Artifact 96cf13738355899c66a4fc6b7f752f46539a7b2df01e49bb1dcfaa90b69d1563:
- File
configure.ac
— part of check-in
[20a020da0e]
at
2012-12-11 12:22:15
on branch trunk
— configure: Only add -no-integrated-as for Clang.
gcc accepts the flag, but issues a warning each time it is used. (user: js, size: 19155) [annotate] [blame] [check-ins using]
AC_INIT(ObjFW, 0.8-dev, js@webkeks.org) AC_CONFIG_SRCDIR(src) AS_IF([test x"$host" = x"psp"], [ OBJCFLAGS="-G0 $OBJCFLAGS" LIBS="$LIBS -lpspdebug -lpspdisplay -lpspge -lpspctrl -lpspsdk -lc" LIBS="$LIBS -lpspnet -lpspnet_inet -lpspnet_apctl -lpspnet_resolver" LIBS="$LIBS -lpsputility -lpspuser -lpspkernel" ]) AC_CANONICAL_HOST AC_LANG([Objective C]) AC_PROG_OBJC([clang gcc]) AC_PROG_OBJCPP AC_PROG_LN_S AC_PROG_INSTALL AC_PROG_EGREP CPP="$OBJCPP" CPPFLAGS="$CPPFLAGS $OBJCPPFLAGS" OBJCFLAGS="$OBJCFLAGS -Wall -fexceptions -fobjc-exceptions -funwind-tables" OBJCFLAGS="$OBJCFLAGS -fconstant-string-class=OFConstantString" AX_CHECK_COMPILER_FLAGS(-std=gnu99, [OBJCFLAGS="$OBJCFLAGS -std=gnu99"]) case $OBJC in *clang*) ;; *) AX_CHECK_COMPILER_FLAGS([-fgnu89-inline -Werror], [OBJCFLAGS="$OBJCFLAGS -fgnu89-inline"]) ;; esac AX_CHECK_COMPILER_FLAGS(-pipe, [OBJCFLAGS="$OBJCFLAGS -pipe"]) AX_CHECK_COMPILER_FLAGS(-fno-common, [OBJCFLAGS="$OBJCFLAGS -fno-common"]) AX_CHECK_COMPILER_FLAGS(-fno-constant-cfstrings, [ OBJCFLAGS="$OBJCFLAGS -fno-constant-cfstrings" AC_SUBST(NO_CONST_CFSTRINGS, "-fno-constant-cfstrings") ]) AX_CHECK_COMPILER_FLAGS(-Wshorten-64-to-32, [OBJCFLAGS="$OBJCFLAGS -Wshorten-64-to-32"]) AX_CHECK_COMPILER_FLAGS(-Wsemicolon-before-method-body, [OBJCFLAGS="$OBJCFLAGS -Wsemicolon-before-method-body"]) AX_CHECK_COMPILER_FLAGS(-Wno-objc-root-class, [OBJCFLAGS="$OBJCFLAGS -Wno-objc-root-class"]) case "$OBJC" in *clang*) ASFLAGS="$ASFLAGS -no-integrated-as" ;; esac AC_MSG_CHECKING(whether Objective C compiler supports properties) AC_TRY_COMPILE([ @interface Foo { id bar; } @property (retain, nonatomic) id bar; @end ], [ Foo *foo = (id)0; [foo setBar: (id)0]; [foo bar]; ], [ AC_SUBST(PROPERTIESTESTS_M, "PropertiesTests.m") AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(whether Objective C compiler supports blocks) old_OBJCFLAGS="$OBJCFLAGS" OBJCFLAGS="$OBJCFLAGS -fblocks" AC_TRY_COMPILE([], [ int (^foo)(int bar); foo = ^ (int bar) { return 0; } ], [ AC_SUBST(BLOCKS_FLAGS, "-fblocks") AC_SUBST(OFBLOCKTESTS_M, "OFBlockTests.m") AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) OBJCFLAGS="$old_OBJCFLAGS" ]) AC_CHECK_TOOL(AR, ar) AC_PROG_RANLIB AC_ARG_ENABLE(shared, AS_HELP_STRING([--disable-shared], [do not build