1# Makefile to compile the helloworld app for esptool tests
2
3# Prefix for each cross compiler (can include a directory path)
4# These can be overriden via environment variables or on the make command line
5CROSS_8266 ?= xtensa-lx106-elf-
6CROSS_32 ?= xtensa-esp32-elf-
7CROSS_32S2 ?= xtensa-esp32s2-elf-
8CROSS_32S3 ?= xtensa-esp32s3-elf-
9CROSS_32C3 ?= riscv32-esp-elf-
10
11# Pass V=1 to see the commands being executed by make
12ifneq ("$(V)","1")
13Q = @
14endif
15
16APP = hello_world
17SRCS = main.c
18
19BUILD_DIR = build
20
21APP_ELF_8266 = $(BUILD_DIR)/$(APP)_8266.elf
22APP_ELF_32 = $(BUILD_DIR)/$(APP)_32.elf
23APP_ELF_32S2 = $(BUILD_DIR)/$(APP)_32s2.elf
24APP_ELF_32S3_BETA_2 = $(BUILD_DIR)/$(APP)_32s3beta2.elf
25APP_ELF_32S3 = $(BUILD_DIR)/$(APP)_32s3.elf
26APP_ELF_32C3 = $(BUILD_DIR)/$(APP)_32c3.elf
27
28.PHONY: all clean
29
30all: $(APP_ELF_8266) $(APP_ELF_32) $(APP_ELF_32S2)
31
32$(BUILD_DIR):
33	$(Q) mkdir $@
34
35CFLAGS = -std=c99 -Wall -Werror -Os \
36         -mtext-section-literals -mlongcalls -nostdlib -fno-builtin -flto \
37         -Wl,-static -g -ffunction-sections -Wl,--gc-sections -Iinclude -Lld
38CFLAGS_ESP32C3 = -std=c99 -Wall -Werror -Os \
39		 -march=rv32imc -msmall-data-limit=0 \
40         -nostdlib -fno-builtin -flto \
41         -Wl,-static -g -ffunction-sections -Wl,--gc-sections -Iinclude -Lld
42LDLIBS = -lgcc
43
44$(APP_ELF_8266): $(SRCS) $(SRCS_8266) $(BUILD_DIR) ld/app_8266.ld | Makefile
45	@echo "  CC(8266)   $^ -> $@"
46	$(Q) $(CROSS_8266)gcc $(CFLAGS) -DESP8266=1 -Tapp_8266.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
47
48$(APP_ELF_32): $(SRCS) $(BUILD_DIR) ld/app_32.ld | Makefile
49	@echo "  CC(32)   $^ -> $@"
50	$(Q) $(CROSS_32)gcc $(CFLAGS) -DESP32=1 -Tapp_32.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
51
52$(APP_ELF_32S2): $(SRCS) $(BUILD_DIR) ld/app_32s2.ld
53	@echo "  CC(32S2)   $^ -> $@"
54	$(Q) $(CROSS_32S2)gcc $(CFLAGS) -DESP32S2=1 -Tapp_32s2.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
55
56$(APP_ELF_32S3_BETA_2): $(SRCS) $(BUILD_DIR) ld/app_32s3_beta_2.ld
57	@echo "  CC(32S3)   $^ -> $@"
58	$(Q) $(CROSS_32S3)gcc $(CFLAGS) -DESP32S3=1 -Tapp_32s3.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
59
60$(APP_ELF_32S3): $(SRCS) $(BUILD_DIR) ld/app_32s3.ld
61	@echo "  CC(32S3)   $^ -> $@"
62	$(Q) $(CROSS_32S3)gcc $(CFLAGS) -DESP32S3=1 -Tapp_32s3.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
63
64$(APP_ELF_32C3): $(SRCS) $(BUILD_DIR) ld/app_32c3.ld
65	@echo "  CC(32C3)   $^ -> $@"
66	$(Q) $(CROSS_32C3)gcc $(CFLAGS_ESP32C3) -DESP32C3=1 -Tapp_32c3.ld -Wl,-Map=$(@:.elf=.map) -o $@ $(filter %.c, $^) $(LDLIBS)
67
68clean:
69	$(Q) rm -rf $(BUILD_DIR)
70