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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 1.50 by cebix, 2002-01-15T14:58:37Z

#	Line 1 | Line 1
1		dnl Process this file with autoconf to produce a configure script.
2	<	dnl Written in 1999 by Christian Bauer et al.
2	>	dnl Written in 2002 by Christian Bauer et al.
3
4		AC_INIT(main_unix.cpp)
5		AC_PREREQ(2.12)
6		AC_CONFIG_HEADER(config.h)
7
8	+	dnl These defines are necessary to get 64-bit file size support.
9	+	AC_DEFINE(_USE_LARGEFILE_SOURCE, 1, [Get more functions for correct standard I/O])
10	+	AC_DEFINE(_FILE_OFFSET_BITS, 64, [Get 64-bit file size support])
11	+
12		dnl Options.
13		AC_ARG_ENABLE(xf86-dga,      [  --enable-xf86-dga       use the XFree86 DGA extension [default=yes]], [WANT_XF86_DGA=$enableval], [WANT_XF86_DGA=yes])
14		AC_ARG_ENABLE(xf86-vidmode,  [  --enable-xf86-vidmode   use the XFree86 VidMode extension [default=yes]], [WANT_XF86_VIDMODE=$enableval], [WANT_XF86_VIDMODE=yes])
15		AC_ARG_ENABLE(fbdev-dga,     [  --enable-fbdev-dga      use direct frame buffer access via /dev/fb [default=yes]], [WANT_FBDEV_DGA=$enableval], [WANT_FBDEV_DGA=yes])
16	<	AC_ARG_ENABLE(vosf,          [  --enable-vosf           enable video on SEGV signals [default=no]], [WANT_VOSF=$enableval], [WANT_VOSF=no])
16	>	AC_ARG_ENABLE(vosf,          [  --enable-vosf           enable video on SEGV signals [default=yes]], [WANT_VOSF=$enableval], [WANT_VOSF=yes])
17	>
18	>	dnl FPU emulation core.
19	>	AC_ARG_ENABLE(fpe,
20	>	[  --enable-fpe=which      specify which fpu emulator to use [default=opt]],
21	>	[ case "$enableval" in
22	>	default)    FPE_CORE="default";; dnl fpu_x86.cpp if i386 architecture, fpu_uae.cpp otherwise
23	>	uae)            FPE_CORE="uae";;
24	>	*)                      AC_MSG_ERROR([--enable-fpe takes only one of the following values: default, uae]);;
25	>	esac
26	>	],
27	>	[ FPE_CORE="default"
28	>	])
29
30		dnl Addressing modes.
31		AC_ARG_ENABLE(addressing,
#	Line 40 | Line 56 | case "$target_os" in
56		netbsd*)      OS_TYPE=netbsd;;
57		freebsd*)     OS_TYPE=freebsd;;
58		solaris*)     OS_TYPE=solaris;;
59	<	*)            OS_TYPE=`echo $target_os | sed -e 's/-/_/' | sed -e 's/\./_/'`;;
59	>	darwin*)      OS_TYPE=darwin;;
60	>	*)            OS_TYPE=`echo $target_os | sed -e 's/-/_/g' | sed -e 's/\./_/g'`;;
61		esac
62		DEFINES="$DEFINES -DOS_$OS_TYPE"
63
#	Line 54 | Line 71 | case "$target_cpu" in
71		m68k* ) CPU_TYPE=m68k HAVE_M68K=yes;;
72		sparc* ) CPU_TYPE=sparc HAVE_SPARC=yes;;
73		powerpc* ) CPU_TYPE=powerpc HAVE_POWERPC=yes;;
74	<	*) CPU_TYPE=`echo $target_cpu | sed -e 's/-/_/'`;;
74	>	*) CPU_TYPE=`echo $target_cpu | sed -e 's/-/_/g'`;;
75		esac
76		DEFINES="$DEFINES -DCPU_$CPU_TYPE"
77
#	Line 88 | Line 105 | fi
105
106		dnl Checks for libraries.
107		AC_CHECK_LIB(posix4, sem_init)
108	+	AC_CHECK_LIB(rt, timer_create)
109
110		dnl We need X11.
