Re: Problem with implicit rule for .o files and overriding of CXXFLAGS.
Sorry for the CC. I was away and missed the discussion :)
Am Mittwoch, den 25.06.2008, 13:24 +0900 schrieb Charles Plessy:
> while working on an update to the `proda' package, I realised that a
> compilation option, DVERSION="\"1.00\"", was discarded during the build
> of the Debian binary package. The reason is very simple:
> OTHERFLAGS = -DVERSION="\"1.00\""
> CXXFLAGS = -g -W -Wall -pedantic $(OTHERFLAGS)
Talk to the upstream author to use e.g. (GNU make specific):
override CXXFLAGS += $(OTHERFLAGS)
or tell him to better use one of the following:
DEFS += -DVERSION="\"1.00\""
AM_CPPFLAGS += -DVERSION="\"1.00\""
foo_CPPFLAGS += -DVERSION="\"1.00\""
These are normnally not overwritten by the user and the correct place to
leave a -D switch. There is enough documentation out there to find the
> My problem is that I do not know the contents of the implicit rule
> building the .o files from the .h files, nor how I can tell to make to
> add $(OTHERFLAGS) to this implicite rule.
> Any idea ?
Read /usr/share/doc/make-doc/. There you find all built-in rules.
(Sorry, if you already got this information - I'm still