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From:	Felipe Vieira <fmv1992 AT gmail DOT com>
Date:	Tue, 23 Aug 2016 09:54:02 -0300
Message-ID:	<CAMZ6u3vL1D7fZF1Ro2zQDQg3uUjsNad9+QXf1d=8GSxtnwx7qA@mail.gmail.com>
Subject:	Re: building libgeos [solved]
To:	cygwin AT cygwin DOT com

Hey guys,

after a couple more trials was able to solve the issue. I am not sure
exactly what was the problem but I'll be reporting the full
workaround.

Neither I am certain that the libgeos shipped with cygwin has an
issue; it looks like it was a matplotlib basemap issue instead.

Anyways here is the full process to get matplotlib basemap on cygwin:

1) <<Do not>> git clone https://github.com/matplotlib/basemap .
Instead use their releases page:
https://github.com/matplotlib/basemap/releases . Follow the procedure
indicated in their github home page.

2) After the "> ./configure --prefix=$GEOS_DIR" but before the " >
make; make install" edit the file include/geos/platform.h on line 87
from:

'''
#if defined(HAVE_ISNAN)
# define ISNAN(x) (isnan(x))
#else
# if defined(_MSC_VER)
#  define ISNAN(x) _isnan(x)
# elif defined(__MINGW32__)
// sandro furieri: sanitizing MinGW32
#  define ISNAN(x) (std::isnan(x))
# elif defined(__OSX__) || defined(__APPLE__)
   // Hack for OS/X <cmath> incorrectly re-defining isnan() into oblivion.
   // It does leave a version in std.
#  define ISNAN(x) (std::isnan(x))
# elif defined(__sun) || defined(__sun__)
#  include <math.h>
#  define ISNAN(x) (::isnan(x))
# endif
#endif
'''
to
'''
# define ISNAN(x) (std::isnan(x))
# include <math.h>
# include <cmath>
'''
now proceed to the " > make; make install" and continue the procedure
as informed.

Thanks for all the help!

Best regards,

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