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root/cebix/SheepShaver/src/Unix/configure.in

Comparing SheepShaver/src/Unix/configure.in (file contents):
Revision 1.5 by gbeauche, 2003-05-22T22:12:04Z vs.
Revision 1.21 by gbeauche, 2004-02-24T10:21:21Z

#	Line 5 | Line 5 | AC_INIT(main_unix.cpp)
5		AC_PREREQ(2.12)
6		AC_CONFIG_HEADER(config.h)
7
8	+	dnl Canonical system information.
9	+	AC_CANONICAL_HOST
10	+	AC_CANONICAL_TARGET
11	+
12		dnl Options.
13	+	AC_ARG_ENABLE(jit,          [  --enable-jit            enable JIT compiler [default=yes]], [WANT_JIT=$enableval], [WANT_JIT=yes])
14	+	AC_ARG_ENABLE(ppc-emulator, [  --enable-ppc-emulator   use the selected PowerPC emulator [default=auto]], [WANT_EMULATED_PPC=$enableval], [WANT_EMULATED_PPC=auto])
15		AC_ARG_ENABLE(xf86-dga,     [  --enable-xf86-dga       use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
16		AC_ARG_ENABLE(xf86-vidmode, [  --enable-xf86-vidmode   use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
17		AC_ARG_ENABLE(vosf,         [  --enable-vosf           enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
18		AC_ARG_WITH(esd,            [  --with-esd              support ESD for sound under Linux/FreeBSD [default=yes]], [WANT_ESD=$withval], [WANT_ESD=yes])
19		AC_ARG_WITH(gtk,            [  --with-gtk              use GTK user interface [default=yes]], [WANT_GTK=$withval], [WANT_GTK=yes])
20		AC_ARG_WITH(mon,            [  --with-mon              use mon as debugger [default=yes]], [WANT_MON=$withval], [WANT_MON=yes])
21	+	AC_ARG_WITH(dgcc,           [  --with-dgcc=COMPILER    use C++ COMPILER to compile synthetic opcodes], [DYNGEN_CC=$withval])
22
23		dnl Checks for programs.
24		AC_PROG_CC
#	Line 28 | Line 35 | AC_EGREP_CPP(yes,
35		#ifdef __powerpc__
36		yes
37		#endif
38	+	#ifdef __ppc__
39	+	yes
40	+	#endif
41		], [AC_MSG_RESULT(yes); HAVE_PPC=yes], AC_MSG_RESULT(no))
42
43	+	dnl We use native CPU if possible.
44	+	EMULATED_PPC=yes
45	+	case $WANT_EMULATED_PPC in
46	+	auto) [[ "x$HAVE_PPC" = "xyes" ]] && EMULATED_PPC=no;;
47	+	no)   EMULATED_PPC=no;;
48	+	esac
49	+	if [[ "x$EMULATED_PPC" = "xyes" ]]; then
50	+	AC_DEFINE(EMULATED_PPC)
51	+	fi
52	+
53		dnl We use mon if possible.
54		MONSRCS=
55	+	case "x$WANT_MON" in
56	+	x/* | x.*)
57	+	mon_srcdir=$WANT_MON
58	+	WANT_MON=yes
59	+	;;
60	+	xyes)
61	+	mon_srcdir=../../../mon/src
62	+	;;
63	+	esac
64		if [[ "x$WANT_MON" = "xyes" ]]; then
65		AC_MSG_CHECKING(for mon)
37	–	mon_srcdir=../../../mon/src
66		if grep mon_init $mon_srcdir/mon.h >/dev/null 2>/dev/null; then
67		AC_MSG_RESULT(yes)
68		AC_DEFINE(ENABLE_MON)
#	Line 69 | Line 97 | LIBS="$LIBS $X_PRE_LIBS $X_LIBS -lX11 -l
97
98		dnl We need pthreads on non-PowerPC systems. Try libpthread first, then libc_r (FreeBSD), then PTL.
99		HAVE_PTHREADS=yes
100	<	if [[ "x$HAVE_PPC" = "xno" ]]; then
100	>	case $EMULATED_PPC:$target_os in
101	>	no:linux*)
102	>	dnl We do have our own pthread_cancel() implementation
103	>	AC_DEFINE(HAVE_PTHREAD_CANCEL, 1, [Define if you have the pthread_cancel function.])
