If I need to access an existing (already bootstrapped) process local UNO
environment from within e.g. an XPCOM component (which has been started from
within the office process), I have currently no API to get the UNO component
context. There is such an API in comphelper (setProcessServiceFactory().

Background:
The XPCOM-UNO runtime object (i.e. a XPCOM service that is accessed in
Javascript) offers access to am UNO component context. Getting the component
context, I currently call comphelper::getProcessServiceFactory(). If no such
service factory is set, I assume that the whole process is not the running
office process, thus I bootstrap using a remote component context (calling
cppu::bootstrap()).

As an alternative, just for omitting the need to link against comphelper, I could

if (current process is soffice..exe/soffice.bin) {
#if WINDOWS
    handle = loadLib("comphelp4msc.dll");
    sym = dlsym( handle. "C++-decorated-comphelper::getProcessService" )
#else
    sym = dlsym( processHandle. "C++-decorated-comphelper::getProcessService" )
#endif
    ...

So what do you think, Stephan?