我最近从GNU make文档中发现了这个引用eval函数的示例代码.我真的很喜欢它,但是当我试图在我的机器上测试(make 3.81 / Debian)时,它所做的只是尝试链接服务器,而不是首先编译c文件？为什么？使3.81不兼容吗？
外壳输出：
$make cc -o server cc: no input files
码：
PROGRAMS = server client
server_OBJS = server.o server_priv.o server_access.o
server_LIBS = priv protocol
client_OBJS = client.o client_api.o client_mem.o
client_LIBS = protocol
# Everything after this is generic
.PHONY: all
all: $(PROGRAMS)
define PROGRAM_template =
$(1): $$($(1)_OBJS) $$($(1)_LIBS:%=-l%)
ALL_OBJS += $$($(1)_OBJS)
endef
$(foreach prog,$(PROGRAMS),$(eval $(call PROGRAM_template,$(prog))))
$(PROGRAMS):
$(LINK.o) $^ $(LDLIBS) -o $@
clean:
rm -f $(ALL_OBJS) $(PROGRAMS)
