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-rw-r--r--cmake/compiler/clang/settings.cmake3
1 files changed, 3 insertions, 0 deletions
diff --git a/cmake/compiler/clang/settings.cmake b/cmake/compiler/clang/settings.cmake
index abb29e84cb4..febe93f94df 100644
--- a/cmake/compiler/clang/settings.cmake
+++ b/cmake/compiler/clang/settings.cmake
@@ -3,6 +3,9 @@ if(CMAKE_CXX_COMPILER_ID MATCHES "AppleClang")
# apple doesnt like to do the sane thing which would be to use the same version numbering as regular clang
# version number pulled from https://en.wikipedia.org/wiki/Xcode#Toolchain_versions for row matching LLVM 11
set(CLANG_EXPECTED_VERSION 12.0.5)
+ # enable -fpch-instantiate-templates for AppleClang (by default it is active only for regular clang)
+ set(CMAKE_C_COMPILE_OPTIONS_INSTANTIATE_TEMPLATES_PCH -fpch-instantiate-templates)
+ set(CMAKE_CXX_COMPILE_OPTIONS_INSTANTIATE_TEMPLATES_PCH -fpch-instantiate-templates)
endif()
if(CMAKE_CXX_COMPILER_VERSION VERSION_LESS CLANG_EXPECTED_VERSION)