Hi Michael,
Thanks for the work on cygwin. In the past we've packaged up
whatever was needed from a cygwin install, e.g., cygwin1.dll
and a bunch of other things, and it worked OK.
If you get libgd working, I just
found a problem building real_mpfr.pyx in the SAGE library, which
you'll run into (when building the sage-2.4.2 package) -- I just did.
The fix is to comment out two lines in devel/sage/sage/rings/real_double.pyx,
as indicated in this patch below. This will, of course, be fixed
in sage-2.5.
rank4:~/d/sage was$ hg export tip
# HG changeset patch
# User William Stein <[EMAIL PROTECTED]>
# Date 1176488084 25200
# Node ID 7911f4e5017473800e297340ec00dd1ae651c70b
# Parent 0c6f4e3365d5d12ec57acd17c886ddeac6001d8a
Fix use of an explicit constant (NAN) that doesn't exist for Cygwin.
diff -r 0c6f4e3365d5 -r 7911f4e50174 sage/rings/real_double.pyx
--- a/sage/rings/real_double.pyx Thu Apr 12 23:45:34 2007 -0700
+++ b/sage/rings/real_double.pyx Fri Apr 13 11:14:44 2007 -0700
@@ -1036,8 +1036,6 @@ cdef class RealDoubleElement(FieldElemen
"""
cdef double denom
cos = gsl_sf_cos(self._value)
- if cos == 0:
- return self._new_c(NAN)
a = self._new_c(gsl_sf_sin(self._value) / cos)
return a
On 4/13/07, mabshoff <[EMAIL PROTECTED]> wrote:
>
> Ok, the problem is not in gdmodule, but libgd ask for symbols that
> were in libfl and libfontconfig (at least on my box ;)
>
> I am not working with hg yet (this is planned for the weekend), so
> this is just a "classic" diff:
>
> 61,72c61,65
> < import os
> < if os.uname()[0][:6] == "CYGWIN":
> < want_libs = [
> < "gd", "png", "z", "freetype", "libiconv"
> < ]
> < libs = filetest(libdirs, want_libs)
> < libs.append('libiconv')
> < else:
> < want_libs = [
> < "gd", "png", "z", "freetype"
> < ]
> < libs = filetest(libdirs, want_libs)
> ---
> > want_libs = [
> > "gd", "png", "z", "freetype", "iconv", "fl", "fontconfig"
> > ]
> >
> > libs = filetest(libdirs, want_libs)
> 82a76,77
> > libs.append('iconv')
> >
> 110,111d104
> < print libs
> <
>
> in case this gets mangled the patch is also at
> http://fsmath.mathematik.uni-dortmund.de/~mabshoff/patches/SAGE-2.4.2-fix-gdmodule-on-cygwin.patch
>
> Besides compiling this patch also quiets a warning about a missing
> libiconv because there is an extra lib in want_libs at, i.e.
> "libiconv" instead of "iconv"
>
> Cheers,
>
> Michael
>
>
>
> >
>
--
William Stein
Associate Professor of Mathematics
University of Washington
http://www.williamstein.org
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