[Piglit] [Bug 100978] New: Undefined references: gbm_bo_map and _unmap on Mali

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=100978

            Bug ID: 100978
           Summary: Undefined references: gbm_bo_map and _unmap on Mali
           Product: piglit
           Version: unspecified
          Hardware: Other
                OS: All
            Status: NEW
          Severity: normal
          Priority: medium
         Component: infrastructure
          Assignee: baker.dylan.c at gmail.com
          Reporter: yosoy at danieldiaz.org
        QA Contact: piglit at lists.freedesktop.org

When "Linking C executable ../../../../bin/point-sprite", the following errors
are thrown:

  ../../../../lib/libpiglitutil_gl.so.0: undefined reference to `gbm_bo_unmap'
  ../../../../lib/libpiglitutil_gl.so.0: undefined reference to `gbm_bo_map'
  collect2: error: ld returned 1 exit status
  make[2]: *** [bin/point-sprite] Error 1

This is due to CMakeList.txt assuming that gbm >= 12.1 includes gbm_bo_map and
gbm_bo_unmap, but that is not the case with Mali drivers (Mali-T628, Mali-T624,
Mali-450, Mali-T760). GPU drivers can be publicly found here:
  https://developer.arm.com/products/software/mali-drivers/user-space

Instead of checking for GBM_VERSION >= 12.1, it should be possible to 
  CHECK_FUNCTION_EXISTS(gbm_bo_map PIGLIT_HAS_GBM_BO_MAP)

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