[yocto] [poky] Is this a bug of binutils

Fri Sep 20 01:50:39 PDT 2013

On Fri, Sep 20, 2013 at 11:43:31AM +0300, Laurentiu Palcu wrote:
> Hi,
> 
> On Fri, Sep 20, 2013 at 02:45:24PM +0800, Li Zhijian wrote:
> > Hi，all
> > 
> > I got a big problem when using the cross-toolchain to compile a simple C program.
> > This problem since 3ae71c74c71f13a390b21b4c3ead04e51aaa82b8
> > which is to upgrade the binutils from 2.22 to 2.23.1
Apparently I missed this... Make sure you checkout
0333796a6b167dd754806700d7f771dd4a74e4ab (binutils_2.23.1.bb: Correct
typo in enable-targets configure option). This might be your problem.

Laurentiu

> > 
> > what I do is as follows, any help or ideas ?
> > 
> > I) Build my cross-toolchain
> > # git clone http://git.yoctoproject.org/git/poky/.git
> > # cd poky
> > # git checkout 3ae71c74c71f13a390b21b4c3ead04e51aaa82b8 -b tcmode-default
> > ...skip some steps...
> > # bitbake meta-toolchain
> > Loading cache: 100% |############################################################################################| ETA: 00:00:00
> > Loaded 1122 entries from dependency cache.
> > 
> > Build Configuration:
> > BB_VERSION = "1.17.0"
> > BUILD_SYS = "x86_64-linux"
> > NATIVELSBSTRING = "CentOS-6.3"
> > TARGET_SYS = "x86_64-poky-linux"
> > MACHINE = "qemux86-64"
> > DISTRO = "poky"
> > DISTRO_VERSION = "1.3+snapshot-20130912"
> > TUNE_FEATURES = "m64"
> > TARGET_FPU = ""
> > meta
> > meta-yocto
> > meta-yocto-bsp = "tcmode-default:3ae71c74c71f13a390b21b4c3ead04e51aaa82b8"
> > 
> > ..cost a long time..
> > all of the build work successfully
> > 
> > II) Install my cross-toolchain
> > # ./poky-eglibc-x86_64-x86_64-toolchain-1.3+snapshot-20130912.sh
> > Enter target directory for SDK (default: /opt/poky/1.3+snapshot): toolchain-1.3-tcmode-default
> > 
> > III） compile a simple C program
> > # cat test.c
> > int main ()
> > {
> > printf("hello world\n");
> > return 0;
> > }
> > # source toolchain-1.3-tcmode-default/environment-setup-x86_64-poky-linux
> > # $CC -o test test.c -L tmp/sysroots/qemux86-64/usr/lib/ -lm
> Technically, for this simple program, it's enough to do:
> 
> $CC -o test test.c
> 
> The $CC contains the sysroot option and the linker will automatically
> prefix /lib and /usr/lib with the target sysroot. So, it should be able
> to compile just fine.
> 
> The -L option just adds another search path for libraries which will be
> searched before the default ones. So, it shouldn't be a problem.
> 
> Somehow, it looks like it tries to link against the host's libraries.
> 
> Before compiling, do a 'echo $CC' and make sure the --sysroot points to
> the correct directory.
> 
> Laurentiu
> 
> > test.c: In function 'main':
> > test.c:3:9: warning: incompatible implicit declaration of built-in function 'printf' [enabled by default]
> > /yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/4.7.2/ld: skipping incompatible /lib/libc.so.6 when searching for /lib/libc.so.6
> > /yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/4.7.2/ld: cannot find /lib/libc.so.6
> > /yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/4.7.2/ld: skipping incompatible /usr/lib/libc_nonshared.a when searching for /usr/lib/libc_nonshared.a
> > /yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux/../../libexec/x86_64-poky-linux/gcc/x86_64-poky-linux/4.7.2/ld: cannot find /usr/lib/libc_nonshared.a
> > collect2: error: ld returned 1 exit status
> > 
> > 
> > #cat toolchain-1.3-tcmode-default/environment-setup-x86_64-poky-linux
> > export PATH=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/bin:/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/bin/x86_64-poky-linux:$PATH
> > export PKG_CONFIG_SYSROOT_DIR=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux
> > export PKG_CONFIG_PATH=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux/usr/lib/pkgconfig
> > export CONFIG_SITE=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/site-config-x86_64-poky-linux
> > export CC="x86_64-poky-linux-gcc -m64 --sysroot=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux"
> > export CXX="x86_64-poky-linux-g++ -m64 --sysroot=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux"
> > export CPP="x86_64-poky-linux-gcc -E -m64 --sysroot=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux"
> > export AS="x86_64-poky-linux-as "
> > export LD="x86_64-poky-linux-ld --sysroot=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux"
> > export GDB=x86_64-poky-linux-gdb
> > export STRIP=x86_64-poky-linux-strip
> > export RANLIB=x86_64-poky-linux-ranlib
> > export OBJCOPY=x86_64-poky-linux-objcopy
> > export OBJDUMP=x86_64-poky-linux-objdump
> > export AR=x86_64-poky-linux-ar
> > export NM=x86_64-poky-linux-nm
> > export M4=m4
> > export TARGET_PREFIX=x86_64-poky-linux-
> > export CONFIGURE_FLAGS="--target=x86_64-poky-linux --host=x86_64-poky-linux --build=x86_64-linux --with-libtool-sysroot=/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux"
> > export CFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types"
> > export CXXFLAGS=" -O2 -pipe -g -feliminate-unused-debug-types -fpermissive"
> > export LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed"
> > export CPPFLAGS=""
> > export OECORE_NATIVE_SYSROOT="/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux"
> > export OECORE_TARGET_SYSROOT="/yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-poky-linux"
> > export OECORE_ACLOCAL_OPTS="-I /yocto/fnst/lizj/build_yocto/x86-64-yocto-1.3/toolchain-1.3-tcmode-default/sysroots/x86_64-pokysdk-linux/usr/share/aclocal"
> > export OECORE_DISTRO_VERSION="1.3+snapshot-20130912"
> > export OECORE_SDK_VERSION="1.3+snapshot"
> > 
> > -- 
> > Best regards.
> > Li Zhijian (8555)
> > 
> > 
> > _______________________________________________
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