Use host GCC for non-003 devs.

ch32v003fun/ch32v003fun.mk

@@ -33,6 +33,7 @@ ifeq ($(TARGET_MCU),CH32V003)
 	GENERATED_LD_FILE?=$(CH32V003FUN)/generated_ch32v003.ld
 	TARGET_MCU_LD:=0
 	LINKER_SCRIPT?=$(GENERATED_LD_FILE)
+	LDFLAGS+=-L$(CH32V003FUN)/../misc -lgcc
 else
 	ifeq ($(findstring CH32V10,$(TARGET_MCU)),CH32V10)
 		include $(CH32V003FUN)/ch32v10xfun.mk
@@ -45,7 +46,7 @@ else
 	endif
 endif
 
-LDFLAGS+=-T $(LINKER_SCRIPT) -Wl,--gc-sections -L$(CH32V003FUN)/../misc -lgcc
+LDFLAGS+=-T $(LINKER_SCRIPT) -Wl,--gc-sections
 
 ifeq ($(TARGET_MCU), CH32V003)
 

ch32v003fun/ch32v10xfun.mk

@@ -26,6 +26,7 @@ else ifeq ($(findstring C6, $(TARGET_MCU_PACKAGE)), C6)
 endif
 
 TARGET_MCU_LD:=1
+LDFLAGS+=-lgcc
 
 GENERATED_LD_FILE:=$(CH32V003FUN)/generated_$(TARGET_MCU_PACKAGE).ld
 LINKER_SCRIPT:=$(GENERATED_LD_FILE)

ch32v003fun/ch32v20xfun.mk

@@ -53,6 +53,7 @@ else
 endif
 
 TARGET_MCU_LD:=2
+LDFLAGS+=-lgcc
 
 GENERATED_LD_FILE:=$(CH32V003FUN)/generated_$(TARGET_MCU_PACKAGE).ld
 LINKER_SCRIPT:=$(GENERATED_LD_FILE)

ch32v003fun/ch32v30xfun.mk

@@ -39,6 +39,7 @@ else
 endif
 
 TARGET_MCU_LD:=3
+LDFLAGS+=-lgcc
 
 GENERATED_LD_FILE:=$(CH32V003FUN)/generated_$(TARGET_MCU_PACKAGE).ld
 LINKER_SCRIPT:=$(GENERATED_LD_FILE)