104	>	;;
105	>	*:*)
106		AC_CHECK_LIB(pthread, pthread_create, , [
107		AC_CHECK_LIB(c_r, pthread_create, , [
108		AC_CHECK_LIB(PTL, pthread_create, , [
#	Line 78 | Line 111 | if [[ "x$HAVE_PPC" = "xno" ]]; then
111		])
112		])
113		AC_CHECK_FUNCS(pthread_cancel)
114	<	fi
115	<
116	<	dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
117	<	SEMSRC=
118	<	AC_CHECK_FUNCS(sem_init, , [
114	>	AC_CHECK_FUNCS(pthread_mutexattr_setprotocol)
115	>	AC_CHECK_FUNCS(pthread_mutexattr_settype)
116	>	AC_CHECK_FUNCS(pthread_mutexattr_setpshared)
117	>	if [[ "x$HAVE_PTHREADS" = "xyes" ]]; then
118	>	AC_DEFINE(HAVE_PTHREADS, 1, [Define if pthreads are available.])
119	>	fi
120	>	dnl If POSIX.4 semaphores are not available, we emulate them with pthread mutexes.
121	>	SEMSRC=
122	>	AC_CHECK_FUNCS(sem_init, , [
123		if test "x$HAVE_PTHREADS" = "xyes"; then
124		SEMSRC=posix_sem.cpp
125		fi
126	<	])
126	>	])
127	>	;;
128	>	esac
129
130		dnl We use XFree86 DGA if possible.
131		if [[ "x$WANT_XF86_DGA" = "xyes" ]]; then
#	Line 111 | Line 150 | if [[ "x$WANT_XF86_VIDMODE" = "xyes" ]];
150		fi
151
152		dnl We use GTK+ if possible.
153	<	UISRCS=
153	>	UISRCS=../dummy/prefs_editor_dummy.cpp
154		if [[ "x$WANT_GTK" = "xyes" ]]; then
155		AM_PATH_GTK(1.2.0, [
156		AC_DEFINE(ENABLE_GTK)
#	Line 141 | Line 180 | fi
180		dnl Checks for header files.
181		AC_HEADER_STDC
182		AC_HEADER_SYS_WAIT
183	<	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/mman.h)
183	>	AC_CHECK_HEADERS(mach/vm_map.h mach/mach_init.h sys/mman.h)
184	>	AC_CHECK_HEADERS(sys/time.h sys/times.h)
185	>	AC_CHECK_HEADERS(unistd.h fcntl.h byteswap.h)
186
187		dnl Checks for typedefs, structures, and compiler characteristics.
188		AC_C_BIGENDIAN
#	Line 161 | Line 202 | AC_TYPE_SIGNAL
202		AC_HEADER_TIME
203		AC_STRUCT_TM
204
205	+	dnl Check whether struct sigaction has sa_restorer member.
206	+	AC_CACHE_CHECK([whether struct sigaction has sa_restorer],
207	+	ac_cv_signal_sa_restorer, [
208	+	AC_TRY_COMPILE([
209	+	#include <signal.h>
210	+	], [struct sigaction sa; sa.sa_restorer = 0;],
211	+	ac_cv_signal_sa_restorer=yes, ac_cv_signal_sa_restorer=no,
212	+	dnl When cross-compiling, do not assume anything.
213	+	ac_cv_signal_sa_restorer=no
214	+	)
215	+	])
216	+	if [[ "x$ac_cv_signal_sa_restorer" = "xyes" ]]; then
217	+	AC_DEFINE(HAVE_SIGNAL_SA_RESTORER)
218	+	fi
219	+
220		dnl Checks for library functions.
221		AC_CHECK_FUNCS(strdup cfmakeraw)
222	<	AC_CHECK_FUNCS(nanosleep clock_gettime timer_create)
222	>	AC_CHECK_FUNCS(nanosleep)
223		AC_CHECK_FUNCS(sigaction signal)
224		AC_CHECK_FUNCS(mmap mprotect munmap)
225		AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
226
227	+	dnl Darwin seems to define mach_task_self() instead of task_self().