111		AC_PATH_XTRA
#	Line 179 | Line 197 | fi
197
198		dnl Checks for header files.
199		AC_HEADER_STDC
200	<	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h)
200	>	AC_CHECK_HEADERS(unistd.h fcntl.h sys/time.h sys/mman.h)
201
202		dnl Checks for typedefs, structures, and compiler characteristics.
203		AC_C_BIGENDIAN
#	Line 192 | Line 210 | AC_CHECK_SIZEOF(long long, 8)
210		AC_CHECK_SIZEOF(void *, 4)
211		AC_TYPE_OFF_T
212		AC_CHECK_TYPE(loff_t, off_t)
213	+	TYPE_SOCKLEN_T
214		AC_TYPE_SIZE_T
215		AC_TYPE_SIGNAL
216		AC_HEADER_TIME
#	Line 200 | Line 219 | AC_STRUCT_TM
219		dnl Checks for library functions.
220		AC_CHECK_FUNCS(strdup cfmakeraw)
221		AC_CHECK_FUNCS(clock_gettime timer_create)
222	+	AC_CHECK_FUNCS(sigaction signal)
223	+	AC_CHECK_FUNCS(mmap mprotect munmap)
224	+	AC_CHECK_FUNCS(vm_allocate vm_deallocate vm_protect)
225	+
226	+	dnl Darwin seems to define mach_task_self() instead of task_self().
227	+	AC_CHECK_FUNCS(mach_task_self task_self)
228
229		dnl Select system-dependant source files.
230		SERIALSRC=serial_unix.cpp
#	Line 210 | Line 235 | EXTRASYSSRCS=
235		CAN_NATIVE_M68K=no
236		case "$target_os" in
237		linux*)
238	<	ETHERSRC=Linux/ether_linux.cpp
214	<	SCSISRC=Linux/scsi_linux.cpp
238	>	ETHERSRC=ether_unix.cpp
239		AUDIOSRC=audio_oss_esd.cpp
240	+	SCSISRC=Linux/scsi_linux.cpp
241		;;
242	<	freebsd*3.*)
242	>	freebsd*)
243	>	ETHERSRC=ether_unix.cpp
244		AUDIOSRC=audio_oss_esd.cpp
245		DEFINES="$DEFINES -DBSD_COMP"
246	+	CXXFLAGS="$CXXFLAGS -fpermissive"
247		dnl Check for the CAM library
248		AC_CHECK_LIB(cam, cam_open_btl, HAVE_LIBCAM=yes, HAVE_LIBCAM=no)
249		if [[ "x$HAVE_LIBCAM" = "xno" ]]; then
250		AC_MSG_WARN([Cannot find libcam for SCSI management, disabling SCSI support.])
251		else
252		dnl Check for the sys kernel includes
253	<	AC_CHECK_HEADER(/sys/cam/cam.h)
254	<	if [[ "x$ac_cv_header__sys_cam_cam_h" = "xno" ]]; then
253	>	AC_CHECK_HEADER(camlib.h)
254	>	if [[ "x$ac_cv_header_camlib_h" = "xno" ]]; then
255		dnl In this case I should fix this thing including a "patch"
256		dnl to access directly to the functions in the kernel :) --Orlando
257	<	AC_MSG_WARN([Cannot find kernel includes for CAM library, disabling SCSI support.])
257	>	AC_MSG_WARN([Cannot find includes for CAM library, disabling SCSI support.])
