Re: [build] Build errors with gcc - bad argument -mcpu=v7

From: Andrey Semashev (andrey.semashev_at_[hidden])
Date: 2019-06-26 18:02:11

On 6/26/19 8:58 PM, Andrey Semashev wrote:
> Hi,
> 
> I'm trying to run tests for Boost.Core with the following command:
> 
> bjam -j 8 toolset=gcc cxxstd=14 variant=release libs/core/test
> 
> Compilation fails with the following errors:
> 
> gcc.compile.c++ 
> bin.v2/libs/core/test/lightweight_test_fail10.test/gcc-8/release/cxxstd-14-iso/threading-multi/visibility-hidden/lightweight_test_fail10.o 
> 
> g++: warning: ‘-mcpu=’ is deprecated; use ‘-mtune=’ or ‘-march=’ instead
> cc1plus: error: bad value (‘v7’) for ‘-mtune=’ switch
> cc1plus: note: valid arguments to ‘-mtune=’ switch are: nocona core2 
> nehalem corei7 westmere sandybridge corei7-avx ivybridge core-avx-i 
> haswell core-avx2 broadwell skylake skylake-avx512 cannonlake 
> icelake-client icelake-server bonnell atom silvermont slm knl knm intel 
> x86-64 eden-x2 nano nano-1000 nano-2000 nano-3000 nano-x2 eden-x4 
> nano-x4 k8 k8-sse3 opteron opteron-sse3 athlon64 athlon64-sse3 athlon-fx 
> amdfam10 barcelona bdver1 bdver2 bdver3 bdver4 znver1 btver1 btver2 
> generic native
> 
>  Â Â Â  "g++"Â Â  -std=c++14 -fvisibility-inlines-hidden -fPIC -m64 -pthread 
> -O3 -finline-functions -Wno-inline -Wall -fvisibility=hidden -mcpu=v7 
> -DBOOST_ALL_NO_LIB=1 -DNDEBUGÂ  -I"." -c -o 
> "bin.v2/libs/core/test/lightweight_test_fail10.test/gcc-8/release/cxxstd-14-iso/threading-multi/visibility-hidden/lightweight_test_fail10.o" 
> "libs/core/test/lightweight_test_fail10.cpp"
> 
> ...failed gcc.compile.c++ 
> bin.v2/libs/core/test/lightweight_test_fail10.test/gcc-8/release/cxxstd-14-iso/threading-multi/visibility-hidden/lightweight_test_fail10.o... 
> 
> 
> I'm not sure where that -mcpu=v7 comes from, but I don't have it in my 
> options, nether do I see it in the Jamfile.

Adding instruction-set=nehalem fixes the errors. I don't have it set 
neither in the tests Jamfile nor in user-config.jam, so there seems 
something wrong with the default value for this property.