我正在使用cygwin并使用easy_install来安装matplotlib。我得到上述错误。到目前为止，我已经附加了安装过程。出了什么问题？
$ easy_install matplotlib
Searching for matplotlib
Reading http://pypi.python.org/simple/matplotlib/
Reading http://matplotlib.org
Reading http://matplotlib.sourceforge.net
Reading http://sourceforge.net/project/showfiles.php?group_id=80706
Reading http://sourceforge.net/project/showfiles.php?group_id=80706&package_id=82474
Reading http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.1.0/
Reading http://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.1.1/
Reading https://sourceforge.net/project/showfiles.php?group_id=80706&package_id=278194
Reading https://sourceforge.net/project/showfiles.php?group_id=80706&package_id=82474
Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.1/
Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-0.99.3/
Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.0
Reading https://sourceforge.net/projects/matplotlib/files/matplotlib/matplotlib-1.0.1/
Best match: matplotlib 1.3.1
Downloading https://downloads.sourceforge.net/project/matplotlib/matplotlib/matplotlib-1.3.1/matplotlib-1.3.1.tar.gz
Processing matplotlib-1.3.1.tar.gz
Writing /tmp/easy_install-ocoQwv/matplotlib-1.3.1/setup.cfg
Running matplotlib-1.3.1/setup.py -q bdist_egg --dist-dir /tmp/easy_install-ocoQwv/matplotlib-1.3.1/egg-dist-tmp-P_dVeG
============================================================================
Edit setup.cfg to change the build options
BUILDING MATPLOTLIB
matplotlib: yes [1.3.1]
python: yes [2.7.5 (default, Oct 2 2013, 22:34:09) [GCC
4.8.1]]
platform: yes [cygwin]
REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.6.2]
dateutil: yes [dateutil was not found. It is required for date
axis support. pip/easy_install may attempt to
install it after matplotlib.]
tornado: yes [using tornado version 3.2]
pyparsing: yes [using pyparsing version 2.0.1]
pycxx: yes [Couldn't import. Using local copy.]
libagg: yes [pkg-config information for 'libagg' could not
be found. Using local copy.]
freetype: yes [version 16.1.10]
png: yes [version 1.5.14]
OPTIONAL SUBPACKAGES
sample_data: yes [installing]
toolkits: yes [installing]
tests: yes [using nose version 1.3.0]
OPTIONAL BACKEND EXTENSIONS
macosx: no [Mac OS-X only]
qt4agg: yes [installing, Qt: 4.8.4, PyQt4: 4.10.2]
gtk3agg: no [Requires pygobject to be installed.]
gtk3cairo: no [Requires pygobject to be installed.]
gtkagg: no [The C/C++ header for pygtk (pygtk/pygtk.h)
could not be found. You may need to install the
development package.]
tkagg: yes [installing, version 81008]
wxagg: no [requires wxPython]
gtk: no [The C/C++ header for pygtk (pygtk/pygtk.h)
could not be found. You may need to install the
development package.]
agg: yes [installing]
cairo: yes [installing, version 1.10.0]
windowing: no [Microsoft Windows only]
OPTIONAL LATEX DEPENDENCIES
dvipng: yes [version 1.14]
ghostscript: yes [version 9.06]
latex: yes [version 3.1415926]
pdftops: yes [version 0.22.5]
In file included from src/file_compat.h:4:0,
from src/_png.cpp:31:
/usr/lib/python2.7/site-packages/numpy/core/include/numpy/npy_3kcompat.h: In function ‘PyObject* npy_PyFile_OpenFile(PyObject*, char*)’:
/usr/lib/python2.7/site-packages/numpy/core/include/numpy/npy_3kcompat.h:258:60: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
return PyObject_CallFunction(open, "Os", filename, mode);
^
In file included from src/_png.cpp:31:0:
src/file_compat.h: In function ‘int npy_PyFile_CloseFile(PyObject*)’:
src/file_compat.h:125:50: warning: deprecated conversion from string constant to ‘char*’ [-Wwrite-strings]
ret = PyObject_CallMethod(file, "close", NULL);
^
src/_png.cpp: In function ‘void init_png()’:
