Fix Cmake rule for extension header generation

Allow glslang to be embedded in an enclosing project (such as Shaderc)

diff --git a/StandAlone/CMakeLists.txt b/StandAlone/CMakeLists.txt
index 4d5545c..2b163e7 100644 (file)
--- a/StandAlone/CMakeLists.txt
+++ b/StandAlone/CMakeLists.txt
@@ -34,8 +34,8 @@
 find_host_package(PythonInterp 3 REQUIRED)
 
 set(GLSLANG_INTRINSIC_H          "${GLSLANG_GENERATED_INCLUDEDIR}/glslang/glsl_intrinsic_header.h")
-set(GLSLANG_INTRINSIC_PY         "${CMAKE_SOURCE_DIR}/gen_extension_headers.py")
-set(GLSLANG_INTRINSIC_HEADER_DIR "${CMAKE_SOURCE_DIR}/glslang/ExtensionHeaders")
+set(GLSLANG_INTRINSIC_PY         "${CMAKE_CURRENT_SOURCE_DIR}/../gen_extension_headers.py")
+set(GLSLANG_INTRINSIC_HEADER_DIR "${CMAKE_CURRENT_SOURCE_DIR}/../glslang/ExtensionHeaders")
 
 add_custom_command(
     OUTPUT  ${GLSLANG_INTRINSIC_H}
@@ -124,4 +124,4 @@ if(ENABLE_GLSLANG_INSTALL)
                 ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
     endif()
     install(EXPORT glslang-default-resource-limitsTargets DESTINATION ${CMAKE_INSTALL_LIBDIR}/cmake)
-endif()
\ No newline at end of file
+endif()