Is VB6.exe itself thread safe?

We're still maintaining some old VB6 code *(yeah, don't ask...)* and have created our own automated build process. This compiles the various product components *(COM DLLs and VB6 applications)* using VB6's command line compile option *(VB6.exe /MAKE <the VB6 application's project file>)*

To speed things up, I was wondering if once the dependencies (the COM DLLs) are successfully build, we could then create the various VB6 executables utilizing those dependencies asynchronously, i.e. launching multiple command line compilations ```VB6.exe /MAKE Project1.vbp``` and ```VB6.exe /MAKE Project2.vbp``` asynchronously etc.