User manual
  Dymola 2015 FD01 Release Notes  27 
Note that although the Visual Studio 2013 and 2012 compiler are fully supported, these 
compilers by default generate a bit less efficient code than previous versions of the 
compiler, with the selected optimization settings. As a temporary work-around you can set 
the flag 
Advanced.Define.GlobalOptimizations = 2; 
before generating code, to activate global optimization in the compiler. (The default value of 
the flag is 0.)  
This flag works the same for all Visual Studio compilers, but the effect on compilers of 
previous versions is small. For the Visual Studio 2013 and 2012 compiler, however, the 
simulation performance is restored, but the compilation of the code might take substantially 
longer for large models. The setting corresponds to the compiler command 
/Og. 
Extended GCC compiler support 
DLL mode is now supported for GCC. 
3.4.2 Installation on Linux 
Dymola now available as a 64-bit application on Linux 
Dymola 2015 FD is available as a 64-bit application on Linux. It is included in the 
distribution. 64-bit export and import of FMUs is also supported. 
Note some general requirements concerning jpg files and 32-bit compilation, see section 
“Supported Linux versions and compilers” on page 53. 
Changed directory structure 
From Dymola 2015 FD01, version  and architecture are  included in the default path for 
installation and user: 
/opt/dymola-<version>-<architecture> 
and 