shared library])) AS_IF([test x"$enable_shared" != x"no"], [ BUILDSYS_SHARED_LIB AC_SUBST(OBJFW_SHARED_LIB, "${LIB_PREFIX}objfw${LIB_SUFFIX}") AC_SUBST(EXCEPTIONS_LIB_A, "exceptions.lib.a") AC_SUBST(EXCEPTIONS_EXCEPTIONS_LIB_A, "exceptions/exceptions.lib.a") ]) AC_ARG_ENABLE(static, AS_HELP_STRING([--enable-static], [build static library])) AS_IF([test x"$enable_static" = x"yes" -o x"$enable_shared" = x"no"], [ AC_SUBST(OBJFW_STATIC_LIB, "libobjfw.a") AC_SUBST(EXCEPTIONS_A, "exceptions.a") AC_SUBST(EXCEPTIONS_EXCEPTIONS_A, "exceptions/exceptions.a") ]) AC_DEFINE_UNQUOTED(PLUGIN_SUFFIX, "$PLUGIN_SUFFIX", [Suffix for plugins]) AS_IF([test x"$PLUGIN_SUFFIX" != x""], [ AC_SUBST(OFPLUGIN_M, "OFPlugin.m") AC_SUBST(OFPLUGINTESTS_M, "OFPluginTests.m") AC_SUBST(TESTPLUGIN, "plugin") AC_DEFINE(OF_PLUGINS, 1, [Whether we have plugin support]) AC_SUBST(OFPLUGINS_DEF, "-DOF_PLUGINS") ]) objc_runtime="ObjFW runtime" AC_CHECK_HEADER(objc/objc.h) AC_MSG_CHECKING(which Objective C runtime to use) AC_ARG_ENABLE(runtime, AS_HELP_STRING([--enable-runtime], [use the included runtime])) AC_ARG_ENABLE(seluid16, AS_HELP_STRING([--enable-seluid16], [use only 16 bit for selectors UIDs])) AS_IF([test x"$enable_runtime" != x"yes"], [ AS_IF([test x"$ac_cv_header_objc_objc_h" = x"yes"], [ dnl TODO: This is ugly. Let's think of a better check. AC_EGREP_CPP(yes, [ #import <objc/objc.h> #ifdef __objc_INCLUDE_GNU yes #endif ], [ dnl We don't want the GNU runtime true ], [ objc_runtime="Apple runtime" ]) ]) ]) AC_MSG_RESULT($objc_runtime) case $objc_runtime in "ObjFW runtime") AC_DEFINE(OF_OBJFW_RUNTIME, 1, [Whether we use the ObjFW runtime]) AC_MSG_CHECKING([whether -fobjc-runtime=objfw is supported]) old_OBJCFLAGS="$OBJCFLAGS" OBJCFLAGS="$OBJCFLAGS -fobjc-runtime=objfw" AC_TRY_LINK([ @interface Test + (void)test; @end @implementation Test + (void)test { } @end void* objc_msg_lookup(void *obj, void *sel) { return (void*)0; } void __objc_exec_class(void *module) { } ], [ [Test test]; ], [ RUNTIME_FLAGS="-fobjc-runtime=objfw" AC_MSG_RESULT(yes) ], [ RUNTIME_FLAGS="-fgnu-runtime" OBJCFLAGS="$old_OBJCFLAGS -fgnu-runtime" AC_MSG_RESULT(no) old_compiler="yes" AX_CHECK_COMPILER_FLAGS(-fno-objc-nonfragile-abi, [ flag="-fno-objc-nonfragile-abi" OBJCFLAGS="$OBJCFLAGS $flag" RUNTIME_FLAGS="$RUNTIME_FLAGS $flag" ]) ]) AC_SUBST(RUNTIME, "runtime") AC_SUBST(RUNTIME_FLAGS) if test x"$enable_shared" != x"no"; then AC_SUBST(RUNTIME_LIB_A, "runtime.lib.a") AC_SUBST(RUNTIME_RUNTIME_LIB_A, "runtime/runtime.lib.a") fi if test x"$enable_static" = x"yes" \ -o x"$enable_shared" = x"no"; then