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

Comparing BasiliskII/src/Unix/configure.in (file contents):
Revision 1.33 by cebix, 2001-02-10T15:29:01Z vs.
Revision 1.48 by cebix, 2001-09-02T13:50:05Z

#	Line 9 | Line 9 | dnl Options.
9		AC_ARG_ENABLE(xf86-dga,      [  --enable-xf86-dga       use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
10		AC_ARG_ENABLE(xf86-vidmode,  [  --enable-xf86-vidmode   use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
11		AC_ARG_ENABLE(fbdev-dga,     [  --enable-fbdev-dga      use direct frame buffer access via /dev/fb [default=yes]], [WANT_FBDEV_DGA=$enableval], [WANT_FBDEV_DGA=yes])
12	<	AC_ARG_ENABLE(vosf,          [  --enable-vosf           enable video on SEGV signals [default=no]], [WANT_VOSF=$enableval], [WANT_VOSF=no])
12	>	AC_ARG_ENABLE(vosf,          [  --enable-vosf           enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
13	>
14	>	dnl FPU emulation core.
15	>	AC_ARG_ENABLE(fpe,
16	>	[  --enable-fpe=which      specify which fpu emulator to use [default=opt]],
17	>	[ case "$enableval" in
18	>	default)    FPE_CORE="default";; dnl fpu_x86.cpp if i386 architecture, fpu_uae.cpp otherwise
19	>	uae)            FPE_CORE="uae";;
20	>	*)                      AC_MSG_ERROR([--enable-fpe takes only one of the following values: default, uae]);;
21	>	esac
22	>	],
23	>	[ FPE_CORE="default"
24	>	])
25
26		dnl Addressing modes.
27		AC_ARG_ENABLE(addressing,
#	Line 40 | Line 52 | case "$target_os" in
52		netbsd*)      OS_TYPE=netbsd;;
53		freebsd*)     OS_TYPE=freebsd;;
54		solaris*)     OS_TYPE=solaris;;
55	<	*)            OS_TYPE=`echo $target_os | sed -e 's/-/_/' | sed -e 's/\./_/'`;;
55	>	darwin*)      OS_TYPE=darwin;;
56	>	*)            OS_TYPE=`echo $target_os | sed -e 's/-/_/g' | sed -e 's/\./_/g'`;;
57		esac
58		DEFINES="$DEFINES -DOS_$OS_TYPE"
59
#	Line 54 | Line 67 | case "$target_cpu" in
67		m68k* ) CPU_TYPE=m68k HAVE_M68K=yes;;
68		sparc* ) CPU_TYPE=sparc HAVE_SPARC=yes;;
69		powerpc* ) CPU_TYPE=powerpc HAVE_POWERPC=yes;;
70	<	*) CPU_TYPE=`echo $target_cpu | sed -e 's/-/_/'`;;
70	>	*) CPU_TYPE=`echo $target_cpu | sed -e 's/-/_/g'`;;
71		esac
72		DEFINES="$DEFINES -DCPU_$CPU_TYPE"
73
#	Line 88 | Line 101 | fi
101
102		dnl Checks for libraries.
103		AC_CHECK_LIB(posix4, sem_init)
104	+	AC_CHECK_LIB(rt, timer_create)
105
106		dnl We need X11.
107		AC_PATH_XTRA
#	Line 179 | Line 193 | fi
193
194		dnl Checks for header files.
195		AC_HEADER_STDC
196	<	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h)
196	>	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/mman.h)
197
198		dnl Checks for typedefs, structures, and compiler characteristics.
199		AC_C_BIGENDIAN
#	Line 192 | Line 206 | AC_CHECK_SIZEOF(long long, 8)
206		AC_CHECK_SIZEOF(void *, 4)
207		AC_TYPE_OFF_T
208		AC_CHECK_TYPE(loff_t, off_t)
209	+	TYPE_SOCKLEN_T
210		AC_TYPE_SIZE_T
211		AC_TYPE_SIGNAL
212		AC_HEADER_TIME
#	Line 200 | Line 215 | AC_STRUCT_TM
215		dnl Checks for library functions.
