AUX_DIR(config)
AC_CONFIG_HEADER([config/config_ac.h])
AC_CONFIG_MACRO_DIR([m4])
ac_clean_files=a.out.dSYM
AM_MAINTAINER_MODE
AC_PROG_CC([clang gcc cc])
AC_PROG_CXX([clang++ g++ c++])
AC_PROG_OBJC([clang gcc cc])
AC_PROG_OBJCXX([clang++ g++ c++])
#
# On Mac OS X, some required header files come from other source packages;
# allow specifying where those are.
#
AC_ARG_WITH([apple-libpthread-source],
[AS_HELP_STRING([--with-apple-libpthread-source],
[Specify path to Apple libpthread source])], [
apple_libpthread_source_path=${withval}
CPPFLAGS="$CPPFLAGS -isystem $apple_libpthread_source_path"
])
AC_ARG_WITH([apple-libplatform-source],
[AS_HELP_STRING([--with-apple-libplatform-source],
[Specify path to Apple libplatform source])], [
apple_libplatform_source_include_path=${withval}/include
CPPFLAGS="$CPPFLAGS -isystem $apple_libplatform_source_include_path"
])
AC_ARG_WITH([apple-libclosure-source],
[AS_HELP_STRING([--with-apple-libclosure-source],
[Specify path to Apple libclosure source])], [
apple_libclosure_source_path=${withval}
CPPFLAGS="$CPPFLAGS -isystem $apple_libclosure_source_path"
])
AC_ARG_WITH([apple-xnu-source],
[AS_HELP_STRING([--with-apple-xnu-source],
[Specify path to Apple XNU source])], [
apple_xnu_source_libsyscall_path=${withval}/libsyscall
apple_xnu_source_libproc_path=${withval}/libsyscall/wrappers/libproc
apple_xnu_source_libkern_path=${withval}/libkern
apple_xnu_source_bsd_path=${withval}/bsd
apple_xnu_source_osfmk_path=${withval}/osfmk
CPPFLAGS="$CPPFLAGS -idirafter $apple_xnu_source_libkern_path -isystem $apple_xnu_source_bsd_path -isystem $apple_xnu_source_libsyscall_path -isystem $apple_xnu_source_libproc_path "
])
AC_ARG_WITH([apple-objc4-source],
[AS_HELP_STRING([--with-apple-objc4-source],
[Specify path to Apple objc4 source])], [
apple_objc4_source_runtime_path=${withval}/runtime
])
AC_CACHE_CHECK([for System.framework/PrivateHeaders], dispatch_cv_system_privateheaders,
[AS_IF([test -d /System/Library/Frameworks/System.framework/PrivateHeaders],
[dispatch_cv_system_privateheaders=yes], [dispatch_cv_system_privateheaders=no])]
)
AS_IF([test "x$dispatch_cv_system_privateheaders" != "xno"],
[CPPFLAGS="$CPPFLAGS -isystem /System/Library/Frameworks/System.framework/PrivateHeaders"]
)
#
# On Mac OS X, libdispatch_init is automatically invoked during libSystem
# process initialization. On other systems, it is tagged as a library
# constructor to be run by automatically by the runtime linker.
#
AC_ARG_ENABLE([libdispatch-init-constructor],
[AS_HELP_STRING([--disable-libdispatch-init-constructor],
[Disable libdispatch_init as a constructor])],,
[AS_IF([test -f /usr/lib/system/libdispatch.dylib],
[enable_libdispatch_init_constructor=no])]
)
AS_IF([test "x$enable_libdispatch_init_constructor" != "xno"],
[AC_DEFINE(USE_LIBDISPATCH_INIT_CONSTRUCTOR, 1,
[Define to tag libdispatch_init as a constructor])]
)
#
# On Mac OS X libdispatch can use the non-portable direct pthread TSD functions
#
AC_ARG_ENABLE([apple-tsd-optimizations],
[AS_HELP_STRING([--enable-apple-tsd-optimizations],
[Use non-portable pthread TSD optimizations for Mac OS X.])]
)
AS_IF([test "x$enable_apple_tsd_optimizations" = "xyes"],
[AC_DEFINE(USE_APPLE_TSD_OPTIMIZATIONS, 1,
[Define to use non-portable pthread TSD optimizations for Mac OS X)])]
)
AC_CANONICAL_TARGET
#
# Enable building Swift overlay support into libdispatch
#
AC_ARG_WITH([swift-toolchain],
[AS_HELP_STRING([--with-swift-toolchain], [Specify path to Swift toolchain])],
[swift_toolchain_path=${withval}
AC_DEFINE(HAVE_SWIFT, 1, [Define if building for Swift])
SWIFTC="$swift_toolchain_path/bin/swiftc"
case $target_os in
linux*)
os_string="linux"
;;
*)
os_string=$target_os
;;
esac
SWIFT_LIBDIR="$swift_toolchain_path/lib/swift/$os_string/$target_cpu"
have_swift=true],
[have_swift=false]
)
AM_CONDITIONAL(HAVE_SWIFT, $have_swift)
AC_SUBST([SWIFTC])
AC_SUBST([SWIFT_LIBDIR])
