Re: buildbot test failures

[Dmitri A. Sergatskov]

On Wed, Mar 15, 2017 at 4:06 PM, John W. Eaton <address@hidden> wrote:

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The gcc-6-lto-debian build fails because of a mysterious problem saving and loading signed 32-bit integers to HDF5 files.

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John,
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I think the way buldbot slaves are configured to run lto optimization is not quite right.

One needs to set AR, NM, and RANLIB to gcc-ar, gcc-nm, and gcc-ranlib correspondingly.

The reason it is kind of works now is the lfat-lto-object preserves non-lto symbols which

nm/ar/ranlib would use. Perhaps this lead to some obscure problem like failing HDF5 test.

In any case I just build octave with

../configure CFLAGS="-flto=4" CXXFLAGS="-flto=4" FFLAGS="-flto=4" LDFLAGS="-flto=4" NM="gcc-nm" AR="gcc-ar" RANLIB="gcc-ranlib"

and it works fine and passes all the tests. (I am not sure if LDFLAGS is really needed).

So you may want to adjust flags accordingly.

Also -- clang's bug not linking graphicsmagick is gone (at least on Fedora), so the

--without-magick in clang configure could be dropped as well.

jwe

​Sincerely,

Dmitri.
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