* Package:    sci-mathematics/gfan-0.5-r1
 * Repository: gentoo
 * Maintainer: sci-mathematics@gentoo.org
 * USE:        abi_x86_64 amd64 elibc_glibc kernel_linux userland_GNU
 * FEATURES:   network-sandbox preserve-libs sandbox userpriv usersandbox
>>> Unpacking source...
>>> Unpacking gfan0.5.tar.gz to /var/tmp/portage/sci-mathematics/gfan-0.5-r1/work
>>> Source unpacked in /var/tmp/portage/sci-mathematics/gfan-0.5-r1/work
>>> Preparing source in /var/tmp/portage/sci-mathematics/gfan-0.5-r1/work/gfan0.5 ...
 * Applying gfan-0.5-double-declare-fix.patch ...
 [ ok ]
 * Applying gfan-0.5-gcc6.1-compat.patch ...
 [ ok ]
>>> Source prepared.
>>> Configuring source in /var/tmp/portage/sci-mathematics/gfan-0.5-r1/work/gfan0.5 ...
>>> Source configured.
>>> Compiling source in /var/tmp/portage/sci-mathematics/gfan-0.5-r1/work/gfan0.5 ...
make -j1 
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -DGMPRATIONAL -Wuninitialized        -c lp_cdd.cpp
lp_cdd.cpp: In member function ‘virtual void LpSolverCddGmp::removeRedundantRows(IntegerVectorList*, IntegerVectorList*, bool)’:
lp_cdd.cpp:1290:39: warning: format ‘%i’ expects argument of type ‘int’, but argument 3 has type ‘std::__cxx11::list<Vektor<int> >::size_type’ {aka ‘long unsigned int’} [-Wformat=]
 1290 |       fprintf(stderr,"newLin.size(): %i\n",newLin.size());
      |                                      ~^    ~~~~~~~~~~~~~
      |                                       |               |
      |                                       int             std::__cxx11::list<Vektor<int> >::size_type {aka long unsigned int}
      |                                      %li
lp_cdd.cpp:1291:38: warning: format ‘%i’ expects argument of type ‘int’, but argument 3 has type ‘std::__cxx11::list<Vektor<int> >::size_type’ {aka ‘long unsigned int’} [-Wformat=]
 1291 |       fprintf(stderr,"newIn.size(): %i\n",newIn.size());
      |                                     ~^    ~~~~~~~~~~~~
      |                                      |              |
      |                                      int            std::__cxx11::list<Vektor<int> >::size_type {aka long unsigned int}
      |                                     %li
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -DGMPRATIONAL -Wuninitialized        -c parser.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -DGMPRATIONAL -Wuninitialized        -c field.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -DGMPRATIONAL -Wuninitialized        -c monomial.cpp
x86_64-pc-linux-gnu-g++ -O2 -pipe -march=native -DGMPRATIONAL -Wuninitialized        -c printer.cpp
In file included from printer.cpp:4:
polyhedralfan.h:77:24: error: friend declaration of ‘PolyhedralFan refinement(const PolyhedralFan&, const PolyhedralFan&, int, bool)’ specifies default arguments and isn’t a definition [-fpermissive]
   77 |   friend PolyhedralFan refinement(const PolyhedralFan &a, const PolyhedralFan &b, int cutOffDimension=-1, bool allowASingleConeOfCutOffDimension=false);
      |                        ^~~~~~~~~~
make: *** [Makefile:436: printer.o] Error 1
 * ERROR: sci-mathematics/gfan-0.5-r1::gentoo failed (compile phase):
 *   emake failed
 * 
 * If you need support, post the output of `emerge --info '=sci-mathematics/gfan-0.5-r1::gentoo'`,
 * the complete build log and the output of `emerge -pqv '=sci-mathematics/gfan-0.5-r1::gentoo'`.
 * The complete build log is located at '/var/log/portage/sci-mathematics:gfan-0.5-r1:20190521-103607.log'.
 * For convenience, a symlink to the build log is located at '/var/tmp/portage/sci-mathematics/gfan-0.5-r1/temp/build.log'.
 * The ebuild environment file is located at '/var/tmp/portage/sci-mathematics/gfan-0.5-r1/temp/environment'.
 * Working directory: '/var/tmp/portage/sci-mathematics/gfan-0.5-r1/work/gfan0.5'
 * S: '/var/tmp/portage/sci-mathematics/gfan-0.5-r1/work/gfan0.5/'