ROOT 6 -> Other Useful Pragma Statements

ROOT
1

It has been found that ROOT 6 breaks backward compatibility with ROOT 5 with respect to Linkdef pragma statements.
A small example … CINT and ROOT 5 allow (“singular form”):
#pragma link off all [class|function|global|typedef];
while ROOT 6 dies with an error “possibly unimplemented pragma statement”.
It seems that ROOT 6 strictly expects (“plural form”):
#pragma link off all [classes|functions|globals];
and that “typedef” is NOT implemented at all (for backward compatibility, I would simply expect it to “quietly ignore” such a statement).
Note that the current “ROOT 6 User’s Guide -> Adding a Class -> Adding a Class with a Shared Library -> The LinkDef.h File -> Other Useful Pragma Statements” still advertises all these “singular form” Linkdef pragma statements in many places.

2

Dear Wile,

thanks for spotting this.
I’ll follow this up.

Cheers,
Danilo

3

Just note also that CINT and ROOT 5 accept both, “singular form” and “plural form”, Linkdef pragma statements so it might be a good idea to implement the same in ROOT 6.