javier
c5037dd716
This PR contains the work done to update the library and the attached example project to use the Swift 6.4 computer as a minimum supported version and also, to use the latest features introduced in it. Reviewed-on: #1 Co-authored-by: Javier Cicchelli <javier@rock-n-code.com>
90 lines
3.3 KiB
Bash
Executable File
90 lines
3.3 KiB
Bash
Executable File
#!/bin/sh
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#
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# Cross-compiles the PlaydateKit target for Playdate hardware (Embedded Swift,
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# ARM Cortex-M7) as a compile-only check that the bindings stay within the
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# Embedded Swift subset. Linking is left to game projects.
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#
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# Requirements:
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# - A Swift toolchain with the embedded stdlib for armv7em-none-none-eabi
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# (a swift.org development snapshot; Xcode's toolchain does not ship it).
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# Override the binary with SWIFT_BIN, otherwise `swift` from PATH is used.
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# - Arm GNU toolchain (arm-none-eabi) C headers, because pd_api.h includes
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# libc headers that bare-metal builds resolve against newlib. Override the
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# directory with ARM_NONE_EABI_INCLUDE, otherwise common install locations
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# are searched.
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# - The Playdate SDK, located via $PLAYDATE_SDK_PATH (default
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# ~/Developer/PlaydateSDK), for pd_api.h.
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#
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# The module is compiled with swiftc directly rather than `swift build`:
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# SwiftPM's default build system links the target's objects with Darwin
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# linker flags even for bare-metal ELF targets, which neither ld64 nor
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# ld.lld accept, and the native build system that stopped after compiling
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# is deprecated.
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set -eu
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swift_bin="${SWIFT_BIN:-swift}"
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include_dir="${ARM_NONE_EABI_INCLUDE:-}"
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if [ -z "$include_dir" ]; then
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for candidate in \
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/usr/local/playdate/gcc-arm-none-eabi-*/arm-none-eabi/include \
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/Applications/ArmGNUToolchain/*/arm-none-eabi/arm-none-eabi/include \
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/usr/lib/arm-none-eabi/include \
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/usr/include/newlib; do
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if [ -f "$candidate/stdlib.h" ]; then
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include_dir="$candidate"
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break
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fi
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done
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fi
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if [ -z "$include_dir" ] || [ ! -f "$include_dir/stdlib.h" ]; then
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echo "error: arm-none-eabi C headers not found." >&2
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echo "Install the Arm GNU toolchain or set ARM_NONE_EABI_INCLUDE." >&2
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exit 1
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fi
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repo_root="$(cd "$(dirname "$0")/.." && pwd)"
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swiftc_bin="$(dirname "$(command -v "$swift_bin")")/swiftc"
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sdk_path="${PLAYDATE_SDK_PATH:-$HOME/Developer/PlaydateSDK}"
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output_dir="$repo_root/.build/embedded"
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if [ ! -f "$sdk_path/C_API/pd_api.h" ]; then
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echo "error: pd_api.h not found under '$sdk_path/C_API'." >&2
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echo "Install the Playdate SDK or set PLAYDATE_SDK_PATH." >&2
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exit 1
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fi
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echo "Using swiftc: $swiftc_bin ($("$swiftc_bin" --version 2>/dev/null | head -1))"
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echo "Using arm-none-eabi headers: $include_dir"
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echo "Using Playdate SDK: $sdk_path"
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mkdir -p "$output_dir"
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# The upcoming features mirror the target's swiftSettings in Package.swift.
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find "$repo_root/Sources/PlaydateKit" -name '*.swift' -exec "$swiftc_bin" \
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-module-name PlaydateKit \
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-parse-as-library \
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-swift-version 6 \
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-enable-upcoming-feature ExistentialAny \
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-enable-upcoming-feature InternalImportsByDefault \
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-enable-upcoming-feature MemberImportVisibility \
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-target armv7em-none-none-eabi \
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-enable-experimental-feature Embedded \
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-wmo \
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-Osize \
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-I "$repo_root/Sources/CPlaydate" \
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-Xcc -I"$sdk_path/C_API" \
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-Xcc -I"$include_dir" \
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-Xcc -mcpu=cortex-m7 \
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-Xcc -mfloat-abi=hard \
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-Xcc -mfpu=fpv5-sp-d16 \
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-Xcc -fshort-enums \
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-module-cache-path "$output_dir/module-cache" \
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-emit-module -emit-module-path "$output_dir/PlaydateKit.swiftmodule" \
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-c -o "$output_dir/PlaydateKit.o" \
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{} +
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echo "Compiled $output_dir/PlaydateKit.o"
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