C_LIB),)
$(LIBDIR)/$(SRC_LIB) : $(SRC_OBJ)
>---@echo " ARCHIVE $(notdir $@)..."
>---@$(AR) rcs $@ $^
>---@echo " COPY $@ to $(SRC_BASE)/libs"
>---@cp $@ $(SRC_BASE)/libs
endif
$(SRC_OBJ) : $(OBJDIR)/%.o : %.c
>---@echo " COMPILE $(notdir $<)..."
>---@$(CC) -c $(CFLAGS) $(CPPFLAGS) $< -o $@
编译输出如下：
# make
make[1]: Entering directory `/home/Myprojects/example_make/version-3.1/src/ipc'
COMPILE ipc.c...
ARCHIVE libipc.a...
COPY ../../build/unix_dbg/lib/libipc.a to ../../libs
make[1]: Leaving directory `/home/Myprojects/example_make/version-3.1/src/ipc'
make[1]: Entering directory `/home/Myprojects/example_make/version-3.1/src/tools'
COMPILE base64.c...
COMPILE md5.c...
COMPILE tools.c...
ARCHIVE libtools.a...
COPY ../../build/unix_dbg/lib/libtools.a to ../../libs
make[1]: Leaving directory `/home/Myprojects/example_make/version-3.1/src/tools'
make[1]: Entering directory `/home/Myprojects/example_make/version-3.1/src/main'
COMPILE main.c...
LINK target_bin...
make[1]: Leaving directory `/home/Myprojects/example_make/version-3.1/src/main'
#
其中目录切换的输出仍然很多，我们可以将其关闭，这需要使用到make的参数，在make -C是指定--no-print-
directory参数。我们将顶层目录下Makefile规则修改如下：
$(BUILDDIR):
>---@echo " Create directory $@ ..."
>---mkdir -p $(BUILDDIR)/bin $(BUILDDIR)/lib
$(MODULES):
>---@$(MAKE) -C $(DIR)/$@ MODULE=$@ --no-print-directory
main:tools ipc
clean :
>---@for subdir in $(MODULES); \
>---do $(MAKE) -C $(DIR)/$$subdir MODULE=$$subdir $@ --no-print-directory; \
>---done
编译输出：
# make
COMPILE ipc.c...
ARCHIVE libipc.a...
COPY ../../build/unix_dbg/lib/libipc.a to ../../libs
COMPILE base64.c...
COMPILE md5.c...
COMPILE tools.c...
ARCHIVE libtools.a...
COPY ../../build/unix_dbg/lib/libtools.a to ../../libs
COMPILE main.c...
LINK target_bin...
# make clean
rm -f ../../build/unix_dbg/obj/ipc/ipc.o ../../build/unix_dbg/lib/libipc.a
rm -f ../../build/unix_dbg/obj/main/main.o ../../build/unix_dbg/bin/target_bin
rm -f ../../build/unix_dbg/obj/tools/base64.o ../../build/unix_dbg/obj/tools/md5.o
../../build/unix_dbg/obj/tools/tools.o ../../build/unix_dbg/lib/libtools.a
#
这样看上去输出清爽多了。其实我们也可以使用make -s 来全面禁止命令的显示。