I have been building OpenModelica for a while on Linux with x86_64 architecture. Although the build is successful, I run into run time errors during solver phase which were traced to improper typedefs in f2c.h.  I noticed that some how the config and make files generated do not make  the necessary (changes to f2c.h ... replacing  "long long" to "long" for 64bit machine).

Once I followed the README instructions in f2clib source tree as to how to massage the f2c.h,   before building OpenModelica things work fine.  My earlier post related DASSL solver crashing on all examples is also related to this. I am not sure if OS on similar architecture have issues similar to this.


Perhaps there exists a case for making the build process more robust either by waning the users of  the need to customize f2c.h for specific architecture or automating changes through make. Otherwise, novice users will have difficulty tracking down as to why the models fail during execution, even though build process completed well.