[project] Update Readme and remove toolchain scripts

After hitting 700 commits last week, I thought it'd be a good time to
update the project status in the Readme. This change also pulls out the
toolchain scripts that moved to jsix-os/toolchain, and updates the
Readme about that as well.

scripts/build_sysroot.sh

@@ -1,126 +0,0 @@
-#!/bin/bash
-
-set -o errexit
-set -o errtrace
-set -o pipefail
-set -o nounset
-
-function errmsg () {
-    echo "Error: $(caller)"
-    echo "Working directory not cleaned up!"
-}
-
-trap errmsg ERR
-
-LLVM_VERSION=11
-J6_TOOLCHAINS="${J6_TOOLCHAINS:-$(realpath ~/.local/lib/jsix)}"
-CHAIN_NAME="llvm-${LLVM_VERSION}"
-LLVM_BRANCH="release/${LLVM_VERSION}.x"
-
-SYSROOT="${J6_TOOLCHAINS}/sysroots/${CHAIN_NAME}"
-
-ROOT=$(realpath ${1:-$(mktemp -d "sysroot_build.XXX")})
-OUT="${ROOT}/sysroot"
-echo "Working in ${ROOT}"
-
-if [ ! -d "${ROOT}/llvm-project" ]; then
-    echo "* Downloading LLVM ${LLVM_VERSION}"
-
-    git clone -q --depth 1 \
-        --branch "${LLVM_BRANCH}" \
-        "https://github.com/llvm/llvm-project" \
-        "${ROOT}/llvm-project"
-fi
-
-if [ -d "${OUT}" ]; then
-    rm -rf "${OUT}"
-fi
-mkdir -p "${OUT}"
-
-## Stage1: build an LLVM toolchain that doesn't rely on the host libraries,
-## compiler, runtime, etc.
-
-echo "* Configuring stage1"
-
-mkdir -p "${ROOT}/stage1"
-cmake -G Ninja \
-    -S "${ROOT}/llvm-project/llvm" \
-    -B "${ROOT}/stage1" \
-	-DCLANG_DEFAULT_RTLIB=compiler-rt \
-	-DCMAKE_BUILD_TYPE=Release \
-	-DCMAKE_C_COMPILER="clang" \
-	-DCMAKE_C_COMPILER_LAUNCHER=ccache \
-	-DCMAKE_CXX_COMPILER="clang++" \
-	-DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-	-DCMAKE_SHARED_LINKER_FLAGS="-fuse-ld=lld" \
-	-DLIBCXXABI_USE_COMPILER_RT=ON \
-	-DLIBCXXABI_USE_LLVM_UNWINDER=ON \
-	-DLIBCXX_CXX_ABI=libcxxabi  \
-	-DLIBUNWIND_USE_COMPILER_RT=ON \
-	-DLLVM_BUILD_TOOLS=OFF \
-	-DLLVM_ENABLE_BINDINGS=OFF \
-	-DLLVM_ENABLE_PROJECTS="clang;lld;libcxx;libcxxabi;libunwind;compiler-rt" \
-	-DLLVM_INCLUDE_BENCHMARKS=OFF \
-	-DLLVM_INCLUDE_EXAMPLES=OFF \
-	-DLLVM_INCLUDE_TESTS=OFF \
-	-DLLVM_INCLUDE_UTILS=OFF \
-	-DLLVM_TARGETS_TO_BUILD="X86" \
-	-DLLVM_USE_LINKER="lld" \
-	2>&1 > "${ROOT}/configure_stage1.log"
-
-echo "* Building stage1"
-
-ninja -C "${ROOT}/stage1" -v > "${ROOT}/build_stage1.log"
-STAGE1="${ROOT}/stage1/bin"
-
-## Stage2: build the sysroot libraries with the stage1 toolchain
-
-echo "* Configuring stage2"
-
-mkdir -p "${ROOT}/stage2"
-cmake -G Ninja \
-    -S "${ROOT}/llvm-project/llvm" \
-    -B "${ROOT}/stage2" \
-	-DCMAKE_BUILD_TYPE=Release \
-	-DCMAKE_C_COMPILER="${STAGE1}/clang" \
-	-DCMAKE_C_COMPILER_LAUNCHER=ccache \
-	-DCMAKE_CXX_COMPILER="${STAGE1}/clang++" \
-	-DCMAKE_CXX_COMPILER_LAUNCHER=ccache \
-	-DCMAKE_INSTALL_PREFIX="${OUT}" \
-	-DCMAKE_SHARED_LINKER_FLAGS="-fuse-ld=${STAGE1}/ld.lld" \
-	-DLIBCXXABI_ENABLE_STATIC_UNWINDER=ON \
-	-DLIBCXXABI_USE_COMPILER_RT=ON \
-	-DLIBCXXABI_USE_LLVM_UNWINDER=ON \
-	-DLIBCXX_CXX_ABI=libcxxabi  \
-	-DLIBCXX_INCLUDE_BENCHMARKS=OFF \
-	-DLIBUNWIND_USE_COMPILER_RT=ON \
-	-DLLVM_DEFAULT_TARGET_TRIPLE="x86_64-unknown-elf" \
-	-DLLVM_ENABLE_BINDINGS=OFF \
-	-DLLVM_ENABLE_LIBCXX=ON \
-	-DLLVM_ENABLE_PROJECTS="libcxx;libcxxabi;libunwind" \
-	-DLLVM_INCLUDE_BENCHMARKS=OFF \
-	-DLLVM_INCLUDE_EXAMPLES=OFF \
-	-DLLVM_INCLUDE_TESTS=OFF \
-	-DLLVM_INCLUDE_TOOLS=OFF \
-	-DLLVM_INCLUDE_UTILS=OFF \
-	-DLLVM_TARGETS_TO_BUILD="X86" \
-	-DLLVM_USE_LINKER="${STAGE1}/ld.lld" \
-	2>&1 > "${ROOT}/configure_stage2.log"
-
-echo "* Building stage2"
-
-ninja -C "${ROOT}/stage2" -v > "${ROOT}/build_stage2.log"
-
-echo "* Installing stage2"
-
-ninja -C "${ROOT}/stage2" -v install/strip > "${ROOT}/install_stage2.log"
-
-echo "* Installing new sysroot"
-
-rm -rf "${SYSROOT}"
-mv "${OUT}" "${SYSROOT}"
-
-echo "* Cleaning up"
-trap - ERR
-rm -rf "${ROOT}"
-echo "Done"

scripts/readme_for_prebuilt_sysroots.md

@@ -1,14 +0,0 @@
-# jsix OS sysroot
-
-This is a pre-built sysroot for building the jsix operating system kernel,
-bootloader, and utilities. This package is provided as a convenience, and
-contains software from the following repositories.
-
-## The LLVM toolchain
-
-The LLVM sources as downloaded via git from [llvm.org][llvm] under the terms of
-the [Apache License v2.0][apache2], modified [as described here][llvmlic].
-
-[llvm]: https://llvm.org
-[apache2]: https://www.apache.org/licenses/LICENSE-2.0
-[llvmlic]: https://llvm.org/docs/DeveloperPolicy.html#new-llvm-project-license-framework