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|
########################################################################
# Use TARG_COMPILER_FAMILY to set the C compiler name
ifeq ($(TARG_COMPILER_FAMILY),gcc)
CC := gcc
endif
ifeq ($(TARG_COMPILER_FAMILY),intel)
CC := icc
endif
########################################################################
# Use O_DIR as equal to $(TARG)/ so that if TARG is empty then O_DIR
# will be empty. But if $(TARG) as a value then O_DIR will have a
# trailing slash.
ifneq ($(TARG),)
override O_DIR := $(TARG)/
endif
########################################################################
# Use TARG_BUILD_SCENARIO to set the compiler options for either
# debug or optimize.
ifeq ($(TARG_BUILD_SCENARIO),dbg)
CF := -g -O0
endif
ifeq ($(TARG_BUILD_SCENARIO),opt)
CF := -O3
endif
DEPENDENCY_FLAG := -MM
EXEC := $(O_DIR)hello
SRC := main.c hello.c
OBJS := $(patsubst %.c, $(O_DIR)%.o, $(SRC))
override CFLAGS := $(CFLAGS) $(CF)
all: $(O_DIR)
$(MAKE) _all
_all: $(EXEC)
$(O_DIR):
mkdir -p $(O_DIR)
$(EXEC): $(OBJS)
$(LINK.c) -o $@ $^
neat:
$(RM) *~
clean: neat
$(RM) $(OBJS)
clobber: clean
$(RM) $(EXEC)
$(RM) -r $(TARG) $(TARGET_PREFIX)
######################## compilation rules ###############################
$(O_DIR)%.o : %.c
$(COMPILE.c) -o $@ -c $<
$(O_DIR)%.d: %.c
$(SHELL) -c '$(CC) $(CFLAGS) -I $(O_DIR) $(DEPENDENCY_FLAG) $< \
| sed -e '\''s;\($*\)\.o[ :]*;$$(O_DIR)\1.o $$(O_DIR)$(notdir $@) : ;g'\'' \
-e '\''s;$(O_DIR);$$(O_DIR);'\'' \
> $@; \
[ -s $@ ] || rm -f $@'
######################## Dependancies ####################################
ifneq (0,$(MAKELEVEL))
include $(patsubst %.c, $(O_DIR)%.d, $(SRC))
endif
|
