diff --git a/CMakeLists.txt b/CMakeLists.txt
index 9aa72315ea1aae506ef79209899cfb497edcb850..886f694dd92d6a00338c7b087a04e4dfcd0ad2c3 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -45,7 +45,7 @@ if(USE_CCACHE)
 endif()
 
 # Precompiled header macro. Parameters are source file list and filename for pch cpp file.
-macro(PCH SRCS PCHCPP)
+macro(glslang_pch SRCS PCHCPP)
   if(MSVC)
     if (CMAKE_GENERATOR MATCHES "^Visual Studio")
       set(PCH_NAME "$(IntDir)\\pch.pch")
@@ -58,7 +58,7 @@ macro(PCH SRCS PCHCPP)
     set_source_files_properties(${PCHCPP} PROPERTIES COMPILE_FLAGS "/Ycpch.h /Fp${PCH_NAME} /Zm300" OBJECT_OUTPUTS "${PCH_NAME}")
     list(APPEND ${SRCS} "${PCHCPP}")
   endif()
-endmacro(PCH)
+endmacro(glslang_pch)
 
 project(glslang)
 # make testing optional
diff --git a/glslang/CMakeLists.txt b/glslang/CMakeLists.txt
index 32fadcdd886737766466cc9604fdbd15f6a53e17..5f51476ba5d10410731685d795445a24d5fdf633 100644
--- a/glslang/CMakeLists.txt
+++ b/glslang/CMakeLists.txt
@@ -80,7 +80,7 @@ set(HEADERS
 #                    WORKING_DIRECTORY ${CMAKE_CURRENT_SOURCE_DIR})
 # set(BISON_GLSLParser_OUTPUT_SOURCE ${CMAKE_CURRENT_SOURCE_DIR}/MachineIndependent/glslang_tab.cpp)
 
-PCH(SOURCES MachineIndependent/pch.cpp)
+glslang_pch(SOURCES MachineIndependent/pch.cpp)
 
 add_library(glslang ${LIB_TYPE} ${BISON_GLSLParser_OUTPUT_SOURCE} ${SOURCES} ${HEADERS})
 set_property(TARGET glslang PROPERTY FOLDER glslang)
diff --git a/gtests/CMakeLists.txt b/gtests/CMakeLists.txt
index 4832baac41e51c3ffe81508778350f04e91e3ad1..f678cb6ea5c982f60684f01155a0b86c197972be 100644
--- a/gtests/CMakeLists.txt
+++ b/gtests/CMakeLists.txt
@@ -25,7 +25,7 @@ if(BUILD_TESTING)
             # -- Remapper tests
             ${CMAKE_CURRENT_SOURCE_DIR}/Remap.FromFile.cpp)
 
-        PCH(TEST_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/pch.cpp)
+        glslang_pch(TEST_SOURCES ${CMAKE_CURRENT_SOURCE_DIR}/pch.cpp)
 
         add_executable(glslangtests ${TEST_SOURCES})
         set_property(TARGET glslangtests PROPERTY FOLDER tests)
diff --git a/hlsl/CMakeLists.txt b/hlsl/CMakeLists.txt
index cf2f8f3217a5345b23f333fa9989e60acf8c3e8c..f918d7a13d467998833b6a3b16f04530f5ddc75f 100644
--- a/hlsl/CMakeLists.txt
+++ b/hlsl/CMakeLists.txt
@@ -17,7 +17,7 @@ set(HEADERS
     hlslGrammar.h
     hlslParseables.h)
 
-PCH(SOURCES pch.cpp)
+glslang_pch(SOURCES pch.cpp)
 
 add_library(HLSL ${LIB_TYPE} ${SOURCES} ${HEADERS})
 set_property(TARGET HLSL PROPERTY FOLDER hlsl)
diff --git a/known_good.json b/known_good.json
index ee8288568fbfc0ca6779c8b09d0bbce8649a0389..28aafdc9a258c6698087a074470c8c1b8d34f924 100755
--- a/known_good.json
+++ b/known_good.json
@@ -5,7 +5,7 @@
       "site" : "github",
       "subrepo" : "KhronosGroup/SPIRV-Tools",
       "subdir" : "External/spirv-tools",
-      "commit" : "fb996dce752507132c40c255898154cce6c072c5"
+      "commit" : "9d699f6d4038f432c55310d5d0b4a6d507c1b686"
     },
     {
       "name" : "spirv-tools/external/spirv-headers",