Another problem :-( :
this code
store/$(DIR)/%.c: src1/$(DIR)/%.c src2/$(DIR)/%.c
assumes that both files
src1/$(DIR)/%.c and src2/$(DIR)/%.c
exist. In my case some file in src1 or src2 may not exist (*** no rule to make
target src1(or 2)/$(DIR)/somefile.c error ***). How can I write some generic
rule to indicate that store/$(DIR)/%.c depends only on one of 2 files in the
source folders?
Thanks for your help guys.
Dave Korn wrote:
Boris Godin wrote on 11 June 2008 17:00:
Guys, i have a new problem:
this code transforms all into one single line,
$(foreach DIR,$(DIRS_SOURCES),\
store/$(DIR)/%.c: src1/$(DIR)/%.c src2/$(DIR)/%.c; \
@echo make combination to $@;\
)
Yep. Look up how to use 'define' to make a multi-line variable
definition. Then use a function call to insert each value of dir into it.
It'll end up looking something roughly like this (untested):
define make_store
store/$(1)/%.c: src1/$(1)/%.c src2/$(1)/%.c;
@echo make combination to $@;
endef
$(eval $(foreach DIR,$(DIRS_SOURCES),$(call make_store,$(DIR))))
cheers,
DaveK
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