The generated sage/ext/interpreters/wrapper_cdf.pxd has the following
statement:
cimport sage.libs.cypari2.types
That would pull `-lpari`. To add `-lm` you would have to add
a line
#distutils: libraries = m
at the top of the same .pxd file, you'll have to dig a bit
inside sage_setup/autogen/interpreters.py to work out
where and how to insert it. The class "InterpreterSpec"
has a "pxd_header" which I think is right place for it.
Francois
On 28/03/17 06:58, Dima Pasechnik wrote:
here is one concrete example:
"extra_link_args"
in src/build/cythonized/sage/ext/interpreters/wrapper_cdf.c
has "-lpari" in it.
Where is this specified?
Note that this C file is apparently generated from
src/sage/ext/interpreters/wrapper_cdf.pyx
which is
"Automatically generated by
/usr/home/dima/Sage/sage/src/sage_setup/autogen/interpreters.py"
(apparently from thin air :-))
(IMHO my problem will be solved if I find out how to add '-lm' next to
that '-lpari')
Thanks,
Dima
On Monday, March 27, 2017 at 4:42:40 PM UTC+1, Dima Pasechnik wrote:
On #22679 I am getting errors like
import sage.ext.interpreters.wrapper_cdf
ImportError:
/usr/home/dima/Sage/sage/local/lib/python2.7/site-packages/sage/ext/interpreters/wrapper_cdf.so:
Undefined symbol "cpow"
Here cpow should come from cephes package, which creates
SAGE_LOCAL/lib/libm.so
---but it does not.
Where does one set up linking options for C/C++ code that goes into
sagelib?
(in this case, for src/sage/ext/interpreters/interp_cdf.c)
This does not seem to be documented anywhere.
Thanks,
Dima
--
You received this message because you are subscribed to the Google
Groups "sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send
an email to sage-devel+unsubscr...@googlegroups.com
<mailto:sage-devel+unsubscr...@googlegroups.com>.
To post to this group, send email to sage-devel@googlegroups.com
<mailto:sage-devel@googlegroups.com>.
Visit this group at https://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.
--
You received this message because you are subscribed to the Google Groups
"sage-devel" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to sage-devel+unsubscr...@googlegroups.com.
To post to this group, send email to sage-devel@googlegroups.com.
Visit this group at https://groups.google.com/group/sage-devel.
For more options, visit https://groups.google.com/d/optout.
