1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
|
# libsigsegv.m4 serial 2
dnl Copyright (C) 2002-2003, 2008 Free Software Foundation, Inc.
dnl This file is free software; the Free Software Foundation
dnl gives unlimited permission to copy and/or distribute it,
dnl with or without modifications, as long as this notice is preserved.
dnl From Bruno Haible, Sam Steingold.
AC_DEFUN([gl_LIBSIGSEGV],
[
dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
AC_REQUIRE([AC_LIB_RPATH])
dnl Search for libsigsegv and define LIBSIGSEGV, LTLIBSIGSEGV and INCSIGSEGV
dnl accordingly.
AC_LIB_LINKFLAGS_BODY([sigsegv])
dnl Add $INCSIGSEGV to CPPFLAGS before performing the following checks,
dnl because if the user has installed libsigsegv and not disabled its use
dnl via --without-libsigsegv-prefix, he wants to use it.
gl_save_CPPFLAGS="$CPPFLAGS"
AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCSIGSEGV])
AC_CACHE_CHECK([for libsigsegv], gl_cv_lib_sigsegv, [
gl_cv_lib_sigsegv="no, consider installing GNU libsigsegv"
gl_save_LIBS="$LIBS"
LIBS="$LIBS $LIBSIGSEGV"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sigsegv.h>]],
[sigsegv_deinstall_handler();])],
[gl_cv_lib_sigsegv=yes])
LIBS="$gl_save_LIBS"
])
if test "$gl_cv_lib_sigsegv" = yes; then
AC_DEFINE([HAVE_LIBSIGSEGV], 1,
[Define if you have the libsigsegv library.])
AC_MSG_CHECKING([how to link with libsigsegv])
AC_MSG_RESULT([$LIBSIGSEGV])
else
dnl If $LIBSIGSEGV didn't lead to a usable library, we don't need
dnl $INCSIGSEGV either.
CPPFLAGS="$gl_save_CPPFLAGS"
LIBSIGSEGV=
LTLIBSIGSEGV=
fi
AC_SUBST(LIBSIGSEGV)
AC_SUBST(LTLIBSIGSEGV)
])
|
