Experimental Physics and
Industrial Control System

Robert Soliday <[email protected]> · Tue, 23 Nov 2004 10:17:09 -0600

Krapec Iztok wrote:

> Hello

>

> I am trying to build EPICS base 3.14.6 and I am getting following error:

>

>

> make[3]: Entering directory

> `/home/ikrapec/epics-instal63/base-3.14.6/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/ikrapec/epics-instal63/base-3.14.6/src/ca/O.linux-x86'

> make[2]: *** [install.linux-x86] Error 2

> make[2]: Leaving directory
`/home/ikrapec/epics-instal63/base-3.14.6/src/ca'

> make[1]: *** [ca.install] Error 2

> make[1]: Leaving directory `/home/ikrapec/epics-instal63/base-3.14.6/src'

> make: *** [src.install] Error 2

>

> I am using gcc version 3.4.2 and GNU Make 3.80.

>

> Does somebody know what is the problem?

>

> LP

>

> Iztok
Here is the reply Jeff Hill had after I asked the same question two
weeks ago:

------------------------

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.
--------------------------
If I remember correctly, this problem shows up in another file where you
have to make a similar change.
--Bob

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System