[OE-core] meta-toolchain-sdk LDFLAGS fails for ARMv7 (beagleboard)

Mon Apr 7 20:17:30 UTC 2014

On Mon, Apr 07, 2014 at 10:02:40PM +0200, Ulf Samuelsson wrote:
> Trying to build an SDK for the Beaglebone
> 
> $ git clone git://git.yoctoproject.org/poky
> $ cd poky
> $ git checkout -b dora origin/dora
> 
> $ . oe-init-build-env
> 
> MACHINE is set to "beagleboard" in local.conf

It's not critical to your case, but in general beagleboard != beaglebone...

And cutting to the chase - U-boot recipe in OE clears CFLAGS, LDFLAGS and 
CPPFLAGS before building it...

> $ ./environment-angstrom-v2013.06
> 
> $ bitbake meta-toolchain-sdk
> 
> SDK is generated, and installed in /opt/poky/1.5.1 (default)
> 
> The toolchain environment file is "sourced"
> 
> Then I try to build U-Boot-13.10 (with a minor patch)
> 
> 
> $ make am335x_boneblack_config
> 
> $ make
> 
> After compiling a number of file, the linking of a library fails:
> 
> arm-poky-linux-gnueabi-ld.bfd -Wl,-O1 -Wl,--hash-style=gnu
> -Wl,--as-needed   -r -o libcommon.o  cmd_bdinfo.o cmd_boot.o
> cmd_bootm.o cmd_console.o cmd_dfu.o cmd_disk.o cmd_echo.o
> cmd_eeprom.o cmd_exit.o cmd_ext2.o cmd_ext4.o cmd_fat.o cmd_fdt.o
> cmd_fs.o cmd_gpio.o cmd_help.o cmd_i2c.o cmd_itest.o cmd_load.o
> cmd_mem.o cmd_misc.o cmd_mmc.o cmd_net.o cmd_nvedit.o cmd_pcmcia.o
> cmd_sf.o cmd_source.o cmd_spi.o cmd_spl.o cmd_test.o cmd_usb.o
> cmd_version.o cmd_ximg.o command.o console.o dlmalloc.o env_attr.o
> env_callback.o env_common.o env_flags.o env_mmc.o exports.o
> fdt_support.o flash.o hash.o hush.o image-fdt.o image.o main.o
> memsize.o miiphyutil.o s_record.o splash.o stdio.o usb.o usb_hub.o
> usb_storage.o xyzModem.o
> arm-poky-linux-gnueabi-ld.bfd: unrecognized option '-Wl,-O1'
> arm-poky-linux-gnueabi-ld.bfd: use the --help option for usage information
> make[1]: *** [libcommon.o] Fel 1
> make[1]: Lämnar katalogen
> "/home/ulf/felabs/sysdev/bootloader/u-boot-2013.10/common"
> make: *** [common/libcommon.o] Fel 2
> 
> -------------------
> The environment looks like:
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> export PATH=/opt/poky/1.5.1/sysroots/x86_64-pokysdk-linux/usr/bin:/opt/poky/1.5.1/sysroots/x86_64-pokysdk-linux/usr/bin/arm-poky-linux-gnueabi:$PATH
> export PKG_CONFIG_SYSROOT_DIR=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi
> export PKG_CONFIG_PATH=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi/usr/lib/pkgconfig
> export CONFIG_SITE=/opt/poky/1.5.1/site-config-armv7a-vfp-neon-poky-linux-gnueabi
> export CC="arm-poky-linux-gnueabi-gcc  -march=armv7-a
> -mthumb-interwork -mfloat-abi=softfp -mfpu=neon --sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> export CXX="arm-poky-linux-gnueabi-g++  -march=armv7-a
> -mthumb-interwork -mfloat-abi=softfp -mfpu=neon --sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> export CPP="arm-poky-linux-gnueabi-gcc -E  -march=armv7-a
> -mthumb-interwork -mfloat-abi=softfp -mfpu=neon --sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> export AS="arm-poky-linux-gnueabi-as "
> export LD="arm-poky-linux-gnueabi-ld --sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> export GDB=arm-poky-linux-gnueabi-gdb
> export STRIP=arm-poky-linux-gnueabi-strip
> export RANLIB=arm-poky-linux-gnueabi-ranlib
> export OBJCOPY=arm-poky-linux-gnueabi-objcopy
> export OBJDUMP=arm-poky-linux-gnueabi-objdump
> export AR=arm-poky-linux-gnueabi-ar
> export NM=arm-poky-linux-gnueabi-nm
> export M4=m4
> export TARGET_PREFIX=arm-poky-linux-gnueabi-
> export CONFIGURE_FLAGS="--target=arm-poky-linux-gnueabi
> --host=arm-poky-linux-gnueabi --build=x86_64-linux --with-libtool-sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> 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="/opt/poky/1.5.1/sysroots/x86_64-pokysdk-linux"
> export OECORE_TARGET_SYSROOT="/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> export OECORE_ACLOCAL_OPTS="-I
> /opt/poky/1.5.1/sysroots/x86_64-pokysdk-linux/usr/share/aclocal"
> export OECORE_DISTRO_VERSION="1.5.1"
> export OECORE_SDK_VERSION="1.5.1"
> export PYTHONHOME=/opt/poky/1.5.1/sysroots/x86_64-pokysdk-linux/usr
> export ARCH=arm
> export CROSS_COMPILE=arm-poky-linux-gnueabi-
> ---------------------------------------------------------------------------------------------------------------------------------------------------------------------------------
> 
> Notable is:
> export LD="arm-poky-linux-gnueabi-ld --sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> export LDFLAGS="-Wl,-O1 -Wl,--hash-style=gnu -Wl,--as-needed"
> 
> From the error message I see:
> "arm-poky-linux-gnueabi-ld.bfd -Wl,-O1 ..."
> 
> Note that $(CROSS_COMPILE)-ld.bfd is used, not $(CROSS_COMPILE)-ld
> 
> so the linker is linking with $(LDFLAGS) which contains switches to
> be passed to the compiler, and bombs
> 
> Changing LD to:
> export LD="arm-poky-linux-gnueabi-gcc --sysroot=/opt/poky/1.5.1/sysroots/armv7a-vfp-neon-poky-linux-gnueabi"
> 
> Does not help, still you get the same error message with
> $(CROSS_COMPILE)-ld.bfd called with "-Wl,..." arguments.
> 
> Only when I am setting LDFLAGS="", E.E: not passing arguments to I
> can compile U-Boot.
> 
> It looks like the toolchain does not handle compiler linker flags
> correctly and passes the arguments without parsing to the linker.
> 
> 
> If you use the SDK, Is it wrong to do=
> 
> ${LD} ${LDFLAGS} ??
> 
> U-Boot does this in several places?
> 
> Using the poky installation to
> 
>  bitbake core-image-minimal
> 
> will complete the build of U-Boot-2013.07, but does not pass these options.
> 
> arm-poky-linux-gnueabi-ld.bfd  -r -o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/libcommon.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/cmd_nvedit.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/console.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/dlmalloc.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/env_common.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/env_nand.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/image-fdt.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/image.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/memsize.o /home/ulf/felabs/sysdev/poky/build/tmp/work/beagleboard-poky-linux-gnueabi/u-boot/v2013.07+gitAUTOINC+62c175fbb8-r0/git/spl/common/stdio.o
> 
> 
> -- 
> Best Regards
> Ulf Samuelsson
> eMagii
> 
> -- 
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