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Windows: Split CMAKE_CXX_FLAGS before passing to execute_process

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CMAKE_CXX_FLAGS is a space-separated string rather than a semicolon-separated
list. Passing ${CMAKE_CXX_FLAGS} directly to execute_process(COMMAND ...)
passes the entire multi-flag string as a single argv argument to the compiler,
causing option parsing to fail when multiple flags are present (such as
flags configured via the CXXFLAGS environment variable).

Use separate_arguments() to convert CMAKE_CXX_FLAGS into a list so each flag
is passed as an individual argument.
This commit is contained in:
Kaiyi Li committed 2026-08-26 15:52:58 +00:00
1 parent 9d4b493ec0
commit 2ea749c7ea
1 file changed
+2 -1
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Source/Windows/CMakeLists.txt
+2 -1
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@@ -15,7 +15,8 @@ function(patch_library_wine target)
COMMAND dd bs=32 count=1 seek=2 conv=notrunc if=${CMAKE_SOURCE_DIR}/Source/Windows/wine_builtin.bin of=$<TARGET_FILE:${target}>)
endfunction()
execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CMAKE_CXX_FLAGS} -print-libgcc-file-name
separate_arguments(CXX_FLAGS_LIST NATIVE_COMMAND "${CMAKE_CXX_FLAGS}")
execute_process(COMMAND ${CMAKE_CXX_COMPILER} ${CXX_FLAGS_LIST} -print-libgcc-file-name
OUTPUT_VARIABLE LIBGCC_PATH
OUTPUT_STRIP_TRAILING_WHITESPACE)