[Bug 773021] Review Request: piglit - Collection of automated tests for OpenGL implementations

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https://bugzilla.redhat.com/show_bug.cgi?id=773021

--- Comment #4 from Scott Tsai <scottt.tw@xxxxxxxxx> 2012-01-12 13:27:58 EST ---
(In reply to comment #2)
In http://mcepl.fedorapeople.org/tmp/_build-1-0.9.git20120110Rf26fbd0.el6.log
the build failure is caused by:

/usr/bin/gcc  -O2 -g -pipe -Wall -Wp,-D_FORTIFY_SOURCE=2 -fexceptions
-fstack-protector --param=ssp-buffer-size=4 -m64 -mtune=generic  -Wall -g 
-fPIC CMakeFiles/crash-cubemap-order.dir/crash-cubemap-order.c.o  -o
../../../../bin/crash-cubemap-order -rdynamic ../../../../lib/libpiglitutil.so
-lGL -lGLU -lglut -lX11 -lm 
../../../../lib/libpiglitutil.so: undefined reference to `piglit_window_mode'
../../../../lib/libpiglitutil.so: undefined reference to `piglit_height'
../../../../lib/libpiglitutil.so: undefined reference to `piglit_display'
../../../../lib/libpiglitutil.so: undefined reference to `piglit_width'
../../../../lib/libpiglitutil.so: undefined reference to `piglit_init'

If you remove "-DBUILD_SHARED_LIBS:BOOL=ON" from you cmake invocation,
libpiglitutil would get built as a static library and the link failure would
not happen.

Analysis: apparently piglit tests that use window related functions from
libpiglit must define the "piglit_window_mode" etc global variables.
crash-cubemap-order.c doesn't use those functions, doesn't define those global
variables and thus linking fails when libpiglit is built as a shared library.

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