enblend 3.0: "gpu.h:29:21: error: GL/glut.h: No such file or directory"

[macports@…]

When trying to install hugin-app, I stumbled over following problem:

bash-3.2$ sudo /opt/local/bin/port selfupdate

MacPorts base version 1.710 installed Downloaded MacPorts base version 1.710

The MacPorts installation is not outdated so it was not updated bash-3.2$ sudo /opt/local/bin/port install hugin-app ---> Building enblend [...] Error: Target org.macports.build returned: shell command " cd "/opt/local/var/macports/build/_opt_local_var_macports_sources_rsync.macports.org_release_ports_graphics_enblend/work/enblend-3.0" && make all " returned error 2 Command output: make all-recursive Making all in include Making all in vigra make[3]: Nothing to be done for `all'. Making all in vigra_ext make[3]: Nothing to be done for `all'. make[3]: Nothing to be done for `all-am'. Making all in doc make[2]: Nothing to be done for `all'. Making all in src Making all in vigra_impex make[3]: Nothing to be done for `all'. Making all in win32helpers make[3]: Nothing to be done for `all'. if /usr/bin/g++-4.0 -DHAVE_CONFIG_H -I. -I. -I.. -I/opt/local/include -g -O3 -ffast-math -Wall -D_GNU_SOURCE -D_FILE_OFFSET_BITS=64 -DENBLEND_CACHE_IMAGES -DNDEBUG -I../include -O2 -MT enblend-enblend.o -MD -MP -MF ".deps/enblend-enblend.Tpo" -c -o enblend-enblend.o test -f 'enblend.cc' || echo './'enblend.cc; \

then mv -f ".deps/enblend-enblend.Tpo" ".deps/enblend-enblend.Po"; else rm -f ".deps/enblend-enblend.Tpo"; exit 1; fi

In file included from anneal.h:46,

from mask.h:35, from enblend.h:39, from enblend.cc:121:

gpu.h:29:21: error: GL/glut.h: No such file or directory fixmath.h: In function 'void vigra::transformLineIf(SrcIterator, SrcIterator, SrcAccessor, MaskIterator, MaskAccessor, DestIterator, DestAccessor, const Functor&) [with SrcIterator = vigra::RowIterator<vigra::ConstCachedFileImageIterator<double> >, SrcAccessor = vigra::StandardConstValueAccessor<double>, MaskIterator = vigra::RowIterator<vigra::ConstCachedFileImageIterator<vigra::UInt8> >, MaskAccessor = vigra::StandardConstValueAccessor<unsigned char>, DestIterator = vigra::RowIterator<vigra::CachedFileImageIterator<vigra::Int32> >, DestAccessor = vigra::StandardValueAccessor<int>, Functor = enblend::ConvertPyramidToScalarFunctor<vigra::Int32, double, 8, 0>]': fixmath.h:145: warning: control may reach end of non-void function 'double enblend::ConvertPyramidToScalarFunctor<DestPixelType, PyramidPixelType, PyramidIntegerBits, PyramidFractionBits>::dither(const double&) const [with DestPixelType = vigra::Int32, PyramidPixelType = double, int PyramidIntegerBits = 8, int PyramidFractionBits = 0]' being inlined [...]