error: bad value (native) for -march= switch

[Dustin Lang]

Hi,

I'm trying to compile ceres with gcc 4.1.2 (to match the version used to compile ATLAS on my system, since the gfortran versions have to match).

I am getting:

[  0%] Building CXX object internal/ceres/CMakeFiles/gtest.dir/gmock_gtest_all.cc.o
/home/dstn/software/ceres-solver-1.7.0/internal/ceres/gmock_gtest_all.cc:1: error: bad value (native) for -march= switch
/home/dstn/software/ceres-solver-1.7.0/internal/ceres/gmock_gtest_all.cc:1: error: bad value (native) for -mtune= switch
make[2]: *** [internal/ceres/CMakeFiles/gtest.dir/gmock_gtest_all.cc.o] Error 1

In my cmake command I have:

 -DCMAKE_C_FLAGS=-fPIC -DCMAKE_CXX_FLAGS=-fPIC

It looks like you're doing:

/home/dstn/software/ceres-solver-1.7.0/CMakeLists.txt(601):  IF(CMAKE_SYSTEM_NAME MATCHES Linux )
/home/dstn/software/ceres-solver-1.7.0/CMakeLists.txt(602):  SET(CERES_CXX_FLAGS ${CERES_CXX_FLAGS} -march=native -mtune=native )

but -march=native didn't appear until a fairly recent gcc release.


Editing CMakeLists.txt around line 600 (just commenting-out those lines) fixes it.

Almost.

Later I get:

cc1plus: warnings being treated as errors
/home/dstn/software/ceres-solver-1.7.0/internal/ceres/lapack.cc: In static member function 'static int ceres::internal::LAPACK::EstimateWorkSizeForQR(int, int)':
/home/dstn/software/ceres-solver-1.7.0/internal/ceres/lapack.cc:117: warning: converting to 'int' from 'double'
make[2]: *** [internal/ceres/CMakeFiles/ceres.dir/lapack.cc.o] Error 1

Which looks like a legitimate complaint...

Removing -Werror, it compiles.  Hoorah!


With all this, I am able to compile ceres and link it with my python module, via:

swig -python -c++ -I/clusterfs/riemann/software/numpy/1.6.1-2.7.2/lib/python2.7/site-packages/numpy/core/include -I/home/dstn/software/glog-0.3.3/include -I/home/dstn/software/ceres-solver-1.7.0/include -I/home/dstn/software/eigen -I/usr/local/include/eigen3 ceres.i

g++ -Wall -fPIC -c ceres_wrap.cxx $(python-config --includes) -I/clusterfs/riemann/software/numpy/1.6.1-2.7.2/lib/python2.7/site-packages/numpy/core/include -I/home/dstn/software/glog-0.3.3/include -I/home/dstn/software/ceres-solver-1.7.0/include -I/home/dstn/software/eigen -I/usr/local/include/eigen3

g++ -Wall -fPIC -c ceres-tractor.cc -I/home/dstn/software/glog-0.3.3/include -I/home/dstn/software/ceres-solver-1.7.0/include -I/home/dstn/software/eigen -I/usr/local/include/eigen3

g++ -Wall -fPIC -o _ceres.so -shared ceres_wrap.o ceres-tractor.o /home/dstn/software/ceres-solver-1.7.0/lib/libceres.a /home/dstn/software/suitesparse-4.1.2/lib/lib{cholmod,amd,camd,colamd,ccolamd,suitesparseconfig,metis}.a /clusterfs/riemann/software/ATLAS/3.8.3/lib/lib{lapack,f77blas,atlas,cblas}.a -L/home/dstn/software/glog-0.3.3/lib -lglog -lgfortran -lrt


Note that the order of the .a files is important!  Otherwise you get failure to resolve symbols when the library is loaded.

cheers,
dustin

[Sameer Agarwal]

sweet. Looks like we need to be more careful about the gcc version in the cmake file.

I will add a fix to that and look at adding an explicit cast in lapack.cc.

Thank you for the report.

Sameer

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[Dustin Lang]

According to my notes in Astrometry.net, -march=native appear in gcc 4.2

cheers,
--dustin

[Sameer Agarwal]

Dustin,

Can you check if 

https://ceres-solver-review.googlesource.com/#/c/3930/

fixes the problems for you.

Sameer

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[Dustin Lang]

I get:

...
-- Using normal TR1 unordered_map/set
CMake Error at CMakeLists.txt:606 (IF):
  if given arguments:

    "GCC_VERSION" "NOT" "VERSION_LESS" "4.2"

  Unknown arguments specified


-- Configuring incomplete, errors occurred!



cheers,
--dustin

[Sameer Agarwal]

ugh, silly mistake from me.

updated. please try now.

thanks,

Sameer

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[Dustin Lang]

It works!

Thanks for the quick fix!
--dustin

[Sameer Agarwal]

Great thanks for testing.

Keir will merge this as soon as he has a chance to review it.

BTW, GCC 4.1.2? Your cluster seems to be a bit behind the times.

Sameer

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[Dustin Lang]

> BTW, GCC 4.1.2? Your cluster seems to be a bit behind the times.

Yeah yeah yeah, CentOS release 5.8 (Final)

We do have gcc 4.7 installed also, but I had to match the gcc version to the version used to compile ATLAS.

--dstn

[Sameer Agarwal]

This has been fixed on the master branch.

Sameer

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