I've tried
./configure --enable-pythoninterp --enable-python3interp
on Linux From Scratch with python 2.7 and python 3.2 both compiled with
--enable-shared.
I would have expected both to work in one instance of vim, but the same
messages came up.
E836: This Vim cannot execute :python after using :py3
E837: This Vim cannot execute :py3 after using :python
I had a look at auto/config.log and it showed that both could do without
RTLD_GLOBAL.
On the other hand auto/config.h only had
#define PY_NO_RTLD_GLOBAL 1
It turns out that an according #undef needs to be in config.h.in.
I've added it for python 3, then a vim instance worked with both :python
and :py3.
The patch is attached.
Regards,
Roland
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*** config.h.in 2011-08-29 19:01:36.000000000 +0200
--- ../../vim-7.3.289/src/config.h.in 2011-08-29 23:38:43.000000000 +0200
***************
*** 346,351 ****
--- 346,354 ----
/* Define if dynamic python does not require RTLD_GLOBAL */
#undef PY_NO_RTLD_GLOBAL
+ /* Define if dynamic python does not require RTLD_GLOBAL */
+ #undef PY3_NO_RTLD_GLOBAL
+
/* Define if you want to include the Ruby interpreter. */
#undef FEAT_RUBY
