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Annotation of embedaddon/libiconv/srcm4/signal_h.m4, revision 1.1.1.2

1.1.1.2 ! misho       1: # signal_h.m4 serial 16
        !             2: dnl Copyright (C) 2007-2011 Free Software Foundation, Inc.
1.1       misho       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])
1.1.1.2 ! misho      10:   AC_REQUIRE([gl_CHECK_TYPE_SIGSET_T])
        !            11:   gl_NEXT_HEADERS([signal.h])
        !            12: 
1.1       misho      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:     ]])
1.1.1.2 ! misho      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
1.1       misho      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])
1.1.1.2 ! misho      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])
1.1       misho      57: ])
                     58: 
                     59: AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
                     60: [
1.1.1.2 ! misho      61:   GNULIB_PTHREAD_SIGMASK=0;    AC_SUBST([GNULIB_PTHREAD_SIGMASK])
1.1       misho      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])
1.1.1.2 ! misho      67:   HAVE_PTHREAD_SIGMASK=1;      AC_SUBST([HAVE_PTHREAD_SIGMASK])
1.1       misho      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])
1.1.1.2 ! misho      75:   HAVE_SIGHANDLER_T=1;         AC_SUBST([HAVE_SIGHANDLER_T])
        !            76:   REPLACE_PTHREAD_SIGMASK=0;   AC_SUBST([REPLACE_PTHREAD_SIGMASK])
1.1       misho      77: ])