216		AC_CHECK_FUNCS(strdup cfmakeraw)
217		AC_CHECK_FUNCS(clock_gettime timer_create)
218	+	AC_CHECK_FUNCS(sigaction signal)
219	+	AC_CHECK_FUNCS(mmap mprotect munmap)
220	+	AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
221	+
222	+	dnl Darwin seems to define mach_task_self() instead of task_self().
223	+	AC_CHECK_FUNCS(mach_task_self task_self)
224
225		dnl Select system-dependant source files.
226		SERIALSRC=serial_unix.cpp
#	Line 210 | Line 231 | EXTRASYSSRCS=
231		CAN_NATIVE_M68K=no
232		case "$target_os" in
233		linux*)
234	<	ETHERSRC=Linux/ether_linux.cpp
214	<	SCSISRC=Linux/scsi_linux.cpp
234	>	ETHERSRC=ether_unix.cpp
235		AUDIOSRC=audio_oss_esd.cpp
236	+	SCSISRC=Linux/scsi_linux.cpp
237		;;
238	<	freebsd*3.*)
238	>	freebsd*)
239	>	ETHERSRC=ether_unix.cpp
240		AUDIOSRC=audio_oss_esd.cpp
241		DEFINES="$DEFINES -DBSD_COMP"
242	+	CXXFLAGS="$CXXFLAGS -fpermissive"
243		dnl Check for the CAM library
244		AC_CHECK_LIB(cam, cam_open_btl, HAVE_LIBCAM=yes, HAVE_LIBCAM=no)
245		if [[ "x$HAVE_LIBCAM" = "xno" ]]; then
246		AC_MSG_WARN([Cannot find libcam for SCSI management, disabling SCSI support.])
247		else
248		dnl Check for the sys kernel includes
249	<	AC_CHECK_HEADER(/sys/cam/cam.h)
250	<	if [[ "x$ac_cv_header__sys_cam_cam_h" = "xno" ]]; then
249	>	AC_CHECK_HEADER(camlib.h)
250	>	if [[ "x$ac_cv_header_camlib_h" = "xno" ]]; then
251		dnl In this case I should fix this thing including a "patch"
252		dnl to access directly to the functions in the kernel :) --Orlando
253	<	AC_MSG_WARN([Cannot find kernel includes for CAM library, disabling SCSI support.])
253	>	AC_MSG_WARN([Cannot find includes for CAM library, disabling SCSI support.])
254		else
255		SCSISRC=FreeBSD/scsi_freebsd.cpp
233	–	CXXFLAGS="$CXXFLAGS -I/sys"
234	–	CFLAGS="$CFLAGS -I/sys"
256		LIBS="$LIBS -lcam"
257		DEFINES="$DEFINES -DCAM"
258		fi
259		fi
260		;;
240	–	freebsd*)
241	–	DEFINES="$DEFINES -DBSD_COMP"
242	–	dnl Check for the SCSI library
243	–	AC_CHECK_LIB(scsi, scsi_open, HAVE_LIBSCSI=yes, HAVE_LIBSCSI=no)
244	–	if [[ "x$HAVE_LIBSCSI" = "xno" ]]; then
245	–	AC_MSG_WARN([Cannot find libscsi for SCSI management, disabling SCSI support.])
246	–	else
247	–	dnl Check for the sys kernel includes
248	–	AC_CHECK_HEADER(scsi.h sys/scsiio.h)
249	–	if [[ "x$ac_cv_header_scsi_h" = "xno" ]]; then
250	–	AC_MSG_WARN([Cannot find includes for the SCSI library, disabling SCSI support.])
