Re: Building gcc for an os less system

[Peter Barada <peter at baradas dot org>]

>On executing the make command, I get the following error
>
>In file included from ../../../../gcc-3.1/libstdc++-v3/libsupc++/eh_alloc.cc:34:
>/nfs/iadusr02/vsankara/xscale-gnu/build-gcc/xscale-elf/libstdc++-v3/include/cstdlib:86: `
>   div_t' not declared
>/nfs/iadusr02/vsankara/xscale-gnu/build-gcc/xscale-elf/libstdc++-v3/include/cstdlib:87: `
>   ldiv_t' not declared
>/nfs/iadusr02/vsankara/xscale-gnu/build-gcc/xscale-elf/libstdc++-v3/include/cstdlib:97: `
>   div' not declared
>/nfs/iadusr02/vsankara/xscale-gnu/build-gcc/xscale-elf/libstdc++-v3/include/cstdlib:102: `
>   ldiv' not declared
>
Ahh, the dreaded div_t undeclared error...  Let me look around my
notes... Yes, see this message for a better explanation.

http://gcc.gnu.org/ml/gcc/2003-05/msg01998.html

The following is from my Makefile to build newlib systems:

#
# gcc-3.x is broken in that it fixinc's stdlib.h which is wrong since
# newlib already supplied a good stdlib.h  See
# http://gcc.gnu.org/ml/gcc/2003-05/msg01998.html
#
fix-headers:
	cd ${PREFIX}/${TARGET}/sys-include; \
	ln -sf ../include/stdlib.h stdlib.h; \
	ln -sf ../include/unistd.h unistd.h; \
	ln -sf ../include/string.h string.h; \
	ln -sf ../include/limits.h limits.h;


This is invoked after newlib is installed and *before* gcc is
configure for a C++ compiler.  PREFIX and TARGET are defined from your
command line for the configures:

   /path/to/gcc-x.x.x/configure --prefix=${PREFIX} --target=${PREFIX}

In your case, PREFIX=<bin-directory>/xscale-elf, and TARGET=xscale-elf

-- 
Peter Barada
peter@baradas.org

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