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

Comparing BasiliskII/src/Unix/configure.in (file contents):
Revision 1.39 by cebix, 2001-04-10T18:33:57Z vs.
Revision 1.40 by gbeauche, 2001-05-20T20:31:50Z

#	Line 212 | Line 212 | AC_STRUCT_TM
212		dnl Checks for library functions.
213		AC_CHECK_FUNCS(strdup cfmakeraw)
214		AC_CHECK_FUNCS(clock_gettime timer_create)
215	+	AC_CHECK_FUNCS(sigaction signal)
216
217		dnl Select system-dependant source files.
218		SERIALSRC=serial_unix.cpp
#	Line 328 | Line 329 | AC_CACHE_CHECK("whether we can map Low M
329		]
330		)
331
332	<	dnl Check if extended signals are supported.
333	<	AC_CACHE_CHECK("whether your system supports extended signal handlers",
334	<	ac_cv_have_extended_signals, [
332	>	dnl Check signal handlers need to be reinstalled
333	>	AC_CACHE_CHECK("whether signal handlers need to be reinstalled",
334	>	ac_cv_signal_need_reinstall, [
335	>	AC_LANG_SAVE
336	>	AC_LANG_CPLUSPLUS
337	>	AC_TRY_RUN([
338	>	#include <stdlib.h>
339	>	#ifdef HAVE_UNISTD_H
340	>	#include <unistd.h>
341	>	#endif
342	>	#include <signal.h>
343	>	static int handled_signal = 0;
344	>	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
345	>	int main(void) { /* returns 0 if signals need not to be reinstalled */
346	>	signal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
347	>	exit(handled_signal == 2);
348	>	}
349	>	],
350	>	[ac_cv_signal_need_reinstall=yes],
351	>	[ac_cv_signal_need_reinstall=no]
352	>	)
353	>	AC_LANG_RESTORE
354	>	]
355	>	)
356	>	AC_TRANSLATE_DEFINE(SIGNAL_NEED_REINSTALL, "$ac_cv_signal_need_reinstall")
357	>
358	>	dnl Check if sigaction handlers need to be reinstalled
359	>	AC_CACHE_CHECK("whether sigaction handlers need to be reinstalled",
360	>	ac_cv_sigaction_need_reinstall, [
361		AC_LANG_SAVE
362		AC_LANG_CPLUSPLUS
363		AC_TRY_RUN([
337	–	#include <unistd.h>
364		#include <stdlib.h>
365	+	#ifdef HAVE_UNISTD_H
366	+	#include <unistd.h>
367	+	#endif
368		#include <signal.h>
369	<	#include <fcntl.h>
370	<	#include <sys/mman.h>
371	<
372	<	static volatile caddr_t mem = 0;
373	<	static int zero_fd = -1;
374	<
375	<	static RETSIGTYPE segfault_handler(int, siginfo_t * sip, void *)
376	<	{ if ((caddr_t)(sip->si_addr) != mem) exit(1);
348	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
349	<
350	<	int main()
351	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
352	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
353	<	struct sigaction sa; sa.sa_sigaction = segfault_handler; sa.sa_flags = SA_SIGINFO;
354	<	sigaction(SIGSEGV, &sa, 0);
355	<	mem[0] = 0;
356	<	exit(1); // should not be reached
369	>	static int handled_signal = 0;
370	>	RETSIGTYPE sigusr1_handler(int) { handled_signal++; }
371	>	typedef RETSIGTYPE (*signal_handler)(int);
372	>	static signal_handler mysignal(int sig, signal_handler handler) {
373	>	struct sigaction old_sa;
374	>	struct sigaction new_sa;
375	>	new_sa.sa_handler = handler;
376	>	return ((sigaction(sig,&new_sa,&old_sa) < 0) ? SIG_IGN : old_sa.sa_handler);
377		}
378	+	int main(void) { /* returns 0 if signals need not to be reinstalled */
379	+	mysignal(SIGUSR1, sigusr1_handler); raise(SIGUSR1); raise(SIGUSR1);
380	+	exit(handled_signal == 2);
381	+	}
382	+	],
383	+	[ac_cv_sigaction_need_reinstall=yes],
384	+	[ac_cv_sigaction_need_reinstall=no]
385	+	)
386	+	AC_LANG_RESTORE
387	+	]
388	+	)
389	+	AC_TRANSLATE_DEFINE(SIGACTION_NEED_REINSTALL, "$ac_cv_sigaction_need_reinstall")
390	+
391	+	dnl Check if extended signals are supported.
392	+	AC_CACHE_CHECK("whether your system supports extended signal handlers",
393	+	ac_cv_have_extended_signals, [
394	+	AC_LANG_SAVE
395	+	AC_LANG_CPLUSPLUS
396	+	AC_TRY_RUN([
397	+	#define HAVE_SIGINFO_T 1
398	+	#define CONFIGURE_TEST
399	+	#include "sigsegv.cpp"
400		],
401		[ac_cv_have_extended_signals=yes],
402		[ac_cv_have_extended_signals=no]
#	Line 366 | Line 408 | AC_TRANSLATE_DEFINE(HAVE_SIGINFO_T, "$ac
408
409		dnl Otherwise, check for subterfuges.
410		if [[ "x$ac_cv_have_extended_signals" = "xno" ]]; then
411	<	case "$target_os" in
