Hello Christophe,

The issue is fixed by using ct-ng-linaro-1.13.1-4.8-2014.04 with " --disable-multilib --with-system-zlib"

The exact command line of error has " -mfloat-abi=soft", even the gcc was configured using " ct-ng linaro-arm-linux-gnueabihf"

[ALL ] /projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/arm-linux-gnueabihf/build/build-cc/./gcc/xgcc -B/projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/arm-linux-gnueabihf/build/build-cc/./gcc/ -B/projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/bin/ -B/projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/lib/ -isystem /projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/include -isystem /projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/sys-include -O2 -g -pipe -fno-stack-protector -U_FORTIFY_SOURCE -marm -march=armv4t -mfloat-abi=soft -O2 -O2 -g -pipe -fno-stack-protector -U_FORTIFY_SOURCE -DIN_GCC -DCROSS_DIRECTORY_STRUCTURE -W -Wall -Wwrite-strings -Wcast-qual -Wstrict-prototypes -Wmissing-prototypes -Wold-style-definition -isystem ./include -fPIC -fno-inline -g -DIN_LIBGCC2 -fbuilding-libgcc -fno-stack-protector -fPIC -fno-inline -I. -I. -I../../.././gcc -I/projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/src/gcc-linaro-4.8-2014.01/libgcc -I/projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/src/gcc-linaro-4.8-2014.01/libgcc/. -I/projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/src/gcc-linaro-4.8-2014.01/libgcc/../gcc -I/projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/src/gcc-linaro-4.8-2014.01/libgcc/../include -DHAVE_CC_TLS -o _muldi3.o -MT _muldi3.o -MD -MP -MF _muldi3.dep -DL_muldi3 -c /projects/broadcom-linux/joelz/r/linaro-gcc-build/.build/src/gcc-linaro-4.8-2014.01/libgcc/libgcc2.c -fvisibility=hidden -DHIDE_EXPORTS

Thanks,

Joel

-----Original Message----- From: Christophe Lyon [mailto:christophe.lyon@linaro.org] Sent: Sunday, September 14, 2014 6:23 PM To: Joel (Xi Zhou) Zhou Cc: linaro-toolchain@lists.linaro.org Subject: Re: Toolchain for kernel 2.6.36

Hello Joel

Could you provide us with: - the exact command line used (the one calling GCC, with all the flags) - the output of gcc -v the see how it was configured

From what you say it looks like your compiler is currently configured to generated hard-float code by default, and that you are compiling a module with -mfloat-abi=soft while the compiler has no support for multilibs.

Christophe

On 12 September 2014 20:10, Joel (Xi Zhou) Zhou joel.zhou@broadcom.com wrote:

Hi all,

I'm using ct-ng to rebuild Linaro toolchain (arm-linux-gnueabihf ) for Linux kernel 2.6.36. Ct-ng version: ct-ng-linaro-1.13.1-4.8-2014.01-01

There is a “FATAL: Kernel too old” message after mounting the rootfs. It turns out the default config using pre-built sysroot from Linaro website. After setting " CT_PREBUILT_SYSROOT=n" to build sysroot with lower kernel version, I get the following error: [EXTRA] Building final compiler [ERROR] /projects/broadcom-linux/joelz/opt/gcc-linaro-arm-linux-2.6-gnueabihf/arm-linux-gnueabihf/libc/usr/include/gnu/stubs.h:7:29: fatal error: gnu/stubs-soft.h: No such file or directory [ERROR] make[5]: *** [_muldi3.o] Error 1 [ERROR] make[4]: *** [multi-do] Error 1

I tried to put " -mfloat-abi=hard" as CFLAG in different place, still can't pass this error.

If you have any idea how to fix it, please let me know.

Thanks, Joel

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