Fix #1959 by reverting 7b0e236 to put files in two places.
diff --git a/SPIRV/CMakeLists.txt b/SPIRV/CMakeLists.txt
old mode 100644
new mode 100755
index e25ec0a..9869baf
--- a/SPIRV/CMakeLists.txt
+++ b/SPIRV/CMakeLists.txt
@@ -90,9 +90,10 @@
         install(TARGETS SPIRV EXPORT SPIRVTargets
                 ARCHIVE DESTINATION ${CMAKE_INSTALL_LIBDIR})
     endif()
-	
-	install(EXPORT SPVRemapperTargets DESTINATION lib/cmake)
-	install(EXPORT SPIRVTargets DESTINATION lib/cmake)
 
+    install(EXPORT SPVRemapperTargets DESTINATION lib/cmake)
+    install(EXPORT SPIRVTargets DESTINATION lib/cmake)
+
+    install(FILES ${HEADERS} ${SPVREMAP_HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/SPIRV/)
     install(FILES ${HEADERS} ${SPVREMAP_HEADERS} DESTINATION ${CMAKE_INSTALL_INCLUDEDIR}/glslang/SPIRV/)
 endif(ENABLE_GLSLANG_INSTALL)