libyat is linked together with C-linker

[Peter]

libyat is built using

/bin/sh ../libtool --tag=CC   --mode=link gcc   -version-info 1:0:0
-L/usr/lib/atlas/ -o libyat.la -rpath /usr/local/lib  
classifier/libclassifier.la random/librandom.la regression/libregression.la
statistics/libstatistics.la utility/libutility.la -lgsl -lcblas -lm 

which could be compared with, for example, convenient library libutility

/bin/sh ../../libtool --tag=CXX   --mode=link g++ -Wall -pedantic -g -O  
-L/usr/lib -L/usr/lib/atlas/ -o libutility.la  Alignment.lo 
ColumnStream.lo CommandLine.lo FileUtil.lo Index.lo kNNI.lo Matrix.lo
NNI.lo Option.lo OptionFile.lo OptionInFile.lo OptionOutFile.lo 
OptionHelp.lo OptionSwitch.lo PCA.lo stl_utility.lo SVD.lo TypeInfo.lo 
utility.lo Vector.lo VectorBase.lo VectorConstView.lo VectorMutable.lo 
VectorView.lo version.lo WeNNI.lo  -lgsl -lcblas -lm 
rm -fr  .libs/libutility.a .libs/libutility.la

Note that --tag=CXX and g++ are used in the latter case, whereas --tag=CC and gcc are used in the former case.

The problem and solution are described in ​Automake Manual 8.3.5

[Peter]

fixed in [1362]