HCoop / bpt / emacs.git / blame
| Commit | Line | Data |
|---|---|---|
| 2a84b02d | 1 | # signal_h.m4 serial 16 |
| 6db30f83 PE |
2 | dnl Copyright (C) 2007-2011 Free Software Foundation, Inc. |
| 3 | dnl This file is free software; the Free Software Foundation | |
| 4 | dnl gives unlimited permission to copy and/or distribute it, | |
| 5 | dnl with or without modifications, as long as this notice is preserved. | |
| 6 | ||
| 7 | AC_DEFUN([gl_SIGNAL_H], | |
| 8 | [ | |
| 9 | AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) | |
| 10 | AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T]) | |
| 11 | gl_NEXT_HEADERS([signal.h]) | |
| 12 | ||
| 13 | # AIX declares sig_atomic_t to already include volatile, and C89 compilers | |
| 14 | # then choke on 'volatile sig_atomic_t'. C99 requires that it compile. | |
| 15 | AC_CHECK_TYPE([volatile sig_atomic_t], [], | |
| 16 | [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[ | |
| 17 | #include <signal.h> | |
| 18 | ]]) | |
| 19 | ||
| 20 | AC_REQUIRE([AC_TYPE_UID_T]) | |
| 21 | ||
| 22 | dnl Persuade glibc <signal.h> to define sighandler_t. | |
| 23 | AC_REQUIRE([AC_USE_SYSTEM_EXTENSIONS]) | |
| 24 | AC_CHECK_TYPE([sighandler_t], [], [HAVE_SIGHANDLER_T=0], [[ | |
| 25 | #include <signal.h> | |
| 26 | ]]) | |
| 27 | ||
| 28 | dnl Check for declarations of anything we want to poison if the | |
| 29 | dnl corresponding gnulib module is not in use. | |
| 30 | gl_WARN_ON_USE_PREPARE([[#include <signal.h> | |
| 31 | ]], [pthread_sigmask sigaction | |
| 32 | sigaddset sigdelset sigemptyset sigfillset sigismember | |
| 33 | sigpending sigprocmask]) | |
| 34 | ]) | |
| 35 | ||
| 36 | AC_DEFUN([gl_CHECK_TYPE_SIGSET_T], | |
| 37 | [ | |
| 38 | AC_CHECK_TYPES([sigset_t], | |
| 39 | [gl_cv_type_sigset_t=yes], [gl_cv_type_sigset_t=no], | |
| 40 | [[ | |
| 41 | #include <signal.h> | |
| 42 | /* Mingw defines sigset_t not in <signal.h>, but in <sys/types.h>. */ | |
| 43 | #include <sys/types.h> | |
| 44 | ]]) | |
| 45 | if test $gl_cv_type_sigset_t != yes; then | |
| 46 | HAVE_SIGSET_T=0 | |
| 47 | fi | |
| 48 | ]) | |
| 49 | ||
| 50 | AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR], | |
| 51 | [ | |
| 52 | dnl Use AC_REQUIRE here, so that the default settings are expanded once only. | |
| 53 | AC_REQUIRE([gl_SIGNAL_H_DEFAULTS]) | |
| 54 | gl_MODULE_INDICATOR_SET_VARIABLE([$1]) | |
| 55 | dnl Define it also as a C macro, for the benefit of the unit tests. | |
| 56 | gl_MODULE_INDICATOR_FOR_TESTS([$1]) | |
| 57 | ]) | |
| 58 | ||
| 59 | AC_DEFUN([gl_SIGNAL_H_DEFAULTS], | |
| 60 | [ | |
| 61 | GNULIB_PTHREAD_SIGMASK=0; AC_SUBST([GNULIB_PTHREAD_SIGMASK]) | |
| 62 | GNULIB_SIGNAL_H_SIGPIPE=0; AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE]) | |
| 63 | GNULIB_SIGPROCMASK=0; AC_SUBST([GNULIB_SIGPROCMASK]) | |
| 64 | GNULIB_SIGACTION=0; AC_SUBST([GNULIB_SIGACTION]) | |
| 65 | dnl Assume proper GNU behavior unless another module says otherwise. | |
| 66 | HAVE_POSIX_SIGNALBLOCKING=1; AC_SUBST([HAVE_POSIX_SIGNALBLOCKING]) | |
| 2a84b02d | 67 | HAVE_PTHREAD_SIGMASK=1; AC_SUBST([HAVE_PTHREAD_SIGMASK]) |
| 6db30f83 PE |
68 | HAVE_SIGSET_T=1; AC_SUBST([HAVE_SIGSET_T]) |
| 69 | HAVE_SIGINFO_T=1; AC_SUBST([HAVE_SIGINFO_T]) | |
| 70 | HAVE_SIGACTION=1; AC_SUBST([HAVE_SIGACTION]) | |
| 71 | HAVE_STRUCT_SIGACTION_SA_SIGACTION=1; | |
| 72 | AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION]) | |
| 73 | HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1; | |
| 74 | AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T]) | |
| 75 | HAVE_SIGHANDLER_T=1; AC_SUBST([HAVE_SIGHANDLER_T]) | |
| 76 | REPLACE_PTHREAD_SIGMASK=0; AC_SUBST([REPLACE_PTHREAD_SIGMASK]) | |
| 77 | ]) |