76 lines
1.7 KiB
Diff
76 lines
1.7 KiB
Diff
From 3f6c6d44472a5ccab0403ebf89fc59e7df58b6b2 Mon Sep 17 00:00:00 2001
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From: Natanael Copa <ncopa@alpinelinux.org>
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Date: Thu, 28 Sep 2017 10:28:42 +0000
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Subject: [PATCH] Fix building with or without backtrace(3)
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backtrace(3) and execinfo.h are GNU extensions and may or may not be
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available, and they may be provided via libexecinfo.
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Fix detection of libexecinfo and allow building without any support of
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backtrace, in which case we let kernel create core dump.
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Fixes #116 #117
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---
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configure.ac | 5 +++++
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tmate-debug.c | 10 ++++++++++
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2 files changed, 15 insertions(+)
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diff --git configure.ac configure.ac
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index 02d2872..05c1c48 100644
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--- configure.ac
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+++ configure.ac
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@@ -102,6 +102,7 @@ AC_CHECK_HEADERS(
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bitstring.h \
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curses.h \
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dirent.h \
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+ execinfo.h \
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fcntl.h \
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inttypes.h \
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libutil.h \
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@@ -121,9 +122,13 @@ AC_CHECK_HEADERS(
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# Look for library needed for flock.
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AC_SEARCH_LIBS(flock, bsd)
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+# Look for library needed for backtrace
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+AC_SEARCH_LIBS(backtrace, execinfo)
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+
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# Check for some functions that are replaced or omitted.
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AC_CHECK_FUNCS(
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[ \
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+ backtrace \
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dirfd \
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flock \
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setproctitle \
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diff --git tmate-debug.c tmate-debug.c
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index f1fd971..f58efe0 100644
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--- tmate-debug.c
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+++ tmate-debug.c
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@@ -1,10 +1,19 @@
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+#ifdef HAVE_EXECINFO_H
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#include <execinfo.h>
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+#endif
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#include <stdio.h>
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#include <stdlib.h>
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#include <regex.h>
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#include <signal.h>
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#include "tmate.h"
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+#ifndef HAVE_BACKTRACE
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+
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+void tmate_print_stack_trace(void) {}
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+void tmate_catch_sigsegv(void) {}
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+
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+#else
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+
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#if DEBUG
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static int print_resolved_stack_frame(const char *frame)
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@@ -88,3 +97,4 @@ void tmate_catch_sigsegv(void)
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{
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signal(SIGSEGV, handle_sigsegv);
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}
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+#endif
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--
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2.7.4
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