#
# Enable use of gold linker when building the Swift overlay
# to avoid a symbol relocation issue.
# Ultimately the request to use gold should be passed in as an arg
#
AC_CHECK_PROG(use_gold_linker, ld.gold, true, false)
AM_CONDITIONAL(USE_GOLD_LINKER, $use_gold_linker)
#
# Enable __thread based TSD on platforms where it is efficient
# Allow override based on command line argument to configure
#
AC_ARG_ENABLE([thread-local-storage],
[AS_HELP_STRING([--enable-thread-local-storage],
[Enable usage of thread local storage via __thread])],,
[case $target_os in
linux*)
enable_thread_local_storage=yes
;;
*)
enable_thread_local_storage=no
esac]
)
AS_IF([test "x$enable_thread_local_storage" = "xyes"],
[AC_DEFINE(DISPATCH_USE_THREAD_LOCAL_STORAGE, 1,
[Enable usage of thread local storage via __thread])]
)
AC_USE_SYSTEM_EXTENSIONS
AM_INIT_AUTOMAKE([foreign no-dependencies subdir-objects])
LT_INIT([disable-static])
AC_PROG_INSTALL
AC_PATH_PROGS(MIG, mig)
AC_PATH_PROG(DTRACE, dtrace)
AS_IF([test "x$DTRACE" != "x"], [use_dtrace=true],[
use_dtrace=false
CPPFLAGS="$CPPFLAGS -DDISPATCH_USE_DTRACE=0"
])
AM_CONDITIONAL(USE_DTRACE, $use_dtrace)
AC_PATH_PROG(LEAKS, leaks)
AS_IF([test "x$LEAKS" != "x"],
[AC_DEFINE(HAVE_LEAKS, 1, [Define if Apple leaks program is present])
have_leaks=true],
[have_leaks=false]
)
AM_CONDITIONAL(HAVE_LEAKS, $have_leaks)
DISPATCH_C_ATOMIC_BUILTINS
case $dispatch_cv_atomic in
yes) ;;
-march*) MARCH_FLAGS="$dispatch_cv_atomic"
AC_SUBST([MARCH_FLAGS]) ;;
*) AC_MSG_ERROR([No gcc builtin atomic operations available]) ;;
esac
#
# Find libraries we will need
#
AC_SEARCH_LIBS(clock_gettime, rt)
AC_SEARCH_LIBS(pthread_create, pthread)
#
# Prefer native kqueue(2); otherwise use libkqueue if present.
#
AC_CHECK_HEADER(sys/event.h, [],
[PKG_CHECK_MODULES(KQUEUE, libkqueue)]
)
AC_CHECK_FUNCS([strlcpy getprogname], [],
[PKG_CHECK_MODULES(BSD_OVERLAY, libbsd-overlay,[
AC_DEFINE(HAVE_STRLCPY, 1, [])
AC_DEFINE(HAVE_GETPROGNAME, 1, [])
])], [#include <string.h>]
)
#
# Checks for header files.
#
AC_HEADER_STDC
AC_CHECK_HEADERS([TargetConditionals.h pthread_np.h malloc/malloc.h libkern/OSCrossEndian.h libkern/OSAtomic.h sys/guarded.h fcntl.h])
# hack for pthread/private headers
AS_IF([test -n "$apple_libpthread_source_path" -a -n "$apple_xnu_source_osfmk_path"], [
saveCPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I."
ln -fsh "$apple_libpthread_source_path"/private/tsd_private.h pthread_machdep.h
ln -fsh "$apple_libpthread_source_path"/private pthread
ln -fsh "$apple_xnu_source_osfmk_path" System
mkdir -p mach && ln -fsh "$apple_xnu_source_osfmk_path"/mach/coalition.h mach
])
AC_CHECK_HEADERS([pthread_machdep.h pthread/qos.h])
