Build compiler-rt from the runtimes directory. (#6)

* Build compiler-rt from the runtimes directory.

* Fix the runtimes build.

.github/workflows/ci.yml

@@ -10,6 +10,7 @@ jobs:
         runs-on: windows-latest
         env:
             LLVM_VERSION: 18.1.8
+            LLVM_MAJOR_VERSION: 18
 
         strategy:
             fail-fast: false

build.bat

@@ -7,14 +7,20 @@ cd %WORKING_DIR%
 
 set THIS_DIR=%CD%
 
-cd llvm-project
-
-mkdir llvm\build
-cd llvm\build
+mkdir llvm-project\llvm\build
+cd llvm-project\llvm\build
 cmake .. %LLVM_CMAKE_CONFIGURE_FLAGS%
 cmake --build . %CMAKE_BUILD_FLAGS%
 cmake --build . --target install %CMAKE_BUILD_FLAGS%
 
 cd %THIS_DIR%
 
+mkdir llvm-project\runtimes\build
+cd llvm-project\runtimes\build
+cmake .. %RUNTIMES_CMAKE_CONFIGURE_FLAGS%
+cmake --build . %CMAKE_BUILD_FLAGS%
+cmake --build . --target install %CMAKE_BUILD_FLAGS%
+
+cd %THIS_DIR%
+
 7z a -t7z %GITHUB_WORKSPACE%\%LLVM_RELEASE_FILE% %LLVM_RELEASE_NAME%

set-env.bat

@@ -116,6 +116,7 @@ goto :loop
 set CONFIGURATION=Release
 set DEBUG_SUFFIX=
 set LLVM_CMAKE_CONFIGURE_EXTRA_FLAGS=
+set RUNTIME_CMAKE_CONFIGURE_EXTRA_FLAGS=
 set CLANG_CMAKE_CONFIGURE_EXTRA_FLAGS=
 shift
 goto :loop
@@ -127,6 +128,7 @@ goto :loop
 set CONFIGURATION=Debug
 set DEBUG_SUFFIX=-dbg
 set LLVM_CMAKE_CONFIGURE_EXTRA_FLAGS=-DLLVM_BUILD_TOOLS=OFF -DLLVM_ENABLE_ASSERTIONS=ON
+set RUNTIME_CMAKE_CONFIGURE_EXTRA_FLAGS=
 set CLANG_CMAKE_CONFIGURE_EXTRA_FLAGS=-DCLANG_BUILD_TOOLS=OFF
 shift
 goto :loop
@@ -165,17 +167,29 @@ set LLVM_CMAKE_CONFIGURE_FLAGS= ^
 	-DCMAKE_DISABLE_FIND_PACKAGE_LibXml2=TRUE ^
 	-DCMAKE_MSVC_RUNTIME_LIBRARY=%CMAKE_CRT% ^
 	-DCMAKE_MT=mt ^
-	-DLLVM_TEMPORARILY_ALLOW_OLD_TOOLCHAIN=ON ^
 	-DLLVM_ENABLE_TERMINFO=OFF ^
 	-DLLVM_ENABLE_ZLIB=OFF ^
 	-DLLVM_INCLUDE_BENCHMARKS=OFF ^
 	-DLLVM_INCLUDE_DOCS=OFF ^
-	-DLLVM_ENABLE_PROJECTS=clang;lld ^
+	-DLLVM_ENABLE_PROJECTS=lld ^
 	-DLLVM_INCLUDE_EXAMPLES=OFF ^
-	-DLLVM_INCLUDE_GO_TESTS=OFF ^
+	-DLLVM_INCLUDE_RUNTIMES=OFF ^
 	-DLLVM_INCLUDE_TESTS=OFF ^
 	-DLLVM_INCLUDE_UTILS=OFF ^
 	%LLVM_CMAKE_CONFIGURE_EXTRA_FLAGS%
+
+set RUNTIMES_CMAKE_CONFIGURE_FLAGS= ^
+	-G "%CMAKE_GENERATOR%%CMAKE_GENERATOR_SUFFIX%" ^
+	-Thost=x64 ^
+	-DCMAKE_INSTALL_PREFIX=%LLVM_RELEASE_DIR%/lib/clang/%LLVM_MAJOR_VERSION% ^
+	-DCMAKE_MSVC_RUNTIME_LIBRARY=%CMAKE_CRT% ^
+	-DCMAKE_MT=mt ^
+	-DCMAKE_C_COMPILER_TARGET="x86_64-pc-windows-msvc" ^
+	-DLLVM_ENABLE_RUNTIMES=compiler-rt ^
+	-DCOMPILER_RT_DEFAULT_TARGET_ONLY=ON ^
+    -DCOMPILER_RT_BUILD_BUILTINS=OFF ^
+    %RUNTIME_CMAKE_CONFIGURE_EXTRA_FLAGS%
+
 set CMAKE_BUILD_FLAGS= ^
 	--config %CONFIGURATION% ^
 	-- ^
@@ -188,15 +202,14 @@ set DEPLOY_FILE=%LLVM_RELEASE_FILE%
 
 echo ---------------------------------------------------------------------------
 echo LLVM_VERSION:                %LLVM_VERSION%
+echo LLVM_MAJOR_VERSION:          %LLVM_MAJOR_VERSION%
 echo LLVM_MASTER_URL:             %LLVM_MASTER_URL%
 echo LLVM_DOWNLOAD_URL:           %LLVM_DOWNLOAD_URL%
 echo LLVM_RELEASE_FILE:           %LLVM_RELEASE_FILE%
 echo LLVM_RELEASE_URL:            %LLVM_RELEASE_URL%
 echo LLVM_CMAKE_CONFIGURE_FLAGS:  %LLVM_CMAKE_CONFIGURE_FLAGS%
 echo ---------------------------------------------------------------------------
-echo CLANG_DOWNLOAD_URL:          %CLANG_DOWNLOAD_URL%
-echo CLANG_RELEASE_FILE:          %CLANG_RELEASE_FILE%
-echo CLANG_CMAKE_CONFIGURE_FLAGS: %CLANG_CMAKE_CONFIGURE_FLAGS%
+echo RUNTIMES_CMAKE_CONFIGURE_FLAGS:  %RUNTIMES_CMAKE_CONFIGURE_FLAGS%
 echo ---------------------------------------------------------------------------
 echo DEPLOY_FILE: %DEPLOY_FILE%
 echo ---------------------------------------------------------------------------