src/_png.cpp:631:25: warning: variable ‘_png’ set but not used [-Wunused-but-set-variable]
static _png_module* _png = NULL;
^
In file included from src/file_compat.h:4:0,
from src/_png.cpp:31:
/usr/lib/python2.7/site-packages/numpy/core/include/numpy/npy_3kcompat.h: At global scope:
/usr/lib/python2.7/site-packages/numpy/core/include/numpy/npy_3kcompat.h:391:1: warning: ‘void simple_capsule_dtor(void*)’ defined but not used [-Wunused-function]
simple_capsule_dtor(void *ptr)
^
src/_path.cpp: In function ‘void init_path()’:
src/_path.cpp:1759:26: warning: variable ‘_path’ set but not used [-Wunused-but-set-variable]
static _path_module* _path = NULL;
^
In file included from src/path_converters.h:10:0,
from src/path_cleanup.cpp:10:
agg24/include/agg_clip_liang_barsky.h: In function ‘void* get_path_iterator(PyObject*, PyObject*, int, int, double*, e_snap_mode, double, int, double, double, double)’:
agg24/include/agg_clip_liang_barsky.h:259:12: warning: ‘y1’ may be used uninitialized in this function [-Wmaybe-uninitialized]
*x = (T)(double(bound - y1) * (x2 - x1) / (y2 - y1) + x1);
^
In file included from src/path_cleanup.cpp:10:0:
src/path_converters.h:440:28: note: ‘y1’ was declared here
double x0, y0, x1, y1;
^
In file included from src/path_converters.h:10:0,
from src/path_cleanup.cpp:10:
agg24/include/agg_clip_liang_barsky.h:62:39: warning: ‘x1’ may be used uninitialized in this function [-Wmaybe-uninitialized]
((y < clip_box.y1) << 3);
^
In file included from src/path_cleanup.cpp:10:0:
src/path_converters.h:440:24: note: ‘x1’ was declared here
double x0, y0, x1, y1;
^
In file included from src/path_converters.h:10:0,
from src/path_cleanup.cpp:10:
agg24/include/agg_clip_liang_barsky.h:259:12: warning: ‘y0’ may be used uninitialized in this function [-Wmaybe-uninitialized]
*x = (T)(double(bound - y1) * (x2 - x1) / (y2 - y1) + x1);
^
In file included from src/path_cleanup.cpp:10:0:
src/path_converters.h:440:20: note: ‘y0’ was declared here
double x0, y0, x1, y1;
^
In file included from src/path_converters.h:10:0,
from src/path_cleanup.cpp:10:
agg24/include/agg_clip_liang_barsky.h:62:39: warning: ‘x0’ may be used uninitialized in this function [-Wmaybe-uninitialized]
((y < clip_box.y1) << 3);
^
In file included from src/path_cleanup.cpp:10:0:
src/path_converters.h:440:16: note: ‘x0’ was declared here
double x0, y0, x1, y1;
^
In file included from /usr/include/python2.7/unicodeobject.h:57:0,
from /usr/include/python2.7/Python.h:85,
from ./CXX/WrapPython.h:58,
from ./CXX/Extensions.hxx:37,
from lib/matplotlib/tri/_tri.h:66,
from lib/matplotlib/tri/_tri.cpp:8:
lib/matplotlib/tri/_tri.h:821:33: error: expected unqualified-id before numeric constant
const unsigned long _M, _A, _C;
^
lib/matplotlib/tri/_tri.cpp: In constructor ‘RandomNumberGenerator::RandomNumberGenerator(long unsigned int)’:
lib/matplotlib/tri/_tri.cpp:2180:28: error: expected identifier before numeric constant
: _M(21870), _A(1291), _C(4621), _seed(seed % _M)
^
lib/matplotlib/tri/_tri.cpp:2180:28: error: expected ‘{’ before numeric constant
lib/matplotlib/tri/_tri.cpp: At global scope:
lib/matplotlib/tri/_tri.cpp:2180:28: error: expected unqualified-id before numeric constant
error: Setup script exited with error: command 'gcc' failed with exit status 1
答案 0 :(得分：1)
我建议你安装PythonXY，你将拥有几乎所有你需要的东西，或者至少非常好的和众所周知的libs（包括matplotlib，numpy，scipy等等）。它开箱即用 ，无需查找依赖项。
答案 1 :(得分：1)
答案在这里https://github.com/matplotlib/matplotlib/issues/2463
“在第821行的lib / matplotlib / tri / _tri.h中定义了一个名为”_C“的变量，并在2180和2186行的tri.cpp中调用。由于某种原因，gcc不喜欢这个（是它某些架构中的保留字？）。我只是在tri.h和tri.cpp中将变量重命名为“_Co”，编译成功完成。“
答案 2 :(得分：0)
在Windows上，您可以安装Unofficial Windows Binaries for Python Extension Packages个可执行文件，无需编译。