diff options
Diffstat (limited to 'libsigsegv/configure.ac')
| -rw-r--r-- | libsigsegv/configure.ac | 912 |
1 files changed, 0 insertions, 912 deletions
diff --git a/libsigsegv/configure.ac b/libsigsegv/configure.ac deleted file mode 100644 index 468991d8..00000000 --- a/libsigsegv/configure.ac +++ /dev/null @@ -1,912 +0,0 @@ -dnl Autoconf configuration for libsigsegv. -dnl Process this file with autoconf to produce a configure script. -dnl -dnl Copyright (C) 2002-2009 Bruno Haible <bruno@clisp.org> -dnl -dnl This program is free software; you can redistribute it and/or modify -dnl it under the terms of the GNU General Public License as published by -dnl the Free Software Foundation; either version 2, or (at your option) -dnl any later version. -dnl -dnl This program is distributed in the hope that it will be useful, -dnl but WITHOUT ANY WARRANTY; without even the implied warranty of -dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the -dnl GNU General Public License for more details. -dnl -dnl You should have received a copy of the GNU General Public License -dnl along with this program; if not, write to the Free Software Foundation, -dnl Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. - -AC_PREREQ([2.62]) -AC_INIT -AC_CONFIG_MACRO_DIR([m4]) -AC_CONFIG_SRCDIR([src/sigsegv.h.in]) -AC_CONFIG_AUX_DIR([build-aux]) - -RSE_BOLD - -{ echo; echo "${term_bold}Build Tools:${term_norm}"; } >& AS_MESSAGE_FD - -AM_INIT_AUTOMAKE(libsigsegv, 2.7-pre1) -AM_CONFIG_HEADER(config.h) - -AC_PROG_CC -AC_PROG_CPP - -AC_CANONICAL_HOST -AC_MSG_CHECKING([host platform]) -sv_cv_host="$host" -changequote(,)dnl Autoconf 2.52 brokenness -case "$host_os" in - linux | linux-*) - kernelversion=`uname -r | sed -e 's/^\([0-9.]*\).*/\1/'` - sv_cv_host=`echo $sv_cv_host | sed -e "s/linux/linux$kernelversion/"` - ;; -esac -changequote([,])dnl Autoconf 2.52 brokenness -cat > conftest.c << EOF -#include <features.h> -#ifdef __GNU_LIBRARY__ -Version __GLIBC__ . __GLIBC_MINOR__ -#endif -EOF -glibcversion=`$CPP $CPPFLAGS conftest.c 2>/dev/null | grep Version | sed -e 's/Version//' -e 's/ //g'` -if test -n "$glibcversion"; then - sv_cv_host="$sv_cv_host-glibc$glibcversion" -fi -AC_MSG_RESULT([$sv_cv_host]) -PLATFORM="$sv_cv_host" -AC_SUBST([PLATFORM]) - -AC_PROG_INSTALL - -LT_INIT([disable-shared]) - -# For testing cross-compilation behaviour. -#cross_compiling=yes - -{ echo; echo "${term_bold}Optional Platform Environment:${term_norm}"; } >& AS_MESSAGE_FD - -dnl Headers to be included with <signal.h>. On MacOS X (Darwin) one also -dnl needs <sys/signal.h>. -AC_CHECK_HEADERS([sys/signal.h]) - -dnl List of signals that are sent when an invalid virtual memory address -dnl is accessed, or when the stack overflows. -case "$host_os" in - sunos4* | freebsd* | dragonfly* | openbsd* | netbsd* | kfreebsd* | knetbsd*) - CFG_SIGNALS=signals-bsd.h ;; - hpux*) - CFG_SIGNALS=signals-hpux.h ;; - macos* | darwin*) - CFG_SIGNALS=signals-macos.h ;; - gnu*) - CFG_SIGNALS=signals-hurd.h ;; - *) - CFG_SIGNALS=signals.h ;; -esac -AC_DEFINE_UNQUOTED([CFG_SIGNALS], ["$CFG_SIGNALS"], - [The name of the include file