Making use of -mfloat-abi=hard and -mfpu=vfp/neon Codesourcery Lite 2013.05-24

floating-point embedded arm cross-compiling codesourcery
eactor picture eactor · Jun 28, 2013 · Viewed 11.3k times · Source

To make use of vfp or neon I added -mfpu=vfp and -mfloat-abi=hard to my cross compilation. The Programm is a very simple hellofloat.cpp which then doesn't compile any more with the Sourcery CodeBench Lite 2013.05-24.

#include <string>
#include <iostream>
using namespace std;
int main()
{
    double val=1.04;
    cout << "Hello Float: " << val  << endl;
}

Compile instruction:

arm-none-linux-gnueabi-g++ -o armhf-main main.cpp  -march=armv7-a  -mfloat-abi=hard -mfpu=neon

I'm confused since Codesorcery should support armhf compilation?

Error:

In file included from /home/user/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/../arm-none-linux-gnueabi/libc/usr/include/features.h:399:0,
                 from /home/user/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/../lib/gcc/arm-none-linux-gnueabi/4.7.3/../../../../arm-none-linux-gnueabi/include/c++/4.7.3/arm-none-linux-gnueabi/bits/os_defines.h:40,
                 from /home/user/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/../lib/gcc/arm-none-linux-gnueabi/4.7.3/../../../../arm-none-linux-gnueabi/include/c++/4.7.3/arm-none-linux-gnueabi/bits/c++config.h:414,
                 from /home/user/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/../lib/gcc/arm-none-linux-gnueabi/4.7.3/../../../../arm-none-linux-gnueabi/include/c++/4.7.3/string:40,
                 from main.cpp:1:
/home/user/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/../arm-none-linux-gnueabi/libc/usr/include/gnu/stubs.h:10:29: fatal error: gnu/stubs-hard.h: No such file or directory
compilation terminated.

Compiler

arm-none-linux-gnueabi-g++ -v
Using built-in specs.
COLLECT_GCC=arm-none-linux-gnueabi-g++
COLLECT_LTO_WRAPPER=/home/user/CodeSourcery/Sourcery_CodeBench_Lite_for_ARM_GNU_Linux/bin/../libexec/gcc/arm-none-linux-gnueabi/4.7.3/lto-wrapper
Target: arm-none-linux-gnueabi
Configured with: /scratch/jbrown/2013.05-arm-linux-release/src/gcc-4.7-2013.05/configure --build=i686-pc-linux-gnu --host=i686-pc-linux-gnu --target=arm-none-linux-gnueabi --enable-threads --disable-libmudflap --disable-libssp --disable-libstdcxx-pch --enable-extra-sgxxlite-multilibs --with-arch=armv5te --with-gnu-as --with-gnu-ld --with-specs='%{save-temps: -fverbose-asm} %{funwind-tables|fno-unwind-tables|mabi=*|ffreestanding|nostdlib:;:-funwind-tables} -D__CS_SOURCERYGXX_MAJ__=2013 -D__CS_SOURCERYGXX_MIN__=5 -D__CS_SOURCERYGXX_REV__=24 %{O2:%{!fno-remove-local-statics: -fremove-local-statics}} %{O*:%{O|O0|O1|O2|Os:;:%{!fno-remove-local-statics: -fremove-local-statics}}}' --enable-languages=c,c++ --enable-shared --enable-lto --enable-symvers=gnu --enable-__cxa_atexit --with-pkgversion='Sourcery CodeBench Lite 2013.05-24' --with-bugurl=https://sourcery.mentor.com/GNUToolchain/ --disable-nls --prefix=/opt/codesourcery --with-sysroot=/opt/codesourcery/arm-none-linux-gnueabi/libc --with-build-sysroot=/scratch/jbrown/2013.05-arm-linux-release/install/arm-none-linux-gnueabi/libc --with-gmp=/scratch/jbrown/2013.05-arm-linux-release/obj/pkg-2013.05-24-arm-none-linux-gnueabi/arm-2013.05-24-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-mpfr=/scratch/jbrown/2013.05-arm-linux-release/obj/pkg-2013.05-24-arm-none-linux-gnueabi/arm-2013.05-24-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-mpc=/scratch/jbrown/2013.05-arm-linux-release/obj/pkg-2013.05-24-arm-none-linux-gnueabi/arm-2013.05-24-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-ppl=/scratch/jbrown/2013.05-arm-linux-release/obj/pkg-2013.05-24-arm-none-linux-gnueabi/arm-2013.05-24-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-host-libstdcxx='-static-libgcc -Wl,-Bstatic,-lstdc++,-Bdynamic -lm' --with-cloog=/scratch/jbrown/2013.05-arm-linux-release/obj/pkg-2013.05-24-arm-none-linux-gnueabi/arm-2013.05-24-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --with-libelf=/scratch/jbrown/2013.05-arm-linux-release/obj/pkg-2013.05-24-arm-none-linux-gnueabi/arm-2013.05-24-arm-none-linux-gnueabi.extras/host-libs-i686-pc-linux-gnu/usr --disable-libgomp --disable-libitm --enable-poison-system-directories --with-build-time-tools=/scratch/jbrown/2013.05-arm-linux-release/install/arm-none-linux-gnueabi/bin --with-build-time-tools=/scratch/jbrown/2013.05-arm-linux-release/install/arm-none-linux-gnueabi/bin
Thread model: posix
gcc version 4.7.3 (Sourcery CodeBench Lite 2013.05-24)

Answer

ams picture ams · Jun 28, 2013

The Sourcery CodeBench Lite toolchain does not support armhf. Nor do the Academic or Personal editions.

You'll need to purchase the Standard or Professional editions to get that.

Alternatively, I believe the cross-compiler packages for Ubuntu support the configuration you need (in fact, only that configuration).

If you're not using Ubuntu, then the pre-built Linaro toolchains should be exactly what you need. (The Ubuntu cross compiler packages are/were also built by Linaro people, albeit using the Debian/Ubuntu-specific deb build system.)

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