AC_SUBST(RUNTIME_A, "runtime.a") AC_SUBST(RUNTIME_RUNTIME_A, "runtime/runtime.a") fi AC_EGREP_CPP(yes, [ #if defined(__amd64__) || defined(__x86_64__) # ifdef __ELF__ yes # endif #endif ], [ AC_SUBST(LOOKUP_S, lookup-amd64-elf.S) AC_DEFINE(OF_ASM_LOOKUP, 1, [Whether to use assembly for lookup]) ], [ AC_EGREP_CPP(yes, [ #if defined(__i386__) && defined(__ELF__) yes #endif ], [ AC_SUBST(LOOKUP_S, lookup-x86-elf.S) AC_DEFINE(OF_ASM_LOOKUP, 1, [Whether to use assembly for lookup]) ]) ]) AC_EGREP_CPP(yes, [ #if defined(__amd64__) || defined(__x86_64__) # ifdef __MACH__ yes # endif #endif ], [ AC_SUBST(LOOKUP_S, lookup-amd64-macho.S) AC_DEFINE(OF_ASM_LOOKUP, 1, [Whether to use assembly for lookup]) ]) AC_EGREP_CPP(yes, [ #if defined(__ppc__) || defined(__PPC__) # ifdef __ELF__ yes # endif #endif ], [ AC_SUBST(LOOKUP_S, lookup-ppc-elf.S) AC_DEFINE(OF_ASM_LOOKUP, 1, [Whether to use assembly for lookup]) ]) AC_EGREP_CPP(yes, [ #if defined(__arm__) || defined(__ARM__) # ifdef __ELF__ yes # endif #endif ], [ AC_SUBST(LOOKUP_S, lookup-arm-elf.S) AC_DEFINE(OF_ASM_LOOKUP, 1, [Whether to use assembly for lookup]) ]) AS_IF([test x"$enable_seluid16" = x"yes"], [ AC_DEFINE(OF_SELUID16, 1, [Whether to use 16 bit selector UIDs]) ]) AX_CHECK_COMPILER_FLAGS(-Wno-deprecated-objc-isa-usage, [OBJCFLAGS="$OBJCFLAGS -Wno-deprecated-objc-isa-usage"]) ;; "Apple runtime") AC_DEFINE(OF_APPLE_RUNTIME, 1, [Whether we use the Apple ObjC runtime]) AC_CHECK_LIB(objc, objc_msgSend, [ LIBS="-lobjc $LIBS" ], [ AC_MSG_ERROR([libobjc not found!]) ]) AC_SUBST(APPLE_FORWARDING_S, "apple-forwarding.S") ;; esac AC_CHECK_FUNC(objc_constructInstance, [], [ AC_SUBST(INSTANCE_M, "instance.m") ]) AC_CHECK_FUNC(objc_autoreleasePoolPush, [], [ AC_SUBST(AUTORELEASE_M, "autorelease.m") ]) AC_CHECK_FUNC(objc_enumerationMutation, [ AC_DEFINE(HAVE_OBJC_ENUMERATIONMUTATION, 1, [Whether we have objc_enumerationMutation]) ]) case "$host_os" in darwin*) AC_SUBST(LDFLAGS_REEXPORT, ["-Wl,-reexport-lobjfw"]) AS_IF([test x"$objc_runtime" = x"Apple runtime"], [ AC_SUBST(REEXPORT_LIBOBJC, ["-Wl,-reexport-lobjc"]) ]) ;; esac AC_C_BIGENDIAN([ AC_DEFINE(OF_BIG_ENDIAN, 1, [Whether we are big endian]) ]) AC_MSG_CHECKING(for SIZE_MAX) AC_EGREP_CPP(yes, [ #include <stdint.h> #include <limits.h> #ifdef SIZE_MAX yes #endif ], [ AC_MSG_RESULT(yes) ], [ AC_MSG_RESULT(no) AC_MSG_CHECKING(for SIZE_T_MAX) AC_EGREP_CPP(yes, [ #include <stdint.h> #include <limits.h> #ifdef SIZE_T_MAX yes #endif ], [ AC_MSG_RESULT(yes) size_max="SIZE_T_MAX" ], [ AC_MSG_RESULT(no) size_max="(~(size_t)0)" ]) AC_DEFINE_UNQUOTED(SIZE_MAX, $size_max, [Maximum value for