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Add build script and github workflow
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‎.github/workflows/build-llvm.yaml

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name: "Build LLVM"
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on:
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workflow_dispatch:
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inputs:
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tag:
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description: 'Git tag for the release.'
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required: true
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type: string
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jobs:
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build_llvm:
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name: Build LLVM
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strategy:
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matrix:
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# os: [ubuntu-20.04, macos-11, windows-2019]
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os: [ubuntu-20.04]
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runs-on: ${{ matrix.os }}
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permissions:
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contents: write # for creating releases
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container:
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# Intentionally old ubuntu version with old glibc.
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image: ubuntu:18.04
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steps:
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- name: checkout
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uses: actions/checkout@v3
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# Install build dependencies.
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- run: "apt update && apt install -y clang git wget build-essential python3 ninja-build"
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# cmake from package manager is to old for the LLVM build.
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- run: "wget https://github.com/Kitware/CMake/releases/download/v3.30.0-rc2/cmake-3.30.0-rc2-linux-x86_64.sh"
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- run: "chmod +x cmake-*.sh"
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- run: "./cmake-*.sh --skip-license --prefix=/usr"
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# Build and package LLVM.
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- run: "./build-llvm-libs.sh"
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- uses: actions/upload-artifact@v3
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with:
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name: llvm-static-libs
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path: llvm-static-libs.tar.gz
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- name: create release
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id: create-release
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uses: actions/create-release@v1
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env:
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GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
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with:
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tag_name: ${{ inputs.tag }}
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release_name: ${{ inputs.tag }}
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draft: false
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prerelease: true
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- name: upload linux artifact
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uses: actions/upload-release-asset@v1
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env:
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GITHUB_TOKEN: ${{ github.token }}
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with:
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upload_url: ${{ steps.create-release.outputs.upload_url }}
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asset_path: ./llvm-static-libs.tar.gz
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asset_name: llvm-static-linux-amd64.tar.gz
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asset_content_type: application/gzip

‎.gitignore

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build/

‎CMakeLists.txt

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cmake_minimum_required(VERSION 3.5)
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project(llvm-static)
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if(POLICY CMP0114)
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cmake_policy(SET CMP0114 NEW)
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endif()
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# Avoid warning about DOWNLOAD_EXTRACT_TIMESTAMP in CMake 3.24:
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if(CMAKE_VERSION VERSION_GREATER_EQUAL "3.24.0")
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cmake_policy(SET CMP0135 NEW)
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endif()
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set(CMAKE_CXX_STANDARD 17)
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set(CMAKE_CXX_STANDARD_REQUIRED ON)
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# set(CMAKE_POSITION_INDEPENDENT_CODE ON)
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set(CMAKE_BUILD_TYPE Release)
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include(ExternalProject)
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ExternalProject_Add(${LLVM_PROJECT_TARGET}
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PREFIX ${LLVM_PROJECT_TARGET}
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GIT_REPOSITORY https://github.com/llvm/llvm-project.git
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GIT_TAG llvmorg-18.1.5
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GIT_SHALLOW ON
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SOURCE_SUBDIR llvm
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CMAKE_ARGS
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-G${CMAKE_GENERATOR}
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-DCMAKE_BUILD_TYPE=${CMAKE_BUILD_TYPE}
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-DCMAKE_INSTALL_PREFIX=<INSTALL_DIR>
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-DCMAKE_C_COMPILER:FILEPATH=${CMAKE_C_COMPILER}
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-DCMAKE_CXX_COMPILER:FILEPATH=${CMAKE_CXX_COMPILER}
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-DCMAKE_C_COMPILER_LAUNCHER:FILEPATH=${CMAKE_C_COMPILER_LAUNCHER}
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-DCMAKE_CXX_COMPILER_LAUNCHER:FILEPATH=${CMAKE_CXX_COMPILER_LAUNCHER}
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-DCMAKE_CXX_STANDARD=${CMAKE_CXX_STANDARD}
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-DCMAKE_POSITION_INDEPENDENT_CODE=${CMAKE_POSITION_INDEPENDENT_CODE}
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-DLLVM_ENABLE_PROJECTS=clang
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-DLLVM_ENABLE_RTTI=ON
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-DLLVM_ENABLE_PIC=ON
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-DLLVM_TARGETS_TO_BUILD=X86
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-DLLVM_BUILD_TOOLS=OFF
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-DLLVM_BUILD_TESTS=OFF
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-DLLVM_ENABLE_TERMINFO=OFF
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-DLLVM_ENABLE_ZLIB=OFF
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-DLLVM_ENABLE_ZSTD=OFF
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-DLLVM_ENABLE_LIBXML2=OFF
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BUILD_COMMAND ${CMAKE_COMMAND} --build <BINARY_DIR> --target clangTooling -j16
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)

