AOSP9.0 build failed for SIGILL on hiddenapi

Question

The environment is :

Win7 x 64 host + Ubuntu14.04 x64 VM on VMWare Workstation 12

source is AOSP 9.0.0_r30

the build error is:

xargs:

/OpenSource/Build/Android-9.0.0_r30/src-9.0.0_r30/host/linux-x86/bin/hiddenapi:

terminated by signal 4

Answer 1

The right answer is here: https://github.com/sonyxperiadev/bug_tracker/issues/207

The reason is that my build host CPU(Q6600) doesn't support SSE4 instruction.

The project art require SSE4 because in

art\build\Android.bp

there are these cflags:

        "-msse4.2",
        "-mpopcnt",

and the sub project

art\tools\hiddenapi

inherit these cflags and so the output host executable "hiddenapi" will contain SSE4 instruction and trigger SIGILL during build.

according to the end of this page：https://superuser.com/questions/726395/how-to-check-if-a-binary-requires-sse4-or-avx-on-linux , you can verify this with:

objdump -d /OpenSource/Build/Android-9.0.0_r30/src-9.0.0_r30/host/linux-x86/bin/hiddenapi> ~/hiddenapi.asm

note:my OUT_DIR_COMMON_BASE is set to

/OpenSource/Build/Android-9.0.0_r30/

then

gawk '/\<(mpsadbw|phminposuw|pmulld|pmuldq|dpps|dppd|blendps|blendpd|blendvps|blendvpd|pblendvb|pblenddw|pminsb|pmaxsb|pminuw|pmaxuw|pminud|pmaxud|pminsd|pmaxsd|roundps|roundss|roundpd|roundsd|insertps|pinsrb|pinsrd|pinsrq|extractps|pextrb|pextrd|pextrw|pextrq|pmovsxbw|pmovzxbw|pmovsxbd|pmovzxbd|pmovsxbq|pmovzxbq|pmovsxwd|pmovzxwd|pmovsxwq|pmovzxwq|pmovsxdq|pmovzxdq|ptest|pcmpeqq|pcmpgtq|packusdw|pcmpestri|pcmpestrm|pcmpistri|pcmpistrm|crc32|popcnt|movntdqa|extrq|insertq|movntsd|movntss|lzcnt)\>/' ~/hiddenapi.asm

then you will see that it contains one SSE4 instruction...

After remove the above cflags the source will build successfully.But whether this will produce any bug is unknown now,though since the cflags seems to only affect host executable,the chance is low.