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PCH: Use clang's own pch functionality instead of the GCC emulation

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Fixes: #19786
This commit is contained in:
Cristian Adam
2019-10-03 14:43:00 +02:00
parent 53dedbd51e
commit bc4f8f4472
2 changed files with 7 additions and 3 deletions
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3
Modules/Compiler/Clang.cmake
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@@ -97,6 +97,9 @@ else()
"\"${__ranlib}\" <TARGET>"
)
set(CMAKE_PCH_EXTENSION .pch)
set(CMAKE_PCH_PROLOGUE "#pragma clang system_header")
set(CMAKE_${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>)
endmacro()
endif()

7
Modules/Platform/Windows-Clang.cmake
View File

@@ -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)