228	+	AC_CHECK_FUNCS(mach_task_self task_self)
229	+
230	+	dnl We need clock_gettime() for better performance but it may drag
231	+	dnl libpthread in, which we don't want for native ppc mode
232	+	case $EMULATED_PPC:$target_os in
233	+	no:linux*)
234	+	;;
235	+	*:*)
236	+	AC_SEARCH_LIBS(clock_gettime, [rt posix4])
237	+	AC_CHECK_FUNCS(clock_gettime)
238	+	;;
239	+	esac
240	+
241		dnl Select system-dependant sources.
242	<	if [[ "x$HAVE_PPC" = "xyes" ]]; then
243	<	SYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
244	<	else
245	<	SYSSRCS="../emul_ppc/emul_ppc.cpp"
246	<	fi
247	<	SYSSRCS="$SYSSRCS $SEMSRCS $UISRCS $MONSRCS"
242	>	SERIALSRC=serial_unix.cpp
243	>	ETHERSRC=../dummy/ether_dummy.cpp
244	>	SCSISRC=../dummy/scsi_dummy.cpp
245	>	AUDIOSRC=../dummy/audio_dummy.cpp
246	>	EXTRASYSSRCS=
247	>	case "$target_os" in
248	>	linux*)
249	>	ETHERSRC=Linux/ether_linux.cpp
250	>	AUDIOSRC=audio_oss_esd.cpp
251	>	SCSISRC=Linux/scsi_linux.cpp
252	>	if [[ "x$EMULATED_PPC" = "xno" ]]; then
253	>	EXTRASYSSRCS="Linux/paranoia.cpp Linux/sheepthreads.c Linux/asm_linux.S"
254	>	fi
255	>	;;
256	>	darwin*)
257	>	if [[ "x$EMULATED_PPC" = "xno" ]]; then
258	>	EXTRASYSSRCS="Darwin/paranoia.cpp Linux/asm_linux.S"
259	>	fi
260	>	;;
261	>	esac
262	>	SYSSRCS="$SERIALSRC $ETHERSRC $SCSISRC $AUDIOSRC $SEMSRC $UISRCS $MONSRCS $EXTRASYSSRCS"
263
264		dnl Define a macro that translates a yesno-variable into a C macro definition
265		dnl to be put into the config.h file
#	Line 333 | Line 418 | AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_
418
419		fi dnl HAVE_MMAP_VM
420
421	<	dnl Check if we can mmap 0x2000 bytes from 0x0000
422	<	AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x2000],
421	>	dnl Check if we can modify the __PAGEZERO segment for use as Low Memory
422	>	AC_CACHE_CHECK([whether __PAGEZERO can be Low Memory area 0x0000-0x3000],
423	>	ac_cv_pagezero_hack, [
424	>	ac_cv_pagezero_hack=no
425	>	if AC_TRY_COMMAND([Darwin/testlmem.sh 0x3000]); then
426	>	ac_cv_pagezero_hack=yes
427	>	dnl might as well skip the test for mmap-able low memory
428	>	ac_cv_can_map_lm=no
429	>	fi
430	>	])
431	>	AC_TRANSLATE_DEFINE(PAGEZERO_HACK, "$ac_cv_pagezero_hack",
432	>	[Define if the __PAGEZERO Mach-O Low Memory Globals hack works on this system.])
433	>
434	>	dnl Check if we can mmap 0x3000 bytes from 0x0000
435	>	AC_CACHE_CHECK([whether we can map Low Memory area 0x0000-0x3000],
436		ac_cv_can_map_lm, [
437		AC_LANG_SAVE
438		AC_LANG_CPLUSPLUS
#	Line 417 | Line 515 | AC_CACHE_CHECK([whether sigaction handle
515		AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall",
516		[Define if your system requires sigactions to be reinstalled.])
517
518	<	dnl Check if extended signals are supported.
519	<	AC_CACHE_CHECK([whether your system supports extended signal handlers],
520	<	ac_cv_have_extended_signals, [
518	>	dnl Check if Mach exceptions supported.
519	>	AC_CACHE_CHECK([whether your system supports Mach exceptions],
520	>	ac_cv_have_mach_exceptions, [
521		AC_LANG_SAVE
522		AC_LANG_CPLUSPLUS
523		AC_TRY_RUN([
524	<	#define HAVE_SIGINFO_T 1
524	>	#define HAVE_MACH_EXCEPTIONS 1
525		#define CONFIGURE_TEST_SIGSEGV_RECOVERY
526		#include "vm_alloc.cpp"
527		#include "sigsegv.cpp"
528	<	], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
528	>	], [
529	>	sigsegv_recovery=mach
530	>	ac_cv_have_mach_exceptions=yes
531	>	],
532	>	ac_cv_have_mach_exceptions=no,
533		dnl When cross-compiling, do not assume anything.