251	–	else
252	–	SCSISRC=FreeBSD/scsi_freebsd.cpp
253	–	LIBS="$LIBS -lscsi"
254	–	fi
255	–	fi
256	–	;;
261		netbsd*)
262		CAN_NATIVE_M68K=yes
263		;;
#	Line 262 | Line 266 | solaris*)
266		DEFINES="$DEFINES -DBSD_COMP -D_POSIX_PTHREAD_SEMANTICS"
267		;;
268		irix*)
269	+	ETHERSRC=ether_unix.cpp
270		AUDIOSRC=Irix/audio_irix.cpp
271		EXTRASYSSRCS=Irix/unaligned.c
272		dnl IRIX headers work fine, but somehow don't define or use "STDC_HEADERS"
273		DEFINES="$DEFINES -DCRTSCTS=CNEW_RTSCTS -DB230400=B115200 -DSTDC_HEADERS"
274		LIBS="$LIBS -laudio"
275	+	WANT_ESD=no
276	+
277	+	dnl Check if our compiler supports -Ofast (MIPSPro)
278	+	HAVE_OFAST=no
279	+	ocflags="$CFLAGS"
280	+	CFLAGS=`echo $CFLAGS | sed -e 's/ -g / -Ofast /;s/^-g /-Ofast /;s/-g$/ -Ofast/;s/^-g$/-Ofast/'`
281	+	AC_MSG_CHECKING(if "-Ofast" works)
282	+	dnl Do a test compile of an empty function
283	+	AC_TRY_COMPILE(,, [AC_MSG_RESULT(yes); HAVE_OFAST=yes], AC_MSG_RESULT(no))
284	+	CFLAGS="$ocflags"
285	+
286		;;
287		esac
288
#	Line 291 | Line 307 | dnl to be put into the config.h file
307		dnl $1 -- the macro to define
308		dnl $2 -- the value to translate
309		AC_DEFUN(AC_TRANSLATE_DEFINE, [
310	<	if [[ "x$2" = "xyes" ]]; then
310	>	if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
311		AC_DEFINE($1)
312		fi
313		])
314
315	+	dnl Various checks if the system supports vm_allocate() and the like functions.
316	+	have_mach_vm=no
317	+	if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
318	+	"x$ac_cv_func_vm_protect" = "xyes" ]]; then
319	+	have_mach_vm=yes
320	+	fi
321	+	AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm")
322	+
323	+	dnl Check that vm_allocate(), vm_protect() work
324	+	if [[ "x$have_mach_vm" = "xyes" ]]; then
325	+
326	+	AC_CACHE_CHECK("whether vm_protect works",
327	+	ac_cv_vm_protect_works, [
328	+	AC_LANG_SAVE
329	+	AC_LANG_CPLUSPLUS
330	+	ac_cv_vm_protect_works=yes
331	+	dnl First the tests that should segfault
332	+	for test_def in NONE_READ NONE_WRITE READ_WRITE; do
333	+	AC_TRY_RUN([
334	+	#define CONFIGURE_TEST_VM_MAP
335	+	#define TEST_VM_PROT_$test_def
336	+	#include "vm_alloc.cpp"
337	+	], ac_cv_vm_protect_works=no, rm -f core,
338	+	dnl When cross-compiling, do not assume anything
339	+	ac_cv_vm_protect_works="guessing no"
340	+	)
341	+	done
342	+	AC_TRY_RUN([
343	+	#define CONFIGURE_TEST_VM_MAP
344	+	#define TEST_VM_PROT_RDWR_WRITE
345	+	#include "vm_alloc.cpp"
346	+	], , ac_cv_vm_protect_works=no,
347	+	dnl When cross-compiling, do not assume anything
348	+	ac_cv_vm_protect_works="guessing no"
349	+	)
350	+	AC_LANG_RESTORE
351	+	]
352	+	)
353	+
354	+	dnl Remove support for vm_allocate() if vm_protect() does not work
355	+	if [[ "x$have_mach_vm" = "xyes" ]]; then
356	+	case $ac_cv_vm_protect_works in
357	+	*yes) have_mach_vm=yes;;
358	+	*no) have_mach_vm=no;;
359	+	esac
360	+	fi
361	+	AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm")
362	+
363	+	fi dnl HAVE_MACH_VM
364	+
365	+	dnl Various checks if the system supports mmap() and the like functions.
366	+	dnl ... and Mach memory allocators are not supported
367	+	have_mmap_vm=no
368	+	if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
369	+	"x$ac_cv_func_mprotect" = "xyes" ]]; then
370	+	if [[ "x$have_mach_vm" = "xno" ]]; then
371	+	have_mmap_vm=yes
372	+	fi
373	+	fi
374	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm")
375	+
376	+	dnl Check that mmap() and associated functions work.