412	<	linux*)
413	<	if [[ "x$HAVE_I386" = "xyes" ]]; then
414	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
415	<	ac_cv_have_sigcontext_hack, [
416	<	AC_LANG_SAVE
417	<	AC_LANG_CPLUSPLUS
418	<	AC_TRY_RUN([
419	<	#include <unistd.h>
420	<	#include <signal.h>
421	<	#include <fcntl.h>
422	<	#include <sys/mman.h>
423	<
424	<	static volatile caddr_t mem = 0;
425	<	static int zero_fd = -1;
384	<
385	<	static RETSIGTYPE segfault_handler(int, struct sigcontext scs)
386	<	{ if ((caddr_t)(scs.cr2) != mem) exit(1);
387	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
388	<
389	<	int main()
390	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
391	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
392	<	struct sigaction sa; sa.sa_flags = 0;
393	<	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
394	<	sigaction(SIGSEGV, &sa, 0);
395	<	mem[0] = 0;
396	<	exit(1); // should not be reached
397	<	}
398	<	],
399	<	[ac_cv_have_sigcontext_hack=yes],
400	<	[ac_cv_have_sigcontext_hack=no]
401	<	)
402	<	AC_LANG_RESTORE
403	<	])
404	<	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
405	<	elif [[ "x$HAVE_POWERPC" = "xyes" ]]; then
406	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
407	<	ac_cv_have_sigcontext_hack, [
408	<	AC_LANG_SAVE
409	<	AC_LANG_CPLUSPLUS
410	<	AC_TRY_RUN([
411	<	#include <unistd.h>
412	<	#include <signal.h>
413	<	#include <fcntl.h>
414	<	#include <sys/mman.h>
415	<
416	<	static volatile caddr_t mem = 0;
417	<	static int zero_fd = -1;
418	<
419	<	static RETSIGTYPE segfault_handler(int, struct sigcontext_struct *scs)
420	<	{ if ((caddr_t)(scs->regs->dar) != mem) exit(1);
421	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
422	<
423	<	int main()
424	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
425	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
426	<	struct sigaction sa; sa.sa_flags = 0;
427	<	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
428	<	sigaction(SIGSEGV, &sa, 0);
429	<	mem[0] = 0;
430	<	exit(1); // should not be reached
431	<	}
432	<	],
433	<	[ac_cv_have_sigcontext_hack=yes],
434	<	[ac_cv_have_sigcontext_hack=no]
435	<	)
436	<	AC_LANG_RESTORE
437	<	])
438	<	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
439	<	fi
440	<	;;
441	<	netbsd*)
442	<	if [[ "x$HAVE_M68K" = "xyes" ]]; then
443	<	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
444	<	ac_cv_have_sigcontext_hack, [
445	<	AC_LANG_SAVE
446	<	AC_LANG_CPLUSPLUS
447	<	AC_TRY_RUN([
448	<	#include <unistd.h>
449	<	#include <signal.h>
450	<	#include <fcntl.h>
451	<	#include <sys/mman.h>
452	<
453	<	static volatile caddr_t mem = 0;
454	<	static int zero_fd = -1;
455	<
456	<	static RETSIGTYPE segfault_handler(int, int code)
457	<	{ if ((caddr_t)code != mem) exit(1);
458	<	munmap(mem, getpagesize()); close(zero_fd); exit(0); }
459	<
460	<	int main()
461	<	{ if ((zero_fd = open("/dev/zero", O_RDWR)) < 0) exit(1);
462	<	if ((mem = (caddr_t)mmap(0, getpagesize(), PROT_READ, MAP_PRIVATE, zero_fd, 0)) == (caddr_t)MAP_FAILED) exit(1);
463	<	struct sigaction sa; sa.sa_flags = 0;
464	<	sa.sa_handler = (RETSIGTYPE (*)(int))segfault_handler;
465	<	sigaction(SIGSEGV, &sa, 0);
466	<	mem[0] = 0;
467	<	exit(1); // should not be reached
468	<	}
469	<	],
470	<	[ac_cv_have_sigcontext_hack=yes],
471	<	[ac_cv_have_sigcontext_hack=no]
472	<	)
473	<	AC_LANG_RESTORE
474	<	])
475	<	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, $ac_cv_have_sigcontext_hack)
476	<	fi
477	<	;;
478	<	esac
411	>	AC_CACHE_CHECK("whether we then have a subterfuge for your system",
412	>	ac_cv_have_sigcontext_hack, [
413	>	AC_LANG_SAVE
414	>	AC_LANG_CPLUSPLUS
415	>	AC_TRY_RUN([
416	>	#define HAVE_SIGCONTEXT_SUBTERFUGE 1
417	>	#define CONFIGURE_TEST
418	>	#include "sigsegv.cpp"
419	>	],
420	>	[ac_cv_have_sigcontext_hack=yes],
421	>	[ac_cv_have_sigcontext_hack=no]
422	>	)
423	>	AC_LANG_RESTORE
424	>	])
425	>	AC_TRANSLATE_DEFINE(HAVE_SIGCONTEXT_SUBTERFUGE, "$ac_cv_have_sigcontext_hack")
426		fi
427
428		dnl Can we do Video on SEGV Signals ?

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