vasilito
facf0c92e0
Red Bear OS is a full fork. All sources must be available from git clone with zero network access. Removed gitignore rules that excluded fetched source trees under recipes/*/source/, local/recipes/kde/*/source/, local/recipes/qt/*/source/, and vendor source trees. Build artifacts (target/, build/, source.tar, *.o, *.so) remain excluded. 127291 files added — kernel, relibc, base, bootloader, pkgar, all KDE/Qt frameworks, mesa, wayland, DRM drivers, and every other recipe source.
54 lines
2.3 KiB
Plaintext
54 lines
2.3 KiB
Plaintext
# siginfo.m4 serial 2 (gettext-0.21.1)
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dnl Copyright (C) 2001-2002, 2020 Free Software Foundation, Inc.
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dnl This file is free software; the Free Software Foundation
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dnl gives unlimited permission to copy and/or distribute it,
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dnl with or without modifications, as long as this notice is preserved.
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# Determine how to determine the precise cause of a signal, for example
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# division by zero.
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# - SUSV2 and POSIX specify the use of sigaction with SA_SIGINFO and a member
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# void (*)(int sig, siginfo_t *info, void *context) sa_sigaction.
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# Linux (2.2.x and newer) and Solaris implement this.
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# Linux (2.4.x and newer) on i386, m68k, sparc, sparc64, ia64 actually
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# deliver FPE_INTDIV.
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# - Without SA_SIGINFO:
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# - Linux on m68k calls the handler as
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# void (*)(int sig, int code, struct sigcontext* scp).
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# For division by zero, code would be VEC_ZERODIV<<2.
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# - Linux on sparc calls the handler either as
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# void (*)(int sig, int code, struct sigcontext* scp),
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# code for division by zero would be SUBSIG_IDIVZERO, or as
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# void (*)(int sig, siginfo_t *info, void *context).
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# Which one depends on a process specific flag in the kernel.
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# - Linux on sparc64 always calls the handler as
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# void (*)(int sig, siginfo_t *info, void *context).
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# - FreeBSD on i386 calls the handler as
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# void (*)(int sig, int code, void* scp, char* addr).
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# For division by zero, code would be FPE_INTDIV.
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# - SunOS 4 calls the handler as
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# void (*)(int sig, int code, void* scp, char* addr).
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# - Solaris?
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# - Irix 5, OSF/1, AIX call the handler as
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# void (*)(int sig, int code, struct sigcontext *scp).
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# These are so many OS and CPU dependencies that we don't bother, and rely
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# only on SA_SIGINFO.
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AC_DEFUN([gt_SIGINFO],
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[
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AC_CACHE_CHECK([for signal handlers with siginfo_t], gt_cv_siginfo_t,
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[AC_COMPILE_IFELSE(
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[AC_LANG_PROGRAM(
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[[#include <signal.h>]],
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[[struct sigaction action;
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siginfo_t info;
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action.sa_flags = SA_SIGINFO;
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action.sa_sigaction = (void *) 0;
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]])],
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[gt_cv_siginfo_t=yes],
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[gt_cv_siginfo_t=no])])
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if test $gt_cv_siginfo_t = yes; then
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AC_DEFINE([HAVE_SIGINFO], [1],
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[Define to 1 if <signal.h> defines the siginfo_t type and
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struct sigaction has the sa_sigaction member and the SA_SIGINFO flag.])
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fi
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])
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