Fails to build in a directory that has a parent directory with spaces in the name

[rukai]

Initially reported here: https://www.reddit.com/r/rust/comments/9ye5s8/vulkano_fails_to_compile_after_implementing/

Doing cargo run --release in the directory /home/rubic/dir with space oh no/shaderc-rs
Results in this compile error.

 97%] Building CXX object shaderc/glslc/CMakeFiles/glslc.dir/src/dependency_info.cc.o
[ 97%] Built target shaderc_shared
[ 98%] Linking CXX executable shaderc-online-compile
[ 98%] Built target shaderc-online-compile
[ 98%] Linking CXX static library libglslc.a
[ 98%] Built target glslc

--- stderr
usr/bin/ar: /home/rubic/dir: No such file or directory
make[2]: *** [shaderc/libshaderc/CMakeFiles/shaderc_combined_genfile.dir/build.make:69: shaderc/libshaderc/libshaderc_combined.a] Error 9
make[1]: *** [CMakeFiles/Makefile2:2984: shaderc/libshaderc/CMakeFiles/shaderc_combined_genfile.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
make: *** [Makefile:130: all] Error 2
thread 'main' panicked at '
command did not execute successfully, got: exit code: 2

build script failed, must exit now', /home/rubic/.cargo/registry/src/github.com-1ecc6299db9ec823/cmake-0.1.33/src/lib.rs:773:5
stack backtrace:
   6: std::panicking::begin_panic_fmt
             at libstd/panicking.rs:346
   7: cmake::fail
   8: cmake::run
   9: cmake::Config::build
  10: build_script_build::main

This is the important line: usr/bin/ar: /home/rubic/dir: No such file or directory
The path given to ar should be escaped.

[antiagainst]

Gah, whitespaces in paths, what a beautiful legacy we inherit from the past.

I'm using standard Path and the cmake-rs crate and thought they should have handled that, but it seems not.

Apparently it's quite difficult to come up with an elegant solution. I tried to escape the space, or quote it, all are not working.

I think we may need to fix cmake-rs for this.

[kroppt]

The root cause of the problem appears to be:
google/shaderc#473

[kroppt]

The fix is available starting in v2023.8. This repository needs to update their sources to get it.