size_t]) ]) AC_CHECK_SIZEOF(float) AC_CHECK_SIZEOF(double) AS_IF([test x"$ac_cv_sizeof_float" != x"4" -o x"$ac_cv_sizeof_double" != x"8"], [AC_MSG_ERROR( [Floating point implementation does not conform to IEEE 754!])]) AC_MSG_CHECKING(for floating point endianess) fp_endianess="unknown" AC_TRY_COMPILE([ double endianess = 2.993700760838795055656993580068609688772747263874402942272934826871811872228512759832626847251963763755836687759498519784550143745834860002945223766052808125982053455555265216112722718870586961456110693379343178124592311441022662940307099598578775368547768968914916965731708568179631324904813506101190853720749196062963892799499230635163056742330563321122389331703618066046034494287335316842529021563862331183541255013987734473643350285400060357711238514186776429325214739886098119655678483017894951556639821088508565036657794343031121375178126860889964700274558728491825977274341798997758923017217660272136611938897932105874133412726223468780517578125e-259; ], [ ], [ AS_IF([$EGREP BigEnd conftest.$ac_objext >/dev/null], [ AC_DEFINE(OF_FLOAT_BIG_ENDIAN, 1, [Whether floats are big endian]) fp_endianess="big endian" ], [ AS_IF([$EGREP dnEgiB conftest.$ac_objext >/dev/null], [ fp_endianess="little endian" ]) ]) ]) AC_MSG_RESULT($fp_endianess) AS_IF([test x"$fp_endianess" = x"unknown"], [ AC_MSG_ERROR( [Floating point implementation does not conform to IEEE 754!])]) AC_CHECK_LIB(m, fmod, LIBS="$LIBS -lm") AC_CHECK_FUNC(asprintf, [ case "$host" in *-psp-*) dnl asprintf is broken on the PSP, but snprintf works. have_asprintf="no" AC_SUBST(ASPRINTF_M, "asprintf.m") ac_cv_snprintf_useful_ret="yes" ;; *) have_asprintf="yes" AC_DEFINE(OF_HAVE_ASPRINTF, 1, [Whether we have asprintf]) AC_SUBST(ASPRINTF_DEF, "-DOF_HAVE_ASPRINTF") ;; esac ], [ have_asprintf="no" AC_SUBST(ASPRINTF_M, "asprintf.m") AC_MSG_CHECKING(whether snprintf returns something useful) AC_CACHE_VAL(ac_cv_snprintf_useful_ret, [ AC_TRY_RUN([ #include <stdio.h> int main() { return (snprintf(NULL, 0, "asd") == 3 ? 0 : 1); } ], [ ac_cv_snprintf_useful_ret="yes" ], [ ac_cv_snprintf_useful_ret="no" ], [ ac_cv_snprintf_useful_ret="no" ]) ]) AC_MSG_RESULT($ac_cv_snprintf_useful_ret) ]) test x"$have_asprintf" != x"yes" -a x"$ac_cv_snprintf_useful_ret" != x"yes" && \ AC_MSG_ERROR(No asprintf and no snprintf returning required space!) AC_CHECK_FUNC(arc4random, [ AC_DEFINE(OF_HAVE_ARC4RANDOM, 1, [Whether we have arc4random()]) ], [ AC_CHECK_FUNC(random, [ AC_DEFINE(OF_HAVE_RANDOM, 1, [Whether we have random()]) ]) ]) AC_CHECK_LIB(dl, dlopen, LIBS="$LIBS -ldl") AC_ARG_ENABLE(threads, AS_HELP_STRING([--disable-threads], [disable