describing the fault signals.]) - -# How to determine the memory page size. -SV_GETPAGESIZE - -# How to allocate fresh memory using mmap. -# (We need mmap, because mprotect() doesn't work on malloc()ed memory on -# some systems.) -SV_MMAP_ANON - -# How to write a SIGSEGV handler with access to the fault address. - -# On MacOS X 10.2 or newer, we don't need these tests, because we'll end up -# using handler-macos.c anyway. If we were to perform the tests, 5 Crash Report -# dialog windows would pop up. -case "$host_os" in - macos* | darwin[[6-9]]* | darwin[[1-9]][[0-9]]*) ;; - *) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([POSIX], sv_cv_fault_posix, - [*-*-solaris2.[7-9] | i?86-*-linux2.[4-9]* | i?86-*-freebsd[4-9]* | i?86-*-mirbsd1[0-9] | alpha*-dec-osf[4-9]* | *-*-hpux11* | mips-sgi-irix6*], - [], - [int sig, siginfo_t *sip, void *ucp], - [sip->si_addr], - [action.sa_sigaction = &sigsegv_handler; - action.sa_flags = SA_SIGINFO;]) - -SV_TRY_FAULT([Linux/i386], sv_cv_fault_linux_i386, [i?86-*-linux2.[2-9]*], - [#include <asm/sigcontext.h>], - [int sig, struct sigcontext sc], - [sc.cr2]) - -SV_TRY_FAULT([old Linux/i386], sv_cv_fault_linux_i386_old, - [i?86-*-linux2.[2-9]*], - [], - [int sig, unsigned int more], - [((unsigned long *) &more) [21]]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([Linux/m68k], sv_cv_fault_linux_m68k, [], - [#include <asm/sigcontext.h> -#include "$srcdir/src/fault-linux-m68k.c"], - [int sig, int code, struct sigcontext *scp], - [get_fault_addr (scp)]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([Linux/PowerPC], sv_cv_fault_linux_powerpc, [], - [#include <asm/sigcontext.h>], - [int sig, struct sigcontext *scp], - [scp->regs->dar]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([Linux/HPPA], sv_cv_fault_linux_hppa, [], - [], - [int sig, siginfo_t *sip, void *ucp], - [sip->si_ptr], - [action.sa_sigaction = &sigsegv_handler; - action.sa_flags = SA_SIGINFO;]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([BSD], sv_cv_fault_bsd, [i?86-*-freebsd[4-9]*], - [], - [int sig, int code, struct sigcontext *scp, void *addr], - [addr]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([IRIX], sv_cv_fault_irix, [mips-sgi-irix6*], - [], - [int sig, int code, struct sigcontext *scp], - [(unsigned long) scp->sc_badvaddr]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([HP-UX HPPA], sv_cv_fault_hpux_hppa, [hppa*-*-hpux11*], - [ -#define USE_64BIT_REGS(mc) \ - (((mc).ss_flags & SS_WIDEREGS) && ((mc).ss_flags & SS_NARROWISINVALID)) -#define GET_CR21(mc) \ - (USE_64BIT_REGS(mc) ? (mc).ss_wide.ss_64.ss_cr21 : (mc).ss_narrow.ss_cr21) -], - [int sig, int code, struct sigcontext *scp], - [GET_CR21 (scp->sc_sl.sl_ss)]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([OSF/1 Alpha], sv_cv_fault_osf_alpha, - [alpha*-*-osf[4-9]* | alpha*-*-linux2.