Bug 82990

Summary:	Many drivers fail to build when xserver 1.16.0 is built against glibc-2.20
Product:	xorg	Reporter:	Armin K <krejzi>
Component:	Server/General	Assignee:	Xorg Project Team <xorg-team>
Status:	RESOLVED INVALID	QA Contact:	Xorg Project Team <xorg-team>
Severity:	major
Priority:	medium
Version:	unspecified
Hardware:	x86-64 (AMD64)
OS:	Linux (All)
Whiteboard:
i915 platform:		i915 features:

Description Armin K 2014-08-23 13:31:32 UTC

While building drivers against xserver-1.16 compiled on a glibc-2.20 system, I seem to be getting a lot of errors like these:

In file included from /usr/include/string.h:634:0,
                 from /usr/include/xorg/os.h:53,
                 from /usr/include/xorg/misc.h:115,
                 from /usr/include/xorg/xf86str.h:37,
                 from /usr/include/xorg/xf86Xinput.h:54,
                 from synproto.h:36,
                 from synproto.c:26:
/usr/include/xorg/os.h:579:1: error: expected identifier or '(' before '__extension__'
 strndup(const char *str, size_t n);

Looks like xserver is redefining stuff that's now part of glibc-2.20. I am not sure what. I have built two drivers, xf86-input-vmmouse and xf86-input-synaptics and both fail to build with same error. I suppose there would be more.

Comment 1 Michel Dänzer 2014-08-25 09:54:24 UTC

I think this happens when the driver fails to #include xorg-server.h before other X server headers. (This can also apply to configure script probes)

Current xserver Git has a check for this and provides a clearer error message.

Comment 2 Armin K 2015-09-06 13:51:55 UTC

Apparently this has been fixed in drivers, no changes were needed for xorg-server

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