534	<	ac_cv_have_extended_signals=no
534	>	ac_cv_have_mach_exceptions=no
535		)
536		AC_LANG_RESTORE
537		]
538		)
539	<	AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
540	<	[Define if your system support extended signals.])
539	>	AC_TRANSLATE_DEFINE(HAVE_MACH_EXCEPTIONS, "$ac_cv_have_mach_exceptions",
540	>	[Define if your system supports Mach exceptions.])
541	>
542	>	dnl Otherwise, check if extended signals are supported.
543	>	if [[ -z "$sigsegv_recovery" ]]; then
544	>	AC_CACHE_CHECK([whether your system supports extended signal handlers],
545	>	ac_cv_have_extended_signals, [
546	>	AC_LANG_SAVE
547	>	AC_LANG_CPLUSPLUS
548	>	AC_TRY_RUN([
549	>	#define HAVE_SIGINFO_T 1
550	>	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
551	>	#include "vm_alloc.cpp"
552	>	#include "sigsegv.cpp"
553	>	], [
554	>	sigsegv_recovery=siginfo
555	>	ac_cv_have_extended_signals=yes
556	>	],
557	>	ac_cv_have_extended_signals=no,
558	>	dnl When cross-compiling, do not assume anything.
559	>	ac_cv_have_extended_signals=no
560	>	)
561	>	AC_LANG_RESTORE
562	>	]
563	>	)
564	>	AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac_cv_have_extended_signals",
565	>	[Define if your system support extended signals.])
566	>	fi
567
568		dnl Otherwise, check for subterfuges.
569	<	if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
569	>	if [[ -z "$sigsegv_recovery" ]]; then
570		AC_CACHE_CHECK([whether we then have a subterfuge for your system],
571		ac_cv_have_sigcontext_hack, [
572		AC_LANG_SAVE
#	Line 448 | Line 576 | if [[ "x$ac_cv_have_extended_signals" =
576		#define CONFIGURE_TEST_SIGSEGV_RECOVERY
577		#include "vm_alloc.cpp"
578		#include "sigsegv.cpp"
579	<	], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
579	>	], [
580	>	sigsegv_recovery=sigcontext
581	>	ac_cv_have_sigcontext_hack=yes
582	>	],
583	>	ac_cv_have_sigcontext_hack=no,
584		dnl When cross-compiling, do not assume anything.
585		ac_cv_have_sigcontext_hack=no
586		)
#	Line 480 | Line 612 | AC_TRANSLATE_DEFINE(HAVE_SIGSEGV_SKIP_IN
612
613		dnl Can we do Video on SEGV Signals ?
614		CAN_VOSF=no
615	<	if [[ "$ac_cv_have_extended_signals" = "yes" -o "$ac_cv_have_sigcontext_hack" = "yes" ]]; then
615	>	if [[ -n "$sigsegv_recovery" ]]; then
616		CAN_VOSF=yes
617		fi
618
#	Line 491 | Line 623 | else
623		WANT_VOSF=no
624		fi
625
626	+	dnl Platform specific binary postprocessor
627	+	BLESS=/bin/true
628	+	if [[ "x$ac_cv_pagezero_hack" = "xyes" ]]; then
629	+	BLESS=Darwin/lowmem
630	+	LDFLAGS="$LDFLAGS -pagezero_size 0x3000"
631	+	fi
632	+
633	+	dnl Check for GCC 2.7 or higher.
634	+	HAVE_GCC27=no
635	+	AC_MSG_CHECKING(for GCC 2.7 or higher)
636	+	AC_EGREP_CPP(xyes,
637	+	[#if __GNUC__ - 1 > 1 || __GNUC_MINOR__ - 1 > 5
638	+	xyes
639	+	#endif
640	+	], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
641	+
642	+	dnl Check for GCC 3.0 or higher.
