Please see an updated version of glpk here:
http://sourceforge.net/projects/noumenon/files/tmp/
(Note that this is *not* an official release.)
The following main changes were made:
1. The option was added to build a stdcall DLL with MSVC10 (for MS
Windows version).
2. The option was added to build a re-entrant version of the package.
A re-entrant version of the package allows running multiple
*independent* instances of glpk in different threads of a multi-threaded
application.
A re-entrant version of the package can be built, for example, with the
following commands:
./configure ...
make CFLAGS="-DTLS=__thread" ...
The storage-class specifier defined by macro TLS depends on the compiler
used. It may be __thread for older versions of gcc, or _Thread_local if
the compiler conforms to C11.
If the application calls glpk routines from multiple threads, the
following should be taken into account:
1) a thread should not access glpk program objects (e.g. glp_proc)
created by other threads;
2) to prevent memory leaks each thread before termination should call
the glpk api routine glp_free_env.
Andrew Makhorin
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