Bug 4393

Summary: xorg-server compile problem on uClibc
Product: xorg Reporter: Yuri Vasilevski <yvasilev>
Component: Server/DDX/XorgAssignee: Adam Jackson <ajax>
Status: RESOLVED FIXED QA Contact:
Severity: normal    
Priority: high CC: dberkholz, joshuabaergen, vapier
Version: git   
Hardware: x86 (IA32)   
OS: Linux (All)   
URL: http://bugs.gentoo.org/show_bug.cgi?id=104931
Whiteboard:
i915 platform: i915 features:
Bug Depends on:    
Bug Blocks: 3643    
Attachments:
Description Flags
xorg-execinfo-backtrace-configure.patch none

Description Yuri Vasilevski 2005-09-07 17:43:08 UTC 
When building xorg-xserver (modular X server) on gentoo embedded (uClibc based)
I found that hw/xfree86/common/xf86Events.c check for __GLIBC__ and if it is
defined assumes that it is building on a glibc based platform, includes
execinfo.h and tries to use it's functionality. The problem is that uClibc being
mostly source compatible with glibc also defines __GLIBC__, but lacks execinfo
functionality.

I made a quick patch to work around this problem (can be found in my Gentoo's
bug report at: http://bugs.gentoo.org/show_bug.cgi?id=104931 ), but as it was
sugested by SpanKY, execinfo.h's presence should be detected by configure and
then proper actions should be taken by xf86Events.c.

Yuri.
Comment 1 Joshua Baergen 2005-09-07 18:01:41 UTC 
Add myself and spyderous to CC.
Comment 2 Mike Frysinger 2005-09-07 19:13:07 UTC 
Created attachment 3198 [details] [review]
xorg-execinfo-backtrace-configure.patch

poc patch against cvs
Comment 3 Adam Jackson 2005-09-09 12:36:09 UTC 
this is an xorg bug, not an xserver bug.

assign to me.
Comment 4 Adam Jackson 2005-09-10 10:38:29 UTC 
there's no way to do configure-style checks in the monolithic build system, so
i'll be setting imake to assume the backtrace functionality exists for linux. 
if you want to build Xorg on uclibc, you'll need to put #define
HasGlibcBacktrace NO in your host.def.

marking as a doc blocker.
Comment 5 Mike Frysinger 2005-09-11 14:37:14 UTC 
we're not looking for monolithic support here, just support for the modular system
Comment 6 Adam Jackson 2005-10-02 23:32:40 UTC 
applied, with some imakefile tweaks to get the semantics right in the monolith.
 thanks!

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