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CMake/Windows: Add a workaround for windres from GNU binutils.
This is combined from the following commits in the master branch:443dfebced
6b117d3b1f
5e34774c31
Thanks to Iouri Kharon for the bug report, the original patch, and testing.
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43521e77ac
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1 changed files with 31 additions and 1 deletions
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@ -75,10 +75,40 @@ project(xz VERSION "${XZ_VERSION}" LANGUAGES C)
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# On Apple OSes, don't build executables as bundles:
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set(CMAKE_MACOSX_BUNDLE OFF)
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# windres from GNU binutils can be tricky with command line arguments
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# that contain spaces or other funny characters. Unfortunately we need
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# a space in PACKAGE_NAME. Using \x20 to encode the US-ASCII space seems
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# to work in both cmd.exe and /bin/sh.
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#
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# However, even \x20 isn't enough in all situations, resulting in
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# "syntax error" from windres. Using --use-temp-file prevents windres
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# from using popen() and this seems to fix the problem.
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#
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# llvm-windres claims to be compatible with GNU windres but with that
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# the \x20 results in "XZx20Utils" in the compiled binary. (At the
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# same time it works correctly with clang (the C compiler).) The option
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# --use-temp-file makes no difference.
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#
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# CMake 3.25 doesn't have CMAKE_RC_COMPILER_ID so we rely on
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# CMAKE_C_COMPILER_ID. If Clang is used together with GNU windres
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# then it will fail, but this way the risk of a bad string in
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# the binary should be fairly low.
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if(WIN32 AND CMAKE_C_COMPILER_ID STREQUAL "GNU")
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# Use workarounds with GNU windres. The \x20 in PACKAGE_NAME works
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# with gcc too so we don't need to worry how to pass different flags
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# to windres and gcc.
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string(APPEND CMAKE_RC_FLAGS " --use-temp-file")
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set(PACKAGE_NAME "XZ\\x20Utils")
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else()
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# Elsewhere a space is safe. This also keeps things compatible with
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# EBCDIC in case CMake-based build is ever done on such a system.
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set(PACKAGE_NAME "XZ Utils")
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endif()
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# Definitions common to all targets:
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add_compile_definitions(
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# Package info:
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PACKAGE_NAME="XZ Utils"
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PACKAGE_NAME="${PACKAGE_NAME}"
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PACKAGE_BUGREPORT="xz@tukaani.org"
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PACKAGE_URL="https://tukaani.org/xz/"
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