graphics/py3-cairo cannot find Python.h, but Python.h is present

[tech-lists]

Hello ports@,

py3-cairo fails to build saying it can't find Python.h - however this 
file is present.

/storage/usr/local/include/python2.7/Python.h
/storage/usr/local/include/python3.5m/Python.h

root at pumpkin:/root# file /storage/usr/local/include/python2.7/Python.h
/storage/usr/local/include/python2.7/Python.h: C source, ASCII text

root at pumpkin:/root# file /storage/usr/local/include/python3.5m/Python.h
/storage/usr/local/include/python3.5m/Python.h: C source, ASCII text

FreeBSD 11.0-STABLE #0 r308922 / ports is r427130

The build gives the following error:

# make MAKE_JOBS_UNSAFE=yes
===>  Building for py35-cairo-1.10.0_3
   ./options()
Waf: Entering directory 
`/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/build_directory'
   ./build()
   src/build()
parsing 
/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/src/cairomodule.c 
failed
Traceback (most recent call last):
   File 
"/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/.waf3-1.6.4-e3c1e08604b18a10567cfcd2d02eb6e6/waflib/Tools/c_preproc.py", 
line 496, in addlines
     lines=filter_comments(filepath)
   File 
"/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/.waf3-1.6.4-e3c1e08604b18a10567cfcd2d02eb6e6/waflib/Tools/c_preproc.py", 
line 47, in filter_comments
     code=Utils.readf(filename)
   File 
"/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/.waf3-1.6.4-e3c1e08604b18a10567cfcd2d02eb6e6/waflib/Utils.py", 
line 83, in readf
     txt=f.read()
   File "/usr/local/lib/python3.5/encodings/ascii.py", line 26, in decode
     return codecs.ascii_decode(input, self.errors)[0]
UnicodeDecodeError: 'ascii' codec can't decode byte 0xc2 in position 54: 
ordinal not in range(128)
[1/9] c: src/cairomodule.c -> build_directory/src/cairomodule.c.1.o
00:06:50 runner ['cc', '-I/usr/local/include', '-O2', '-pipe', 
'-fstack-protector', '-fno-strict-aliasing', '-fPIC', 
'-fstack-protector', '-fstack-protector', '-fstack-protector', 
'-fno-strict-aliasing', '-fno-strict-aliasing', 
'-I/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/build_directory/src', 
'-I/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/src', 
'-I/usr/local/include/cairo', '-I/usr/local/include/glib-2.0', 
'-I/usr/local/lib/glib-2.0/include', '-I/usr/local/include', 
'-I/usr/local/include/pixman-1', '-I/usr/local/include/freetype2', 
'-I/usr/local/include/libdrm', '-I/usr/local/include/libpng16', 
'-I/storage/storage/usr/local/include/python3.5m', '-D_THREAD_SAFE', 
'-DNDEBUG', '../src/cairomodule.c', '-c', '-o', 'src/cairomodule.c.1.o']
../src/cairomodule.c:21:10: fatal error: 'Python.h' file not found
#include <Python.h>
          ^
1 error generated.
Waf: Leaving directory 
`/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/build_directory'
Build failed
  -> task failed (exit status 1):
	{task 34457710776: c cairomodule.c -> cairomodule.c.1.o}
['cc', '-I/usr/local/include', '-O2', '-pipe', '-fstack-protector', 
'-fno-strict-aliasing', '-fPIC', '-fstack-protector', 
'-fstack-protector', '-fstack-protector', '-fno-strict-aliasing', 
'-fno-strict-aliasing', 
'-I/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/build_directory/src', 
'-I/storage/usr/ports/graphics/py3-cairo/work/pycairo-1.10.0/src', 
'-I/usr/local/include/cairo', '-I/usr/local/include/glib-2.0', 
'-I/usr/local/lib/glib-2.0/include', '-I/usr/local/include', 
'-I/usr/local/include/pixman-1', '-I/usr/local/include/freetype2', 
'-I/usr/local/include/libdrm', '-I/usr/local/include/libpng16', 
'-I/storage/storage/usr/local/include/python3.5m', '-D_THREAD_SAFE', 
'-DNDEBUG', '../src/cairomodule.c', '-c', '-o', 'src/cairomodule.c.1.o']
*** Error code 1

Stop.
make: stopped in /storage/usr/ports/graphics/py3-cairo

-- 
J.