Ports/goldeneye-pc-port
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linux-build: resolve host <stddef.h> via -print-file-name

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<stddef.h> is compiler-internal (lib/gcc/<triple>/<ver>/include), not in
bin/../include on a native Linux GCC, so the MinGW-layout guess produced
/usr/include/stddef.h which does not exist -> fatal error in every fast3d
C++ TU. Ask the compiler with -print-file-name=include/stddef.h and fall
back to the old path. MinGW resolves to its own lib/gcc internal copy;
Windows build verified green (240/241).
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James Dansereau committed 2026-09-02 22:16:20 -04:00
1 parent 7c3bb42687
commit 8eb2efa6ca
1 file changed
+11 -1
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CMakeLists.txt
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@@ -164,7 +164,17 @@ configure_file(
# Host <stddef.h> path for port/shim/stddef.h (same reason as stdlib: the N64
# stub shadows the host header in C++ TUs, hiding max_align_t from cstddef).
get_filename_component(PORT_HOST_STDDDEF_H "${_PORT_GCC_DIR}/../include/stddef.h" ABSOLUTE)
# stddef.h is compiler-internal, not in bin/../include: on a native Linux GCC
# it lives under lib/gcc/<triple>/<ver>/include. Ask the compiler where it is;
# fall back to the MinGW bin/../include layout.
execute_process(
COMMAND "${CMAKE_C_COMPILER}" -print-file-name=include/stddef.h
OUTPUT_VARIABLE _PORT_GCC_STDDEF OUTPUT_STRIP_TRAILING_WHITESPACE ERROR_QUIET)
if(_PORT_GCC_STDDEF AND EXISTS "${_PORT_GCC_STDDEF}")
get_filename_component(PORT_HOST_STDDDEF_H "${_PORT_GCC_STDDEF}" ABSOLUTE)
else()
get_filename_component(PORT_HOST_STDDDEF_H "${_PORT_GCC_DIR}/../include/stddef.h" ABSOLUTE)
endif()
configure_file(
"${CMAKE_SOURCE_DIR}/port/include/hoststddef.h.in"
"${CMAKE_BINARY_DIR}/port/include/hoststddef.h" @ONLY)