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libiconv

    1: # signal_h.m4 serial 7
    2: dnl Copyright (C) 2007, 2008, 2009 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:   gl_CHECK_NEXT_HEADERS([signal.h])
   11: # AIX declares sig_atomic_t to already include volatile, and C89 compilers
   12: # then choke on 'volatile sig_atomic_t'.  C99 requires that it compile.
   13:   AC_CHECK_TYPE([volatile sig_atomic_t], [],
   14:     [HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=0], [[
   15: #include <signal.h>
   16:     ]])
   17: ])
   18: 
   19: AC_DEFUN([gl_SIGNAL_MODULE_INDICATOR],
   20: [
   21:   dnl Use AC_REQUIRE here, so that the default settings are expanded once only.
   22:   AC_REQUIRE([gl_SIGNAL_H_DEFAULTS])
   23:   GNULIB_[]m4_translit([$1],[abcdefghijklmnopqrstuvwxyz./-],[ABCDEFGHIJKLMNOPQRSTUVWXYZ___])=1
   24: ])
   25: 
   26: AC_DEFUN([gl_SIGNAL_H_DEFAULTS],
   27: [
   28:   GNULIB_SIGNAL_H_SIGPIPE=0;   AC_SUBST([GNULIB_SIGNAL_H_SIGPIPE])
   29:   GNULIB_SIGPROCMASK=0;        AC_SUBST([GNULIB_SIGPROCMASK])
   30:   GNULIB_SIGACTION=0;          AC_SUBST([GNULIB_SIGACTION])
   31:   dnl Assume proper GNU behavior unless another module says otherwise.
   32:   HAVE_POSIX_SIGNALBLOCKING=1; AC_SUBST([HAVE_POSIX_SIGNALBLOCKING])
   33:   HAVE_SIGSET_T=1;             AC_SUBST([HAVE_SIGSET_T])
   34:   HAVE_SIGINFO_T=1;            AC_SUBST([HAVE_SIGINFO_T])
   35:   HAVE_SIGACTION=1;            AC_SUBST([HAVE_SIGACTION])
   36:   HAVE_STRUCT_SIGACTION_SA_SIGACTION=1;
   37:                                AC_SUBST([HAVE_STRUCT_SIGACTION_SA_SIGACTION])
   38:   HAVE_TYPE_VOLATILE_SIG_ATOMIC_T=1;
   39:                                AC_SUBST([HAVE_TYPE_VOLATILE_SIG_ATOMIC_T])
   40: ])