============================================================================
Edit setup.cfg to change the build options
BUILDING MATPLOTLIB
matplotlib: yes [2.0.2+4383.g4690576]
python: yes [2.7.6 (default, Oct 26 2016, 20:30:19) [GCC
4.8.4]]
platform: yes [linux2]
REQUIRED DEPENDENCIES AND EXTENSIONS
numpy: yes [version 1.8.2]
six: yes [using six version 1.10.0]
dateutil: yes [using dateutil version 1.5]
backports.functools_lru_cache: yes [backports.functools_lru_cache was not
found. It is required forPython versions prior to
3.2]
subprocess32: yes [subprocess32 was not found. It used for Python
versions prior to 3.2 to improves functionality on
Linux and OSX]
pytz: yes [using pytz version 2012c]
cycler: yes [cycler was not found. pip/easy_install may
attempt to install it after matplotlib.]
tornado: yes [tornado was not found. It is required for the
WebAgg backend. pip/easy_install may attempt to
install it after matplotlib.]
pyparsing: yes [using pyparsing version 2.1.10]
libagg: yes [pkg-config information for 'libagg' could not
be found. Using local copy.]
freetype: yes [Using local version for testing]
png: yes [version 1.2.50]
qhull: yes [Using system Qhull (version unknown, no pkg-
config info)]
OPTIONAL SUBPACKAGES
sample_data: yes [installing]
toolkits: yes [installing]
tests: no [skipping due to configuration]
toolkits_tests: no [skipping due to configuration]
OPTIONAL BACKEND EXTENSIONS
macosx: no [Mac OS-X only]
qt5agg: no [PySide2 not found; PyQt5 not found]
qt4agg: yes [installing, Qt: 4.8.6, PySide: 1.2.1; Qt:
4.8.6, PyQt: 4.8.6]
gtk3agg: no [Requires gtk3 development files to be
installed.]
gtk3cairo: no [Requires gtk3 development files to be
installed.]
/usr/lib/python2.7/dist-packages/gtk-2.0/gtk/__init__.py:57: GtkWarning: could not open display
warnings.warn(str(e), _gtk.Warning)
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; run-time loading from Python Tcl /
Tk]
wxagg: yes [installing, version 2.8.12.1]
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, pycairo version 1.8.8]
windowing: no [Microsoft Windows only]
OPTIONAL LATEX DEPENDENCIES
dvipng: no
ghostscript: yes [version 9.10]
latex: yes [version 3.1415926]
pdftops: no
OPTIONAL PACKAGE DATA
dlls: no [skipping due to configuration]
running build
running build_py
copying lib/matplotlib/mpl-data/matplotlibrc -> build/lib.linux-x86_64-2.7/matplotlib/mpl-data
UPDATING build/lib.linux-x86_64-2.7/matplotlib/_version.py
set build/lib.linux-x86_64-2.7/matplotlib/_version.py to '2.0.2+4383.g4690576'
running build_ext
building 'matplotlib._qhull' extension
x86_64-linux-gnu-gcc -pthread -fno-strict-aliasing -DNDEBUG -g -fwrapv -O2 -Wall -fPIC -DMPL_DEVNULL=/dev/null -DPY_ARRAY_UNIQUE_SYMBOL=MPL_matplotlib__qhull_ARRAY_API -DNPY_NO_DEPRECATED_API=NPY_1_7_API_VERSION -D__STDC_FORMAT_MACROS=1 -I/usr/lib/python2.7/dist-packages/numpy/core/include -I/usr/local/include -I/usr/include -I. -I/usr/include/python2.7 -c src/qhull_wrap.c -o build/temp.linux-x86_64-2.7/src/qhull_wrap.o
src/qhull_wrap.c: In function ‘delaunay_impl’:
src/qhull_wrap.c:112:5: error: unknown type name ‘QHULL_LIB_CHECK’
QHULL_LIB_CHECK
^
src/qhull_wrap.c:115:5: error: conflicting types for ‘points’
points = (coordT*)malloc(npoints*ndim*sizeof(coordT));
^
src/qhull_wrap.c:96:13: note: previous definition of ‘points’ was here
coordT* points = NULL;
^
src/qhull_wrap.c:115:14: warning: initialization makes integer from pointer without a cast [enabled by default]
points = (coordT*)malloc(npoints*ndim*sizeof(coordT));
^
src/qhull_wrap.c:116:16: warning: comparison between pointer and integer [enabled by default]
if (points == NULL) {
^
src/qhull_wrap.c:124:15: error: subscripted value is neither array nor pointer nor vector
points[2*i ] = x[i];
^
src/qhull_wrap.c:125:15: error: subscripted value is neither array nor pointer nor vector
points[2*i+1] = y[i];
^
src/qhull_wrap.c:147:29: warning: passing argument 3 of ‘qh_new_qhull’ makes pointer from integer without a cast [enabled by default]
"qhull d Qt Qbb Qc Qz", NULL, error_file);
^
In file included from /usr/include/libqhull/qhull_a.h:27:0,
from src/qhull_wrap.c:10:
/usr/include/libqhull/libqhull.h:1002:9: note: expected ‘double *’ but argument is of type ‘int’
int qh_new_qhull(int dim, int numpoints, coordT *points, boolT ismalloc,
^
src/qhull_wrap.c:230:5: warning: passing argument 1 of ‘free’ makes pointer from integer without a cast [enabled by default]
free(points);
^
In file included from /usr/include/python2.7/Python.h:42:0,
from src/qhull_wrap.c:8:
/usr/include/stdlib.h:483:13: note: expected ‘void *’ but argument is of type ‘int’
extern void free (void *__ptr) __THROW;
^
src/qhull_wrap.c:249:5: warning: passing argument 1 of ‘free’ makes pointer from integer without a cast [enabled by default]
free(points);
^
In file included from /usr/include/python2.7/Python.h:42:0,
from src/qhull_wrap.c:8:
/usr/include/stdlib.h:483:13: note: expected ‘void *’ but argument is of type ‘int’
extern void free (void *__ptr) __THROW;
^
error: command 'x86_64-linux-gnu-gcc' failed with exit status 1
Having trouble building matplotlib from source. It seems that
QHULL_LIB_CHECKis not defined for me, which causes a chain of useless errors. My guess is that the problem is I already have a system Qhull package (for ROS), which is conflicting with the bundled one. Here's the output I get:python setup.py buildIn case it's relevant, here's some info about my installed qhull
dpkg -s libqhull-devI'm doing this on WSL.