>> The example is attached as a patch against sage 3.2.3.
I forgot it, sorry.
>> As burcin pointed on IRC, this might have something to do with the
>> fact that dd_set_global_constant is mangled:
>> nm local/lib/libcdd.a | grep dd_set_global_constants
>> 00000185 T _Z23dd_set_global_constantsv
>
> What's the line in module_list.py that you use for pymcdd?
Extension('sage.geometry.pymcdd',
sources = ['sage/geometry/pymcdd.pyx'],
libraries=['cdd']),
It is also in the patch.
> Does it even explicitly link in cdd??
yes
> Does it use the right language option?
I don't know. My only documentation on this topic is
http://docs.cython.org/docs/source_files_and_compilation.html
--
Sébastien Barthélemy
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# HG changeset patch
# User Sébastien Barthélemy <sebastien.barthel...@gmail.com>
# Date 1232711765 -3600
# Node ID 6013a813c4af012b70e08b1cd32d0c8d42444ffc
# Parent b0aa7ef45b3ccf27b3a5196a543451335419c4c2
minimalistic example showing runtime linking problems with libcdd
diff -r b0aa7ef45b3c -r 6013a813c4af module_list.py
--- a/module_list.py Mon Jan 05 23:03:45 2009 -0800
+++ b/module_list.py Fri Jan 23 12:56:05 2009 +0100
@@ -179,6 +179,16 @@
Extension('sage.finance.time_series',
sources = ['sage/finance/time_series.pyx'],
include_dirs = numpy_include_dirs),
+
+ ################################
+ ##
+ ## sage.geometry
+ ##
+ ################################
+
+ Extension('sage.geometry.pymcdd',
+ sources = ['sage/geometry/pymcdd.pyx'],
+ libraries=['cdd']),
################################
diff -r b0aa7ef45b3c -r 6013a813c4af sage/geometry/all.py
--- a/sage/geometry/all.py Mon Jan 05 23:03:45 2009 -0800
+++ b/sage/geometry/all.py Fri Jan 23 12:56:05 2009 +0100
@@ -1,3 +1,6 @@
+
+import pymcdd
+
from polytope import polymake
from polyhedra import extreme_verts, ieq_to_vert, vert_to_ieq, Polyhedron, mink_sum, polytopes
diff -r b0aa7ef45b3c -r 6013a813c4af sage/geometry/mcdd.pxd
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sage/geometry/mcdd.pxd Fri Jan 23 12:56:05 2009 +0100
@@ -0,0 +1,5 @@
+cdef extern from "setoper.h":
+ ctypedef unsigned long *set_type
+
+cdef extern from "cdd.h":
+ void dd_set_global_constants()
diff -r b0aa7ef45b3c -r 6013a813c4af sage/geometry/pymcdd.pyx
--- /dev/null Thu Jan 01 00:00:00 1970 +0000
+++ b/sage/geometry/pymcdd.pyx Fri Jan 23 12:56:05 2009 +0100
@@ -0,0 +1,4 @@
+cimport mcdd
+
+# init global constants
+mcdd.dd_set_global_constants()