# pthread_workqueues.
# Look for own version first, then system version.
AS_IF([test -f $srcdir/libpwq/configure.ac],
[AC_DEFINE(BUILD_OWN_PTHREAD_WORKQUEUES, 1, [Define if building pthread work queues from source])
ac_configure_args="--disable-libpwq-install $ac_configure_args"
AC_CONFIG_SUBDIRS([libpwq])
build_own_pthread_workqueues=true
AC_DEFINE(HAVE_PTHREAD_WORKQUEUES, 1, [Define if pthread work queues are present])
have_pthread_workqueues=true],
[build_own_pthread_workqueues=false
AC_CHECK_HEADERS([pthread/workqueue_private.h pthread_workqueue.h],
[AC_DEFINE(HAVE_PTHREAD_WORKQUEUES, 1, [Define if pthread work queues are present])
have_pthread_workqueues=true],
[have_pthread_workqueues=false]
)]
)
AM_CONDITIONAL(BUILD_OWN_PTHREAD_WORKQUEUES, $build_own_pthread_workqueues)
AM_CONDITIONAL(HAVE_PTHREAD_WORKQUEUES, $have_pthread_workqueues)
AC_CHECK_HEADERS([libproc_internal.h], [], [], [#include <mach/mach.h>])
AC_CHECK_FUNCS([pthread_workqueue_setdispatch_np _pthread_workqueue_init])
AS_IF([test -n "$apple_libpthread_source_path" -a -n "$apple_xnu_source_osfmk_path"], [
rm -f pthread_machdep.h pthread System mach/coalition.h
CPPFLAGS="$saveCPPFLAGS"
AC_CONFIG_COMMANDS([src/pthread_machdep.h],
[ln -fsh "$apple_libpthread_source_path"/private/tsd_private.h src/pthread_machdep.h],
[apple_libpthread_source_path="$apple_libpthread_source_path"])
AC_CONFIG_COMMANDS([src/pthread],
[ln -fsh "$apple_libpthread_source_path"/private src/pthread],
[apple_libpthread_source_path="$apple_libpthread_source_path"])
AC_CONFIG_COMMANDS([src/System],
[ln -fsh "$apple_xnu_source_osfmk_path" src/System],
[apple_xnu_source_osfmk_path="$apple_xnu_source_osfmk_path"])
AC_CONFIG_COMMANDS([src/mach/coalition.h],
[ln -fsh "$apple_xnu_source_osfmk_path"/mach/coalition.h src/mach],
[apple_xnu_source_osfmk_path="$apple_xnu_source_osfmk_path"])
])
# hack for xnu/bsd/sys/event.h EVFILT_SOCK declaration
AS_IF([test -n "$apple_xnu_source_bsd_path"], [
CPPFLAGS="$CPPFLAGS -DPRIVATE=1"
])
#
# Check for CoreFoundation, Foundation and objc
#
AC_CHECK_HEADER([CoreFoundation/CoreFoundation.h],
[have_corefoundation=true], [have_corefoundation=false]
)
AM_CONDITIONAL(HAVE_COREFOUNDATION, $have_corefoundation)
AC_LANG_PUSH([Objective C])
AC_CHECK_HEADER([Foundation/Foundation.h],
[have_foundation=true], [have_foundation=false]
)
AM_CONDITIONAL(HAVE_FOUNDATION, $have_foundation)
# hack for objc4/runtime/objc-internal.h
AS_IF([test -n "$apple_objc4_source_runtime_path"], [
saveCPPFLAGS="$CPPFLAGS"
CPPFLAGS="$CPPFLAGS -I."
ln -fsh "$apple_objc4_source_runtime_path" objc
])
AC_CHECK_HEADER([objc/objc-internal.h], [
AC_DEFINE(HAVE_OBJC, 1, [Define if you have the Objective-C runtime])
have_objc=true], [have_objc=false],
[#include <objc/runtime.h>]
)
AS_IF([test -n "$apple_objc4_source_runtime_path"], [
rm -f objc
CPPFLAGS="$saveCPPFLAGS"
AC_CONFIG_COMMANDS([src/objc],
[ln -fsh "$apple_objc4_source_runtime_path" src/objc],
[apple_objc4_source_runtime_path="$apple_objc4_source_runtime_path"])
])
AM_CONDITIONAL(USE_OBJC, $have_objc)
AC_LANG_POP([Objective C])
#
# We use the availability of mach.h to decide whether to compile in all sorts
# of Machisms, including using Mach ports as event sources, etc.
#
AC_CHECK_HEADER([mach/mach.h], [
AC_DEFINE(HAVE_MACH, 1, [Define if mach is present])
AC_DEFINE(__DARWIN_NON_CANCELABLE, 1, [Define if using Darwin $NOCANCEL])
have_mach=true], [have_mach=false]
)
AM_CONDITIONAL(USE_MIG, $have_mach)
AC_CHECK_FUNCS([mach_port_construct])
