WIP: llvm recipe

recipes/llvm/recipe.sh

+GIT=https://gitlab.redox-os.org/redox-os/llvm.git
+BRANCH=redox
+
+function recipe_version {
+    printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
+    skip=1
+}
+
+function recipe_update {
+    echo "skipping update"
+    skip=1
+}
+
+function recipe_prepare {
+    mkdir -p build
+    skip=1
+}
+
+function recipe_build {
+    source="$(realpath ../source)"
+    sysroot="$(realpath ../sysroot)"
+    CMAKE_ARGS=(
+        -Wno-dev
+        -DCMAKE_CROSSCOMPILING=True
+        -DCMAKE_INSTALL_PREFIX="/"
+        -DLLVM_DEFAULT_TARGET_TRIPLE="$HOST"
+        -DLLVM_TARGET_ARCH="$ARCH"
+        -DLLVM_TARGETS_TO_BUILD=X86
+        -DCMAKE_SYSTEM_NAME=Generic
+        -DPYTHON_EXECUTABLE="/usr/bin/python2"
+        -DUNIX=1
+        -DLLVM_ENABLE_THREADS=Off
+        -DLLVM_INCLUDE_TESTS=Off
+        -target="$HOST"
+        -DLLVM_TABLEGEN="/usr/bin/llvm-tblgen-4.0"
+        -I"$sysroot/include"
+        -DCMAKE_CXX_FLAGS='--std=gnu++11'
+        -DLLVM_TOOL_LTO_BUILD=Off
+        -DLLVM_TOOL_LLVM_PROFDATA_BUILD=Off
+        -DLLVM_TOOL_LLI_BUILD=Off
+        -DLLVM_TOOL_RDOBJ_BUILD=Off
+        -DLLVM_TOOL_LLVM_COV_BUILD=Off
+        -DLLVM_TOOL_LLVM_XRAY_BUILD=Off
+        -DLLVM_TOOL_LLVM_LTO2_BUILD=Off
+        -DLLVM_TOOL_LLVM_LTO_BUILD=Off
+        -DLLVM_TOOL_LLVM_RTDYLD_BUILD=Off
+    )
+    cmake "${CMAKE_ARGS[@]}" "$source"
+    make -j$(nproc)
+    skip=1
+}
+
+function recipe_test {
+    echo "skipping test"
+    skip=1
+}
+
+function recipe_clean {
+    make clean
+    skip=1
+}
+
+function recipe_stage {
+    echo make install
+    skip=1
+}