Hi Steven, thank you for reporting! I have investigated on this and filed a bug for it:
https://bugs.gentoo.org/show_bug.cgi?id=347722 On Friday 03 December 2010 22:49:37 Steven Trogdon wrote: > Hello, > > With the upgrade from gdmodule-0.56 -> gdmodule-0.56-r1 the following > sage test now fails > > sage -t -long -force_lib "devel/sage/sage/matrix/matrix2.pyx" > > as > > ********************************************************************** > File "/usr/share/sage/devel/sage/sage/matrix/matrix2.pyx", line 5463: > sage: M.visualize_structure(SAGE_TMP + "matrix.png") > Exception raised: > Traceback (most recent call last): > File "/usr/bin/ncadoctest.py", line 1231, in run_one_test > self.run_one_example(test, example, filename, compileflags) > File "/usr/bin/sagedoctest.py", line 38, in run_one_example > OrigDocTestRunner.run_one_example(self, test, example, > filename, compileflags) > File "/usr/bin/ncadoctest.py", line 1172, in run_one_example > compileflags, 1) in test.globs > File "<doctest __main__.example_83[3]>", line 1, in <module> > M.visualize_structure(SAGE_TMP + "matrix.png")###line 5463: > sage: M.visualize_structure(SAGE_TMP + "matrix.png") > File "matrix2.pyx", line 5520, in > sage.matrix.matrix2.Matrix.visualize_structure > (sage/matrix/matrix2.c:31006) > NotImplementedError: PNG Support Not Available > ********************************************************************** > > The 0.56-libs.patch that's the reason for the upgrade (which appears to > be the thing to do) actually prevents Sage from finding PNG support. > The older version still works. > > Steve Cheers, Christopher