258		else
259		SCSISRC=FreeBSD/scsi_freebsd.cpp
233	–	CXXFLAGS="$CXXFLAGS -I/sys"
234	–	CFLAGS="$CFLAGS -I/sys"
260		LIBS="$LIBS -lcam"
261		DEFINES="$DEFINES -DCAM"
262		fi
263		fi
264		;;
240	–	freebsd*)
241	–	DEFINES="$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="$LIBS -lscsi"
254	–	fi
255	–	fi
256	–	;;
265		netbsd*)
266		CAN_NATIVE_M68K=yes
267		;;
#	Line 262 | Line 270 | solaris*)
270		DEFINES="$DEFINES -DBSD_COMP -D_POSIX_PTHREAD_SEMANTICS"
271		;;
272		irix*)
273	+	ETHERSRC=ether_unix.cpp
274		AUDIOSRC=Irix/audio_irix.cpp
275		EXTRASYSSRCS=Irix/unaligned.c
276		dnl IRIX headers work fine, but somehow don't define or use "STDC_HEADERS"
277		DEFINES="$DEFINES -DCRTSCTS=CNEW_RTSCTS -DB230400=B115200 -DSTDC_HEADERS"
278		LIBS="$LIBS -laudio"
279	+	WANT_ESD=no
280	+
281	+	dnl Check if our compiler supports -Ofast (MIPSPro)
282	+	HAVE_OFAST=no
283	+	ocflags="$CFLAGS"
284	+	CFLAGS=`echo $CFLAGS | sed -e 's/ -g / -Ofast /;s/^-g /-Ofast /;s/-g$/ -Ofast/;s/^-g$/-Ofast/'`
285	+	AC_MSG_CHECKING(if "-Ofast" works)
286	+	dnl Do a test compile of an empty function
287	+	AC_TRY_COMPILE(,, [AC_MSG_RESULT(yes); HAVE_OFAST=yes], AC_MSG_RESULT(no))
288	+	CFLAGS="$ocflags"
289	+
290		;;
291		esac
292
#	Line 291 | Line 311 | dnl to be put into the config.h file
311		dnl $1 -- the macro to define
312		dnl $2 -- the value to translate
313		AC_DEFUN(AC_TRANSLATE_DEFINE, [
314	<	if [[ "x$2" = "xyes" ]]; then
314	>	if [[ "x$2" = "xyes" -o "x$2" = "xguessing yes" ]]; then
315		AC_DEFINE($1)
316		fi
317		])
318
319	+	dnl Various checks if the system supports vm_allocate() and the like functions.
320	+	have_mach_vm=no
321	+	if [[ "x$ac_cv_func_vm_allocate" = "xyes" -a "x$ac_cv_func_vm_deallocate" = "xyes" -a \
322	+	"x$ac_cv_func_vm_protect" = "xyes" ]]; then
323	+	have_mach_vm=yes
324	+	fi
325	+	AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm")
326	+
327	+	dnl Check that vm_allocate(), vm_protect() work
328	+	if [[ "x$have_mach_vm" = "xyes" ]]; then
329	+
330	+	AC_CACHE_CHECK("whether vm_protect works",
331	+	ac_cv_vm_protect_works, [
332	+	AC_LANG_SAVE
333	+	AC_LANG_CPLUSPLUS
334	+	ac_cv_vm_protect_works=yes
335	+	dnl First the tests that should segfault
336	+	for test_def in NONE_READ NONE_WRITE READ_WRITE; do
337	+	AC_TRY_RUN([
338	+	#define CONFIGURE_TEST_VM_MAP
339	+	#define TEST_VM_PROT_$test_def
340	+	#include "vm_alloc.cpp"
341	+	], ac_cv_vm_protect_works=no, rm -f core,
342	+	dnl When cross-compiling, do not assume anything
343	+	ac_cv_vm_protect_works="guessing no"
344	+	)
345	+	done
346	+	AC_TRY_RUN([
347	+	#define CONFIGURE_TEST_VM_MAP
348	+	#define TEST_VM_PROT_RDWR_WRITE
349	+	#include "vm_alloc.cpp"
350	+	], , ac_cv_vm_protect_works=no,
351	+	dnl When cross-compiling, do not assume anything
352	+	ac_cv_vm_protect_works="guessing no"
353	+	)
354	+	AC_LANG_RESTORE
355	+	]
356	+	)
357	+
358	+	dnl Remove support for vm_allocate() if vm_protect() does not work
359	+	if [[ "x$have_mach_vm" = "xyes" ]]; then
360	+	case $ac_cv_vm_protect_works in
361	+	*yes) have_mach_vm=yes;;
362	+	*no) have_mach_vm=no;;
363	+	esac
364	+	fi
365	+	AC_TRANSLATE_DEFINE(HAVE_MACH_VM, "$have_mach_vm")
366	+
367	+	fi dnl HAVE_MACH_VM
368	+
369	+	dnl Various checks if the system supports mmap() and the like functions.
