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-rw-r--r--Modules/Platform/Windows-Clang.cmake7
1 files changed, 4 insertions, 3 deletions
diff --git a/Modules/Platform/Windows-Clang.cmake b/Modules/Platform/Windows-Clang.cmake
index 84b3a9bd30..f2265534fd 100644
--- a/Modules/Platform/Windows-Clang.cmake
+++ b/Modules/Platform/Windows-Clang.cmake
@@ -83,9 +83,10 @@ macro(__windows_compiler_clang_gnu lang)
string(APPEND CMAKE_${lang}_FLAGS_RELWITHDEBINFO_INIT " -O2 -g -DNDEBUG -Xclang -gcodeview ${__ADDED_FLAGS}")
set(CMAKE_INCLUDE_SYSTEM_FLAG_${lang} "-isystem ")
- set(CMAKE_PCH_EXTENSION .gch)
- set(CMAKE_${lang}_COMPILE_OPTIONS_USE_PCH -Winvalid-pch -include <PCH_HEADER>)
- set(CMAKE_${lang}_COMPILE_OPTIONS_CREATE_PCH -Winvalid-pch -x ${__pch_header_${lang}} -include <PCH_HEADER>)
+ set(CMAKE_PCH_EXTENSION .pch)
+ set(CMAKE_PCH_PROLOGUE "#pragma clang system_header")
+ set(CMAKE_${lang}_COMPILE_OPTIONS_USE_PCH -Xclang -include-pch -Xclang <PCH_FILE>)
+ set(CMAKE_${lang}_COMPILE_OPTIONS_CREATE_PCH -Xclang -emit-pch -Xclang -include -Xclang <PCH_HEADER>)
unset(__ADDED_FLAGS)
unset(__ADDED_FLAGS_DEBUG)