643	+	HAVE_GCC30=no
644	+	AC_MSG_CHECKING(for GCC 3.0 or higher)
645	+	AC_EGREP_CPP(xyes,
646	+	[#if __GNUC__ >= 3
647	+	xyes
648	+	#endif
649	+	], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))
650	+
651	+	dnl Check for ICC.
652	+	AC_MSG_CHECKING(for ICC)
653	+	HAVE_ICC=no
654	+	if $CXX -V -v 2>&1 | grep -q "Intel(R) C++ Compiler"; then
655	+	HAVE_ICC=yes
656	+	fi
657	+	AC_MSG_RESULT($HAVE_ICC)
658	+
659	+	# Test if the compiler can generate ELF objects
660	+	AC_CACHE_CHECK([whether the compiler can generate ELF objects],
661	+	ac_cv_elf_objects, [
662	+	echo 'int i;' > conftest.$ac_ext
663	+	ac_cv_elf_objects=no
664	+	if AC_TRY_EVAL(ac_compile); then
665	+	case `/usr/bin/file conftest.$ac_objext` in
666	+	*"ELF"*)
667	+	ac_cv_elf_objects=yes
668	+	;;
669	+	esac
670	+	fi
671	+	rm -rf conftest*
672	+	])
673	+	ELF_OBJECTS=$ac_cv_elf_objects
674	+
675	+	dnl CPU emulator sources
676	+	if [[ "x$EMULATED_PPC" = "xyes" ]]; then
677	+	CPUSRCS="\
678	+	../kpx_cpu/src/cpu/ppc/ppc-cpu.cpp \
679	+	../kpx_cpu/src/cpu/ppc/ppc-decode.cpp \
680	+	../kpx_cpu/src/cpu/ppc/ppc-execute.cpp \
681	+	../kpx_cpu/src/cpu/ppc/ppc-translate.cpp"
682	+	CPPFLAGS="$CPPFLAGS -I../kpx_cpu/include -I../kpx_cpu/src"
683	+
684	+	dnl Enable JIT compiler, if possible
685	+	if [[ "x$WANT_JIT" = "xyes" ]]; then
686	+	AC_CACHE_CHECK([whether dyngen can be used],
687	+	ac_cv_use_dyngen, [
688	+	case $host_cpu:$ELF_OBJECTS in
689	+	powerpc:yes)
690	+	ac_cv_use_dyngen=yes
691	+	;;
692	+	x86_64:yes)
693	+	ac_cv_use_dyngen=yes
694	+	;;
695	+	i?86:yes)
696	+	ac_cv_use_dyngen=yes
697	+	;;
698	+	*:*)
699	+	ac_cv_use_dyngen=no
700	+	;;
701	+	esac
702	+	dnl Check for a suitable synthetic opcodes compiler (icc is faking itself as gcc 3.2.2)
703	+	if [[ -z "$DYNGEN_CC" ]]; then
704	+	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_ICC" = "xno" ]]; then
705	+	DYNGEN_CC=$CXX
706	+	else
707	+	for p in /usr/bin /usr/local/bin; do
708	+	gxx="$p/g++"
709	+	if [[ -x "$gxx" ]]; then
710	+	DYNGEN_CC="$gxx"
711	+	fi
712	+	done
713	+	fi
714	+	fi
715	+	if [[ -z "$DYNGEN_CC" ]] || ! { echo '#include <limits>' | $DYNGEN_CC -xc++ -c -o /dev/null - >& /dev/null; }; then
716	+	ac_cv_use_dyngen=no
717	+	fi
718	+	])
719	+	if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
720	+	case $host_cpu in
721	+	i?86)
722	+	DYNGEN_OP_FLAGS="-fomit-frame-pointer -mpreferred-stack-boundary=2"
723	+	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
724	+	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -falign-functions=0"
725	+	else
726	+	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -malign-functions=0"
727	+	fi
728	+	saved_CPPFLAGS=$CPPFLAGS
729	+	CPPFLAGS="$CPPFLAGS -mmmx"
730	+	AC_CHECK_HEADERS(mmintrin.h,  [DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -mmmx"])
731	+	CPPFLAGS="$CPPFLAGS -msse"
732	+	AC_CHECK_HEADERS(xmmintrin.h, [DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -msse"])
733	+	CPPFLAGS="$CPPFLAGS -msse2"
