#11686: Race condition in matplotlib mkdir()
------------------------+---------------------------------------------------
Reporter: jdemeyer | Owner: tbd
Type: defect | Status: needs_review
Priority: minor | Milestone: sage-4.7.2
Component: packages | Keywords:
Work_issues: | Upstream: N/A
Reviewer: | Author: John Palmieri
Merged: | Dependencies:
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Comment(by leif):
Is this normal?
{{{
OPTIONAL BACKEND DEPENDENCIES
libpng: found, but unknown version (no pkg-config)
}}}
I do have `pkg-config` installed, and
`$SAGE_ROOT/local/lib/pkgconfig/libpng12.pc` (target of a symbolic link
`libpng.pc`) looks like this:
{{{
...
Name: libpng
Description: Loads and saves PNG files
Version: 1.2.35
Libs: -L${libdir} -lpng12
...
}}}
So maybe either `pkg-config` or MPL is confused by the "wrong" `Name: `,
since we patch MPL's `setupext.py`:
{{{
#!diff
--- src/setupext.py 2010-06-11 10:50:55.000000000 -0500
+++ src/setupext.py 2010-06-11 14:42:15.000000000 -0500
@@ -538,7 +538,7 @@
module.include_dirs.append(numpy.get_include())
def add_png_flags(module):
- try_pkgconfig(module, 'libpng', 'png')
+ try_pkgconfig(module, 'libpng12', 'png12')
add_base_flags(module)
add_numpy_flags(module)
module.libraries.append('z')
}}}
Probably this patch should only be applied on MacOS X, since
{{{
* setupext.py: link to libpng12 instead of libpng to apparently avoid
some name clashes on OSX.
}}}
(Currently running doctests, so haven't checked if not applying the patch
on Linux changes anything w.r.t. that.)
[[BR]]
We should add freetype (and now also GNU patch) to the ''Dependencies'':
{{{
REQUIRED DEPENDENCIES
numpy: 1.5.1
freetype2: 9.16.3
}}}
{{{
== Dependencies ==
* python
* numpy
}}}
--
Ticket URL: <http://trac.sagemath.org/sage_trac/ticket/11686#comment:11>
Sage <http://www.sagemath.org>
Sage: Creating a Viable Open Source Alternative to Magma, Maple, Mathematica,
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