370	+	dnl ... and Mach memory allocators are not supported
371	+	have_mmap_vm=no
372	+	if [[ "x$ac_cv_func_mmap" = "xyes" -a "x$ac_cv_func_munmap" = "xyes" -a \
373	+	"x$ac_cv_func_mprotect" = "xyes" ]]; then
374	+	if [[ "x$have_mach_vm" = "xno" ]]; then
375	+	have_mmap_vm=yes
376	+	fi
377	+	fi
378	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, "$have_mmap_vm")
379	+
380	+	dnl Check that mmap() and associated functions work.
381	+	if [[ "x$have_mmap_vm" = "xyes" ]]; then
382	+
383	+	dnl Check if we have a working anonymous mmap()
384	+	AC_CACHE_CHECK("whether mmap supports MAP_ANON",
385	+	ac_cv_mmap_anon, [
386	+	AC_LANG_SAVE
387	+	AC_LANG_CPLUSPLUS
388	+	AC_TRY_RUN([
389	+	#define HAVE_MMAP_ANON
390	+	#define CONFIGURE_TEST_VM_MAP
391	+	#define TEST_VM_MMAP_ANON
392	+	#include "vm_alloc.cpp"
393	+	], ac_cv_mmap_anon=yes, ac_cv_mmap_anon=no,
394	+	dnl When cross-compiling, do not assume anything.
395	+	ac_cv_mmap_anon="guessing no"
396	+	)
397	+	AC_LANG_RESTORE
398	+	]
399	+	)
400	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_ANON, "$ac_cv_mmap_anon")
401	+
402	+	AC_CACHE_CHECK("whether mmap supports MAP_ANONYMOUS",
403	+	ac_cv_mmap_anonymous, [
404	+	AC_LANG_SAVE
405	+	AC_LANG_CPLUSPLUS
406	+	AC_TRY_RUN([
407	+	#define HAVE_MMAP_ANONYMOUS
408	+	#define CONFIGURE_TEST_VM_MAP
409	+	#define TEST_VM_MMAP_ANON
410	+	#include "vm_alloc.cpp"
411	+	], ac_cv_mmap_anonymous=yes, ac_cv_mmap_anonymous=no,
412	+	dnl When cross-compiling, do not assume anything.
413	+	ac_cv_mmap_anonymous="guessing no"
414	+	)
415	+	AC_LANG_RESTORE
416	+	]
417	+	)
418	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_ANONYMOUS, "$ac_cv_mmap_anonymous")
419	+
420	+	AC_CACHE_CHECK("whether mprotect works",
421	+	ac_cv_mprotect_works, [
422	+	AC_LANG_SAVE
423	+	AC_LANG_CPLUSPLUS
424	+	ac_cv_mprotect_works=yes
425	+	dnl First the tests that should segfault
426	+	for test_def in NONE_READ NONE_WRITE READ_WRITE; do
427	+	AC_TRY_RUN([
428	+	#define CONFIGURE_TEST_VM_MAP
429	+	#define TEST_VM_PROT_$test_def
430	+	#include "vm_alloc.cpp"
431	+	], ac_cv_mprotect_works=no, rm -f core,
432	+	dnl When cross-compiling, do not assume anything
433	+	ac_cv_mprotect_works="guessing no"
434	+	)
435	+	done
436	+	AC_TRY_RUN([
437	+	#define CONFIGURE_TEST_VM_MAP
438	+	#define TEST_VM_PROT_RDWR_WRITE
439	+	#include "vm_alloc.cpp"
440	+	], , ac_cv_mprotect_works=no,
441	+	dnl When cross-compiling, do not assume anything
442	+	ac_cv_mprotect_works="guessing no"
443	+	)
444	+	AC_LANG_RESTORE