thread support])) AS_IF([test x"$enable_threads" != x"no"], [ case "$host_os" in mingw*) AC_MSG_CHECKING(for threads) AC_MSG_RESULT(WinAPI) ;; *) ACX_PTHREAD([ CPPLAGS="$CPPFLAGS $PTHREAD_CFLAGS" LIBS="$LIBS $PTHREAD_LIBS" AC_DEFINE(OF_HAVE_PTHREADS, 1, [Whether we have pthreads]) AC_TRY_COMPILE([ #include <pthread.h> ], [ pthread_mutexattr_t attr; pthread_mutexattr_settype(&attr, PTHREAD_MUTEX_RECURSIVE); ], [ AC_DEFINE(OF_HAVE_RECURSIVE_PTHREAD_MUTEXES, 1, [If pthread mutexes can be recursive]) ]) AC_CHECK_FUNC(pthread_spin_lock, [ AC_DEFINE(OF_HAVE_PTHREAD_SPINLOCKS, 1, [Whether we have pthread spinlocks]) ]) AC_CHECK_FUNC(sched_yield, [ AC_DEFINE(OF_HAVE_SCHED_YIELD, 1, [Whether we have sched_yield]) ]) ], [ AC_MSG_ERROR(No supported threads found!) ]) ;; esac AC_DEFINE(OF_THREADS, 1, [Whether we have threads]) AC_SUBST(THREADING_SOURCES, " \ OFThread.m \ OFThreadPool.m \ OFTLSKey.m \ OFMutex.m \ OFRecursiveMutex.m \ OFCondition.m \ ") AC_SUBST(OFTHREADTESTS_M, "OFThreadTests.m") AC_SUBST(OFHTTPCLIENTTESTS_M, "OFHTTPClientTests.m") AC_SUBST(THREADING_H, "threading.h") AC_MSG_CHECKING(whether __thread works) AC_TRY_LINK([ /* It seems __thread is buggy with GCC 4.1 */ #if __GNUC__ == 4 && __GNUC_MINOR__ < 2 # error buggy #endif __thread int x = 0; ], [ x++; ], [ AC_MSG_RESULT(yes) AC_DEFINE(OF_COMPILER_TLS, 1, [Whether __thread works]) ], [ AC_MSG_RESULT(no) ]) atomic_ops="none" AC_MSG_CHECKING(whether we have an atomic ops assembly implementation) AC_EGREP_CPP(yes, [ #if defined(__GNUC__) && (defined(__i386__) || \ defined(__amd64__) || defined(__x86_64__)) yes #endif ], [ AC_MSG_RESULT(yes) atomic_ops="assembly implementation" ], [ AC_MSG_RESULT(no) ]) AC_MSG_CHECKING(whether __sync_* works) AC_TRY_LINK([#include <stdint.h>], [ int32_t i, j; if (__sync_add_and_fetch(&i, 1)) j = __sync_sub_and_fetch(&i, 1); while (!__sync_bool_compare_and_swap(&i, 0, 1)); ], [ AC_MSG_RESULT(yes) test x"$atomic_ops" = x"none" && atomic_ops="gcc builtins" AC_DEFINE(OF_HAVE_GCC_ATOMIC_OPS, 1, [Whether gcc atomic operations are available]) ], [ AC_MSG_RESULT(no) ]) AC_CHECK_HEADER(libkern/OSAtomic.h, [ test x"$atomic_ops" = x"none" && atomic_ops="libkern/OSAtomic.h" AC_DEFINE(OF_HAVE_OSATOMIC, 1, [Whether we have libkern/OSAtomic.h]) AC_CHECK_FUNC(OSAtomicAdd64Barrier, [ AC_DEFINE(OF_HAVE_OSATOMIC_64, 1, [Whether we have OSAtomic*64]) ]) ]) ], [ dnl We can only have one thread - therefore everything is atomic atomic_ops="not needed" ]) AC_MSG_CHECKING(for atomic operations) AS_IF([test x"$atomic_ops" != x"none"], [ AC_DEFINE(OF_ATOMIC_OPS, 1, [Whether we have atomic