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m32c-elf cross compiler
- From: "Peter Hull" <peterhull90 at gmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Sat, 3 Mar 2007 22:00:05 +0000
- Subject: m32c-elf cross compiler
I'm trying to build an m32c-elf toolchain, hosted on OSX.
I've downloaded binutils-2.16.94, mpfr-2.2.1, gmp-4.2.1, gcc-4.1.2 and
newlib-1.15.0 and unpacked them all into separate directories. Then I
created a build subdirectory for each of binutils, newlib and gcc.
I configured, built and installed binutils with no problems.
However the gcc build fails when it gets to building libssp. The command is:
/Users/peterhull/gnuproject/build-gcc/./gcc/xgcc
-B/Users/peterhull/gnuproject/build-gcc/./gcc/
-B/Users/peterhull/m32c-elf/bin/ -B/Users/peterhull/m32c-elf/lib/
-isystem /Users/peterhull/m32c-elf/include -isystem
/Users/peterhull/m32c-elf/sys-include -DHAVE_CONFIG_H -I.
-I../../../gcc-4.1.2/libssp -I. -Wall -O2 -g -O2 -I../mpfr-2.2.1 -MT
ssp.lo -MD -MP -MF .deps/ssp.Tpo -c ../../../gcc-4.1.2/libssp/ssp.c -o
ssp.o
The errors are:
../../../gcc-4.1.2/libssp/ssp.c: In function '__guard_setup':
../../../gcc-4.1.2/libssp/ssp.c:70: warning: implicit declaration of
function 'open'
../../../gcc-4.1.2/libssp/ssp.c:70: error: 'O_RDONLY' undeclared
(first use in this function)
../../../gcc-4.1.2/libssp/ssp.c:70: error: (Each undeclared identifier
is reported only once
../../../gcc-4.1.2/libssp/ssp.c:70: error: for each function it appears in.)
.... and many more 'undeclared' errors.
As far as I can see this is because when configure runs for libssp, it
doesn't find any of the standard headers, so (for example)
HAVE_FCNTL_H is not #defined in config.h. I assume that the libssp.a
that's being built is for m32c-elf, rather than for the host. If so,
it should be the newlib headers on the search path, rather than the
ones in /usr/include. Is this right?
Am I following the right procedure for building gcc or am I missing something?
Peter