445	+	]
446	+	)
447	+
448	+	dnl Remove support for mmap() if mprotect() does not work
449	+	if [[ "x$have_mmap_vm" = "xyes" ]]; then
450	+	case $ac_cv_mprotect_works in
451	+	*yes) have_mmap_vm=yes;;
452	+	*no) have_mmap_vm=no;;
453	+	esac
454	+	fi
455	+	AC_TRANSLATE_DEFINE(HAVE_MMAP_VM, $have_mmap_vm)
456	+
457	+	fi dnl HAVE_MMAP_VM
458	+
459		dnl Check if we can mmap 0x2000 bytes from 0x0000
460		AC_CACHE_CHECK("whether we can map Low Memory area 0x0000-0x2000",
461		ac_cv_can_map_lm, [
462		AC_LANG_SAVE
463		AC_LANG_CPLUSPLUS
464		AC_TRY_RUN([
465	<	#include <unistd.h>
466	<	#include <fcntl.h>
467	<	#include <sys/mman.h>
468	<
469	<	int main()
470	<	{ int zero_fd; char * lm;
471	<	if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
472	<	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);
465	>	#include "vm_alloc.cpp"
466	>	int main(void) { /* returns 0 if we could map the lowmem globals */
467	>	volatile char * lm;
468	>	if (vm_init() < 0) exit(1);
469	>	if ((lm = (volatile char *)vm_acquire_fixed(0, 0x2000)) == VM_MAP_FAILED) exit(1);
470	>	lm[0] = 'z';
471	>	if (vm_release((char *)lm, 0x2000) < 0) exit(1);
472	>	vm_exit(); exit(0);
473		}
474	<	],
475	<	[ac_cv_can_map_lm=yes],
476	<	[ac_cv_can_map_lm=no]
474	>	], ac_cv_can_map_lm=yes, ac_cv_can_map_lm=no,
475	>	dnl When cross-compiling, do not assume anything.
476	>	ac_cv_can_map_lm="guessing no"
477		)
478		AC_LANG_RESTORE
479		]
480		)
481
482	<	dnl Check if extended signals are supported.
483	<	AC_CACHE_CHECK("whether your system supports extended signal handlers",
484	<	ac_cv_have_extended_signals, [
482	>	dnl Check signal handlers need to be reinstalled
483	>	AC_CACHE_CHECK("whether signal handlers need to be reinstalled",
484	>	ac_cv_signal_need_reinstall, [
485		AC_LANG_SAVE
486		AC_LANG_CPLUSPLUS
487		AC_TRY_RUN([
332	–	#include <unistd.h>
488		#include <stdlib.h>
489	+	#ifdef HAVE_UNISTD_H
490	+	#include <unistd.h>
491	+	#endif
492		#include <signal.h>
493	<	#include <fcntl.h>
494	<	#include <sys/mman.h>
495	<
496	<	static volatile caddr_t mem = 0;
497	<	static int zero_fd = -1;
493	>	static int handled_signal = 0;
494	>	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
495	>	int main(void) { /* returns 0 if signals need not to be reinstalled */
496	>	signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
497	>	exit(handled_signal == 2);
498	>	}
499	>	], ac_cv_signal_need_reinstall=yes, ac_cv_signal_need_reinstall=no,
500	>	dnl When cross-compiling, do not assume anything.