operations]) AC_SUBST(ATOMIC_H, "atomic.h") ]) AC_MSG_RESULT($atomic_ops) AC_CHECK_LIB(socket, socket, LIBS="$LIBS -lsocket") AC_CHECK_LIB(network, socket, LIBS="$LIBS -lnetwork") AC_CHECK_LIB(ws2_32, main, LIBS="$LIBS -lws2_32") AC_CHECK_FUNC(gmtime_r, [ AC_DEFINE(HAVE_GMTIME_R, 1, [Whether we have gmtime_r]) ]) AC_CHECK_FUNC(localtime_r, [ AC_DEFINE(HAVE_LOCALTIME_R, 1, [Whether we have localtime_r]) ]) AC_CHECK_FUNC(kqueue, [ AC_DEFINE(HAVE_KQUEUE, 1, [Whether we have kqueue]) AC_SUBST(OFSTREAMOBSERVER_KQUEUE_M, "OFStreamObserver_kqueue.m") ]) AC_CHECK_HEADER(poll.h, [ AC_DEFINE(HAVE_POLL_H, 1, [Whether we have poll.h]) AC_SUBST(OFSTREAMOBSERVER_POLL_M, "OFStreamObserver_poll.m") ]) AC_CHECK_HEADERS(sys/select.h, [ AC_DEFINE(OF_HAVE_SYS_SELECT_H, 1, [Whether we have sys/select.h]) AC_SUBST(OFSTREAMOBSERVER_SELECT_M, "OFStreamObserver_select.m") ]) case "$host_os" in mingw*) AC_SUBST(OFSTREAMOBSERVER_SELECT_M, "OFStreamObserver_select.m") ;; esac AC_MSG_CHECKING(for getaddrinfo) AC_TRY_COMPILE([ #include <stddef.h> #ifndef _WIN32 # include <sys/types.h> # include <sys/socket.h> # include <netdb.h> #else # define _WIN32_WINNT 0x0501 # include <windows.h> # include <ws2tcpip.h> #endif ], [ struct addrinfo ai; getaddrinfo(NULL, NULL, NULL, NULL); ], [ AC_MSG_RESULT(yes) AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether we have getaddrinfo]) AS_IF([test x"$enable_threads" != x"no"], [ AC_MSG_CHECKING(whether getaddrinfo is thread-safe) case "$host_os" in darwin[[12345]].*) have_threadsafe_getaddrinfo="no" ;; darwin*) have_threadsafe_getaddrinfo="yes" ;; freebsd[[1234]].* | freebsd5.[[1234]]*) have_threadsafe_getaddrinfo="no" ;; freebsd*) have_threadsafe_getaddrinfo="yes" ;; netbsd[[123]].*) have_threadsafe_getaddrinfo="no" ;; netbsd*) have_threadsafe_getaddrinfo="yes" ;; solaris*) have_threadsafe_getaddrinfo="yes" ;; *) have_threadsafe_getaddrinfo="unknown" ;; esac AS_IF([test x"$have_threadsafe_getaddrinfo" = x"unknown"], [ AC_EGREP_CPP(yes, [ #ifndef _WIN32 # include <sys/types.h> # include <sys/socket.h> # include <netdb.h> #else # define _WIN32_WINNT 0x0501 # include <windows.h> # include <ws2tcpip.h> #endif #ifdef h_errno yes #end ], [ have_threadsafe_getaddrinfo="yes" ], [ have_threadsafe_getaddrinfo="no" ]) ]) AS_IF([test x"$have_threadsafe_getaddrinfo" = x"yes"], [ AC_DEFINE(HAVE_THREADSAFE_GETADDRINFO, 1, [Whether getaddrinfo is thread-safe]) ]) AC_MSG_RESULT($have_threadsafe_getaddrinfo) ]) ], [ AC_MSG_RESULT(no) ]) AS_IF([test x"$objc_runtime" = x"Apple runtime"], [ AC_CHECK_HEADER(Foundation/NSObject.h, [ AC_SUBST(FOUNDATION_COMPAT_M, "foundation-compat.m") AC_SUBST(BRIDGE, "bridge") AS_IF([test x"$enable_shared" != x"no"], [ AC_SUBST(OBJFW_BRIDGE_SHARED_LIB, "${LIB_PREFIX}objfw-bridge${LIB_SUFFIX}") ]) AS_IF([test x"$enable_static" = x"yes" \ -o x"$enable_shared" = x"no"], [ AC_SUBST(OBJFW_BRIDGE_STATIC_LIB, "libobjfw-bridge.a") ]) ]) ]) AS_IF([test x"$GOBJC" = x"yes"], [ OBJCFLAGS="$OBJCFLAGS -Wwrite-strings -Wpointer-arith -Werror" AC_MSG_CHECKING(whether gcc has bug objc/27438) AC_TRY_COMPILE([ @interface OFConstantString { struct objc_class *isa; const char *string; unsigned long size; } @end void *_OFConstantStringClassReference; ], [ OFConstantString *test = @""; (void)test; /* Get rid of unused variable warning */ ], [ AC_MSG_RESULT(no) ], [ AC_MSG_RESULT([yes, adding -Wno-unused-variable]) OBJCFLAGS="$OBJCFLAGS -Wno-unused-variable" AC_SUBST(NO_WARN_UNUSED, "-Wno-unused-variable") ]) AC_MSG_CHECKING(whether we need -Wno-strict-aliasing due to gcc bugs) AC_TRY_COMPILE([ @interface Foo { struct objc_class *isa; } @end static struct { struct objc_class *isa; } object; ], [ Foo *test = (Foo*)&object; (void)test; /* Get rid of unused variable warning */ ], [ AC_MSG_RESULT(no) ], [ AC_MSG_RESULT(yes) OBJCFLAGS="$OBJCFLAGS -Wno-strict-aliasing" ]) old_OBJCFLAGS="$OBJCFLAGS" OBJCFLAGS="$OBJCFLAGS -Wcast-align" AC_MSG_CHECKING(whether -Wcast-align is buggy) AC_TRY_COMPILE([ @interface Foo { struct objc_class *isa; } @end @implementation Foo - (void)foo { struct objc_class *c = isa; (void)c; } @end ], [ ], [ AC_MSG_RESULT(no) ], [ AC_MSG_RESULT(yes) OBJCFLAGS="$old_OBJCFLAGS" ]) ]) AS_IF([test x"$cross_compiling" = x"yes"], [ AC_SUBST(BIN_PREFIX, "$host-") case "$host" in *-*-mingw*) AC_CHECK_PROG(WINE, wine, wine) AS_IF([test x"$WINE" != x""], [ AC_SUBST(TESTS, "tests") AC_SUBST(TEST_LAUNCHER, "$WINE") ]) ;; esac ], [ AC_SUBST(TESTS, "tests") ]) BUILDSYS_INIT BUILDSYS_TOUCH_DEPS dnl We don't call AC_PROG_CPP, but only AC_PROG_OBJCPP and set CPP to OBJCPP dnl and add OBJCPPFLAGS to CPPFLAGS, thus we need to AC_SUBST these ourself. AC_SUBST(CPP) AC_SUBST(CPPFLAGS) dnl We use the OBJC compiler as our assembler AC_SUBST(AS, $OBJC) AC_SUBST(ASFLAGS) AC_SUBST(AS_DEPENDS, $OBJC_DEPENDS) AC_CONFIG_FILES([ buildsys.mk extra.mk Info.plist utils/objfw-config src/bridge/Info.plist ]) AC_CONFIG_HEADERS([config.h src/objfw-defs.h]) AC_OUTPUT AS_IF([test x"$old_compiler" = x"yes"], [ echo printf " ** Note: Your compiler does not seem to " echo "accept -fobjc-runtime=objfw." printf " ** To get optimal performance and be able to use all " echo "features, you should " echo " ** install Clang >= 3.2." echo ])