Restore r26190: make code PIC

git-svn-id: https://cvs.khronos.org/svn/repos/ogl/trunk/ecosystem/public/sdk/tools/glslang@26211 e7fa87d3-cd2b-0410-9028-fcbf551c1848

CMakeLists.txt

@@ -8,6 +8,7 @@ if(WIN32)
     set(CMAKE_GENERATOR_TOOLSET "v110" CACHE STRING "Platform Toolset" FORCE)
     include(ChooseMSVCCRT.cmake)
 elseif(UNIX)
+    add_definitions(-fPIC)
 else(WIN32)
     message("unkown platform")
 endif(WIN32)