RE: load a list of libs

> Hi Dario,
> 
> this I know. But this command seems to load only one
library. Is there
> something like:
> root[] gSystem->LoadListOfLibs("-L/path_to_libs
-lApp1 -lApp2 -lApp3");

Yes, it does exist. Here you are 

{
   TString lPath = gSystem->GetDynamicPath();
   lPath+= ":path_to_libs";
   gSystem->SetDynamicPath((const char*)lPath);
   const char *libs[] = { "App1",
"App2", "App3" };
   for (int i = 0; i < sizeof(libs)/sizeof(char *); i++)

      printf(" Loading %s %dn", libs[i],
gSystem->Load(libs[i]));
   
}

Hope this helps

                         Valeri Fine
---------------
Brookhaven National Laboratory
Upton, NY 11973, USA
Phone: +1 631 344 7806
Fax:     +1 631 344 4206
E-mail: finebnl.gov
> Thanks, Dmitry
> 
> Dario Berzano ÐÉÛÅÔ:
> > On Mon, Mar 10, 2008 at 6:06 PM, Dmitry Naumov
<naumovnusun.jinr.ru>
> wrote:
> >
> >> Dear roottalk,
> >>
> >>  is there an implemented way to load a list of
libraries made in the
> form:
> >>  -L/path_to_libs -lApp1 -lApp2 -lApp3 ...
> >>  from the root interpreter?
> >>
> >
> > Hi Dmitry,
> >
> >   you can try
gSystem->Load("library_name"). The
documentation is
> > available here:
> >
> >   http://root.cern.ch/root/html/TSystem.html#TSystem:Load
> >
> > Regards,
> >

Hi Valeri,

thanks for your response. Well, this is again the same
gSystem->Load()
function. Certainly I could do this kind of loop...

The reason of my question is motivated by a simple idea. I
am using ROOT
VMC in my application. If I run it from the root interpreter
I use a macro
which loads several dozens of Geant4 libraries. From release
to release G4
merges/splits/renames some libraries and I have to follow
all these
developments in that macro. On the other hand G4 always
provides a nice
method similar to that in root-config. It can return me a
line with all
libraries like:
-lG4_lib1 -lG4lib2 ... -lG4libN

and like this for several dozens of libraries. Therefore I
though that it
would be nice if instead of using a macro which loads one by
one all the
libraries I would simply ask root to load everything in one
go. Well, one
can say, please, split the line and use again
gSystem->Load() substituting
-lG4_lib1 by libG4lib1.so (thus analyzing the string).
Certainly this is
possible and quite easy to realize, while it would be a sort
of
comfortable to be able to load everything just by a line
like:
gSystem->LoadListOfLibs("")

This is the point. Ok, if  this is not possible I will
proceed with a
loop, thanks again, Dmitry

>> Hi Dario,
>>
>> this I know. But this command seems to load only
one library. Is there
>> something like:
>> root[]
gSystem->LoadListOfLibs("-L/path_to_libs -lApp1
-lApp2 -lApp3");
>
> Yes, it does exist. Here you are 
>
> {
>    TString lPath = gSystem->GetDynamicPath();
>    lPath+= ":path_to_libs";
>    gSystem->SetDynamicPath((const char*)lPath);
>    const char *libs[] = { "App1",
"App2", "App3" };
>    for (int i = 0; i < sizeof(libs)/sizeof(char *);
i++)
>       printf(" Loading %s %dn", libs[i],
gSystem->Load(libs[i]));
>
> }
>
> Hope this helps
>
>                          Valeri Fine
> ---------------
> Brookhaven National Laboratory
> Upton, NY 11973, USA
> Phone: +1 631 344 7806
> Fax:     +1 631 344 4206
> E-mail: finebnl.gov
>> Thanks, Dmitry
>>
>> Dario Berzano �����:
>> > On Mon, Mar 10, 2008 at 6:06 PM, Dmitry Naumov
<naumovnusun.jinr.ru>
>> wrote:
>> >
>> >> Dear roottalk,
>> >>
>> >>  is there an implemented way to load a
list of libraries made in the
>> form:
>> >>  -L/path_to_libs -lApp1 -lApp2 -lApp3 ...
>> >>  from the root interpreter?
>> >>
>> >
>> > Hi Dmitry,
>> >
>> >   you can try
gSystem->Load("library_name"). The
documentation is
>> > available here:
>> >
>> >   http://root.cern.ch/root/html/TSystem.html#TSystem:Load
>> >
>> > Regards,
>> >
>

Hi,

On Mon, 2008-03-10 at 11:47 -0400, Fine, Valeri wrote:
> > Hi Dario,
> > 
> > this I know. But this command seems to load only
one library. Is there
> > something like:
> > root[]
gSystem->LoadListOfLibs("-L/path_to_libs -lApp1
-lApp2 -lApp3");
> 
> Yes, it does exist. Here you are 
> 
> {
>    TString lPath = gSystem->GetDynamicPath();
>    lPath+= ":path_to_libs";
>    gSystem->SetDynamicPath((const char*)lPath);
>    const char *libs[] = { "App1",
"App2", "App3" };
>    for (int i = 0; i < sizeof(libs)/sizeof(char *);
i++) 
>       printf(" Loading %s %dn", libs[i],
gSystem->Load(libs[i]));
>    
> }

How about something like 

        #include <sstream>
        
        void HandleLinkLine(const char* str)
        {
           std::stringstream s(str);
           while (!s.eof()) { 
             std::string comp;
             s >> comp;
             if (s.bad()) break;
             
             if (comp[0] != '-') {
                Warning("LoadLibraryList",
"Unknown component %s in %s", comp.c_str(), str);
        	continue;
             }
        
             std::string dir_or_file =
comp.substr(2,comp.size()-2);
             if (comp[1] == 'L') {  
                std::string path =
gSystem->GetDynamicPath();
                path += ':'; path += dir_or_file;
                gSystem->SetDynamicPath(path.c_str());
             }
             else if (comp[1] == 'l') { 
                std::string lib("lib");
                lib += dir_or_file;
                lib += ".so";
                gSysten->Load(lib.c_str());
             }
             else {
                Warning("LoadLibraryList",
"Unknown option %s in %s", comp.c_str(), str);
                continue;
             }
           }
        }
            
Perhaps code like this should be added to the command line
handling, so
that one could execute ROOT with a command line like 

        root -L/path/to/libs -llibrary -lfoo
        
which could make batch processing easier. 

Yours,


-- 
 ___  |  Christian Holm Christensen 
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