Re: [committed] Use host fragment for PPC-Darwin stage1_cflags

[Paolo Bonzini <paolo dot bonzini at lu dot unisi dot ch>]

Daniel Jacobowitz wrote:
> On Tue, Dec 19, 2006 at 12:06:00PM +0100, Paolo Bonzini wrote:
> > +# The spiffy cpp-precomp chokes on some legitimate constructs in GCC
> > +# sources; use -no-cpp-precomp to get to GNU cpp.
> > +# Apple's GCC has bugs in designated initializer handling, so disable
> > +# that too.
> > +STAGE1_CFLAGS += -no-cpp-precomp -DHAVE_DESIGNATED_INITIALIZERS=0
>
> This adds a GNU make dependency for the whole target, doesn't it? 
> Which might be fine for Darwin, but src does not require GNU make in
> general.

The Autoconf manual does not mention += among the source of 
non-portabilities.  I also checked BSD make and it has '+=' (search for 
VAR_APPEND) since 1993 (revision 1.1):

http://cvsweb.netbsd.org/bsdweb.cgi/src/usr.bin/make/parse.c?annotate=1.126

The GNU make manual says:

* The `+=' syntax to append to the value of a variable comes from
SunOS 4 `make'.  *Note Appending More Text to Variables: Appending.

If anybody knows of a host (HPUX, Tru64, IRIX) that does not have it, 
please tell me.

Paolo