Add upstreams to gcc, gnu-binutils. Update llvm. Use llvm recipe when building rust

recipes/gcc/recipe.sh

 GIT=https://gitlab.redox-os.org/redox-os/gcc.git
+GIT_UPSTREAM=https://gcc.gnu.org/git/gcc.git
 BRANCH=redox
 BUILD_DEPENDS=(relibc)
 DEPENDS="gnu-binutils relibc"

recipes/gnu-binutils/recipe.sh

 GIT=https://gitlab.redox-os.org/redox-os/binutils-gdb.git
+GIT_UPSTREAM=git://sourceware.org/git/binutils-gdb.git
 BUILD_DEPENDS=(relibc)
 
 function recipe_version {

recipes/llvm/recipe.sh

 GIT=https://gitlab.redox-os.org/redox-os/llvm.git
+GIT_UPSTREAM=https://github.com/rust-lang/llvm.git
 BRANCH=redox
 
 function recipe_version {
@@ -32,7 +33,7 @@ function recipe_build {
         -DLLVM_ENABLE_THREADS=Off
         -DLLVM_INCLUDE_TESTS=Off
         -target="$HOST"
-        -DLLVM_TABLEGEN="/usr/bin/llvm-tblgen-4.0"
+        -DLLVM_TABLEGEN="/usr/bin/llvm-tblgen-7"
         -I"$sysroot/include"
         -DCMAKE_CXX_FLAGS='--std=gnu++11'
         -DLLVM_TOOL_LTO_BUILD=Off

recipes/rust/config.toml

@@ -6,11 +6,10 @@ host = ["x86_64-unknown-redox"]
 target = ["x86_64-unknown-redox"]
 docs = false
 submodules = false
+tools = ["src"]
 verbose = 1
 
 [rust]
-thinlto = false
-use-jemalloc = false
 backtrace = false
 rpath = false
 codegen-tests = false

recipes/rust/llvm-config

@@ -4,7 +4,7 @@ import sys
 import os
 
 args = sys.argv[1:]
-prefix = os.path.realpath(os.path.dirname(os.path.abspath(sys.argv[0])) + "/llvm-prefix")
+prefix = os.path.realpath(os.path.dirname(os.path.abspath(sys.argv[0])) + "/sysroot")
 
 # The values here are copied from the output of llvm-config running under Redox.
 # This is a hack, and should be replaced if possible.

recipes/rust/recipe.sh

 GIT=https://gitlab.redox-os.org/redox-os/rust.git
 BRANCH=compile-redox
+BUILD_DEPENDS=(llvm)
 DEPENDS="gcc cargo"
 
-LLVM_GIT="https://gitlab.redox-os.org/redox-os/llvm.git"
-LLVM_SOURCE="$(realpath -m llvm-source)"
-LLVM_BUILD="$(realpath -m llvm-build)"
-LLVM_PREFIX="$(realpath -m llvm-prefix)"
-SYSROOT="/usr/$HOST"
-unset AR AS CC CXX LD NM OBJCOPY OBJDUMP RANLIB READELF STRIP
-
-
-LLVM_CMAKE_ARGS=(
-    -Wno-dev
-    -DCMAKE_CROSSCOMPILING=True
-    -DCMAKE_INSTALL_PREFIX="$LLVM_PREFIX"
-    -DLLVM_DEFAULT_TARGET_TRIPLE="$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"$SYSROOT/include"
-    -DCMAKE_CXX_FLAGS='--std=gnu++11'
-    -DLLVM_TOOL_LTO_BUILD=Off
-    -DLLVM_TOOL_LLVM_PROFDATA_BUILD=Off
-    -DLLVM_TOOL_LLI_BUILD=Off
-    -DLLVM_TOOL_RDOBJ_BUILD=Off
-    -DLLVM_TOOL_LLVM_COV_BUILD=Off
-    -DLLVM_TOOL_LLVM_XRAY_BUILD=Off
-    -DLLVM_TOOL_LLVM_LTO2_BUILD=Off
-    -DLLVM_TOOL_LLVM_LTO_BUILD=Off
-    -DLLVM_TOOL_LLVM_RTDYLD_BUILD=Off
-)
-
 function recipe_version {
     printf "r%s.%s" "$(git rev-list --count HEAD)" "$(git rev-parse --short HEAD)"
     skip=1
 }
 
-function recipe_fetch {
-    if [ ! -d "$LLVM_SOURCE" ]
-    then
-        git clone "$LLVM_GIT" -b redox --depth 1 "$LLVM_SOURCE"
-    fi
-
-    pushd "$LLVM_SOURCE" > /dev/null
-    git remote set-url origin "$LLVM_GIT"
-    git fetch origin
-    git pull
-    git submodule sync --recursive
-    git submodule update --init --recursive
-    popd > /dev/null
-}
-
-function recipe_prepare {
-    rm -rf "$LLVM_PREFIX"
-    mkdir -p "$LLVM_PREFIX"
-
-    rm -rf "$LLVM_BUILD"
-    mkdir "$LLVM_BUILD"
-}
-
 function recipe_update {
     echo "skipping update"
     skip=1
 }
 
 function recipe_build {
-    # Build LLVM
-    pushd "$LLVM_BUILD"
-        CC=$HOST-gcc CXX=$HOST-g++ cmake "${LLVM_CMAKE_ARGS[@]}" "${LLVM_SOURCE}"
-        make -j$(nproc)
-        make install
-    popd
-
-    python x.py dist --config ../config.toml --jobs $(nproc) --incremental
+    unset AR AS CC CXX LD NM OBJCOPY OBJDUMP RANLIB READELF STRIP
+    python x.py dist --config ../config.toml --jobs $(nproc) --incremental --keep-stage 0
     skip=1
 }
 
@@ -97,7 +34,7 @@ function recipe_stage {
     libpath="$1/lib/rustlib/${TARGET}/lib"
     mkdir -p "$binpath" "$libpath"
     cp -fv "build/${TARGET}/stage2/bin/rustc" "$binpath"
-    ${HOST}-strip "$binpath/rustc"
+    ${STRIP} "$binpath/rustc"
     cp -fv $(find build/${TARGET}/stage2/lib/rustlib/${TARGET}/lib/ -type f | grep -v librustc) "$libpath"
     skip=1
 }