Hello, I am a PhD student studying bioinformatics and I uses GLPK to solve linear programming problems that I encounter in my research. I write my software in high level languages such as Java or Ruby, and since GLPK is written in C, I make calls to GLPK using my language's foreign function interface.
Rather than write an entire foreign function interface for GLPK by hand, I use SWIG (http://www.swig.org/) to machine-generate the interface for me. Unfortunately, the source for GLPK needs to be (slightly) modified for SWIG to process it correctly and generate the interface for the target language. Until now, I've been maintaining private forks of GLPK and applying the changes manually each time I upgrade to a new release. Today, I went ahead and packaged them into a patch file so that (hopefully) they can make it into the trunk and save me the effort of maintaining my own local GLPK copy. The patch does two things: (1) Adds "glpk.i" to the root of the source tree. This is a SWIG interface file that SWIG users can use to generate an interface to GLPK in their language of choice. (2) Modifies "include/glpk.h" so that SWIG doesn't complain when generating the foreign interface. It seems like glpk.h contains some redundant lines that can be safely removed without compromising the current GLPK build and by removing those lines it also satisfies SWIG's demand for a clean C interface file. This patch DOESN'T modify the GLPK build to generate any foreign language interfaces...that can be left up to GLPK users themselves, since it is hard to predict in advance what language support they desire. To apply the patch, just place the patchfile in the same directory as the directory containing the GLPK 4.35 source code (the directory structure should look like the following:) /path/to/some/directory: glpk-4.35/ swig_support.patch Then execute: cd /path/to/some/directory/glpk-4.35 patch -p1 < ../swig_support.patch I hope that someone else finds this useful. If it make it into GLPK trunk, then at least I would find it useful! --Kelly Westbrooks
swig_support.patch
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