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49 lines
1.6 KiB
Plaintext
49 lines
1.6 KiB
Plaintext
# libsigsegv.m4 serial 3
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dnl Copyright (C) 2002-2003, 2008, 2009 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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dnl From Bruno Haible, Sam Steingold.
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AC_DEFUN([gl_LIBSIGSEGV],
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[
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dnl Prerequisites of AC_LIB_LINKFLAGS_BODY.
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AC_REQUIRE([AC_LIB_PREPARE_PREFIX])
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AC_REQUIRE([AC_LIB_RPATH])
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dnl Search for libsigsegv and define LIBSIGSEGV, LTLIBSIGSEGV and INCSIGSEGV
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dnl accordingly.
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AC_LIB_LINKFLAGS_BODY([sigsegv])
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dnl Add $INCSIGSEGV to CPPFLAGS before performing the following checks,
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dnl because if the user has installed libsigsegv and not disabled its use
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dnl via --without-libsigsegv-prefix, he wants to use it.
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gl_save_CPPFLAGS="$CPPFLAGS"
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AC_LIB_APPENDTOVAR([CPPFLAGS], [$INCSIGSEGV])
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AC_CACHE_CHECK([for libsigsegv], [gl_cv_lib_sigsegv], [
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gl_cv_lib_sigsegv="no, consider installing GNU libsigsegv"
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gl_save_LIBS="$LIBS"
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LIBS="$LIBS $LIBSIGSEGV"
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AC_LINK_IFELSE([AC_LANG_PROGRAM([[#include <sigsegv.h>]],
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[sigsegv_deinstall_handler();])],
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[gl_cv_lib_sigsegv=yes])
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LIBS="$gl_save_LIBS"
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])
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if test "$gl_cv_lib_sigsegv" = yes; then
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AC_DEFINE([HAVE_LIBSIGSEGV], [1],
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[Define if you have the libsigsegv library.])
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AC_MSG_CHECKING([how to link with libsigsegv])
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AC_MSG_RESULT([$LIBSIGSEGV])
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else
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dnl If $LIBSIGSEGV didn't lead to a usable library, we don't need
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dnl $INCSIGSEGV either.
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CPPFLAGS="$gl_save_CPPFLAGS"
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LIBSIGSEGV=
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LTLIBSIGSEGV=
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fi
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AC_SUBST([LIBSIGSEGV])
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AC_SUBST([LTLIBSIGSEGV])
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])
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