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List:       elinks-cvs
Subject:    [ELinks] elinks - pasky: Move backtrace printing support enabling ...
From:       cvs () pasky ! ji ! cz
Date:       2003-12-31 22:01:29
Message-ID: 20031231220129.9903.qmail () machine ! sinus ! cz
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This is an automated notification of a change to the ELinks CVS tree.

Author: pasky
Module: elinks
   Tag: <TRUNK>
  Date: Wed Dec 31 22:01:29 2003 GMT

---- Log message:

Move backtrace printing support enabling to feature.h.


---- Files affected:

elinks:
   acconfig.h (1.66 -> 1.67) 
    http://cvsweb.elinks.or.cz/cvsweb.cgi/elinks/acconfig.h.diff?r1=1.66&r2=1.67&f=u
   configure.in (1.324 -> 1.325) 
    http://cvsweb.elinks.or.cz/cvsweb.cgi/elinks/configure.in.diff?r1=1.324&r2=1.325&f=u
   feature.h (1.6 -> 1.7) 
    http://cvsweb.elinks.or.cz/cvsweb.cgi/elinks/feature.h.diff?r1=1.6&r2=1.7&f=u


---- Diffs:

Index: elinks/acconfig.h
diff -u elinks/acconfig.h:1.66 elinks/acconfig.h:1.67
--- elinks/acconfig.h:1.66	Wed Dec 31 22:31:49 2003
+++ elinks/acconfig.h	Wed Dec 31 23:01:24 2003
@@ -81,10 +81,6 @@
 /* Force use of internal functions instead of those of system libc */
 #undef USE_OWN_LIBC
 
-/* Define to 1 if we should include a generic backtrace printing infrastructure */
-/* (you will still need some support from the libc) */
-#undef BACKTRACE
-
 /* Enable forms memory */
 #undef FORMS_MEMORY
 
Index: elinks/configure.in
diff -u elinks/configure.in:1.324 elinks/configure.in:1.325
--- elinks/configure.in:1.324	Wed Dec 31 22:31:49 2003
+++ elinks/configure.in	Wed Dec 31 23:01:24 2003
@@ -782,31 +782,10 @@
 dnl Backtraces displaying support.
 dnl ===================================================================
 
-hm_enabled_backtrace="yes"
-hm_forced_backtrace="no"
-
-AC_ARG_ENABLE(backtrace, [  --disable-backtrace     disable displaying of backtrace upon crash],
-              [if test "$enableval" = yes; then
-                 hm_forced_backtrace="yes"
-               else
-                 hm_enabled_backtrace="no"
-               fi])
-
-AC_MSG_CHECKING(for backtrace displaying support)
-
-if test "x$hm_enabled_backtrace" = "xyes"; then
-	AC_MSG_RESULT(enabled)
-	AC_CHECK_HEADERS(execinfo.h, have_execinfo=yes, have_execinfo=no)
-	# possible checks for other system-specific means go here
-	if test "$have_execinfo" = yes; then
-		AC_DEFINE(BACKTRACE)
-	else
-		if test "x$hm_forced_backtrace" = "xyes"; then
-			AC_MSG_ERROR(No backtrace listing system capability found.)
-		fi
-	fi
-else
-	AC_MSG_RESULT(no)
+AC_CHECK_HEADERS(execinfo.h, have_execinfo=yes, have_execinfo=no)
+# possible checks for other system-specific means go here
+if test "$have_execinfo" = yes; then
+	AC_DEFINE(BACKTRACE)
 fi
 
 
Index: elinks/feature.h
diff -u elinks/feature.h:1.6 elinks/feature.h:1.7
--- elinks/feature.h:1.6	Wed Dec 31 22:52:31 2003
+++ elinks/feature.h	Wed Dec 31 23:01:24 2003
@@ -191,4 +191,29 @@
 /* #define USE_256_COLORS */
 
 
+/*** Backtrace printing
+ *
+ * Once upon a time, a disaster happens and ELinks crashes. That is a very sad
+ * event and it would be very nice to have some means how to diagnose it. In
+ * the crash handler, ELinks prints out various helpful things, however the
+ * truly important information is _where_ did it crash. Usually, users do not
+ * have gdb installed and can't provide a backtrace. However, ELinks can print
+ * a backtrace on its own, if the system supports it (currently, it is
+ * implemented only for glibc). It is not always accurate, it is useless when
+ * the ELinks binary is stripped and it still misses a lot of important
+ * information, but it can be sometimes still an indispensable help for the
+ * developers.
+ *
+ * You should keep this, unless you will strip your ELinks binary anyway, you
+ * know you are not going to report back any failures and you care about each
+ * single wasted bit.
+ *
+ * Default: enabled if the libc supports it (only glibc) */
+
+#ifdef BACKTRACE
+/* Comment out the following line if you want to always have this disabled: */
+#undef BACKTRACE
+#endif
+
+
 #endif

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