734	+	AC_CHECK_HEADERS(emmintrin.h, [DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -msse2"])
735	+	CPPFLAGS=$saved_CPPFLAGS
736	+	;;
737	+	x86_64)
738	+	AC_CHECK_HEADERS(mmintrin.h xmmintrin.h emmintrin.h)
739	+	;;
740	+	esac
741	+	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -finline-limit=10000"
742	+	if [[ "x$HAVE_GCC30" = "xyes" ]]; then
743	+	DYNGEN_OP_FLAGS="$DYNGEN_OP_FLAGS -fno-reorder-blocks -fno-optimize-sibling-calls"
744	+	fi
745	+	else
746	+	WANT_JIT=no
747	+	fi
748	+	AC_TRANSLATE_DEFINE(ENABLE_DYNGEN, $ac_cv_use_dyngen, [Define to enable dyngen engine])
749	+	if [[ "x$WANT_JIT" = "xyes" ]]; then
750	+	DYNGENSRCS="\
751	+	../kpx_cpu/src/cpu/jit/dyngen.c \
752	+	../kpx_cpu/src/cpu/jit/cxxdemangle.cpp"
753	+	CPUSRCS="\
754	+	../kpx_cpu/src/cpu/jit/jit-cache.cpp \
755	+	../kpx_cpu/src/cpu/jit/basic-dyngen.cpp \
756	+	../kpx_cpu/src/cpu/ppc/ppc-dyngen.cpp $CPUSRCS"
757	+	fi
758	+	fi
759	+	CPUSRCS="$CPUSRCS ../kpx_cpu/sheepshaver_glue.cpp"
760	+	else
761	+	WANT_JIT=no
762	+	fi
763	+	if [[ "x$ac_cv_use_dyngen" = "xyes" ]]; then
764	+	AC_CACHE_CHECK([whether static data regions are executable],
765	+	ac_cv_have_static_data_exec, [
766	+	AC_TRY_RUN([int main(void) {
767	+	#if defined(__powerpc__)
768	+	static unsigned int p[8] = {0x4e800020,};
769	+	asm volatile("dcbst 0,%0" : : "r" (p) : "memory");
770	+	asm volatile("sync" : : : "memory");
771	+	asm volatile("icbi 0,%0" : : "r" (p) : "memory");
772	+	asm volatile("sync" : : : "memory");
773	+	asm volatile("isync" : : : "memory");
774	+	((void (*)(void))p)();
775	+	return 0;
776	+	#endif
777	+	return 1;
778	+	}], ac_cv_have_static_data_exec=yes, ac_cv_have_static_data_exec=no,
779	+	dnl When cross-compiling, do not assume anything.
780	+	ac_cv_have_static_data_exec=no
781	+	)
782	+	])
783	+	fi
784	+	AC_TRANSLATE_DEFINE(HAVE_STATIC_DATA_EXEC, "$ac_cv_have_static_data_exec",
785	+	[Define if your system marks static data pages as executable.])
786	+
787	+	if [[ "x$WANT_JIT" = "xyes" ]]; then
788	+	CPPFLAGS="$CPPFLAGS -DUSE_JIT"
789	+	fi
790	+
791		dnl Generate Makefile.
792	+	AC_SUBST(DYNGENSRCS)
793	+	AC_SUBST(DYNGEN_CC)
794	+	AC_SUBST(DYNGEN_OP_FLAGS)
795		AC_SUBST(SYSSRCS)
796	+	AC_SUBST(CPUSRCS)
797	+	AC_SUBST(BLESS)
798		AC_OUTPUT(Makefile)
799
800		dnl Print summary.
#	Line 501 | Line 803 | echo SheepShaver configuration summary:
803		echo
804		echo XFree86 DGA support .............. : $WANT_XF86_DGA
805		echo XFree86 VidMode support .......... : $WANT_XF86_VIDMODE
806	+	echo Using PowerPC emulator ........... : $EMULATED_PPC
807	+	echo Enable JIT compiler .............. : $WANT_JIT
808		echo Enable video on SEGV signals ..... : $WANT_VOSF
809		echo ESD sound support ................ : $WANT_ESD
810		echo GTK user interface ............... : $WANT_GTK
811		echo mon debugger support ............. : $WANT_MON
812	+	echo Bad memory access recovery type .. : $sigsegv_recovery
813		echo
814		echo "Configuration done. Now type \"make\"."

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