Added a Makefile build for the HelloPlaydate example target.

.gitignore

@@ -2,6 +2,7 @@
 .build/
 /Packages
 # Example build products
+Examples/*/build
 Examples/*/Source/pdex.dylib
 *.pdx
 xcuserdata/

Examples/HelloPlaydate/Makefile

@@ -0,0 +1,26 @@
+REPO_ROOT := $(shell git rev-parse --show-toplevel)
+PRODUCT := HelloPlaydate.pdx
+include $(REPO_ROOT)/Examples/swift.mk
+
+# MARK: - Build PlayDate Wrapper Swift Module
+build/Modules/playdate_device.o: $(REPO_ROOT)/Sources/PlayDate/*.swift
+	@mkdir -p build/Modules
+	$(SWIFT_EXEC) $(SWIFT_FLAGS) $(SWIFT_FLAGS_DEVICE) -c $^ -emit-module -o $@
+
+build/Modules/playdate_simulator.o: $(REPO_ROOT)/Sources/PlayDate/*.swift
+	@mkdir -p build/Modules
+	$(SWIFT_EXEC) $(SWIFT_FLAGS) $(SWIFT_FLAGS_SIMULATOR) -c $^ -emit-module -o $@
+
+# MARK: - Build Game Swift Object
+build/game_device.o: Sources/HelloPlaydate/*.swift | build/Modules/playdate_device.o
+	$(SWIFT_EXEC) $(SWIFT_FLAGS) $(SWIFT_FLAGS_DEVICE) -c $^ -o $@
+$(OBJDIR)/pdex.elf: build/game_device.o
+OBJS += build/game_device.o
+# The wrapper object carries symbols that are not emitted into the game
+# object, such as the posix_memalign shim the Embedded Swift runtime needs.
+OBJS += build/Modules/playdate_device.o
+
+build/game_simulator.o: Sources/HelloPlaydate/*.swift | build/Modules/playdate_simulator.o
+	$(SWIFT_EXEC) $(SWIFT_FLAGS) $(SWIFT_FLAGS_SIMULATOR) -c $^ -o $@
+$(OBJDIR)/pdex.${DYLIB_EXT}: build/game_simulator.o
+SIMCOMPILER += build/game_simulator.o

Examples/swift.mk

@@ -0,0 +1,78 @@
+HEAP_SIZE      = 8388208
+STACK_SIZE     = 61800
+
+# Locate the Playdate SDK
+SDK = ${PLAYDATE_SDK_PATH}
+ifeq ($(SDK),)
+SDK = $(shell egrep '^\s*SDKRoot' ~/.Playdate/config | head -n 1 | cut -c9-)
+endif
+
+ifeq ($(SDK),)
+$(error SDK path not found; set ENV value PLAYDATE_SDK_PATH)
+endif
+
+include $(SDK)/C_API/buildsupport/common.mk
+
+# Determine the Swift toolchain by order of preference:
+#
+# 1. the presence of a TOOLCHAINS environment value
+# 2. a Swift toolchain installed for the current user (e.g. 'Install for me only')
+# 3. a Swift toolchain installed for all users (e.g. 'Install for all users on this computer')
+RELATIVE_TOOLCHAIN_PATH = Library/Developer/Toolchains/swift-latest.xctoolchain
+ifneq ($(TOOLCHAINS),)
+else ifneq ($(wildcard $(HOME)/$(RELATIVE_TOOLCHAIN_PATH)),)
+TOOLCHAINS = $(shell plutil -extract CFBundleIdentifier raw -o - $(HOME)/$(RELATIVE_TOOLCHAIN_PATH)/Info.plist)
+else ifneq ($(wildcard /$(RELATIVE_TOOLCHAIN_PATH)),)
+TOOLCHAINS = $(shell plutil -extract CFBundleIdentifier raw -o - /$(RELATIVE_TOOLCHAIN_PATH)/Info.plist)
+else
+$(error Swift toolchain not found; set ENV value TOOLCHAINS (e.g. TOOLCHAINS=org.swift.59202403121a make))
+endif
+
+GCC_INCLUDE_PATHS := $(shell $(CC) -E -Wp,-v -xc /dev/null 2>&1 | egrep '^ ' | xargs echo )
+SWIFT_EXEC := "$(shell TOOLCHAINS=$(TOOLCHAINS) xcrun -f swiftc)"
+TOOLCHAIN_PATH := $(shell echo $(SWIFT_EXEC)|sed s'/.xctoolchain.*/.xctoolchain/')
+
+$(info Using Swift toolchain "$(TOOLCHAINS)" (from $(TOOLCHAIN_PATH)))
+
+C_FLAGS := \
+	$(addprefix -I ,$(GCC_INCLUDE_PATHS)) \
+
+SWIFT_FLAGS := \
+	$(addprefix -Xcc , $(C_FLAGS)) \
+	-O \
+	-wmo -enable-experimental-feature Embedded \
+	-Xfrontend -disable-stack-protector \
+	-Xfrontend -function-sections \
+	-swift-version 6 \
+	-Xcc -DTARGET_EXTENSION \
+	-module-cache-path build/module-cache \
+	-I $(SDK)/C_API \
+	-I build/Modules \
+	-I $(REPO_ROOT)/Sources/CPlaydate \
+
+C_FLAGS_DEVICE := \
+	-mthumb \
+	-mcpu=cortex-m7 \
+	-mfloat-abi=hard \
+	-mfpu=fpv5-sp-d16 \
+	-D__FPU_USED=1 \
+	-falign-functions=16 \
+	-fshort-enums \
+
+SWIFT_FLAGS_DEVICE := \
+	$(addprefix -Xcc , $(C_FLAGS_DEVICE)) \
+	-target armv7em-none-none-eabi \
+	-Xfrontend -experimental-platform-c-calling-convention=arm_aapcs_vfp \
+	-module-alias PlayDate=playdate_device \
+
+C_FLAGS_SIMULATOR := \
+
+SWIFT_FLAGS_SIMULATOR := \
+	$(addprefix -Xcc , $(C_FLAGS_SIMULATOR)) \
+	-module-alias PlayDate=playdate_simulator \
+
+SIMCOMPILER += \
+	-nostdlib \
+	-dead_strip \
+	-Wl,-exported_symbol,_eventHandlerShim \
+	-Wl,-exported_symbol,_eventHandler \

Scripts/build-embedded.sh

@@ -53,4 +53,5 @@ exec "$swift_bin" build \
     -Xcc -I"$include_dir" \
     -Xcc -mcpu=cortex-m7 \
     -Xcc -mfloat-abi=hard \
-    -Xcc -mfpu=fpv5-sp-d16
+    -Xcc -mfpu=fpv5-sp-d16 \
+    -Xcc -fshort-enums