Hello Andrew, the build files in GLPK 4.55 refer to versions of the Visual Studio Express that are not available anymore. The current version is Visual Studio Community 2015.
In the next GLPK release, please, update the build batch files as follows: w32 set HOME="C:\Program Files\Microsoft Visual Studio 14.0\VC" w64 set HOME="C:\Program Files (x86)\Microsoft Visual Studio 14.0\VC" Best regards Heinrich Schuchardt _______________________________________________ Help-glpk mailing list Help-glpk@gnu.org https://lists.gnu.org/mailman/listinfo/help-glpk