377	+	if [[ "x$have_mmap_vm" = "xyes" ]]; then
378	+
379	+	dnl Check if we have a working anonymous mmap()
380	+	AC_CACHE_CHECK("whether mmap supports MAP_ANON",
381	+	ac_cv_mmap_anon, [
382	+	AC_LANG_SAVE
383	+	AC_LANG_CPLUSPLUS
384	+	AC_TRY_RUN([
385	+	#define HAVE_MMAP_ANON
386	+	#define CONFIGURE_TEST_VM_MAP
387	+	#define TEST_VM_MMAP_ANON
388	+	#include "vm_alloc.cpp"
389	+	], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
390	+	dnl When cross-compiling, do not assume anything.
391	+	ac_cv_mmap_anon="guessing no"
392	+	)
393	+	AC_LANG_RESTORE
394	+	]
395	+	)
396	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon")
397	+
398	+	AC_CACHE_CHECK("whether mmap supports MAP_ANONYMOUS",
399	+	ac_cv_mmap_anonymous, [
400	+	AC_LANG_SAVE
401	+	AC_LANG_CPLUSPLUS
402	+	AC_TRY_RUN([
403	+	#define HAVE_MMAP_ANONYMOUS
404	+	#define CONFIGURE_TEST_VM_MAP
405	+	#define TEST_VM_MMAP_ANON
406	+	#include "vm_alloc.cpp"
407	+	], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
408	+	dnl When cross-compiling, do not assume anything.
409	+	ac_cv_mmap_anonymous="guessing no"
410	+	)
411	+	AC_LANG_RESTORE
412	+	]
413	+	)
414	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous")
415	+
416	+	AC_CACHE_CHECK("whether mprotect works",
417	+	ac_cv_mprotect_works, [
418	+	AC_LANG_SAVE
419	+	AC_LANG_CPLUSPLUS
420	+	ac_cv_mprotect_works=yes
421	+	dnl First the tests that should segfault
422	+	for test_def in NONE_READ NONE_WRITE READ_WRITE; do
423	+	AC_TRY_RUN([
424	+	#define CONFIGURE_TEST_VM_MAP
425	+	#define TEST_VM_PROT_$test_def
426	+	#include "vm_alloc.cpp"
427	+	], ac_cv_mprotect_works=no, rm -f core,
428	+	dnl When cross-compiling, do not assume anything
429	+	ac_cv_mprotect_works="guessing no"
430	+	)
431	+	done
432	+	AC_TRY_RUN([
433	+	#define CONFIGURE_TEST_VM_MAP
434	+	#define TEST_VM_PROT_RDWR_WRITE
435	+	#include "vm_alloc.cpp"
436	+	], , ac_cv_mprotect_works=no,
437	+	dnl When cross-compiling, do not assume anything
438	+	ac_cv_mprotect_works="guessing no"
439	+	)
440	+	AC_LANG_RESTORE
441	+	]
442	+	)
443	+
444	+	dnl Remove support for mmap() if mprotect() does not work
445	+	if [[ "x$have_mmap_vm" = "xyes" ]]; then
446	+	case $ac_cv_mprotect_works in
447	+	*yes) have_mmap_vm=yes;;
448	+	*no) have_mmap_vm=no;;
449	+	esac
450	+	fi
451	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm)
452	+
453	+	fi dnl HAVE_MMAP_VM
454	+
455		dnl Check if we can mmap 0x2000 bytes from 0x0000
456		AC_CACHE_CHECK("whether we can map Low Memory area 0x0000-0x2000",
457		ac_cv_can_map_lm, [
458		AC_LANG_SAVE
459		AC_LANG_CPLUSPLUS
460		AC_TRY_RUN([
461	<	#include <unistd.h>
462	<	#include <fcntl.h>
463	<	#include <sys/mman.h>
464	<
465	<	int main()
466	<	{ int zero_fd; char * lm;
467	<	if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
468	<	if ((lm = (char *)mmap((caddr_t)0x0000, 0x2000, PROT_READ | PROT_WRITE, MAP_FIXED | MAP_PRIVATE, zero_fd, 0)) == MAP_FAILED) exit(1);
313	<	lm[0] = 0x12;
314	<	munmap(lm, 0x2000);
315	<	close(zero_fd);
316	<	exit(0);
461	>	#include "vm_alloc.cpp"
462	>	int main(void) { /* returns 0 if we could map the lowmem globals */
463	>	volatile char * lm;
464	>	if (vm_init() < 0) exit(1);
465	>	if ((lm = (volatile char *)vm_acquire_fixed(0, 0x2000)) == VM_MAP_FAILED) exit(1);
466	>	lm[0] = 'z';
467	>	if (vm_release((char *)lm, 0x2000) < 0) exit(1);
468	>	vm_exit(); exit(0);
469		}
470	<	],
471	<	[ac_cv_can_map_lm=yes],
472	<	[ac_cv_can_map_lm=no]
470	>	], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
471	>	dnl When cross-compiling, do not assume anything.
