Add LLVM

.editorconfig

@@ -9,3 +9,6 @@ insert_final_newline = true
 
 [*.bst]
 indent_style = space
+
+[*.yaml]
+indent_style = space

com.vscodium.codium/tool.LLVM/com.vscodium.codium.tool.LLVM.yaml

@@ -0,0 +1,29 @@
+id: "com.vscodium.codium.tool.LLVM"
+build-extension: true
+branch: "21.08"
+
+runtime: com.vscodium.codium
+sdk: org.freedesktop.Sdk//21.08
+runtime-version: stable
+
+separate-locales: false
+build-options:
+    prefix: /app/tools/LLVM
+    env:
+        - SOURCE_DATE_EPOCH=1
+
+modules:
+    -   name: llvm
+        sources:
+            -   type: archive
+                url: https://github.com/llvm/llvm-project/archive/refs/tags/llvmorg-13.0.0.tar.gz
+                sha256: a1131358f1f9f819df73fa6bff505f2c49d176e9eef0a3aedd1fdbce3b4630e8
+        buildsystem: cmake-ninja
+        config-opts:
+            - -DCMAKE_BUILD_TYPE=MinSizeRel
+            - -DCMAKE_INSTALL_PREFIX=/app/tools/LLVM
+            - -DLLVM_ENABLE_PROJECTS="clang;clang-tools-extra;compiler-rt;flang;libc;libclc;libcxx;libcxxabi;libunwind;lld;lldb;mlir;openmp;polly;pstl"
+        build-options:
+            cflags: -flto -Os
+            cxxflags: -flto -Os
+            ldflags: -flto -Os