‎README.md

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# llvm-static
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# LLVM Tooling
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This repository contains scripts to build static LLVM libraries which can be used to develop libclangTooling based tools. See the release page for downloadable archives.

‎build-llvm-libs.sh

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#!/usr/bin/env bash
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SCRIPT_DIR=$( cd -- "$( dirname -- "${BASH_SOURCE[0]}" )" &> /dev/null && pwd )
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BUILD_DIR="$SCRIPT_DIR/build"
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LLVM_BUILD_DIR="$BUILD_DIR/external.llvm-project"
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cd "$SCRIPT_DIR"
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mkdir -p build
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# cmake -B build -GNinja .
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# cmake --build build
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mkdir -p $LLVM_BUILD_DIR/include
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touch $LLVM_BUILD_DIR/include/clang.h
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mkdir -p $LLVM_BUILD_DIR/lib
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touch $LLVM_BUILD_DIR/lib/libclang.a
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# Pack everything we need into a tar archive.
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# We only need the header files, static libraries and add
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# a CMake file that makes it easy to link libclangTooling.
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cp $SCRIPT_DIR/cmake/CMakeLists.txt $LLVM_BUILD_DIR
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cd $LLVM_BUILD_DIR
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tar -czvf "$SCRIPT_DIR/llvm-static-libs.tar.gz" include/ lib/*.a CMakeLists.txt

‎cmake/CMakeLists.txt

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# Static libraries that are needed when using libclangTooling
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set(CLANG_TOOLING_DEPS
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clangFormat
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clangToolingInclusions
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clangFrontend
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clangDriver
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clangParse
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clangSerialization
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clangSema
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clangAPINotes
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clangEdit
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clangAnalysis
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clangASTMatchers
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clangAST
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clangSupport
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clangToolingCore
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clangRewrite
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clangLex
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clangBasic
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# Order as reported by llvm-config --libs --link-static
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LLVMWindowsDriver
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LLVMOption
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LLVMFrontendOpenMP
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LLVMFrontendOffloading
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LLVMScalarOpts
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LLVMTransformUtils
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LLVMAnalysis
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LLVMProfileData
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LLVMDebugInfoDWARF
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LLVMObject
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LLVMTextAPI
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LLVMMCParser
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LLVMIRReader
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LLVMAsmParser
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LLVMMC
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LLVMBitReader
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LLVMCore
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LLVMRemarks
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LLVMBitstreamReader
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LLVMBinaryFormat
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LLVMTargetParser
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LLVMSupport
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LLVMDemangle)
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foreach(lib ${CLANG_TOOLING_DEPS})
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add_library(${lib} STATIC IMPORTED)
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set_property(TARGET ${lib} PROPERTY IMPORTED_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}/lib/lib${lib}.a")
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endforeach(lib)
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# Exported clangTooling target.
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add_library(clangTooling STATIC IMPORTED GLOBAL)
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set_property(TARGET clangTooling PROPERTY IMPORTED_LOCATION "${CMAKE_CURRENT_SOURCE_DIR}/lib/libclangTooling.a")
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target_include_directories(clangTooling INTERFACE ${CMAKE_CURRENT_SOURCE_DIR}/include)
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set_target_properties(clangTooling PROPERTIES INTERFACE_LINK_LIBRARIES "${CLANG_TOOLING_DEPS}")

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