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CMake: Fix Windows build with Clang/LLVM 17.

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llvm-windres 17.0.0 has more accurate emulation of GNU windres, so
the hack for GNU windres must now be used with llvm-windres too.

LLVM 16.0.6 has the old behavior and there likely won't be more
16.x releases. So we can simply check for >= 17.0.0.

See also:
2bcc0fdc58
This commit is contained in:
Lasse Collin 2023-09-27 19:54:35 +03:00
parent 5a9af95f85
commit 0570308ddd
1 changed files with 14 additions and 12 deletions
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26
CMakeLists.txt
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@ -93,19 +93,21 @@ set(CMAKE_MACOSX_BUNDLE OFF)
# "syntax error" from windres. Using --use-temp-file prevents windres
# from using popen() and this seems to fix the problem.
#
# llvm-windres claims to be compatible with GNU windres but with that
# the \x20 results in "XZx20Utils" in the compiled binary. (At the
# same time it works correctly with clang (the C compiler).) The option
# --use-temp-file makes no difference.
# llvm-windres from Clang/LLVM 16.0.6 and older: The \x20 results
# in "XZx20Utils" in the compiled binary. The option --use-temp-file
# makes no difference.
#
# CMake 3.25 doesn't have CMAKE_RC_COMPILER_ID so we rely on
# CMAKE_C_COMPILER_ID. If Clang is used together with GNU windres
# then it will fail, but this way the risk of a bad string in
# the binary should be fairly low.
if(WIN32 AND CMAKE_C_COMPILER_ID STREQUAL "GNU")
# Use workarounds with GNU windres. The \x20 in PACKAGE_NAME works
# with gcc too so we don't need to worry how to pass different flags
# to windres and gcc.
# llvm-windres 17.0.0 and later: It emulates GNU windres more accurately, so
# the workarounds used with GNU windres must be used with llvm-windres too.
#
# CMake 3.27 doesn't have CMAKE_RC_COMPILER_ID so we rely on
# CMAKE_C_COMPILER_ID.
if(WIN32 AND (CMAKE_C_COMPILER_ID STREQUAL "GNU" OR (
CMAKE_C_COMPILER_ID STREQUAL "Clang" AND
CMAKE_C_COMPILER_VERSION VERSION_GREATER_EQUAL "17")))
# Use workarounds with GNU windres and llvm-windres >= 17.0.0. The \x20
# in PACKAGE_NAME works with gcc and clang too so we don't need to worry
# how to pass different flags to windres and the C compiler.
string(APPEND CMAKE_RC_FLAGS " --use-temp-file")
set(PACKAGE_NAME "XZ\\x20Utils")
else()