472	>	ac_cv_can_map_lm="guessing no"
473		)
474		AC_LANG_RESTORE
475		]
476		)
477
478	<	dnl Check if extended signals are supported.
479	<	AC_CACHE_CHECK("whether your system supports extended signal handlers",
480	<	ac_cv_have_extended_signals, [
478	>	dnl Check signal handlers need to be reinstalled
479	>	AC_CACHE_CHECK("whether signal handlers need to be reinstalled",
480	>	ac_cv_signal_need_reinstall, [
481		AC_LANG_SAVE
482		AC_LANG_CPLUSPLUS
483		AC_TRY_RUN([
332	–	#include <unistd.h>
484		#include <stdlib.h>
485	+	#ifdef HAVE_UNISTD_H
486	+	#include <unistd.h>
487	+	#endif
488		#include <signal.h>
489	<	#include <fcntl.h>
490	<	#include <sys/mman.h>
491	<
492	<	static volatile caddr_t mem = 0;
493	<	static int zero_fd = -1;
489	>	static int handled_signal = 0;
490	>	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
491	>	int main(void) { /* returns 0 if signals need not to be reinstalled */
492	>	signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
493	>	exit(handled_signal == 2);
494	>	}
495	>	], ac_cv_signal_need_reinstall=yes, ac_cv_signal_need_reinstall=no,
496	>	dnl When cross-compiling, do not assume anything.
497	>	ac_cv_signal_need_reinstall="guessing yes"
498	>	)
499	>	AC_LANG_RESTORE
500	>	]
501	>	)
502	>	AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall")
503
504	<	static RETSIGTYPE segfault_handler(int, siginfo_t * sip, void *)
505	<	{ if ((caddr_t)(sip->si_addr) != mem) exit(1);
506	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
507	<
508	<	int main()
509	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
510	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
511	<	struct sigaction sa; sa.sa_sigaction = segfault_handler; sa.sa_flags = SA_SIGINFO;
512	<	sigaction(SIGSEGV, &sa, 0);
513	<	mem[0] = 0;
514	<	exit(1); // should not be reached
504	>	dnl Check if sigaction handlers need to be reinstalled
505	>	AC_CACHE_CHECK("whether sigaction handlers need to be reinstalled",
506	>	ac_cv_sigaction_need_reinstall, [
507	>	AC_LANG_SAVE
508	>	AC_LANG_CPLUSPLUS
509	>	AC_TRY_RUN([
510	>	#include <stdlib.h>
511	>	#ifdef HAVE_UNISTD_H
512	>	#include <unistd.h>
513	>	#endif
514	>	#include <signal.h>
515	>	static int handled_signal = 0;
516	>	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
517	>	typedef RETSIGTYPE (*signal_handler)(int);
518	>	static signal_handler mysignal(int sig, signal_handler handler) {
519	>	struct sigaction old_sa;
520	>	struct sigaction new_sa;
521	>	new_sa.sa_handler = handler;
522	>	return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
523	>	}
524	>	int main(void) { /* returns 0 if signals need not to be reinstalled */
525	>	mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
526	>	exit(handled_signal == 2);
527		}
528	<	],
529	<	[ac_cv_have_extended_signals=yes],
530	<	[ac_cv_have_extended_signals=no]
528	>	], ac_cv_sigaction_need_reinstall=yes, ac_cv_sigaction_need_reinstall=no,
529	>	dnl When cross-compiling, do not assume anything.
530	>	ac_cv_sigaction_need_reinstall="guessing yes"
531	>	)
532	>	AC_LANG_RESTORE
533	>	]
534	>	)
535	>	AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall")
536	>
537	>	dnl Check if extended signals are supported.
