Apologies for the long message---I've really tried to be precise and complete.
I've had some time and access to a solaris box today to try to deal with this issue. I think I've solved it, based on a hint from David Kirkby.
Again, the issue is that matplotlib 1.0.0 will not compile on the solaris box t2.sagemath.org (and on another Solaris box too). David Kirkby provided the logs and specs for the systems at
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On 7/7/10 10:23 AM, Jason Grout wrote:
==================================================================
gcc -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes -fPIC -DPY_ARRAY_UNIQUE_SYMBOL=MPL_ARRAY_API -DPYCXX_ISO_CPP_LIB=1 -I/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/numpy/core/include -I/scratch/grout/sage-4.5.3/local/include -I. -I/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/numpy/core/include -Isrc -Iagg24/include -I. -I/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/numpy/core/include -I/scratch/grout/sage-4.5.3/local/include/freetype2 -I/scratch/grout/sage-4.5.3/local/include -I. -I/scratch/grout/sage-4.5.3/local/include/python2.6 -c src/backend_agg.cpp -o build/temp.solaris-2.10-sun4v-2.6/src/backend_agg.o
cc1plus: warning: command line option "-Wstrict-prototypes" is valid for Ada/C/ObjC but not for C++
In file included from /scratch/grout/sage-4.5.3/local/include/python2.6/Python.h:8,
from ./CXX/WrapPython.h:61,
from ./CXX/Extensions.hxx:37,
from src/ft2font.h:4,
from src/backend_agg.cpp:10:
/scratch/grout/sage-4.5.3/local/include/python2.6/pyconfig.h:1013:1: warning: "_FILE_OFFSET_BITS" redefined
In file included from /usr/include/sys/types.h:18,
from /scratch/grout/sage-4.5.3/local/include/zconf.h:364,
from /scratch/grout/sage-4.5.3/local/include/zlib.h:34,
from /scratch/grout/sage-4.5.3/local/include/png.h:470,
from src/backend_agg.cpp:3:
/usr/local/gcc-4.4.1-sun-linker/bin/../lib/gcc/sparc-sun-solaris2.10/4.4.1/include-fixed/sys/feature_tests.h:197:1: warning: this is the location of the previous definition
In file included from /scratch/grout/sage-4.5.3/local/include/python2.6/Python.h:42,
from ./CXX/WrapPython.h:61,
from ./CXX/Extensions.hxx:37,
from src/ft2font.h:4,
from src/backend_agg.cpp:10:
/usr/include/stdlib.h:144: error: declaration of C function 'void swab(const char*, char*, ssize_t)' conflicts with
/usr/include/unistd.h:496: error: previous declaration 'void swab(const void*, void*, ssize_t)' here
error: command 'gcc' failed with exit status 1
==================================================================
This was reportedly fixed in 1.0.0, but apparently the fix does not work for this Solaris box.
Based on a hint from David Kirkby, I changed the CXX/WrapPython.h file to be:
==================================================================
#ifndef __PyCXX_wrap_python_hxx__
#define __PyCXX_wrap_python_hxx__
// On some platforms we have to include time.h to get select defined
#if !defined(__WIN32__) && !defined(WIN32) && !defined(_WIN32) && !defined(_WIN64)
#include <sys/time.h>
#endif
// pull in python definitions
#include <Python.h>
#endif
(in other words, I just deleted all the defining and undefining of variables). The resulting matplotlib compiled finally, and the result of the testing was:
==================================================================
In [1]: import matplotlib
In [2]: matplotlib.__version__
Out[2]: '1.0.0'
In [3]: matplotlib.test()
/scratch/grout/sage-4.5.3/local/lib/python2.6/site-packages/matplotlib/axes.py:2369: UserWarning: Attempting to set identical left==right results
in singular transformations; automatically expanding.
left=730139.0, right=730139.0
+ 'left=%s, right=%s') % (left, right))
----------------------------------------------------------------------
Ran 138 tests in 755.419s
OK (KNOWNFAIL=42)
Out[3]: True
so I guess that means everything works.
I also compiled it on Ubuntu 10.04 (64-bit) and OSX 10.6.4, and it seemed to compile fine on those systems, though on OSX 10.6.4, I got some warnings like:
/home/grout/sage/local/include/python2.6/pyconfig.h:1028:1: warning: "_POSIX_C_SOURCE" redefined
/home/grout/sage/local/include/python2.6/pyconfig.h:1037:1: warning: "_XOPEN_SOURCE" redefined
This brings up another issue: going against the Python API
As you probably already know, Introduction — Python 3.12.0 documentation says that:
"Since Python may define some pre-processor definitions which affect the standard headers on some systems, you must include Python.h before any standard headers are included."
I notice a lot of other #undef statements for _POSIX_C_SOURCE and _XOPEN_SOURCE in matplotlib code. To my (uneducated) eyes, that seems like a recipe for trouble, since defining it one way while including some other files, and then undefining the macros and defining them a different way may lead to problems.
For example, in _png.cpp, I see:
#include <png.h>
// To remove a gcc warning
#ifdef _POSIX_C_SOURCE
#undef _POSIX_C_SOURCE
#endif
According to the Python API, we should include python.h before including png.h.
Thanks,
Jason