Build 6.0.1 AOSP master error: unknown target CPU 'pentium2'

[A Qu]

Hi,

I have downloaded the latest AOSP mater branch (platform 6.0.1). When I try to build, I got this error:

============================================
PLATFORM_VERSION_CODENAME=REL
PLATFORM_VERSION=6.0.1
TARGET_PRODUCT=aosp_arm
TARGET_BUILD_VARIANT=eng
TARGET_BUILD_TYPE=release
TARGET_BUILD_APPS=
TARGET_ARCH=arm
TARGET_ARCH_VARIANT=armv7-a
TARGET_CPU_VARIANT=generic
TARGET_2ND_ARCH=
TARGET_2ND_ARCH_VARIANT=
TARGET_2ND_CPU_VARIANT=
HOST_ARCH=x86_64
HOST_2ND_ARCH=x86
HOST_OS=linux
HOST_OS_EXTRA=Linux-4.2.0-16-generic-x86_64-with-Ubuntu-15.10-wily
HOST_CROSS_OS=
HOST_CROSS_ARCH=
HOST_CROSS_2ND_ARCH=
HOST_BUILD_TYPE=release
BUILD_ID=MASTER
OUT_DIR=out
============================================
prebuilts/clang/host/linux-x86/clang-2577113/bin/clang++   -fno-exceptions -Wno-multichar -m64 -Wa,--noexecstack -fPIC -no-canonical-prefixes -U_FORTIFY_SOURCE -D_FORTIFY_SOURCE=2 -fstack-protector -D__STDC_FORMAT_MACROS -D__STDC_CONSTANT_MACROS -DANDROID -fmessage-length=0 -W -Wall -Wno-unused -Winit-self -Wpointer-arith -O2 -g -fno-strict-aliasing -DNDEBUG -UDEBUG  -D__compiler_offsetof=__builtin_offsetof -Werror=int-conversion -Wno-reserved-id-macro -Wno-format-pedantic -Wno-unused-command-line-argument   --gcc-toolchain=prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8 -fstack-protector-strong    --gcc-toolchain=prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8 --sysroot=prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8/sysroot -target x86_64-linux-gnu   -Wsign-promo  -Wno-inconsistent-missing-override   --gcc-toolchain=prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8 --sysroot=prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8/sysroot -isystem prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8/x86_64-linux/include/c++/4.8 -isystem prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8/x86_64-linux/include/c++/4.8/x86_64-linux -isystem prebuilts/gcc/linux-x86/host/x86_64-linux-glibc2.15-4.8/x86_64-linux/include/c++/4.8/backward -target x86_64-linux-gnu -c -std=c++11 -g -W -Wall -MMD -MP -O -DNOLOG -march=native -o out/host/linux-x86/obj/EXECUTABLES/ckati_intermediates/command.o build/kati/command.cc
error: unknown target CPU 'pentium2'
build/kati/Makefile.ckati:90: recipe for target 'out/host/linux-x86/obj/EXECUTABLES/ckati_intermediates/command.o' failed
make: *** [out/host/linux-x86/obj/EXECUTABLES/ckati_intermediates/command.o] Error 1

#### make failed to build some targets  ####

The build host OS is Ubuntu 15.10 running on a virtual machine. Any help will be appreciated.

[Colin Cross]

Try removing the KATI_CFLAGS += -march=native from build/kati/Makefile.ckati

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[Hylon]

Hi Colin,

Why Google did NOT remove this flag(-march=native) from the official codes?

It seems it will break the build in some scenarios.

e.g. I build the codes on machine A first, and rebuild it on machine B(using some Load Sharing Facility) later after changing some sources, in this scenario, it will cause the build break...

If I clean the built executable kati & rebuild again, it will be successful.

Why Google did NOT consider to clean the built executable kati automatically once such scenarios detected?

Looking forward your reply.  :)

Thanks so much!