538	>	AC_CACHE_CHECK("whether your system supports extended signal handlers",
539	>	ac_cv_have_extended_signals, [
540	>	AC_LANG_SAVE
541	>	AC_LANG_CPLUSPLUS
542	>	AC_TRY_RUN([
543	>	#define HAVE_SIGINFO_T 1
544	>	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
545	>	#include "vm_alloc.cpp"
546	>	#include "sigsegv.cpp"
547	>	], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
548	>	dnl When cross-compiling, do not assume anything.
549	>	ac_cv_have_extended_signals=no
550		)
551		AC_LANG_RESTORE
552		]
#	Line 361 | Line 555 | AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac
555
556		dnl Otherwise, check for subterfuges.
557		if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
558	<	case "$target_os" in
559	<	linux*)
560	<	if [[ "x$HAVE_I386" = "xyes" ]]; then
561	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
562	<	ac_cv_have_sigcontext_hack, [
563	<	AC_LANG_SAVE
564	<	AC_LANG_CPLUSPLUS
565	<	AC_TRY_RUN([
566	<	#include <unistd.h>
567	<	#include <signal.h>
568	<	#include <fcntl.h>
569	<	#include <sys/mman.h>
570	<
571	<	static volatile caddr_t mem = 0;
572	<	static int zero_fd = -1;
573	<
380	<	static RETSIGTYPE segfault_handler(int, struct sigcontext scs)
381	<	{ if ((caddr_t)(scs.cr2) != mem) exit(1);
382	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
383	<
384	<	int main()
385	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
386	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
387	<	struct sigaction sa; sa.sa_flags = 0;
388	<	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
389	<	sigaction(SIGSEGV, &sa, 0);
390	<	mem[0] = 0;
391	<	exit(1); // should not be reached
392	<	}
393	<	],
394	<	[ac_cv_have_sigcontext_hack=yes],
395	<	[ac_cv_have_sigcontext_hack=no]
396	<	)
397	<	AC_LANG_RESTORE
398	<	])
399	<	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
400	<	elif [[ "x$HAVE_POWERPC" = "xyes" ]]; then
401	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
402	<	ac_cv_have_sigcontext_hack, [
403	<	AC_LANG_SAVE
404	<	AC_LANG_CPLUSPLUS
405	<	AC_TRY_RUN([
406	<	#include <unistd.h>
407	<	#include <signal.h>
408	<	#include <fcntl.h>
409	<	#include <sys/mman.h>
410	<
411	<	static volatile caddr_t mem = 0;
412	<	static int zero_fd = -1;
413	<
414	<	static RETSIGTYPE segfault_handler(int, struct sigcontext_struct *scs)
415	<	{ if ((caddr_t)(scs->regs->dar) != mem) exit(1);
416	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
417	<
418	<	int main()
419	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
420	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
421	<	struct sigaction sa; sa.sa_flags = 0;
422	<	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
423	<	sigaction(SIGSEGV, &sa, 0);
424	<	mem[0] = 0;
425	<	exit(1); // should not be reached
426	<	}
427	<	],
428	<	[ac_cv_have_sigcontext_hack=yes],
429	<	[ac_cv_have_sigcontext_hack=no]
430	<	)
431	<	AC_LANG_RESTORE
432	<	])
433	<	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
434	<	fi
435	<	;;
436	<	netbsd*)
437	<	if [[ "x$HAVE_M68K" = "xyes" ]]; then
438	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
439	<	ac_cv_have_sigcontext_hack, [
440	<	AC_LANG_SAVE
441	<	AC_LANG_CPLUSPLUS
442	<	AC_TRY_RUN([
443	<	#include <unistd.h>
444	<	#include <signal.h>
445	<	#include <fcntl.h>
446	<	#include <sys/mman.h>
447	<
448	<	static volatile caddr_t mem = 0;
449	<	static int zero_fd = -1;
450	<
451	<	static RETSIGTYPE segfault_handler(int, int code)
452	<	{ if ((caddr_t)code != mem) exit(1);
453	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
454	<
455	<	int main()
456	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
457	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
458	<	struct sigaction sa; sa.sa_flags = 0;
459	<	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
460	<	sigaction(SIGSEGV, &sa, 0);
461	<	mem[0] = 0;
462	<	exit(1); // should not be reached
463	<	}
464	<	],
465	<	[ac_cv_have_sigcontext_hack=yes],
466	<	[ac_cv_have_sigcontext_hack=no]
467	<	)
468	<	AC_LANG_RESTORE
469	<	])
470	<	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
471	<	fi
472	<	;;
473	<	esac
558	>	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
559	>	ac_cv_have_sigcontext_hack, [
560	>	AC_LANG_SAVE
561	>	AC_LANG_CPLUSPLUS
562	>	AC_TRY_RUN([
563	>	#define HAVE_SIGCONTEXT_SUBTERFUGE 1
564	>	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
565	>	#include "vm_alloc.cpp"
566	>	#include "sigsegv.cpp"
567	>	], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
568	>	dnl When cross-compiling, do not assume anything.
