libtool-native do_configure error while compiling pocky

[Suraj_Prakash]

HI ,

       I m trying to compile  poky-morty-16.0.0 and while compiling mininal image i m facing the following errors;

bitbake core-image-minimal
WARNING: Host distribution "Ubuntu-18.04" has not been validated with this version of the build system; you may possibly experience unexpected failures. It is recommended that you use a tested distribution.
Loading cache: 100% |##########################################################################################################| Time: 0:00:00
Loaded 2242 entries from dependency cache.
NOTE: Resolving any missing task queue dependencies

Build Configuration:
BB_VERSION = "1.32.0"
BUILD_SYS = "x86_64-linux"
NATIVELSBSTRING = "universal"
TARGET_SYS = "x86_64-poky-linux"
MACHINE = "kontron-come-bbd7"
DISTRO = "poky"
DISTRO_VERSION = "2.2"
TUNE_FEATURES = "m64 corei7"
TARGET_FPU = ""
meta
meta-poky
meta-yocto-bsp
meta-kontron-come-bbd7
meta-intel = "<unknown>:<unknown>"

WARNING: /home/nos/comE_intel/poky-morty-16.0.0/meta/recipes-devtools/opkg-utils/opkg-utils_git.bb.do_patch is tainted from a forced run:00:04
Initialising tasks: 100% |#####################################################################################################| Time: 0:00:05
NOTE: Executing SetScene Tasks
NOTE: Executing RunQueue Tasks
ERROR: libtool-native-2.4.6-r0 do_configure: Function failed: do_configure (log file is located at /home/nos/comE_intel/poky-morty-16.0.0/build/tmp/work/x86_64-linux/libtool-native/2.4.6-r0/temp/log.do_configure.4940)
ERROR: Logfile of failure stored in: /home/nos/comE_intel/poky-morty-16.0.0/build/tmp/work/x86_64-linux/libtool-native/2.4.6-r0/temp/log.do_configure.4940
Log data follows:
| DEBUG: Executing python function sysroot_cleansstate
| DEBUG: Python function sysroot_cleansstate finished
| DEBUG: Executing shell function autotools_preconfigure
| DEBUG: Shell function autotools_preconfigure finished
| DEBUG: Executing python function autotools_copy_aclocals
| DEBUG: Considering setscene task: ['m4-native', 'do_populate_sysroot']
| DEBUG: considering dependency: ['autoconf-native', 'do_populate_sysroot']
| DEBUG: SITE files ['endian-little', 'common-linux', 'common-glibc', 'bit-64', 'x86_64-linux', 'common']
| DEBUG: Python function autotools_copy_aclocals finished
| DEBUG: Executing shell function do_configure
| Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /home/nos/comE_intel/poky-morty-16.0.0/build/tmp/sysroots/x86_64-linux/usr/bin/automake line 3939.
| Unescaped left brace in regex is illegal here in regex; marked by <-- HERE in m/\${ <-- HERE ([^ \t=:+{}]+)}/ at /home/nos/comE_intel/poky-morty-16.0.0/build/tmp/sysroots/x86_64-linux/usr/bin/automake line 3939.
| WARNING: exit code 255 from a shell command.
| ERROR: Function failed: do_configure (log file is located at /home/nos/comE_intel/poky-morty-16.0.0/build/tmp/work/x86_64-linux/libtool-native/2.4.6-r0/temp/log.do_configure.4940)
ERROR: Task (/home/nos/comE_intel/poky-morty-16.0.0/meta/recipes-devtools/libtool/libtool-native_2.4.6.bb:do_configure) failed with exit code '1'
NOTE: Tasks Summary: Attempted 585 tasks of which 576 didn't need to be rerun and 1 failed.

Summary: 1 task failed:
/home/nos/comE_intel/poky-morty-16.0.0/meta/recipes-devtools/libtool/libtool-native_2.4.6.bb:do_configure
Summary: There were 2 WARNING messages shown.
Summary: There was 1 ERROR message shown, returning a non-zero exit code.

Kindly Please suggest a solution. Thanks in Advance.