opencl: use versioned .so in mesa.icd

We must have versioned library in mesa.icd, because ICD loader would
fail if the mesa-devel package wasn't installed.

Cc: "10.6" <mesa-stable@lists.freedesktop.org>
Reported-by: Fabian Deutsch <fabian.deutsch@gmx.de>
Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=73512
Signed-off-by: Igor Gnatenko <i.gnatenko.brain@gmail.com>
Reviewed-by: Emil Velikov <emil.l.velikov@gmail.com>
Acked-by: Michel Dänzer <michel.daenzer@amd.com>

configure.ac

@@ -64,6 +64,8 @@ m4_ifdef([AM_PROG_AR], [AM_PROG_AR])
 dnl Set internal versions
 OSMESA_VERSION=8
 AC_SUBST([OSMESA_VERSION])
+OPENCL_VERSION=1
+AC_SUBST([OPENCL_VERSION])
 
 dnl Versions for external dependencies
 LIBDRM_REQUIRED=2.4.60
@@ -2336,6 +2338,7 @@ AC_CONFIG_FILES([Makefile
 		src/gallium/targets/libgl-xlib/Makefile
 		src/gallium/targets/omx/Makefile
 		src/gallium/targets/opencl/Makefile
+		src/gallium/targets/opencl/mesa.icd
 		src/gallium/targets/osmesa/Makefile
 		src/gallium/targets/osmesa/osmesa.pc
 		src/gallium/targets/pipe-loader/Makefile

src/gallium/targets/opencl/Makefile.am

@@ -5,7 +5,7 @@ lib_LTLIBRARIES = lib@OPENCL_LIBNAME@.la
 lib@OPENCL_LIBNAME@_la_LDFLAGS = \
 	$(LLVM_LDFLAGS) \
 	-no-undefined \
-	-version-number 1:0 \
+	-version-number @OPENCL_VERSION@:0 \
 	$(GC_SECTIONS) \
 	$(LD_NO_UNDEFINED)
 

src/gallium/targets/opencl/mesa.icd

@@ -1 +0,0 @@
-libMesaOpenCL.so

src/gallium/targets/opencl/mesa.icd.in

@@ -0,0 +1 @@
+lib@OPENCL_LIBNAME@.so.@OPENCL_VERSION@