569	>	ac_cv_have_sigcontext_hack=no
570	>	)
571	>	AC_LANG_RESTORE
572	>	])
573	>	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack")
574		fi
575
576		dnl Can we do Video on SEGV Signals ?
#	Line 553 | Line 653 | AC_EGREP_CPP(yes,
653		#endif
654		], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
655
656	+	dnl Check for GCC 3.0 or higher.
657	+	HAVE_GCC30=no
658	+	AC_MSG_CHECKING(for GCC 3.0 or higher)
659	+	AC_EGREP_CPP(yes,
660	+	[#if __GNUC__ >= 3
661	+	yes
662	+	#endif
663	+	], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))
664	+
665		dnl Set "-fomit-frame-pointer" on i386 GCC 2.7 or higher.
666		if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
667		CFLAGS="$CFLAGS -fomit-frame-pointer"
668		CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
669		fi
670
671	+	dnl (gb) Do not merge constants since it breaks fpu/fpu_x86.cpp.
672	+	dnl As of 2001/08/02, this affects the following compilers:
673	+	dnl Official: probably gcc-3.1 (mainline CVS)
674	+	dnl Mandrake: gcc-2.96 >= 0.59mdk, gcc-3.0.1 >= 0.1mdk
675	+	dnl Red Hat : gcc-2.96 >= 89, gcc-3.0 >= 1
676	+	if [[ "x$HAVE_GCC27" = "xyes" ]]; then
677	+	SAVED_CXXFLAGS="$CXXFLAGS"
678	+	CXXFLAGS="$CXXFLAGS -fno-merge-constants"
679	+	AC_CACHE_CHECK([whether GCC supports constants merging], ac_cv_gcc_constants_merging, [
680	+	AC_LANG_SAVE
681	+	AC_LANG_CPLUSPLUS
682	+	AC_TRY_COMPILE([],[],[ac_cv_gcc_constants_merging=yes],[ac_cv_gcc_constants_merging=no])
683	+	AC_LANG_RESTORE
684	+	])
685	+	if [[ "x$ac_cv_gcc_constants_merging" != "xyes" ]]; then
686	+	CXXFLAGS="$SAVED_CXXFLAGS"
687	+	fi
688	+	fi
689	+
690		dnl Select appropriate CPU source and REGPARAM define.
691		ASM_OPTIMIZATIONS=none
692		CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
693	<	FPUSRCS="../uae_cpu/fpp.cpp"
694	<	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
693	>	FPUSRCS="../uae_cpu/fpu/fpu_uae.cpp"
694	>	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" -a "x$OS_TYPE" != "xfreebsd" ]]; then
695		dnl i386 CPU
696		DEFINES="$DEFINES -DREGPARAM=\"__attribute__((regparm(3)))\""
697		if [[ "x$HAVE_GAS" = "xyes" ]]; then
698		ASM_OPTIMIZATIONS=i386
699		DEFINES="$DEFINES -DX86_ASSEMBLY -DUNALIGNED_PROFITABLE -DOPTIMIZED_FLAGS"
700	<	CPUSRCS="../uae_cpu/compiler.cpp cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
700	>	CPUSRCS="cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
701		FPUSRCS="../uae_cpu/fpu_x86.cpp"
702		fi
703		elif [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_SPARC" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
#	Line 601 | Line 729 | elif [[ "x$WANT_NATIVE_M68K" = "xyes" ]]
729		CPUSRCS="asm_support.s"
730		fi
731
732	+	dnl Select appropriate FPU source.