501	>	ac_cv_signal_need_reinstall="guessing yes"
502	>	)
503	>	AC_LANG_RESTORE
504	>	]
505	>	)
506	>	AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall")
507
508	<	static RETSIGTYPE segfault_handler(int, siginfo_t * sip, void *)
509	<	{ if ((caddr_t)(sip->si_addr) != mem) exit(1);
510	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
511	<
512	<	int main()
513	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
514	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
515	<	struct sigaction sa; sa.sa_sigaction = segfault_handler; sa.sa_flags = SA_SIGINFO;
516	<	sigaction(SIGSEGV, &sa, 0);
517	<	mem[0] = 0;
518	<	exit(1); // should not be reached
508	>	dnl Check if sigaction handlers need to be reinstalled
509	>	AC_CACHE_CHECK("whether sigaction handlers need to be reinstalled",
510	>	ac_cv_sigaction_need_reinstall, [
511	>	AC_LANG_SAVE
512	>	AC_LANG_CPLUSPLUS
513	>	AC_TRY_RUN([
514	>	#include <stdlib.h>
515	>	#ifdef HAVE_UNISTD_H
516	>	#include <unistd.h>
517	>	#endif
518	>	#include <signal.h>
519	>	static int handled_signal = 0;
520	>	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
521	>	typedef RETSIGTYPE (*signal_handler)(int);
522	>	static signal_handler mysignal(int sig, signal_handler handler) {
523	>	struct sigaction old_sa;
524	>	struct sigaction new_sa;
525	>	new_sa.sa_handler = handler;
526	>	return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
527		}
528	<	],
529	<	[ac_cv_have_extended_signals=yes],
530	<	[ac_cv_have_extended_signals=no]
528	>	int main(void) { /* returns 0 if signals need not to be reinstalled */
529	>	mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
530	>	exit(handled_signal == 2);
531	>	}
532	>	], ac_cv_sigaction_need_reinstall=yes, ac_cv_sigaction_need_reinstall=no,
533	>	dnl When cross-compiling, do not assume anything.
534	>	ac_cv_sigaction_need_reinstall="guessing yes"
535	>	)
536	>	AC_LANG_RESTORE
537	>	]
538	>	)
539	>	AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall")
540	>
541	>	dnl Check if extended signals are supported.
542	>	AC_CACHE_CHECK("whether your system supports extended signal handlers",
543	>	ac_cv_have_extended_signals, [
544	>	AC_LANG_SAVE
545	>	AC_LANG_CPLUSPLUS
546	>	AC_TRY_RUN([
547	>	#define HAVE_SIGINFO_T 1
548	>	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
549	>	#include "vm_alloc.cpp"
550	>	#include "sigsegv.cpp"
551	>	], ac_cv_have_extended_signals=yes, ac_cv_have_extended_signals=no,
552	>	dnl When cross-compiling, do not assume anything.
553	>	ac_cv_have_extended_signals=no
554		)
555		AC_LANG_RESTORE
556		]
#	Line 361 | Line 559 | AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac
559
560		dnl Otherwise, check for subterfuges.
561		if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
562	<	case "$target_os" in
563	<	linux*)
564	<	if [[ "x$HAVE_I386" = "xyes" ]]; then
565	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
566	<	ac_cv_have_sigcontext_hack, [
567	<	AC_LANG_SAVE
568	<	AC_LANG_CPLUSPLUS
569	<	AC_TRY_RUN([
570	<	#include <unistd.h>
571	<	#include <signal.h>
572	<	#include <fcntl.h>
573	<	#include <sys/mman.h>
574	<
575	<	static volatile caddr_t mem = 0;
576	<	static int zero_fd = -1;
577	<
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, $ac_cv_have_sigcontext_hack)
471	<	fi
472	<	;;
473	<	esac
562	>	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
563	>	ac_cv_have_sigcontext_hack, [
564	>	AC_LANG_SAVE
565	>	AC_LANG_CPLUSPLUS
566	>	AC_TRY_RUN([
567	>	#define HAVE_SIGCONTEXT_SUBTERFUGE 1
568	>	#define CONFIGURE_TEST_SIGSEGV_RECOVERY
569	>	#include "vm_alloc.cpp"
570	>	#include "sigsegv.cpp"
571	>	], ac_cv_have_sigcontext_hack=yes, ac_cv_have_sigcontext_hack=no,
572	>	dnl When cross-compiling, do not assume anything.
573	>	ac_cv_have_sigcontext_hack=no
574	>	)
575	>	AC_LANG_RESTORE
576	>	])
577	>	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack")
578		fi
579
580		dnl Can we do Video on SEGV Signals ?
#	Line 553 | Line 657 | AC_EGREP_CPP(yes,
657		#endif
658		], [AC_MSG_RESULT(yes); HAVE_GCC27=yes], AC_MSG_RESULT(no))
659
660	+	dnl Check for GCC 3.0 or higher.
