[Bug 4500] New: xorg drivers and pkgconfig sdkdir

[bugzilla-daemon at amethyst.openembedded.net]

http://bugs.openembedded.net/show_bug.cgi?id=4500

           Summary: xorg drivers and pkgconfig sdkdir
    Classification: Unclassified
           Product: Openembedded
           Version: unspecified
          Platform: All
        OS/Version: All
            Status: UNCONFIRMED
          Severity: normal
          Priority: P3
         Component: org.openembedded.dev
        AssignedTo: openembedded-issues at lists.openembedded.org
        ReportedBy: kalev at smartlink.ee


Created an attachment (id=9912)
 --> (http://bugs.openembedded.net/attachment.cgi?id=9912)
Patch against xorg-driver-common.inc to fix xorg include dir.

Several xorg drivers fail to build (for example vesa and via video drivers)
because their configure.ac contains
sdkdir=$(pkg-config --variable=sdkdir xorg-server)

The xorg-server.pc in the target staging directory has paths relative to target
root:
sdkdir=/usr/include/xorg

The problem here is that if configure scripts use this variable, it won't point
to our staging directory, but instead to host machine's include dir.

Normally, if configure scripts use --libs or --cflags, then pkg-config mangles
those paths if PKG_CONFIG_SYSROOT_DIR variable is set. Unfortunately it doesn't
work for "pkg-config --variable", and configure fails with an error message
like this:

i586-linux-gcc -DHAVE_CONFIG_H -I. -I. -I.. -I/usr/include/xorg -I../src
-isystem/home/kalev/OpenEmbedded-uus/build/tmp/staging/i586-linux/usr/include
-isystem/home/kalev/OpenEmbedded-uus/build/tmp/staging/i586-linux/usr/include
-march=i486 -mtune=i586 -Os
-I/home/kalev/OpenEmbedded-uus/build/tmp/staging/i586-linux/usr/include/xorg
-I/home/kalev/OpenEmbedded-uus/build/tmp/staging/i586-linux/usr/include/pixman-1
-I../src -MT vesa.lo -MD -MP -MF .deps/vesa.Tpo -c vesa.c  -fPIC -DPIC -o
.libs/vesa.o
CROSS COMPILE Badness: /usr/include in INCLUDEPATH: /usr/include/xorg
cc1: internal compiler error: in add_path, at c-incpath.c:371



I am not sure what is the best way to fix it. I see 3 options:
1) Just patch failing packages.
2) Ask in xorg devel lists to use "pkg-config --cflags" instead if "pkg-config
--variable=sdkdir".
3) Make pkg-config mangle this variable if PKG_CONFIG_SYSROOT_DIR is set.

Any thoughts?

Attached a patch against xorg-driver-common.inc, which uses sed to correct
include dirs in configure.ac.

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