[4-9]*], - [], - [int sig, int code, struct sigcontext *scp], - [scp->sc_traparg_a0]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([NetBSD Alpha], sv_cv_fault_netbsd_alpha, - [alpha*-*-osf[4-9]* | alpha-*-*bsd*], - [#include "$srcdir/src/fault-netbsd-alpha.c"], - [int sig, int code, struct sigcontext *scp], - [get_fault_addr (scp)]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([AIX], sv_cv_fault_aix, [*-*-aix[34]*], - [], - [int sig, int code, struct sigcontext *scp], - [scp->sc_jmpbuf.jmp_context.o_vaddr]) - -SV_TRY_FAULT([MacOSX/Darwin7 PowerPC], sv_cv_fault_macosdarwin7_ppc, - [powerpc-*-darwin7*], - [#include "$srcdir/src/fault-macosdarwin7-powerpc.c"], - [int sig, siginfo_t *sip, ucontext_t *ucp], - [get_fault_addr (sip, ucp)], - [action.sa_sigaction = &sigsegv_handler; - action.sa_flags = SA_SIGINFO;]) - -if test "$sv_cv_fault_macosdarwin7_ppc" != yes; then -SV_TRY_FAULT([MacOSX/Darwin5 PowerPC], sv_cv_fault_macosdarwin5_ppc, - [powerpc-*-darwin5*], - [#include "$srcdir/src/fault-macosdarwin5-powerpc.c"], - [int sig, int code, struct sigcontext *scp], - [get_fault_addr (scp)]) -fi - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_FAULT([Hurd], sv_cv_fault_hurd, [], - [], - [int sig, int code, struct sigcontext *scp], - [code]) - -# End of MacOS X special casing. - ;; -esac - -dnl Now determine the fault handler include file. -dnl We prefer the platform specific include files to the generic fault-posix.h -dnl because the former often defines SIGSEGV_FAULT_STACKPOINTER. -dnl Also we put the BSD test second-to-last, because the test may produce -dnl false positives. -CFG_HANDLER= -CFG_FAULT= -CFG_MACHFAULT= -FAULT_CONTEXT=void -FAULT_CONTEXT_INCLUDE= -dnl -dnl First the cases where the OS provides the fault address. -dnl -if test -z "$CFG_FAULT" && test "$sv_cv_fault_aix" = yes; then - case "$host_cpu" in - powerpc* | rs6000) CFG_FAULT=fault-aix3-powerpc.h ;; - *) CFG_FAULT=fault-aix3.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_irix" = yes; then - case "$host_cpu" in - mips*) CFG_FAULT=fault-irix-mips.h ;; - *) CFG_FAULT=fault-irix.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_hpux_hppa" = yes; then - case "$host_cpu" in - hppa* | parisc*) CFG_FAULT=fault-hpux-hppa.h ;; - *) CFG_FAULT=fault-hpux.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_osf_alpha" = yes; then - case "$host_cpu" in - alpha*) CFG_FAULT=fault-osf-alpha.h ;; - *) CFG_FAULT=fault-osf.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_netbsd_alpha" = yes; then - case "$host_cpu" in - alpha*) CFG_FAULT=fault-netbsd-alpha.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_linux_i386" = yes; then - case "$host_cpu" in - i?86 | x86_64) CFG_FAULT=fault-linux-i386.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_linux_i386_old" = yes; then - case "$host_cpu" in - i?86 | x86_64) CFG_FAULT=fault-linux-i386-old.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_linux_powerpc" = yes; then - case "$host_cpu" in - powerpc* | rs6000) CFG_FAULT=fault-linux-powerpc.h ;; - esac - FAULT_CONTEXT='struct sigcontext' -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_linux_hppa" = yes; then - case "$host_cpu" in - hppa* | parisc*) CFG_FAULT=fault-linux-hppa.h ;; - esac -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_hurd" = yes; then - case "$host_os" in - netbsd*) # A false positive. - ;; - *) - CFG_FAULT=fault-hurd.h - FAULT_CONTEXT='struct sigcontext' - ;; - esac -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_bsd" = yes; then - case "$host_os" in - freebsd* | dragonfly* | kfreebsd*) - case "$host_cpu" in - i?86 | x86_64) - CFG_FAULT=fault-freebsd-i386.h - FAULT_CONTEXT='struct sigcontext' - ;; - *) - CFG_FAULT=fault-bsd.h - FAULT_CONTEXT='void' - ;; - esac - ;; - *) - CFG_FAULT=fault-bsd.h - FAULT_CONTEXT='void' - ;; - esac -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_posix" = yes; then - case "$host_os" in - openbsd*) - case "$host_cpu" in - i?86 | x86_64) CFG_FAULT=fault-openbsd-i386.h ;; - *) CFG_FAULT=fault-openbsd.h ;; - esac - FAULT_CONTEXT='struct sigcontext' - ;; - mirbsd*) - case "$host_cpu" in - i?86 | x86_64) - CFG_FAULT=fault-openbsd-i386.h - FAULT_CONTEXT='struct sigcontext' - ;; - esac - ;; - linux*) - case "$host_cpu" in - ia64) - CFG_FAULT=fault-linux-ia64.h - FAULT_CONTEXT='struct sigcontext' - ;; - esac - ;; - esac - if test -z "$CFG_FAULT"; then - dnl <ucontext.h> was required by POSIX:2001, and many systems have it. But - dnl POSIX:2008 does not require it any more, and MirBSD does not have it. - AC_CHECK_HEADERS([ucontext.h]) - if test $ac_cv_header_ucontext_h = yes; then - case "$host_os" in - solaris*) - case "$host_cpu" in - i?86 | x86_64) CFG_FAULT=fault-solaris-i386.h ;; - sparc*) CFG_FAULT=fault-solaris-sparc.h ;; - *) CFG_FAULT=fault-solaris.h ;; - esac - ;; - aix*) - case "$host_cpu" in - powerpc* | rs6000) CFG_FAULT=fault-aix5-powerpc.h ;; - *) CFG_FAULT=fault-aix5.h ;; - esac - ;; - netbsd*) - CFG_FAULT=fault-netbsd.h - ;; - *) - CFG_FAULT=fault-posix-ucontext.h - ;; - esac - FAULT_CONTEXT='ucontext_t' - FAULT_CONTEXT_INCLUDE='#include <ucontext.h>' - else - CFG_FAULT=fault-posix.h - FAULT_CONTEXT='void' - fi - fi -fi -if test -z "$CFG_FAULT"; then - case "$host_os" in - macos* | darwin[[6-9]]* | darwin[[1-9]][[0-9]]*) - case "$host_cpu" in - powerpc* | rs6000 | i?86 | x86_64) - CFG_MACHFAULT=machfault-macos.h - FAULT_CONTEXT_INCLUDE='#include <signal.h> -#include <mach/thread_status.h> -#if defined __ppc64__ -#define sigsegv_thread_state_t ppc_thread_state64_t -#elif defined __ppc__ -#define sigsegv_thread_state_t ppc_thread_state_t -#endif -#if defined __x86_64__ -#define sigsegv_thread_state_t x86_thread_state64_t -#elif defined __i386__ -#if defined x86_THREAD_STATE32 -#define sigsegv_thread_state_t x86_thread_state32_t -#else -#define sigsegv_thread_state_t i386_thread_state_t -#endif -#endif' - FAULT_CONTEXT='sigsegv_thread_state_t' - ;; - esac - if test -n "$CFG_MACHFAULT"; then - CFG_HANDLER=handler-macos.c - CFG_FAULT=fault-macos.h # nonexistent, just a dummy - fi - ;; - esac -fi -dnl -dnl Next, the cases where there is a hairy CPU dependent way to get the -dnl fault address. -dnl -if test -z "$CFG_FAULT" && test "$sv_cv_fault_linux_m68k" = yes; then - case "$host_cpu" in - m68*) - CFG_FAULT=fault-linux-m68k.h - FAULT_CONTEXT='struct sigcontext' - ;; - esac -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_macosdarwin7_ppc" = yes; then - case "$host_cpu" in - powerpc* | rs6000) - CFG_FAULT=fault-macosdarwin7-powerpc.h - FAULT_CONTEXT='ucontext_t' - FAULT_CONTEXT_INCLUDE='#include <signal.h> -#include <ucontext.h>' - ;; - esac -fi -if test -z "$CFG_FAULT" && test "$sv_cv_fault_macosdarwin5_ppc" = yes; then - case "$host_cpu" in - powerpc* | rs6000) - CFG_FAULT=fault-macosdarwin5-powerpc.h - FAULT_CONTEXT='struct sigcontext' - ;; - esac -fi -if test -z "$CFG_FAULT"; then - case "$host_os" in - mingw* | cygwin*) - FAULT_CONTEXT='CONTEXT' - FAULT_CONTEXT_INCLUDE='#include <windows.h>' - CFG_FAULT=fault-win32.h # nonexistent, just a dummy - ;; - esac -fi -if test -n "$CFG_FAULT"; then - sv_cv_have_sigsegv_recovery=yes -else - sv_cv_have_sigsegv_recovery=no - dnl - dnl No way to get the fault address. But other information is available. - dnl - case "$host_os" in - linux*) - case "$host_cpu" in - alpha*) - CFG_FAULT=fault-linux-alpha.h - FAULT_CONTEXT='struct sigcontext' - ;; - arm* | strongarm* | xscale*) - CFG_FAULT=fault-linux-arm.h - FAULT_CONTEXT='struct sigcontext' - ;; - cris) - CFG_FAULT=fault-linux-cris.h - FAULT_CONTEXT='struct sigcontext' - ;; - mips*) - CFG_FAULT=fault-linux-mips.h - FAULT_CONTEXT='struct sigcontext' - ;; - s390*) - CFG_FAULT=fault-linux-s390.h - FAULT_CONTEXT='struct sigcontext' - ;; - sh*) - CFG_FAULT=fault-linux-sh.h - FAULT_CONTEXT='struct sigcontext' - ;; - sparc*) - CFG_FAULT=fault-linux-sparc.h - FAULT_CONTEXT='struct sigcontext' - ;; - x86_64) - CFG_FAULT=fault-linux-x86_64.h - FAULT_CONTEXT='struct sigcontext' - ;; - esac - ;; - beos*) - case "$host_cpu" in - i?86 | x86_64) CFG_FAULT=fault-beos-i386.h ;; - *) CFG_FAULT=fault-beos.h ;; - esac - FAULT_CONTEXT='struct vregs' - ;; - macos* | darwin*) - case "$host_cpu" in - i?86 | x86_64) CFG_FAULT=fault-macos-i386.h ;; - esac - FAULT_CONTEXT='struct sigcontext' - ;; - esac -fi -AC_MSG_CHECKING([for the fault handler specifics]) -if test -n "$CFG_FAULT"; then - sv_cv_fault_include=$CFG_FAULT -else - if test -n "$CFG_MACHFAULT"; then - sv_cv_fault_include=$CFG_MACHFAULT - else - sv_cv_fault_include=none - fi -fi -AC_MSG_RESULT([$sv_cv_fault_include]) -if test -z "$CFG_FAULT"; then - CFG_FAULT=fault-none.h -fi -AC_DEFINE_UNQUOTED([CFG_FAULT], ["$CFG_FAULT"], - [The name of the include file describing the fault handler.]) -if test -z "$CFG_MACHFAULT"; then - CFG_MACHFAULT=fault-none.h -fi -AC_DEFINE_UNQUOTED([CFG_MACHFAULT], ["$CFG_MACHFAULT"], - [The name of the include file describing the Mach fault handler.]) -AC_SUBST([FAULT_CONTEXT]) -AC_SUBST([FAULT_CONTEXT_INCLUDE]) -dnl AM_SUBST_NOTMAKE, because FAULT_CONTEXT_INCLUDE may have a multiline value. -AM_SUBST_NOTMAKE([FAULT_CONTEXT_INCLUDE]) - -AC_MSG_CHECKING([if the system supports catching SIGSEGV]) -AC_MSG_RESULT([$sv_cv_have_sigsegv_recovery]) -if test $sv_cv_have_sigsegv_recovery != no; then - HAVE_SIGSEGV_RECOVERY=1 -else - HAVE_SIGSEGV_RECOVERY=0 -fi -AC_SUBST([HAVE_SIGSEGV_RECOVERY]) - -dnl The stackoverflow_context_t type depends on the CFG_FAULT include file. - -dnl Stack direction. -AC_CACHE_CHECK([for stack direction], sv_cv_stack_direction_msg, [ - case "$host_cpu" in - dnl See the #define STACK_GROWS_DOWNWARD in gcc-3.1/gcc/config/*/*.h. - a29k | \ - alpha* | \ - arc | \ - arm* | strongarm* | xscale* | \ - avr | \ - c1 | c2 | c32 | c34 | c38 | \ - clipper | \ - cris | \ - d30v | \ - elxsi | \ - fr30 | \ - h8300 | \ - i?86 | x86_64 | \ - i860 | \ - ia64 | \ - m32r | \ - m68* | \ - m88k | \ - mcore | \ - mips* | \ - mmix | \ - mn10200 | \ - mn10300 | \ - ns32k | \ - pdp11 | \ - pj* | \ - powerpc* | rs6000 | \ - romp | \ - s390* | \ - sh* | \ - sparc* | \ - v850 | \ - vax | \ - xtensa) - sv_cv_stack_direction=-1 ;; - c4x | \ - dsp16xx | \ - i960 | \ - hppa* | parisc* | \ - stormy16 | \ - we32k) - sv_cv_stack_direction=1 ;; - *) - if test $cross_compiling = no; then - cat > conftest.c <<EOF -#include <stdio.h> -int -get_stack_direction () -{ - auto char dummy; - static char *dummyaddr = (char *)0; - if (dummyaddr != (char *)0) - return &dummy > dummyaddr ? 1 : &dummy < dummyaddr ? -1 : 0; - else - { - dummyaddr = &dummy; - { - int result = get_stack_direction (); - /* The next assignment avoids tail recursion elimination - (IRIX 6.4 CC). */ - dummyaddr = (char *)0; - return result; - } - } -} -int -main () -{ - printf ("%d\n", get_stack_direction ()); - return 0; -} -EOF - AC_TRY_EVAL([ac_link]) - sv_cv_stack_direction=`./conftest` - else - sv_cv_stack_direction=0 - fi - ;; - esac - case $sv_cv_stack_direction in - 1) sv_cv_stack_direction_msg="grows up";; - -1) sv_cv_stack_direction_msg="grows down";; - *) sv_cv_stack_direction_msg="unknown";; - esac -]) -AC_DEFINE_UNQUOTED([STACK_DIRECTION], [$sv_cv_stack_direction], - [Define as the direction of stack growth for your system. - STACK_DIRECTION > 0 => grows toward higher addresses - STACK_DIRECTION < 0 => grows toward lower addresses - STACK_DIRECTION = 0 => spaghetti stack.]) - -dnl Determination of the stack's virtual memory area. -AC_CACHE_CHECK([for PIOCMAP in sys/procfs.h], [sv_cv_procfsvma], [ - AC_TRY_LINK([#include <sys/procfs.h>], - [int x = PIOCNMAP + PIOCMAP; prmap_t y;], - [sv_cv_procfsvma=yes], [sv_cv_procfsvma=no]) -]) -AC_CHECK_FUNCS([mincore]) -CFG_STACKVMA= -if test $sv_cv_procfsvma = yes; then - CFG_STACKVMA=stackvma-procfs.c -else - case "$host_os" in - linux*) CFG_STACKVMA=stackvma-linux.c ;; - freebsd* | dragonfly*) CFG_STACKVMA=stackvma-freebsd.c ;; - beos*) CFG_STACKVMA=stackvma-beos.c ;; - macos* | darwin*) CFG_STACKVMA=stackvma-mach.c ;; - esac -fi -if test -z "$CFG_STACKVMA" && test $ac_cv_func_mincore = yes; then - CFG_STACKVMA=stackvma-mincore.c -fi -if test -n "$CFG_STACKVMA"; then - AC_DEFINE([HAVE_STACKVMA], [1], - [Define if CFG_STACKVMA is set to a nontrivial source file.]) -else - CFG_STACKVMA=stackvma-none.c -fi -AC_DEFINE_UNQUOTED([CFG_STACKVMA], ["$CFG_STACKVMA"], - [The name of the file determining the stack virtual memory area.]) -AC_SUBST([CFG_STACKVMA]) - -AC_CHECK_FUNCS([getrlimit setrlimit]) - -dnl Catching stack overflow requires an alternate signal stack. -dnl The old "install a guard page" trick would be unreliable, because -dnl we don't know where exactly to place the guard page. -SV_SIGALTSTACK - -AC_CACHE_CHECK([if the system supports catching stack overflow], - [sv_cv_have_stack_overflow_recovery], -[ - dnl On Mach, it requires a machfault-*.h (see src/handler-macos.c). - dnl On Unix, it requires either sigaltstack() or the BeOS set_signal_stack() - dnl function, and on Unix it requires a fault-*.h or a stackvma-*.c with - dnl certain properties (see src/handler-unix.c). - if test "$CFG_MACHFAULT" != fault-none.h; then - sv_cv_have_stack_overflow_recovery=yes - else - if test "$sv_cv_sigaltstack" != no; then - sv_cv_have_stack_overflow_recovery=maybe - else - case "$host_os" in - beos*) sv_cv_have_stack_overflow_recovery=maybe ;; - mingw* | cygwin*) sv_cv_have_stack_overflow_recovery=yes ;; - *) sv_cv_have_stack_overflow_recovery=no ;; - esac - fi - fi - if test $sv_cv_have_stack_overflow_recovery = maybe; then - if test -n "$CFG_FAULT"; then - AC_EGREP_CPP([xyzzy], [ -#include "$srcdir/src/$CFG_FAULT" -#ifdef SIGSEGV_FAULT_HANDLER_ARGLIST -#ifdef SIGSEGV_FAULT_ADDRESS -xyzzy -#endif -#endif -], [condA=true], [condA=false]) - else - condA=false - fi - if test -n "$CFG_FAULT"; then - AC_EGREP_CPP([xyzzy], [ -#include "$srcdir/src/$CFG_FAULT" -#ifdef SIGSEGV_FAULT_HANDLER_ARGLIST -#ifdef SIGSEGV_FAULT_STACKPOINTER -xyzzy -#endif -#endif -], [condB=true], [condB=false]) - else - condB=false - fi - if test "$CFG_STACKVMA" != "stackvma-none.c"; then - condC=true - else - condC=false - fi - if { $condA && $condB; } || { $condA && $condC; } || { $condB && $condC; }; then - sv_cv_have_stack_overflow_recovery=yes - else - sv_cv_have_stack_overflow_recovery=no - fi - fi -]) -if test $sv_cv_have_stack_overflow_recovery != no; then - HAVE_STACK_OVERFLOW_RECOVERY=1 -else - HAVE_STACK_OVERFLOW_RECOVERY=0 -fi -AC_SUBST([HAVE_STACK_OVERFLOW_RECOVERY]) - -# How to longjmp out of a signal handler, in such a way that the -# alternate signal stack remains functional. - -# On MacOS X 10.2 or newer, we don't need these tests, because we'll end up -# using handler-macos.c anyway. If we were to perform the tests, 2 Crash Report -# dialog windows would pop up. -case "$host_os" in - macos* | darwin[[6-9]]* | darwin[[1-9]][[0-9]]*) ;; - *) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_LEAVE_HANDLER_LONGJMP([], sv_cv_leave_handler_longjmp, - [*-*-osf[4-9]* | *-*-hpux11* | *-*-linux2.[2-9]*], - [], []) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_LEAVE_HANDLER_LONGJMP([ and sigaltstack], - sv_cv_leave_handler_longjmp_sigaltstack, - [*-*-freebsd*], - [ -#ifndef SS_ONSTACK -#define SS_ONSTACK SA_ONSTACK -#endif - ], - [stack_t ss; - if (sigaltstack (NULL, &ss) >= 0) - { - ss.ss_flags &= ~SS_ONSTACK; - sigaltstack (&ss, NULL); - } - ]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_LEAVE_HANDLER_LONGJMP([ and setcontext], - sv_cv_leave_handler_longjmp_setcontext, - [*-*-irix* | *-*-solaris*], - [#include <ucontext.h> -#ifndef SS_ONSTACK -#define SS_ONSTACK SA_ONSTACK -#endif - ], - [static int fl; - static ucontext_t uc; - fl = 0; - if (getcontext (&uc) >= 0) - if (fl == 0) - if (uc.uc_stack.ss_flags & SS_ONSTACK) - { - uc.uc_stack.ss_flags &= ~SS_ONSTACK; - fl = 1; - setcontext (&uc); - } - ]) - -# End of MacOS X special casing. - ;; -esac - -# How to siglongjmp