meson: build clover

This has only been compile tested.

v2: - Have a single option for opencl (Eric E)
    - fix typo "tgis" -> "tgsi" (Curro)
    - Don't add "lib" to pipe loader libraries, which matches the
      autotools behavior
v3: - Remove trailing whitespace
    - Make PIPE_SEARCH_DIR an absolute path
v4: - add trailing / to LIBCLC defines

Acked-by: Curro Jerez <currojerez@riseup.net>
Tested-by: Jan Vesely <jan.vesely@rutgers.edu>
cc: Aaron Watry <awatry@gmail.com>
Signed-off-by: Dylan Baker <dylan.c.baker@intel.com>

include/meson.build

@@ -78,3 +78,22 @@ if with_gallium_st_nine
     subdir : 'd3dadapter',
   )
 endif
+
+# Only install the headers if we are building a stand alone implementation and
+# not an ICD enabled implementation
+if with_gallium_opencl and not with_opencl_icd
+  install_headers(
+    'CL/cl.h',
+    'CL/cl.hpp',
+    'CL/cl_d3d10.h',
+    'CL/cl_d3d11.h',
+    'CL/cl_dx9_media_sharing.h',
+    'CL/cl_egl.h',
+    'CL/cl_ext.h',
+    'CL/cl_gl.h',
+    'CL/cl_gl_ext.h',
+    'CL/cl_platform.h',
+    'CL/opencl.h',
+    subdir: 'CL'
+  )
+endif