Experiment with manual binary generation

Author: arik-so

xcode/build-libldk-manual.sh

@@ -0,0 +1,101 @@
+#!/bin/bash
+
+# When building from Xcode we want to ensure that `cargo` is in PATH.
+# as a convenience, add the default cargo install location
+export PATH=/usr/local/bin:/usr/bin:/bin:/usr/sbin:/sbin
+export PATH="$PATH:${HOME}/.cargo/bin"
+
+LDK_DIRECTORY=$1 # directory to compile the C bindings in
+C_BINDINGS_SOURCE_DIRECTORY="${LDK_DIRECTORY}/lightning-c-bindings"
+
+usage() {
+	echo "USAGE: path/to/ldk-c-bindings"
+	exit 1
+}
+
+[ "${LDK_DIRECTORY}" = "" ] && echo "Usage: ./compile_dependency_binaries.sh /path/to/ldk-c-bindings" && exit 1;
+[ ! -d "${LDK_DIRECTORY}" ] && echo "Provided directory does not exist" && exit 1;
+
+if ! [[ -x "$(command -v cargo)" ]]; then
+    echo 'error: Unable to find cargo command. Cargo is not installed visit rustup.rs.' >&2
+    exit 127
+fi
+
+set -e # stop execution upon the first error
+
+C_BINDINGS_SOURCE_DIRECTORY="$(cd ${LDK_DIRECTORY}; pwd)/lightning-c-bindings"
+BUILT_PRODUCTS_DIR="`pwd`/binaries" # directory to copy the shared library and headers into
+
+
+TARGET_NAME="libldk"
+
+if [[ $PLATFORM_NAME = "" ]]; then
+	# default for building with xcodebuild
+	PLATFORM_NAME="macosx"
+fi
+
+if [[ $PLATFORM_NAME = "macosx" ]]; then
+	if [[ $LLVM_TARGET_TRIPLE_SUFFIX = "-macabi" ]]; then
+		RUST_TARGET_OS="ios-macabi"
+	else
+		RUST_TARGET_OS="darwin"
+	fi
+else
+	echo "PLATFORM_NAME ${PLATFORM_NAME}"
+	RUST_TARGET_OS="ios"
+fi
+
+# Clean any pre-existing static libraries that doesn't align with what we're currently trying to build
+
+declare -a ARCHS=("arm64")
+
+for ARCH in $ARCHS
+do
+	if [[ $(lipo -info "${BUILT_PRODUCTS_DIR}/${TARGET_NAME}" 2>&1) != *"${ARCH}"* ]]; then
+		rm -f "${BUILT_PRODUCTS_DIR}/${TARGET_NAME}"
+	fi
+done
+
+if [[ $CONFIGURATION = "Debug" ]]; then
+	RUST_CONFIGURATION="debug"
+	RUST_CONFIGURATION_FLAG=""
+else
+	RUST_CONFIGURATION="release"
+	RUST_CONFIGURATION_FLAG="--release"
+fi
+
+pushd $C_BINDINGS_SOURCE_DIRECTORY
+export RUSTFLAGS='--cfg=c_bindings'
+
+rustup override set nightly
+cargo clean
+
+EXECUTABLES=()
+for ARCH in $ARCHS
+do
+	RUST_ARCH=$ARCH
+	if [[ $RUST_ARCH = "arm64" ]]; then
+		RUST_ARCH="aarch64"
+		# This is because iOS Simulator builds for x86_64 is `x86_64-apple-ios`, while arm64 is `aarch64-apple-ios-sim`
+		if [[ $PLATFORM_NAME = "iphonesimulator" ]]; then
+			RUST_TARGET_OS="ios-sim"
+		fi
+	else
+		if [[ $PLATFORM_NAME = "iphonesimulator" ]]; then
+			RUST_TARGET_OS="ios"
+		fi
+	fi
+
+	echo "BUILDING ${RUST_ARCH}-apple-${RUST_TARGET_OS}"
+
+	cargo build -Z build-std=panic_abort,std --features "std" --target "${RUST_ARCH}-apple-${RUST_TARGET_OS}" $RUST_CONFIGURATION_FLAG
+	EXECUTABLES+=("$C_BINDINGS_SOURCE_DIRECTORY/target/${RUST_ARCH}-apple-${RUST_TARGET_OS}/${RUST_CONFIGURATION}/${TARGET_NAME}.a")
+
+	mkdir -p "${BUILT_PRODUCTS_DIR}/${ARCH}"
+	cp "$C_BINDINGS_SOURCE_DIRECTORY/target/${RUST_ARCH}-apple-${RUST_TARGET_OS}/${RUST_CONFIGURATION}/${TARGET_NAME}.a" "${BUILT_PRODUCTS_DIR}/${ARCH}"
+done
+
+rustup override unset
+
+mkdir -p "${BUILT_PRODUCTS_DIR}"
+xcrun --sdk $PLATFORM_NAME lipo -create "${EXECUTABLES[@]}" -output "${PROJECT_DIR}/${TARGET_NAME}.a"