android build error

build/core/binary.mk:664: warning: overriding commands for target `out/host/linux-x86/gen/STATIC_LIBRARIES/libaapt2_intermediates/proto/frameworks/base/tools/aapt2/Format.pb.cc'
build/core/binary.mk:664: warning: ignoring old commands for target `out/host/linux-x86/gen/STATIC_LIBRARIES/libaapt2_intermediates/proto/frameworks/base/tools/aapt2/Format.pb.cc'
build/core/binary.mk:668: warning: overriding commands for target `out/host/linux-x86/gen/STATIC_LIBRARIES/libaapt2_intermediates/proto/frameworks/base/tools/aapt2/Format.pb.h'
build/core/binary.mk:668: warning: ignoring old commands for target `out/host/linux-x86/gen/STATIC_LIBRARIES/libaapt2_intermediates/proto/frameworks/base/tools/aapt2/Format.pb.h'
Starting build with ninja
ninja: Entering directory `.'
[  0% 1/34761] Lex: libaidl-common <= system/tools/aidl/aidl_language_l.ll
FAILED: /bin/bash -c "prebuilts/misc/linux-x86/flex/flex-2.5.39
 -oout/host/linux-x86/obj/STATIC_LIBRARIES/libaidl-common_intermediates/aidl_language_l.cpp system/tools/aidl/aidl_language_l.ll"
flex-2.5.39: fatal internal error, exec of /usr/bin/m4 failed
ninja: build stopped: subcommand failed.
build/core/ninja.mk:148: recipe for target 'ninja_wrapper' failed
make: *** [ninja_wrapper] Error 1

#### make failed to build some targets (29 seconds) ####

flex-2.5.39: fatal internal error, exec of /usr/bin/m4 failed

$ m4
The program 'm4' is currently not installed. You can install it by typing:
sudo apt install m4

Preparing to Build | Android Open Source Project

$ sudo apt-get install git-core gnupg flex bison gperf build-essential \
  zip curl zlib1g-dev gcc-multilib g++-multilib libc6-dev-i386 \
  lib32ncurses5-dev x11proto-core-dev libx11-dev lib32z-dev ccache \
  libgl1-mesa-dev libxml2-utils xsltproc unzip