Experimental Physics and
Industrial Control System

"Jeff Hill" <[email protected]> · Tue, 9 Nov 2004 11:01:07 -0700

Bob,

This is entry 98 in Mantis. That issue is related to interpretation of the
C++ standard by the various compilers (can a member function be a friend if
it is private to the befriended class). Apparently the committee considered
this matter under defect resolution, they initially were in favor of
permitting a private member function to be a friend, but were unable to find
consensus when all of the nagging details were considered. Recent GNU
compilers are apparently aggressively enforcing the forbid decision.

A fix has been committed to CVS, and will show up in R3.14.7. A temporary
workaround is as follows.

Replace this:

    friend void udpRecvThread::run ();

With this:

    friend class udpRecvThread;

On line 183 in udpiiu.h.

Sorry about the hassle.

Jeff

> -----Original Message-----
> From: Robert Soliday [mailto:[email protected]]
> Sent: Tuesday, November 09, 2004 10:35 AM
> To: tech-talk
> Subject: Problem building EPICS Base 3.14.6 on Fedora Core 3
> 
> I am having trouble compiling EPICS Base version 3.14.6 on Fedora Core 3
> 
> [soliday@cuda ~]$ cat /proc/version
> Linux version 2.6.9-1.667 ([email protected]) (gcc
> version 3.4.2 20041017 (Red Hat 3.4.2-6.fc3)) #1 Tue Nov 2 14:41:25 EST
> 2004
> 
> 
> make -C ca install
> make[2]: Entering directory `/home/soliday/epics/base3.14.6/src/ca'
> make -C O.linux-x86 -f ../Makefile TOP=../../.. T_A=linux-x86 install
> make[3]: Entering directory
> `/home/soliday/epics/base3.14.6/src/ca/O.linux-x86'
> /usr/bin/g++ -c   -D_POSIX_C_SOURCE=199506L -D_POSIX_THREADS
> -D_XOPEN_SOURCE=500  -DOSITHREAD_USE_DEFAULT_STACK      -D_X86_  -DUNIX
>   -D_BSD_SOURCE -Dlinux  -D_REENTRANT -ansi  -O3  -Wall           -I.
> -I.. -I../../../include/os/Linux -I../../../include         ../casw.cpp
> In file included from ../casw.cpp:31:
> ../udpiiu.h:73: error: `virtual void udpRecvThread::run()' is private
> ../udpiiu.h:183: error: within this context
> make[3]: *** [casw.o] Error 1
> make[3]: Leaving directory
> `/home/soliday/epics/base3.14.6/src/ca/O.linux-x86'
> make[2]: *** [install.linux-x86] Error 2
> make[2]: Leaving directory `/home/soliday/epics/base3.14.6/src/ca'
> make[1]: *** [ca.install] Error 2
> make[1]: Leaving directory `/home/soliday/epics/base3.14.6/src'
> make: *** [src.install] Error 2
> 
> Any help would be appreciated.
> Thanks,
> --Bob Soliday

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System