59 lines
2.1 KiB
Bash
Executable File
59 lines
2.1 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" pkg-config module (Scripts/install-pkgconfig.sh).
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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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echo "Using swift: $swift_bin ($($swift_bin --version 2>/dev/null | head -1))"
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echo "Using arm-none-eabi headers: $include_dir"
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# --build-system native stops after compilation; the default build system
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# also tries to merge objects with the host linker, which cannot process
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# bare-metal ELF objects.
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exec "$swift_bin" build \
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--build-system native \
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--target PlaydateKit \
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--triple armv7em-none-none-eabi \
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-Xswiftc -enable-experimental-feature -Xswiftc Embedded \
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-Xswiftc -wmo \
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-Xswiftc -Osize \
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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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