makefile: add compilation steps for host program

wasm-base/examples/Makefile

@@ -1,33 +1,67 @@
+# Paths
+WAMR_ROOT     := /opt/wamr
 WAMRC         := /opt/wamr-wamrc/wamrc
 IWASM         := /opt/wamr-iwasm/iwasm
+WAMRC_LIB     := /opt/wamr-libvmlib
+IWASM_LIB     := /opt/wamr-libiwasm
 
-WASI_SDK := /opt/wasi-sdk
-SYSROOT  := $(WASI_SDK)/share/wasi-sysroot
-CLANG    := $(WASI_SDK)/bin/clang
-CFLAGS   :=	--target=wasm32-wasi \
-			--sysroot=$(SYSROOT) \
-			-O2
+WASI_ROOT     := /opt/wasi-sdk
+WASI_CC       := $(WASI_ROOT)/bin/clang
+WASI_CFLAGS   := --target=wasm32-wasi \
+		         --sysroot=$(WASI_ROOT)/share/wasi-sysroot \
+		         -O0 -g -Wall
 
+# Embedding
+EMBED_CC      := gcc
+EMBED_INCL    := -I$(WAMR_ROOT)/core/iwasm/include \
+                 -I$(WAMR_ROOT)/core/iwasm/common \
+				 -I$(WAMR_ROOT)/core/shared/platform/linux \
+				 -I$(WAMR_ROOT)/core/shared/utils \
+				 -I$(WAMR_ROOT)/core/shared/utils/uncommon
+EMBED_SOURCES := $(WAMR_ROOT)/core/shared/utils/uncommon/bh_read_file.c
+EMBED_CFLAGS  := -O0 -g -Wall $(EMBED_INCL) $(EMBED_SOURCES)
+AOT_LDFLAGS   := -Wl,-rpath,$(WAMRC_LIB)
+AOT_LDLIBS    := -L$(WAMRC_LIB) -lvmlib -lm
+INTER_LDFLAGS := -Wl,-rpath,$(IWASM_LIB)
+INTER_LDLIBS  := -L$(IWASM_LIB) -liwasm -lm
+
+# Files
 SRCS          := $(wildcard *.c)
 WASMS         := $(SRCS:.c=.wasm)
 AOTS          := $(WASMS:.wasm=.aot)
+OBJS          := $(SRCS:.c=.o)
+DEPS          := $(OBJS:.o=.d)
 
-.PHONY: build-all build-wasms build-aots clean
 
-build-all: build-wasms build-aots
+.PHONY: all build-wasms build-aots clean embed_host
+
+all: build-wasms build-aots embed_host
 
 # Compile to wasm bytecode using wasi-sdk
 build-wasms: $(WASMS)
 
 %.wasm: %.c
-	$(CLANG) $(CFLAGS) $< -o $@
+	$(WASI_CC) $(WASI_CFLAGS) $< -o $@
 
 # Compile ahead-of-time module using wamrc
 build-aots: $(AOTS)
 
 %.aot: %.wasm
 	$(WAMRC) -o $@ $<
+	# $(WAMRC) --enable-wasi -o $@ $<
 
 clean:
 	rm -f *.wasm
 	rm -f *.aot
+	rm -f *.d
+	rm -f *.o
+
+# Compile to C-embedded
+# embed: $(OBJS)
+# 	$(EMBED_CC) $(OBJS) -o embed $(AOT_LDFLAGS) $(AOT_LDLIBS)
+
+# %.o: %.c
+# 	$(EMBED_CC) $(EMBED_CFLAGS) -o $@ $<
+
+embed_host:
+	$(EMBED_CC) $(EMBED_CFLAGS) embed/host.c -o host $(INTER_LDFLAGS) $(INTER_LDLIBS)