single stage

Author: AlexDenisov

.github/workflows/toolchain.yml

@@ -2,6 +2,9 @@ name: Build toolchain
 
 env:
     LLVM_REF: "cd708029e0b2869e80abe31ddb175f7c35361f90" # 19.1.7
+    # GH Actions are dead slow, can't build two-stage
+    CMAKE_CACHE: "SingleStage" # ToolchainCache
+    STAGE: "" # stage2-
 
 on:
   push:
@@ -14,6 +17,7 @@ jobs:
     runs-on: ${{ matrix.RUNNER }}
     strategy:
       matrix:
+        fail-fast: false
         include:
             - ARCH: x86_64
               RUNNER: ubuntu-22.04
@@ -26,6 +30,9 @@ jobs:
               OS: Darwin
     steps:
       - uses: actions/checkout@v5
+      - uses: hendrikmuhs/[email protected]
+        with:
+            max-size: "5000MB"
       - uses: actions/checkout@v5
         with:
             repository: 'llvm/llvm-project'
@@ -44,11 +51,11 @@ jobs:
             mkdir build.dir
             cmake -G Ninja \
                 -B build.dir \
-                -C ToolchainCache.cmake \
+                -C ${{ env.CMAKE_CACHE }}.cmake \
                 llvm/llvm \
                 -DCMAKE_INSTALL_PREFIX=${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain
-            cmake --build build.dir --target stage2-distribution
-            cmake --build build.dir --target stage2-install-distribution
+            cmake --build build.dir --target ${{ env.STAGE }}distribution
+            cmake --build build.dir --target ${{ env.STAGE }}install-distribution
             tar -czvf \
                 ${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain.tar.gz \
                 ${{ matrix.OS }}-${{ matrix.ARCH }}.toolchain

SingleStage.cmake

@@ -0,0 +1,46 @@
+# Based on clang/cmake/caches/DistributionExample-stage2.cmake
+
+set(LLVM_ENABLE_PROJECTS "clang;clang-tools-extra;lld" CACHE STRING "")
+set(LLVM_ENABLE_RUNTIMES "compiler-rt;libcxx;libcxxabi;libunwind" CACHE STRING "")
+
+set(LLVM_TARGETS_TO_BUILD X86;ARM;AArch64 CACHE STRING "")
+set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
+set(LLVM_CCACHE_BUILD ON CACHE BOOL "")
+set(LLVM_ENABLE_ZSTD OFF CACHE BOOL "")
+set(LLVM_ENABLE_TERMINFO OFF CACHE BOOL "")
+set(LLVM_ENABLE_ZLIB OFF CACHE BOOL "")
+
+set(CMAKE_BUILD_TYPE Release CACHE STRING "")
+
+if(APPLE)
+    set(libtool_darwin llvm-libtool-darwin)
+endif()
+
+# setup toolchain
+set(LLVM_INSTALL_TOOLCHAIN_ONLY ON CACHE BOOL "")
+set(LLVM_TOOLCHAIN_TOOLS
+    ${libtool_darwin}
+    clang-format
+    clang-tidy
+    llvm-ar
+    llvm-dwp
+    llvm-nm
+    llvm-objcopy
+    llvm-objdump
+    llvm-profdata
+    llvm-ranlib
+    llvm-strip
+    llvm-symbolizer
+
+    CACHE STRING "")
+
+set(LLVM_DISTRIBUTION_COMPONENTS
+    clang
+    LTO
+    lld
+    clang-format
+    clang-resource-headers
+    builtins
+    runtimes
+    ${LLVM_TOOLCHAIN_TOOLS}
+    CACHE STRING "")