Re: [Qemu-devel] [PATCH] CPPFLAGS+= in Makefile.target

[Ian Jackson]

Paul Brook writes ("Re: [Qemu-devel] [PATCH] CPPFLAGS+= in Makefile.target"):
> In that case you should always provide a definition in config-host.mak.
> Under some circumstances make may inherit initial values from elsewhere.

What circumstances ?  CPPFLAGS+= overrides (discards) values in the
environment as well as ones from the command line.

Providing a definition in config-host.mak involves duplicating the
value, which can't be right.  If there's no other way to do it then
there should be a reference to USER_CPPFLAGS or some such but frankly
that's a pain and overkill.

Ian.