Bug 9478

Works for me:

$ gcc --version
gcc (Debian 4.9.2-10) 4.9.2

$ bitbake gcc
[snip]
NOTE: Tasks Summary: Attempted 503 tasks of which 345 didn't need to be rerun and all succeeded.

Do you have any more relevant details?  What distro and host compiler?  Did you change the default compiler that jethro builds (5.2), or when you say gcc4.9 do you mean host compiler?  If you changed our compiler, how did you do that?

I am using freescale.github.io Jethro repo.  

In local.conf, I have added these as well as tried to commenting them out and see what happened. I am pretty sure that gcc is using 4.9 to compile. I have also tried removed the 5.2 files.  This is my local.conf

MACHINE ??= 'hio-imx6dl-board'
DISTRO ?= 'poky'
PACKAGE_CLASSES ?= "package_rpm"
EXTRA_IMAGE_FEATURES = "debug-tweaks ssh-server-openssh \
package-management tools-sdk tools-debug "

USER_CLASSES ?= "buildstats image-mklibs image-prelink"
PATCHRESOLVE = "noop"
BB_DISKMON_DIRS = "\
    STOPTASKS,${TMPDIR},1G,100K \
    STOPTASKS,${DL_DIR},1G,100K \
    STOPTASKS,${SSTATE_DIR},1G,100K \
    ABORT,${TMPDIR},100M,1K \
    ABORT,${DL_DIR},100M,1K \
    ABORT,${SSTATE_DIR},100M,1K"
PACKAGECONFIG_append_pn-qemu-native = " sdl"
PACKAGECONFIG_append_pn-nativesdk-qemu = " sdl"
ASSUME_PROVIDED += "libsdl-native"
CONF_VERSION = "1"

BB_NUMBER_THREADS = '32'
PARALLEL_MAKE = '-j 32'

DL_DIR ?= "/yocto/downloads/"
SSTATE_DIR ?= "/yocto/sstate-cache"
ACCEPT_FSL_EULA = "1"
LICENSE_FLAGS_WHITELIST = "commercial"
DISTRO_FEATURES_remove = " x11 wayland "
DISTRO_FEATURES_append = " opengl "

PREFERRED_VERSION_gcc-cross ?= "4.9%"
PREFERRED_VERSION_gcc-cross-initial ?= "4.9%"
PREFERRED_VERSION_gcc-crosssdk ?= "4.9%"
PREFERRED_VERSION_gcc-crosssdk-initial ?= "4.9%"
PREFERRED_VERSION_gcc-runtime ?= "4.9%"
PREFERRED_VERSION_gcc-sanitizers ?= "4.9%"
PREFERRED_VERSION_gcc-source ?= "4.9%"
PREFERRED_VERSION_libgcc ?= "4.9%"
PREFERRED_VERSION_libgcc-initial ?= "4.9%"
PREFERRED_VERSION_libgfortran ?= "4.9%"
PREFERRED_VERSION_libgcc ?= "4.9%"
PREFERRED_VERSION_libgcc-initial ?= "4.9%"
PREFERRED_VERSION_libgfortran ?= "4.9%"

Sorry, was missing one important line copied from local.conf

PREFERRED_VERSION_GCC ?= "4.9%"

PREFERRED_VERSION_gcc-cross ?= "4.9%"
PREFERRED_VERSION_gcc-cross-initial ?= "4.9%"
PREFERRED_VERSION_gcc-crosssdk ?= "4.9%"
PREFERRED_VERSION_gcc-crosssdk-initial ?= "4.9%"
PREFERRED_VERSION_gcc-runtime ?= "4.9%"
PREFERRED_VERSION_gcc-sanitizers ?= "4.9%"
PREFERRED_VERSION_gcc-source ?= "4.9%"
PREFERRED_VERSION_libgcc ?= "4.9%"
PREFERRED_VERSION_libgcc-initial ?= "4.9%"
PREFERRED_VERSION_libgfortran ?= "4.9%"
PREFERRED_VERSION_libgcc ?= "4.9%"
PREFERRED_VERSION_libgcc-initial ?= "4.9%"
PREFERRED_VERSION_libgfortran ?= "4.9%"

Don't do that.  Just do:

GCCVERSION="4.9%"

That might catch a recipe that you missed.  Can you re-test?

Thank you, Setting GCCVERSION = "4.9%" fixed the error.

And thanks for pointing out the default configuration of poky in Jethro

http://cgit.openembedded.org/openembedded-core/tree/meta/conf/distro/include/tcmode-default.inc?h=jethro

Changing to NOTABUG so QA don't have to validate.