661	+	HAVE_GCC30=no
662	+	AC_MSG_CHECKING(for GCC 3.0 or higher)
663	+	AC_EGREP_CPP(yes,
664	+	[#if __GNUC__ >= 3
665	+	yes
666	+	#endif
667	+	], [AC_MSG_RESULT(yes); HAVE_GCC30=yes], AC_MSG_RESULT(no))
668	+
669		dnl Set "-fomit-frame-pointer" on i386 GCC 2.7 or higher.
670		if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
671		CFLAGS="$CFLAGS -fomit-frame-pointer"
672		CXXFLAGS="$CXXFLAGS -fomit-frame-pointer"
673		fi
674
675	+	dnl (gb) Do not merge constants since it breaks fpu/fpu_x86.cpp.
676	+	dnl As of 2001/08/02, this affects the following compilers:
677	+	dnl Official: probably gcc-3.1 (mainline CVS)
678	+	dnl Mandrake: gcc-2.96 >= 0.59mdk, gcc-3.0.1 >= 0.1mdk
679	+	dnl Red Hat : gcc-2.96 >= 89, gcc-3.0 >= 1
680	+	if [[ "x$HAVE_GCC27" = "xyes" ]]; then
681	+	SAVED_CXXFLAGS="$CXXFLAGS"
682	+	CXXFLAGS="$CXXFLAGS -fno-merge-constants"
683	+	AC_CACHE_CHECK([whether GCC supports constants merging], ac_cv_gcc_constants_merging, [
684	+	AC_LANG_SAVE
685	+	AC_LANG_CPLUSPLUS
686	+	AC_TRY_COMPILE([],[],[ac_cv_gcc_constants_merging=yes],[ac_cv_gcc_constants_merging=no])
687	+	AC_LANG_RESTORE
688	+	])
689	+	if [[ "x$ac_cv_gcc_constants_merging" != "xyes" ]]; then
690	+	CXXFLAGS="$SAVED_CXXFLAGS"
691	+	fi
692	+	fi
693	+
694		dnl Select appropriate CPU source and REGPARAM define.
695		ASM_OPTIMIZATIONS=none
696		CPUSRCS="cpuemu1.cpp cpuemu2.cpp cpuemu3.cpp cpuemu4.cpp cpuemu5.cpp cpuemu6.cpp cpuemu7.cpp cpuemu8.cpp"
697	<	FPUSRCS="../uae_cpu/fpp.cpp"
698	<	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" ]]; then
697	>	FPUSRCS="../uae_cpu/fpu/fpu_uae.cpp"
698	>	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" -a "x$OS_TYPE" != "xfreebsd" ]]; then
699		dnl i386 CPU
700		DEFINES="$DEFINES -DREGPARAM=\"__attribute__((regparm(3)))\""
701		if [[ "x$HAVE_GAS" = "xyes" ]]; then
702		ASM_OPTIMIZATIONS=i386
703		DEFINES="$DEFINES -DX86_ASSEMBLY -DUNALIGNED_PROFITABLE -DOPTIMIZED_FLAGS"
704	<	CPUSRCS="../uae_cpu/compiler.cpp cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
704	>	CPUSRCS="cpufast1.s cpufast2.s cpufast3.s cpufast4.s cpufast5.s cpufast6.s cpufast7.s cpufast8.s"
705		FPUSRCS="../uae_cpu/fpu_x86.cpp"
706		fi
707		elif [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_SPARC" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
#	Line 601 | Line 733 | elif [[ "x$WANT_NATIVE_M68K" = "xyes" ]]
733		CPUSRCS="asm_support.s"
734		fi
735
736	+	dnl Select appropriate FPU source.
737	+	dnl 1. Optimized X86 assembly core if target is i386 architecture
738	+	SAVED_DEFINES=$DEFINES
739	+	if [[ "x$FPE_CORE" = "xdefault" ]]; then
740	+	if [[ "x$HAVE_GCC27" = "xyes" -a "x$HAVE_I386" = "xyes" -a "x$HAVE_GAS" = "xyes" ]]; then
741	+	DEFINES="$DEFINES -DFPU_X86"
742	+	FPE_CORE_STR="i386 optimized core"
743	+	FPUSRCS="../uae_cpu/fpu/fpu_x86.cpp"
744	+	FPE_CORE="i386"
745	+	else
746	+	FPE_CORE="uae"
747	+	fi
748	+	fi
749	+
750	+	dnl 2. JIT-FPU only supports IEEE-based implementation.
