hopefully smaller binary size

.gitea/workflows/build.yml

@@ -27,15 +27,13 @@ jobs:
             zlib1g-dev \
             build-essential \
             lld \
-            clang
+            clang \
+            wget \
+            libssl-dev
           pip3 install PyYAML>=5.1
 
       - name: Install CMake (from source)
         run: |
-          apt-get update && apt-get install -y \
-            wget \
-            libssl-dev
-
           CMAKE_VERSION=3.28.3
           cd /tmp
           wget -q https://github.com/Kitware/CMake/releases/download/v${CMAKE_VERSION}/cmake-${CMAKE_VERSION}.tar.gz
@@ -46,16 +44,25 @@ jobs:
           make install
           cmake --version
 
-      - name: Configure Clang (using Clang)
+      - name: Configure LLVM/Clang (lean mode)
         run: |
           export CC=clang
           export CXX=clang++
+
           cmake -S llvm -B build \
             -DLLVM_ENABLE_PROJECTS='clang;clang-tools-extra' \
-            -DLLVM_ENABLE_RUNTIMES='libcxx;libcxxabi;libunwind' \
-            -DCMAKE_BUILD_TYPE=Release \
-            -DCMAKE_INSTALL_PREFIX=${INSTALL_PATH} \
-            -DLLVM_ENABLE_LLD=ON
+            -DLLVM_TARGETS_TO_BUILD='X86' \
+            -DLLVM_INSTALL_TOOLCHAIN_ONLY=ON \
+            -DLLVM_INCLUDE_TESTS=OFF \
+            -DLLVM_INCLUDE_EXAMPLES=OFF \
+            -DLLVM_INCLUDE_DOCS=OFF \
+            -DLLVM_ENABLE_ASSERTIONS=OFF \
+            -DLLVM_ENABLE_RTTI=OFF \
+            -DLLVM_ENABLE_EH=OFF \
+            -DCMAKE_BUILD_TYPE=MinSizeRel \
+            -DLLVM_ENABLE_LLD=ON \
+            -DBUILD_SHARED_LIBS=ON \
+            -DCMAKE_INSTALL_PREFIX=${INSTALL_PATH}
 
       - name: Build Clang
         run: |
@@ -65,13 +72,18 @@ jobs:
         run: |
           cmake --install build --prefix ${INSTALL_PATH}
 
-      - name: Package artifact
+      - name: Strip binaries (massive size reduction)
         run: |
-          tar -czf clang-p2996.tar.gz -C ${INSTALL_PATH} .
+          find ${INSTALL_PATH} -type f -exec strip --strip-unneeded {} + || true
+
+      - name: Package artifact (Zstd)
+        run: |
+          apt-get update && apt-get install -y zstd
+          tar --use-compress-program=zstd -cf clang-p2996.tar.zst -C ${INSTALL_PATH} .
 
       - name: Upload artifact
         uses: actions/upload-artifact@v3
         with:
           name: clang-p2996
-          path: clang-p2996.tar.gz
+          path: clang-p2996.tar.zst