Re: Anyone cross-bootstrap a GCC compiler onto a linux board?

[Dan Kegel <dank at kegel dot com>]

Peter Barada wrote:
> ... I'm thinking this would be an easier approach
> than having to hack up software packages Makefiles to get them to
> cross-compile.

Everybody says that, but the fact is, you *don't* have to hack
up their Makefiles.  If the Makefile is well-written, you
simply have to set CC and CFLAGS on the commandline when
running make or configure.  I write a little Makefile or shell script to
unpack sources, configure, and make, and usually it works
right off.  About a third of the time I have to think,
and about a sixth of the time I have to fix a bug in the
Makefile that caused this not to work; I always submit the
change back to the project in question, so others won't have
to struggle.

Here's an example of such a Makefile (which just invokes the
real Makefile):

NAME=nc110
DEST=/home3/dank/wk/ixos/dap/sh4-release/host/usr/bin

PROGS_BIN:= $(DEST)/nc
PROGS   := sh4/nc

all: $(PROGS)

install: $(PROGS_BIN)

uninstall:
        rm -f $(PROGS_BIN)

clean:
        rm -rf sh4

sh4/Makefile: /home3/dank/ixia_tarballs/$(NAME).tgz
        test -d sh4 || mkdir sh4
        cd sh4 ; \
                tar -xzvf  /home3/dank/ixia_tarballs/$(NAME).tgz ; \
                patch -p0 < ../nc-resolv.patch
        touch sh4/Makefile

$(PROGS): sh4/Makefile
        make -C sh4 CC="/opt/cegl-1.5/hardhat/devkit/sh/sh4_le/bin/sh_sh4_le-gcc -ml -m4 -DLINUX -lresolv" nc

$(DEST)/nc: sh4/nc
        if test -f $@ ; then chmod +w $@ ; fi
        cp $< $@

--
Dan Kegel
http://www.kegel.com
http://counter.li.org/cgi-bin/runscript/display-person.cgi?user=78045


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