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-rw-r--r--Modules/Compiler/GNU.cmake8
1 files changed, 8 insertions, 0 deletions
diff --git a/Modules/Compiler/GNU.cmake b/Modules/Compiler/GNU.cmake
index 6b1bd3a..e0ff174 100644
--- a/Modules/Compiler/GNU.cmake
+++ b/Modules/Compiler/GNU.cmake
@@ -11,6 +11,9 @@ set(__COMPILER_GNU 1)
include(Compiler/CMakeCommonCompilerMacros)
include(Internal/CMakeCheckCompilerFlag)
+set(__pch_header_C "c-header")
+set(__pch_header_CXX "c++-header")
+
macro(__compiler_gnu lang)
# Feature flags.
set(CMAKE_${lang}_VERBOSE_FLAG "-v")
@@ -104,4 +107,9 @@ macro(__compiler_gnu lang)
unset(_COMPILER_ARGS)
endif()
list(APPEND CMAKE_${lang}_COMPILER_PREDEFINES_COMMAND "-dM" "-E" "-c" "${CMAKE_ROOT}/Modules/CMakeCXXCompilerABI.cpp")
+
+ set(CMAKE_PCH_EXTENSION .gch)
+ set(CMAKE_PCH_PROLOGUE "#pragma GCC system_header")
+ set(CMAKE_${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>)
endmacro()