751	+	if [[ "x$WANT_JIT_FPU" = "xyes" -a "x$FPE_CORE" != "xieee" ]]; then
752	+	AC_MSG_WARN([Sorry, JIT-FPU supports only the "ieee" FPE implementation])
753	+	FPE_CORE="ieee"
754	+	dnl Restore previous variables. FPE_CORE_STR and FPUSRCS are overwritten
755	+	DEFINES=$SAVED_DEFINES
756	+	fi
757	+
758	+	dnl 3. Choose either IEEE-based implementation or the old UAE core
759	+	if [[ "x$FPE_CORE" = "xieee" ]]; then
760	+	AC_CHECK_HEADERS(fenv.h)
761	+	AC_CHECK_FUNCS(feclearexcept fegetexceptflag feraiseexcept fesetexceptflag fetestexcept)
762	+	AC_CHECK_FUNCS(fegetround fesetround)
763	+	DEFINES="$DEFINES -DFPU_IEEE"
764	+	FPE_CORE_STR="ieee-based fpu core"
765	+	FPUSRCS="../uae_cpu/fpu/fpu_ieee.cpp"
766	+	elif [[ "x$FPE_CORE" = "xuae" ]]; then
767	+	DEFINES="$DEFINES -DFPU_UAE"
768	+	FPE_CORE_STR="original uae core"
769	+	FPUSRCS="../uae_cpu/fpu/fpu_uae.cpp"
770	+	fi
771	+
772	+	dnl Check for certain math functions
773	+	AC_CHECK_FUNCS(atanh)
774	+	AC_CHECK_FUNCS(isnan isinf)             dnl C99
775	+	AC_CHECK_FUNCS(isnanl isinfl)   dnl IEEE ?
776	+
777		dnl UAE CPU sources for all non-m68k-native architectures.
778		if [[ "x$WANT_NATIVE_M68K" = "xno" ]]; then
779		CPUINCLUDES="-I../uae_cpu"
#	Line 609 | Line 782 | fi
782
783		dnl Remove the "-g" option if set for GCC.
784		if [[ "x$HAVE_GCC27" = "xyes" ]]; then
785	<	dnl gb-- Probably not the cleanest way to take
786	<	CFLAGS=`echo $CFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
787	<	CXXFLAGS=`echo $CXXFLAGS | sed -e 's/ -g / /;s/^-g / /;s/ -g$/ /;s/^-g$//'`
785	>	CFLAGS=`echo $CFLAGS | sed -e 's/-g//g'`
786	>	CXXFLAGS=`echo $CXXFLAGS | sed -e 's/-g//g'`
787	>	fi
788	>
789	>	dnl Or if we have -Ofast
790	>	if [[ "x$HAVE_OFAST" = "xyes" ]]; then
791	>	CFLAGS="`echo $CFLAGS | sed -e 's/-g//g'` -Ofast"
792	>	CXXFLAGS="`echo $CXXFLAGS | sed -e 's/-g//g'` -Ofast"
793	>	CXXFLAGS="-LANG:std $CXXFLAGS"
794	>	LDFLAGS="$LDFLAGS -Ofast"
795		fi
796
797		dnl Generate Makefile.
#	Line 633 | Line 813 | echo ESD sound support ................
813		echo GTK user interface ............... : $WANT_GTK
814		echo mon debugger support ............. : $WANT_MON
815		echo Running m68k code natively ....... : $WANT_NATIVE_M68K
816	+	echo Floating-Point emulation core .... : $FPE_CORE_STR
817		echo Assembly optimizations ........... : $ASM_OPTIMIZATIONS
818		echo Addressing mode .................. : $ADDRESSING_MODE
819		echo

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