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Re: question cross-compiler

Thiemo Seufer wrote:


Brian Murphy wrote:

Frank Loeffler wrote:


export PATH=~/mips/crossdev/build/bin:$PATH
$ ./configure --prefix=~/mips/crossdev/build/ --target=mips64-linux --with-newlib --enable-threads 


Did you build binutils with the same prefix and target? You should probably
also have --with-gnu-as --with-gnu-ld here, it probably defaults to some mips assembler. 

Not needed, the mips*-linux config defaults to GNU tools.


I have just compiled a mips64-linux toolchain with the attached makefiles
(you just need to say it's for mips64-linux in Makefile.defs).


Why didn't you use the recommended way, along the way of the appended
script? It would have been much less effort, with more reliable results.
Where is the recommended way documented? Who does the recommending? The recommended way requires a libc in the process. The standard build process fails if there is no libc. I want to be able to build a toolchain without libc - kernel compilation do not require it why should it be there waiting to 
cause problems?


However it gives a lot of warnings when you try to compile 64 bit and it
seems to be configured for 32 bit despite the 64 in the name. To get 64
bit longs you need to give -mabi=64 on the commandline.


That's little surprising if you actually built for a mips32isa-elf target,
like the Makefile suggests. Btw, mips32isa-elf doesn't support n32/n64 ABI,
so it's unlikely to work in that case.
Of course I didn't I had the tar file lying there and sent that the only thing that was needed was for it to be 
configured correctly.



Thiemo


#! /bin/bash
#
TARGET=mips64-linux

CVSDIR_BINU=/bigdisk/cvs/src
CVSDIR_GCC=/bigdisk/cvs/gcc

BASEDIR=/bigdisk/combined
COMBDIR=${BASEDIR}/source
BUILDDIR=${BASEDIR}/${TARGET}/build
INSTDIR=${BASEDIR}/${TARGET}/install

set -e

mkdir -p ${BASEDIR}
mkdir -p ${BASEDIR}/${TARGET}
mkdir -p ${COMBDIR}
mkdir -p ${BUILDDIR}
mkdir -p ${INSTDIR}

if [ ! -f ${COMBDIR}/sourcestamp ]; then
	cp -a ${CVSDIR_BINU}/* ${COMBDIR}
	cp -af ${CVSDIR_GCC}/* ${COMBDIR}
	touch ${COMBDIR}/sourcestamp
fi

pushd ${BUILDDIR} >/dev/null
${COMBDIR}/configure --target=${TARGET} \
	--prefix=${INSTDIR} \
	--enable-checking \
	--enable-languages=c \
	--enable-long-long \
	--without-sid \
	--disable-threads \
	--disable-shared
popd >/dev/null

make -C ${BUILDDIR} all-binutils all-ld all-gas all-gcc all-libiberty
make -C ${BUILDDIR} install-binutils install-ld install-gas install-gcc install-libiberty

set +e

GCCTESTFLAGS="--target_board=unix compile.exp"
TESTFLAGS="--target_board=unix"

make -C ${BUILDDIR} check-gcc RUNTESTFLAGS="$GCCTESTFLAGS"
make -C ${BUILDDIR} check-gas RUNTESTFLAGS="$TESTFLAGS"
make -C ${BUILDDIR} check-ld RUNTESTFLAGS="$TESTFLAGS"
make -C ${BUILDDIR} check-binutils RUNTESTFLAGS="$TESTFLAGS"
make -C ${BUILDDIR} check-libiberty RUNTESTFLAGS="$TESTFLAGS"
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