[Buildroot] Few questions external toolchain

[Marco Trapanese]

Hi Thomas,
thank you for your clarification. Perhaps this is described in the guide 
but I didn't find it.
About the toolchain git repo I tried to set the URL as 
'git://URL_of_repo/' but it asks for a tarball.

Anyway I can live with it at the moment... I manually cloned the 
repository outside buildroot and I passed the path of the toolchain's 
root directory.

Below the relevant part of the config.log. It seems the linker cannot 
find the libraries. Should I set any environment variables? I can't see 
any other options in the nconfig menu.

configure:3133: checking for arm-buildroot-linux-gnueabi-gcc
configure:3160: result: 
/home/marco/dev/buildroot/output/host/usr/bin/arm-fsl-linux-gnueabi-gcc
configure:3429: checking for C compiler version
configure:3438: 
/home/marco/dev/buildroot/output/host/usr/bin/arm-fsl-linux-gnueabi-gcc 
--version >&5
arm-fsl-linux-gnueabi-gcc (Freescale MAD -- Linaro 2011.07 -- Built at 
2011/08/10 09:20) 4.6.2 20110630 (prerelease)
Copyright (C) 2011 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

configure:3449: $? = 0
configure:3438: 
/home/marco/dev/buildroot/output/host/usr/bin/arm-fsl-linux-gnueabi-gcc 
-v >&5
Using built-in specs.
COLLECT_GCC=/home/marco/dev/fsl-linaro-toolchain/bin/arm-fsl-linux-gnueabi-gcc
COLLECT_LTO_WRAPPER=/home/marco/dev/fsl-linaro-toolchain/bin/../libexec/gcc/arm-fsl-linux-gnueabi/4.6.2/lto-wrapper
Target: arm-fsl-linux-gnueabi
Configured with: 
/work/build/.build/src/gcc-linaro-4.6-2011.06-0/configure 
--build=i686-build_pc-linux-gnu --host=i686-build_pc-linux-gnu 
--target=arm-fsl-linux-gnueabi --prefix=/work/fsl-linaro-toolchain-2.13 
--with-sysroot=/work/fsl-linaro-toolchain-2.13/arm-fsl-linux-gnueabi/multi-libs 
--enable-languages=c,c++ --with-pkgversion='Freescale MAD -- Linaro 
2011.07 -- Built at 2011/08/10 09:20' --enable-__cxa_atexit 
--disable-libmudflap --disable-libgomp --disable-libssp 
--with-gmp=/work/build/.build/arm-fsl-linux-gnueabi/build/static 
--with-mpfr=/work/build/.build/arm-fsl-linux-gnueabi/build/static 
--with-mpc=/work/build/.build/arm-fsl-linux-gnueabi/build/static 
--with-ppl=/work/build/.build/arm-fsl-linux-gnueabi/build/static 
--with-cloog=/work/build/.build/arm-fsl-linux-gnueabi/build/static 
--with-libelf=/work/build/.build/arm-fsl-linux-gnueabi/build/static 
--with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic 
-lm -L/work/build/.build/arm-fsl-linux-gnueabi/build/static/lib -lpwl' 
--enable-threads=posix --enable-target-optspace --enable-plugin 
--enable-multilib 
--with-local-prefix=/work/fsl-linaro-toolchain-2.13/arm-fsl-linux-gnueabi/multi-libs 
--disable-nls --enable-c99 --enable-long-long --with-system-zlib
Thread model: posix
gcc version 4.6.2 20110630 (prerelease) (Freescale MAD -- Linaro 2011.07 
-- Built at 2011/08/10 09:20)
configure:3449: $? = 0
configure:3438: 
/home/marco/dev/buildroot/output/host/usr/bin/arm-fsl-linux-gnueabi-gcc 
-V >&5
arm-fsl-linux-gnueabi-gcc: error: unrecognized option '-V'
arm-fsl-linux-gnueabi-gcc: fatal error: no input files
compilation terminated.
configure:3449: $? = 1
configure:3438: 
/home/marco/dev/buildroot/output/host/usr/bin/arm-fsl-linux-gnueabi-gcc 
-qversion >&5
arm-fsl-linux-gnueabi-gcc: error: unrecognized option '-qversion'
arm-fsl-linux-gnueabi-gcc: fatal error: no input files
compilation terminated.
configure:3449: $? = 1
configure:3469: checking whether the C compiler works
configure:3491: 
/home/marco/dev/buildroot/output/host/usr/bin/arm-fsl-linux-gnueabi-gcc 
-D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE -D_FILE_OFFSET_BITS=64  -pipe 
-Os  -D_GNU_SOURCE -D_LARGEFILE_SOURCE -D_LARGEFILE64_SOURCE 
-D_FILE_OFFSET_BITS=64  -lm conftest.c  >&5
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find crt1.o: No such file or directory
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find crti.o: No such file or directory
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find -lm
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find -lgcc_s
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find -lc
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find -lgcc_s
/home/marco/dev/fsl-linaro-toolchain/bin/../lib/gcc/arm-fsl-linux-gnueabi/4.6.2/../../../../arm-fsl-linux-gnueabi/bin/ld: 
cannot find crtn.o: No such file or directory
collect2: ld returned 1 exit status
configure:3495: $? = 1
configure:3533: result: no



Thanks!
Marco