#
# Find functions and declarations we care about.
#
AC_CHECK_DECLS([CLOCK_UPTIME, CLOCK_MONOTONIC], [], [],
[[#include <time.h>]])
AC_CHECK_DECLS([NOTE_NONE, NOTE_REAP, NOTE_REVOKE, NOTE_SIGNAL, NOTE_LOWAT], [], [],
[[#include <sys/event.h>]])
AC_CHECK_DECLS([FD_COPY], [], [], [[#include <sys/select.h>]])
AC_CHECK_DECLS([SIGEMT], [], [], [[#include <signal.h>]])
AC_CHECK_DECLS([VQ_UPDATE, VQ_VERYLOWDISK, VQ_QUOTA], [], [], [[#include <sys/mount.h>]])
AC_CHECK_DECLS([program_invocation_short_name], [], [], [[#include <errno.h>]])
AC_CHECK_FUNCS([pthread_key_init_np pthread_main_np mach_absolute_time malloc_create_zone sysconf])
AC_CHECK_DECLS([POSIX_SPAWN_START_SUSPENDED],
[have_posix_spawn_start_suspended=true], [have_posix_spawn_start_suspended=false],
[[#include <sys/spawn.h>]]
)
AM_CONDITIONAL(HAVE_POSIX_SPAWN_START_SUSPENDED, $have_posix_spawn_start_suspended)
AC_CHECK_FUNC([sem_init],
[have_sem_init=true], [have_sem_init=false]
)
#
# We support both Mach semaphores and POSIX semaphores; if the former are
# available, prefer them.
#
AC_MSG_CHECKING([what semaphore type to use]);
AS_IF([test "x$have_mach" = "xtrue"],
[AC_DEFINE(USE_MACH_SEM, 1, [Define to use Mach semaphores])
AC_MSG_RESULT([Mach semaphores])],
[test "x$have_sem_init" = "xtrue"],
[AC_DEFINE(USE_POSIX_SEM, 1, [Define to use POSIX semaphores])
AC_MSG_RESULT([POSIX semaphores])],
[AC_MSG_ERROR([no supported semaphore type])]
)
AC_CHECK_HEADERS([sys/cdefs.h], [], [],
[#ifdef HAVE_SYS_CDEFS_H
#include <sys/cdefs.h>
#endif])
DISPATCH_C_BLOCKS
AC_CACHE_CHECK([for -fvisibility=hidden], [dispatch_cv_cc_visibility_hidden], [
saveCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fvisibility=hidden"
AC_LINK_IFELSE([AC_LANG_PROGRAM([
extern __attribute__ ((visibility ("default"))) int foo; int foo;], [foo = 0;])],
[dispatch_cv_cc_visibility_hidden="yes"], [dispatch_cv_cc_visibility_hidden="no"])
CFLAGS="$saveCFLAGS"
])
AS_IF([test "x$dispatch_cv_cc_visibility_hidden" != "xno"], [
VISIBILITY_FLAGS="-fvisibility=hidden"
])
AC_SUBST([VISIBILITY_FLAGS])
AC_CACHE_CHECK([for -momit-leaf-frame-pointer], [dispatch_cv_cc_omit_leaf_fp], [
saveCFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -momit-leaf-frame-pointer"
AC_LINK_IFELSE([AC_LANG_PROGRAM([
extern int foo(void); int foo(void) {return 1;}], [foo();])],
[dispatch_cv_cc_omit_leaf_fp="yes"], [dispatch_cv_cc_omit_leaf_fp="no"])
CFLAGS="$saveCFLAGS"
])
AS_IF([test "x$dispatch_cv_cc_omit_leaf_fp" != "xno"], [
OMIT_LEAF_FP_FLAGS="-momit-leaf-frame-pointer"
])
AC_SUBST([OMIT_LEAF_FP_FLAGS])
AS_IF([test "x$have_mach" = "xtrue"], [
AC_CACHE_CHECK([for darwin linker], [dispatch_cv_ld_darwin], [
saveLDFLAGS="$LDFLAGS"
LDFLAGS="$LDFLAGS -dynamiclib -compatibility_version 1.2.3 -current_version 4.5.6 -dead_strip"
AC_LINK_IFELSE([AC_LANG_PROGRAM([
extern int foo; int foo;], [foo = 0;])],
[dispatch_cv_ld_darwin="yes"], [dispatch_cv_ld_darwin="no"])
LDFLAGS="$saveLDFLAGS"
])
])
AM_CONDITIONAL(HAVE_DARWIN_LD, [test "x$dispatch_cv_ld_darwin" == "xyes"])
#
# Temporary: some versions of clang do not mark __builtin_trap() as
# __attribute__((__noreturn__)). Detect and add if required.
#
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([void __attribute__((__noreturn__)) temp(void) { __builtin_trap(); }], [])],
[AC_DEFINE(HAVE_NORETURN_BUILTIN_TRAP, 1, [Define if __builtin_trap marked noreturn])]
)
#
# Generate Makefiles.
#
AC_CONFIG_FILES([Makefile dispatch/Makefile man/Makefile os/Makefile private/Makefile src/Makefile tests/Makefile])
#
# Generate testsuite links
#
AC_CONFIG_LINKS([tests/dispatch:$top_srcdir/private tests/leaks-wrapper:tests/leaks-wrapper.sh])
AC_OUTPUT