Add cross build script to run on M1 Macs

scripts/mac-m1-cross-build.sh

@@ -0,0 +1,109 @@
+#!/usr/bin/env bash
+
+# NOTE: Run me from the root of the project! Not within the scripts directory!
+
+###############################################################################
+# TOOLCHAIN SETUP
+#
+# See: https://github.com/messense/homebrew-macos-cross-toolchains
+###############################################################################
+
+# For x86_64-unknown-linux-gnu
+export CC_x86_64_unknown_linux_gnu=x86_64-unknown-linux-gnu-gcc
+export CXX_x86_64_unknown_linux_gnu=x86_64-unknown-linux-gnu-g++
+export AR_x86_64_unknown_linux_gnu=x86_64-unknown-linux-gnu-ar
+export CARGO_TARGET_X86_64_UNKNOWN_LINUX_GNU_LINKER=x86_64-unknown-linux-gnu-gcc
+
+# For x86_64-unknown-linux-musl
+export CC_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-gcc
+export CXX_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-g++
+export AR_x86_64_unknown_linux_musl=x86_64-unknown-linux-musl-ar
+export CARGO_TARGET_X86_64_UNKNOWN_LINUX_MUSL_LINKER=x86_64-unknown-linux-musl-gcc
+
+pushd () {
+    command pushd "$@" > /dev/null
+}
+
+popd () {
+    command popd "$@" > /dev/null
+}
+
+###############################################################################
+# TARGET GENERATION
+#
+# Note: This is running on an M1 Mac and expects tooling like `lipo`
+###############################################################################
+
+TARGET_DIR="./target"
+PACKAGE_DIR="${TARGET_DIR}/package"
+
+rm -rf "${PACKAGE_DIR}"
+mkdir -p "${PACKAGE_DIR}"
+
+# Apple x86-64 on M1 Mac
+TARGET="x86_64-apple-darwin"
+echo "Building ${TARGET}"
+cargo build --release --target "${TARGET}"
+strip "${TARGET_DIR}/${TARGET}/release/distant"
+
+# Apple ARM on M1 Mac
+TARGET="aarch64-apple-darwin"
+echo "Building ${TARGET}"
+cargo build --release --target "${TARGET}"
+strip "${TARGET_DIR}/${TARGET}/release/distant"
+
+# Combine Mac executables into universal binary
+echo "Combining Mac x86 and arm into universal binary"
+lipo -create \
+    -output "${PACKAGE_DIR}/distant-macos" \
+    "${TARGET_DIR}/x86_64-apple-darwin/release/distant" \
+    "${TARGET_DIR}/aarch64-apple-darwin/release/distant"
+
+# Linux x86-64 (libc) on M1 Mac
+TARGET="x86_64-unknown-linux-gnu"
+echo "Building ${TARGET}"
+cargo build --release --target "${TARGET}"
+cp "${TARGET_DIR}/${TARGET}/release/distant" "${PACKAGE_DIR}/distant-linux64-gnu"
+x86_64-unknown-linux-musl-strip "${PACKAGE_DIR}/distant-linux64-gnu"
+
+# Linux x86-64 (musl) on M1 Mac
+TARGET="x86_64-unknown-linux-musl"
+echo "Building ${TARGET}"
+cargo build --release --target "${TARGET}"
+cp "${TARGET_DIR}/${TARGET}/release/distant" "${PACKAGE_DIR}/distant-linux64-musl"
+x86_64-unknown-linux-musl-strip "${PACKAGE_DIR}/distant-linux64-musl"
+
+###############################################################################
+# EXECUTABLE PERMISSIONS
+###############################################################################
+
+pushd "${PACKAGE_DIR}";
+for bin in *; do
+    echo "Marking ${bin} executable"
+    chmod +x "${bin}"
+done
+popd
+
+###############################################################################
+# SHA 256 GENERATION
+#
+# Note: This is running on an M1 Mac and expects tooling like `shasum`
+###############################################################################
+
+echo "Generating sha256sum index file"
+(cd "${PACKAGE_DIR}" && shasum -a 256 * > sha256sum.txt)
+
+pushd "${PACKAGE_DIR}";
+for bin in *; do
+    if [ "${bin}" != "sha256sum.txt" ]; then
+        echo "Generating sha256sum for ${bin}"
+        shasum -a 256 "${bin}" > "${bin}.sha256sum"
+    fi
+done
+popd
+
+###############################################################################
+# DISPLAY RESULTS
+###############################################################################
+
+open "${PACKAGE_DIR}"