docs: update meson docs for windows
Reviewed-by: Adam Jackson <ajax@redhat.com>
This commit is contained in:
Dylan Baker
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@ -133,6 +133,18 @@ Please read the <a href="meson.html">detailed meson instructions</a>
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for more information
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</p>
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<p>On windows you can also use the visual studio backend</p>
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<pre>
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meson builddir --backend=vs
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cd builddir
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msbuild mesa.sln /m
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</pre>
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<p>
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Please read the <a href="meson.html">detailed meson instructions</a>
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for more information
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</p>
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<h2 id="scons">3. Building with SCons (Windows/Linux)</h2>
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@ -281,6 +281,20 @@ the popular compilers, a complete list is available
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dependency interface.
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</p></dd>
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<dd><p>
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As of meson 0.51.0 meson can use cmake to find llvm (the cmake finder
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was added in meson 0.49.0, but LLVM cannot be found until 0.51) Due to the
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way LLVM implements its cmake finder it will only find static libraries, it
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will never find libllvm.so.
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There is also a <pre>-Dcmake_module_path</pre> option in this meson version,
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which points to the root of an alternative installation (the prefix). For
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example:
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<pre>
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meson builddir -Dcmake_module_path=/home/user/mycmake/prefix
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</pre>
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</p></dd>
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<dd><p>
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As of meson 0.49.0 meson also has the concept of a
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<a href="https://mesonbuild.com/Native-environments.html">"native file"</a>,
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@ -325,8 +339,11 @@ should be used. It uses the same format as the native file above:
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[binaries]
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...
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llvm-config = '/usr/lib/llvm-config-32'
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cmake = '/usr/bin/cmake-for-my-arch'
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</pre>
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<p>Obviously, only cmake or llvm-config is required.</p>
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<p>Then configure meson:</p>
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<pre>
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meson builddir/ --cross-file cross-llvm.ini
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@ -335,6 +352,74 @@ should be used. It uses the same format as the native file above:
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See the <a href="#cross-compilation">Cross Compilation</a> section for more information.
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</dd>
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<dd><p>On windows (and in other cases), using llvm-config or cmake may be
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either undesirable or impossible. Meson's solution for this is a
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<a href="https://mesonbuild.com/Wrap-dependency-system-manual.html">wrap</a>, in
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this case a "binary wrap". Follow the steps below:</p>
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<ul>
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<li>Install the binaries and headers into the <code>$mesa_src/subprojects/llvm</code></li>
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<li>Add a meson build.build file to that directory (more on that later)</li>
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</ul>
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<p>The wrap file must define the following:</p>
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<ul>
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<li><code>dep_llvm</code>: a <code>declare_dependency()</code> object with include_directories, dependencies, and version set)</li>
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</ul>
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<p>It may also define:</p>
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<ul>
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<li><code>irbuilder_h</code>: a <code>files()</code> object pointing to llvm/IR/IRBuilder.h (this is requred for SWR)</li>
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<li><code>has_rtti</code>: a <code>bool</code> that declares whether LLVM was built with RTTI. Defaults to true</li>
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</ul>
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<p>such a meson.build file might look like:</p>
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<pre>
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project('llvm', ['cpp'])
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cpp = meson.get_compiler('cpp')
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_deps = []
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_search = join_paths(meson.current_source_dir(), 'lib')
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foreach d : ['libLLVMCodeGen', 'libLLVMScalarOpts', 'libLLVMAnalysis',
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'libLLVMTransformUtils', 'libLLVMCore', 'libLLVMX86CodeGen',
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'libLLVMSelectionDAG', 'libLLVMipo', 'libLLVMAsmPrinter',
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'libLLVMInstCombine', 'libLLVMInstrumentation', 'libLLVMMC',
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'libLLVMGlobalISel', 'libLLVMObjectYAML', 'libLLVMDebugInfoPDB',
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'libLLVMVectorize', 'libLLVMPasses', 'libLLVMSupport',
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'libLLVMLTO', 'libLLVMObject', 'libLLVMDebugInfoCodeView',
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'libLLVMDebugInfoDWARF', 'libLLVMOrcJIT', 'libLLVMProfileData',
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'libLLVMObjCARCOpts', 'libLLVMBitReader', 'libLLVMCoroutines',
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'libLLVMBitWriter', 'libLLVMRuntimeDyld', 'libLLVMMIRParser',
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'libLLVMX86Desc', 'libLLVMAsmParser', 'libLLVMTableGen',
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'libLLVMFuzzMutate', 'libLLVMLinker', 'libLLVMMCParser',
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'libLLVMExecutionEngine', 'libLLVMCoverage', 'libLLVMInterpreter',
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'libLLVMTarget', 'libLLVMX86AsmParser', 'libLLVMSymbolize',
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'libLLVMDebugInfoMSF', 'libLLVMMCJIT', 'libLLVMXRay',
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'libLLVMX86AsmPrinter', 'libLLVMX86Disassembler',
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'libLLVMMCDisassembler', 'libLLVMOption', 'libLLVMIRReader',
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'libLLVMLibDriver', 'libLLVMDlltoolDriver', 'libLLVMDemangle',
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'libLLVMBinaryFormat', 'libLLVMLineEditor',
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'libLLVMWindowsManifest', 'libLLVMX86Info', 'libLLVMX86Utils']
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_deps += cpp.find_library(d, dirs : _search)
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endforeach
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dep_llvm = declare_dependency(
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include_directories : include_directories('include'),
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dependencies : _deps,
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version : '6.0.0',
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)
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has_rtti = false
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irbuilder_h = files('include/llvm/IR/IRBuilder.h')
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</pre>
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<p>It is very important that version is defined and is accurate, if it is not,
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workarounds for the wrong version of LLVM might be used resulting in build
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failures.</p>
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</dd>
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</dl>
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<dt><code>PKG_CONFIG_PATH</code></dt>
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<dd><p>The
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<code>pkg-config</code> utility is a hard requirement for configuring and
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