[BLFS Trac] #3237: MesaLib Demos can not find GL/gl.h

#3237: MesaLib Demos can not find GL/gl.h
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 Reporter:  synthehol  |       Owner:  blfs-book <at> …                   
     Type:  defect     |      Status:  new                           
 Priority:  normal     |   Milestone:  6.7                           
Component:  BOOK       |     Version:  SVN                           
 Severity:  normal     |    Keywords:  mesalib mesademos mesa gl.h   
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 Compilation of MesaLib fails with:

 {{{
 make[1]: Entering directory `/sources/Mesa-7.9/xdemos'
 gcc -L../lib -lGL -o glxinfo glxinfo.c
 glxinfo.c:41:19: fatal error: GL/gl.h: No such file or directory
 compilation terminated.
 make[1]: *** [glxinfo] Error 1
 make[1]: Leaving directory `/sources/Mesa-7.9/xdemos'
 make: *** [default] Error 1
 }}}

 A similar error occurs when not applying the same solution to glxgears:

 {{{
 make[1]: Entering directory `/sources/Mesa-7.9/xdemos'
 gcc -I../include -L../lib -lGL -o glxinfo glxinfo.c
 gcc -L../lib -lGL -o glxgears glxgears.c
 glxgears.c:36:19: fatal error: GL/gl.h: No such file or directory
 compilation terminated.
 make[1]: *** [glxgears] Error 1
 make[1]: Leaving directory `/sources/Mesa-7.9/xdemos'
 make: *** [default] Error 1
 }}}

 The solution: Add {{{-I$(TOP)/include}}} to the list of arguments for both
 glxinfo and glxgears in xdemos/Makefile.

 My system: LFS-6.8, BLFS svn-20110326 (revision 8876)

 Unless I am the only one who has this problem, the attached patch can be
 used to replace the one currently used in BLFS to solve this.

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Ticket URL: <http://wiki.linuxfromscratch.org/blfs/ticket/3237>
BLFS Trac <http://wiki.linuxfromscratch.org/blfs>
Beyond Linux From Scratch
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