out of a signal handler, in such a way that the -# alternate signal stack remains functional. - -# On MacOS X 10.2 or newer, we don't need these tests, because we'll end up -# using handler-macos.c anyway. If we were to perform the tests, 2 Crash Report -# dialog windows would pop up. -case "$host_os" in - macos* | darwin[[6-9]]* | darwin[[1-9]][[0-9]]*) ;; - *) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_LEAVE_HANDLER_SIGLONGJMP([], sv_cv_leave_handler_siglongjmp, - [*-*-osf[4-9]* | *-*-hpux11* | *-*-linux2.[2-9]* | *-*-irix* | *-*-solaris*], - [], []) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_LEAVE_HANDLER_SIGLONGJMP([ and sigaltstack], - sv_cv_leave_handler_siglongjmp_sigaltstack, - [*-*-freebsd*], - [ -#ifndef SS_ONSTACK -#define SS_ONSTACK SA_ONSTACK -#endif - ], - [stack_t ss; - if (sigaltstack (NULL, &ss) >= 0) - { - ss.ss_flags &= ~SS_ONSTACK; - sigaltstack (&ss, NULL); - } - ]) - -dnl FIXME: Put in some more known values into the third argument. -SV_TRY_LEAVE_HANDLER_SIGLONGJMP([ and setcontext], - sv_cv_leave_handler_siglongjmp_setcontext, - [], - [#include <ucontext.h> -#ifndef SS_ONSTACK -#define SS_ONSTACK SA_ONSTACK -#endif - ], - [static int fl; - static ucontext_t uc; - fl = 0; - if (getcontext(&uc) >= 0) - if (fl == 0) - if (uc.uc_stack.ss_flags & SS_ONSTACK) - { - uc.uc_stack.ss_flags &= ~SS_ONSTACK; - fl = 1; - setcontext(&uc); - } - ]) - -# End of MacOS X special casing. - ;; -esac - -CFG_LEAVE= -if test "$sv_cv_leave_handler_longjmp" != no; then - CFG_LEAVE=leave-nop.c -else - if test "$sv_cv_leave_handler_longjmp_sigaltstack" != no; then - CFG_LEAVE=leave-sigaltstack.c - else - if test "$sv_cv_leave_handler_longjmp_setcontext" != no; then - CFG_LEAVE=leave-setcontext.c - fi - fi -fi -case "$host_os" in - # On BeOS, the 6 tests fail because sigaltstack() doesn't exist. - # If one uses set_signal_stack() instead of sigaltstack(), the first - # test actually works. i.e. sv_cv_leave_handler_longjmp would be 'yes'. - beos*) CFG_LEAVE=leave-nop.c ;; -esac -if test -z "$CFG_LEAVE"; then - CFG_LEAVE=leave-none.c -fi -AC_DEFINE_UNQUOTED([CFG_LEAVE], ["$CFG_LEAVE"], - [The name of the file implementing sigsegv_reset_onstack_flag.]) -AC_SUBST([CFG_LEAVE]) - -case "$host_os" in - mingw* | cygwin*) CFG_HANDLER=handler-win32.c ;; - *) - if test -z "$CFG_HANDLER"; then - if test $sv_cv_have_sigsegv_recovery = no \ - && test $sv_cv_have_stack_overflow_recovery = no; then - CFG_HANDLER=handler-none.c - else - CFG_HANDLER=handler-unix.c - fi - fi - ;; -esac -AC_DEFINE_UNQUOTED([CFG_HANDLER], ["$CFG_HANDLER"], - [The name of the file implementing the handler functionality.]) -AC_SUBST([CFG_HANDLER]) - -{ echo; echo "${term_bold}Build Parameters:${term_norm}"; } >& AS_MESSAGE_FD - -dnl Relocatability is a nop for this package. -AC_RELOCATABLE_NOP - -{ echo; echo "${term_bold}Output Substitution:${term_norm}"; } >& AS_MESSAGE_FD - -dnl AC_OUTPUT([Makefile]) -AC_OUTPUT([Makefile - src/Makefile src/sigsegv.h - tests/Makefile]) - -{ echo; echo "Now please type '${term_bold}make${term_norm}' to compile. Good luck."; echo; } >& AS_MESSAGE_FD |