733	+	dnl 1. Optimized X86 assembly core if target is i386 architecture
734	+	SAVED_DEFINES=$DEFINES
735	+	if [[ "x$FPE_CORE" = "xdefault" ]]; then
736	+	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
737	+	DEFINES="$DEFINES -DFPU_X86"
738	+	FPE_CORE_STR="i386 optimized core"
739	+	FPUSRCS="../uae_cpu/fpu/fpu_x86.cpp"
740	+	FPE_CORE="i386"
741	+	else
742	+	FPE_CORE="uae"
743	+	fi
744	+	fi
745	+
746	+	dnl 2. JIT-FPU only supports IEEE-based implementation.
747	+	if [[ "x$WANT_JIT_FPU" = "xyes" -a "x$FPE_CORE" != "xieee" ]]; then
748	+	AC_MSG_WARN([Sorry, JIT-FPU supports only the "ieee" FPE implementation])
749	+	FPE_CORE="ieee"
750	+	dnl Restore previous variables. FPE_CORE_STR and FPUSRCS are overwritten
751	+	DEFINES=$SAVED_DEFINES
752	+	fi
753	+
754	+	dnl 3. Choose either IEEE-based implementation or the old UAE core
755	+	if [[ "x$FPE_CORE" = "xieee" ]]; then
756	+	AC_CHECK_HEADERS(fenv.h)
757	+	AC_CHECK_FUNCS(feclearexcept fegetexceptflag feraiseexcept fesetexceptflag fetestexcept)
758	+	AC_CHECK_FUNCS(fegetround fesetround)
759	+	DEFINES="$DEFINES -DFPU_IEEE"
760	+	FPE_CORE_STR="ieee-based fpu core"
761	+	FPUSRCS="../uae_cpu/fpu/fpu_ieee.cpp"
762	+	elif [[ "x$FPE_CORE" = "xuae" ]]; then
763	+	DEFINES="$DEFINES -DFPU_UAE"
764	+	FPE_CORE_STR="original uae core"
765	+	FPUSRCS="../uae_cpu/fpu/fpu_uae.cpp"
766	+	fi
767	+
768	+	dnl Check for certain math functions
769	+	AC_CHECK_FUNCS(atanh)
770	+	AC_CHECK_FUNCS(isnan isinf)             dnl C99
771	+	AC_CHECK_FUNCS(isnanl isinfl)   dnl IEEE ?
772	+
773		dnl UAE CPU sources for all non-m68k-native architectures.
774		if [[ "x$WANT_NATIVE_M68K" = "xno" ]]; then
775		CPUINCLUDES="-I../uae_cpu"
#	Line 609 | Line 778 | fi
778
779		dnl Remove the "-g" option if set for GCC.
780		if [[ "x$HAVE_GCC27" = "xyes" ]]; then
781	<	dnl gb-- Probably not the cleanest way to take
782	<	CFLAGS=`echo $CFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
783	<	CXXFLAGS=`echo $CXXFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
781	>	CFLAGS=`echo $CFLAGS | sed -e 's/-g//g'`
782	>	CXXFLAGS=`echo $CXXFLAGS | sed -e 's/-g//g'`
783	>	fi
784	>
785	>	dnl Or if we have -Ofast
786	>	if [[ "x$HAVE_OFAST" = "xyes" ]]; then
787	>	CFLAGS="`echo $CFLAGS | sed -e 's/-g//g'` -Ofast"
788	>	CXXFLAGS="`echo $CXXFLAGS | sed -e 's/-g//g'` -Ofast"
789	>	CXXFLAGS="-LANG:std $CXXFLAGS"
790	>	LDFLAGS="$LDFLAGS -Ofast"
791		fi
792
793		dnl Generate Makefile.
#	Line 633 | Line 809 | echo ESD sound support ................
809		echo GTK user interface ............... : $WANT_GTK
810		echo mon debugger support ............. : $WANT_MON
811		echo Running m68k code natively ....... : $WANT_NATIVE_M68K
812	+	echo Floating-Point emulation core .... : $FPE_CORE_STR
813		echo Assembly optimizations ........... : $ASM_OPTIMIZATIONS
814		echo Addressing mode .................. : $ADDRESSING_MODE
815		echo

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