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[Flang][Windows] Disable PCH on Windows for flangFrontend #134726

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[Flang][Windows] Disable PCH on Windows for flangFrontend #134726

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20 changes: 13 additions & 7 deletions flang/lib/Frontend/CMakeLists.txt
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Original file line number Diff line number Diff line change
Expand Up @@ -73,10 +73,16 @@ add_flang_library(flangFrontend
clangDriver
)

target_precompile_headers(flangFrontend PRIVATE
[["flang/Parser/parsing.h"]]
[["flang/Parser/parse-tree.h"]]
[["flang/Parser/dump-parse-tree.h"]]
[["flang/Lower/PFTBuilder.h"]]
[["flang/Lower/Bridge.h"]]
)
# Precompiled Headers for flangFrontend
# Only enable PCH on non-Windows platforms, as the current usage of
# target_precompile_headers appears fragile during incremental builds
# involving CMake regeneration specifically on Windows.
if(NOT WIN32)
target_precompile_headers(flangFrontend PRIVATE
[["flang/Parser/parsing.h"]]
[["flang/Parser/parse-tree.h"]]
[["flang/Parser/dump-parse-tree.h"]]
[["flang/Lower/PFTBuilder.h"]]
[["flang/Lower/Bridge.h"]]
)
endif()