• Home
  • Line#
  • Scopes#
  • Navigate#
  • Raw
  • Download
1#!/usr/bin/m4
2#
3# Copyright (c) 2018 The strace developers.
4# All rights reserved.
5#
6# Redistribution and use in source and binary forms, with or without
7# modification, are permitted provided that the following conditions
8# are met:
9# 1. Redistributions of source code must retain the above copyright
10#    notice, this list of conditions and the following disclaimer.
11# 2. Redistributions in binary form must reproduce the above copyright
12#    notice, this list of conditions and the following disclaimer in the
13#    documentation and/or other materials provided with the distribution.
14# 3. The name of the author may not be used to endorse or promote products
15#    derived from this software without specific prior written permission.
16#
17# THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
18# IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
19# OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
20# IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
21# INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
22# NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
23# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
24# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
25# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
26# THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
27
28AC_DEFUN([st_STACKTRACE], [dnl
29
30AC_ARG_ENABLE([stacktrace],
31	[AS_HELP_STRING([--enable-stacktrace=yes|no|check],
32		[whether to enable stack tracing support, default is check])],
33	[case "$enableval" in
34		yes|no|check) enable_stacktrace="$enableval" ;;
35		*) AC_MSG_ERROR([bad value $enableval for enable-stacktrace option.
36				 Valid options are: yes, no, check.])
37		;;
38	 esac],
39	[enable_stacktrace=check])
40
41use_unwinder=
42dnl Whether to enable stack tracing support?
43
44AS_IF([test x"$enable_stacktrace" != xno],
45      [st_ARG_LIBDW
46       st_ARG_LIBUNWIND
47       AS_IF([test "x$with_libdw" = xyes && test "x$with_libunwind" = xyes],
48	     [AC_MSG_ERROR([--with-libdw=yes and --with-libunwind=yes are mutually exclusive])],
49	     [test "x$with_libdw" = xyes], [with_libunwind=no],
50	     [test "x$with_libunwind" = xyes], [with_libdw=no]
51	    )
52       AS_IF([test "x$use_unwinder" = x], [st_LIBDW])
53       AS_IF([test "x$use_unwinder" = x], [st_LIBUNWIND])
54       AS_IF([test x"$enable_stacktrace$use_unwinder" = xyes],
55	     [AC_MSG_ERROR([stack tracing support requires an unwinder])]
56	    )
57      ]
58     )
59
60AC_MSG_CHECKING([whether to enable stack tracing support])
61AM_CONDITIONAL([ENABLE_STACKTRACE], [test "x$use_unwinder" != x])
62AM_CONDITIONAL([USE_LIBDW], [test "x$use_unwinder" = xlibdw])
63AM_CONDITIONAL([USE_LIBUNWIND], [test "x$use_unwinder" = xlibunwind])
64
65use_libiberty=
66AS_IF([test "x$use_unwinder" != x],
67      [AC_DEFINE([ENABLE_STACKTRACE], [1],
68			  [Define to enable stack tracing support])
69       AC_DEFINE_UNQUOTED([USE_UNWINDER], ["$use_unwinder"],
70			  [The unwinder to use for stack tracing support])
71       AC_MSG_RESULT([yes, using $use_unwinder])
72       dnl As stack tracing support is enabled, check for a demangler.
73       st_DEMANGLE],
74      [AC_MSG_RESULT([no])])
75
76AM_CONDITIONAL([USE_DEMANGLE], [test "x$use_libiberty" = xyes])
77
78])
79