Cannot build, no rule to make target 'libdxcompiler.so'.

[TheEmeraldFalcon]

I have cloned the project and its submodules completely. I run the following cmake command:

cmake -S . -B build -DSDLSHADERCROSS_DXC=ON -DDirectXShaderCompiler_INCLUDE_PATH=external/DirectXShaderCompiler/include -DDirectXShaderCompiler_dxcompiler_LIBRARY=external/DirectXShaderCompiler/lib/libdxcompiler.so -DDirectXShaderCompiler_dxil_LIBRARY=external/DirectXShaderCompiler/lib/libdxil.so -Dspirv_cross_c_shared_DIR=~/vulkansdk/1.4.304.0/x86_64/share/spirv_cross_c_shared/cmake

This executes without errors. When I go to build the project, however, using either cmake --build build --parallel $(nproc) or cd build && make, I receive the following error(s):

[ 50%] Built target SDL3_shadercross-static
make[2]: *** No rule to make target 'external/DirectXShaderCompiler/lib/libdxcompiler.so', needed by 'shadercross'.  Stop.
make[1]: *** [CMakeFiles/Makefile2:111: CMakeFiles/shadercross.dir/all] Error 2
make: *** [Makefile:91: all] Error 2

Contents of the generated makefile build/Makefile:

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Basic observation, the Makefile lacks any reference to anything related to DirectX in any way, perhaps I haven't set everything up correctly? The given directories exist, but libdxcompiler.so hasn't been compiled yet (the missing rule). I apologize if I'm missing something really obvious, I'm new to CMake so a simple error on my part wouldn't surprise me.

[madebr]

I have cloned the project and its submodules completely. I run the following cmake command:

cmake -S . -B build -DSDLSHADERCROSS_DXC=ON -DDirectXShaderCompiler_INCLUDE_PATH=external/DirectXShaderCompiler/include -DDirectXShaderCompiler_dxcompiler_LIBRARY=external/DirectXShaderCompiler/lib/libdxcompiler.so -DDirectXShaderCompiler_dxil_LIBRARY=external/DirectXShaderCompiler/lib/libdxil.so -Dspirv_cross_c_shared_DIR=~/vulkansdk/1.4.304.0/x86_64/share/spirv_cross_c_shared/cmake

It looks like you passed paths to for the dxcompiler because CMake configuration failed for you.
*_INCLUDE_PATH and *_PATH variables needs paths to existing directories and/or files.

Run cmake -P build-scripts/download-prebuilt-DirectXShaderCompiler.cmake to download prebuilt directxcompiler binaries from microsoft/DirectXShaderCompiler, and configure with -DCMAKE_PREFIX_PATH=external/DirectXShaderCompiler-binaries

Alternatively, build everything yourself by configuring with -DSDLSHADERCROSS_VENDORED=TRUE. Then you don't need to download any pre-built binaries, don't need to configure with -DCMAKE_PREFIX_PATH etc.

[TheEmeraldFalcon]

Thank you! DirectXShaderCompiler-binaries contained the missing library, I changed all of the path directories to reference the new binaries directory and it worked. CMake command (larger than necessary, just trying to cover every base) for anyone who's interested:

cmake -S . -B build -DSDLSHADERCROSS_DXC=ON -DDirectXShaderCompiler_INCLUDE_PATH=external/DirectXShaderCompiler-binaries/linux/include/ -DDirectXShaderCompiler_dxcompiler_LIBRARY=external/DirectXShaderCompiler-binaries/linux/lib/libdxcompiler.so -DDirectXShaderCompiler_dxil_LIBRARY=external/DirectXShaderCompiler-binaries/linux/lib/libdxil.so -Dspirv_cross_c_shared_DIR=~/vulkansdk/1.4.304.0/x86_64/share/spirv_cross_c_shared/cmake -DCMAKE_PREFIX_PATH=external/DirectXShaderCompiler-binaries/