More on building Epics on Solaris

[npr@jach.hawaii.edu (Nick Rees)]

           More experiences with building Epics on Solaris....

I sent out a message about compiling Epics on Solaris in native mode a
few weeks ago. This is a few more experiences including some more of
the extensions, building on Solaris 2.4 (instead of 2.3) and a bit more
time thinking about it.


1. Redundant include files in base/include.

I have can't find any references to the following include files in the
base directory tree:

alarmString.h
ht2992.h
sydDefs.h

Should they be moved to the extensions tree, or deleted?


2. Library dependencies in extensions.

Currently, when a library is used by more than one extension, it
usually appears in the source tree of one extension or the other. This
can lead to it being impossible to have a clean build since you may not
have all the external files required to build the extension, but you
have enough to build the library you want.

I would suggest that any library that is used by more than one
extension be treated as a separate extension in its own right. This
would avoid the problem.

The case I encountered was the syd library. On Solaris 2.3 I didn't
have Motif, so I couldn't build libUnix, but needed syd for edd/dm.


3. Problem with blderrSymTbl

This turned out to be a known problem and it didn't work for Solaris
2.4. Janet has the fix provided by Andrew Johnson of RGO.


4. CMPLR = STRICT option

I have started building Solaris releases using the CMPLR=STRICT option
as default. This appears to work, so I would recommend it.

I started doing this is because of a feature of the Solaris compiler
which causes problems with the X libraries.

Basically, a a few of the Solaris X header files rely on __STDC__ being
defined to be non zero for ANSI compilers. One of the examples is in
Xmd.h:

#if __STDC__ && !defined(UNIXCPP)
#define _SIZEOF(x) sz_##x
#define SIZEOF(x) _SIZEOF(x)
#else
#define SIZEOF(x) sz_/**/x
#endif /* if ANSI C compiler else not */

However, the -Xa option of the Sun Solaris compiler sets __STDC__ to 0,
which results in the compiler including the wrong options with the
warning message:

"/usr/openwin/include/X11/Xmd.h", line 67: warning: comment does not concatenate tokens

I must admit that this problem doesn't cause any hard errors that I am
aware of, but I am also happier using the strict option, if I can get
away with it.

The only change that was required for base to compile with CMPLR=STRICT
is that the value SYSV has to be defined. This caused a problem in one
of the header files when compiling dct. I did this by changing the
reference to SVR4 in the CONFIG.Unix.solaris to a reference to SYSV.
i.e.:

OP_SYS_FLAGS = -DUNIX -DSYSV

I could not find any reference to SVR4 in the release and I often found
a reference to SYSV. I consider the original SVR4 reference to be an
error. I would be interested to hear from Andrew why he chose it - it
appears to be against convention.

As to the extensions, I have compiled ca, cau, libUnix, medm and opi.
Medm used the dummy XrtGraph stubs from Tony Cox.

The opi version was a version of opi Release 2 that I got directly from
Los Alamos. There were quite a number of changes and I suggest you get
the updated version from Bob.

For the other extensions the diffs from the file Janet provided with
beta 12 (extensions_04_13_95.Tar.Z) are:

===================================================================
RCS file: /usr/local/cvsroot/epics/extensions/src/ca/cafunc.c,v
retrieving revision 1.1.1.1
diff -r1.1.1.1 cafunc.c
195c195
< #if defined(HP_UX)
---
> #if defined(HP_UX) || defined(SYSV)
===================================================================
RCS file: /usr/local/cvsroot/epics/extensions/src/medm/medm/displayList.h,v
retrieving revision 1.1.1.1
diff -r1.1.1.1 displayList.h
72c72,76
< #include <strings.h>
---
> #ifdef SYSV
> #  include <string.h>
> #else
> #  include <strings.h>
> #endif
cvs diff: Diffing extensions/src/medm/xc
===================================================================
RCS file: /usr/local/cvsroot/epics/extensions/src/medm/xc/Matrix.c,v
retrieving revision 1.1.1.1
diff -r1.1.1.1 Matrix.c
48c48
< #ifdef sun
---
> #ifdef sun && !defined(SYSV)
===================================================================
RCS file: /usr/local/cvsroot/epics/extensions/src/medm/xc/MeterP.h,v
retrieving revision 1.1.1.1
diff -r1.1.1.1 MeterP.h
36a37,39
> #if !defined( M_PI )
> #define M_PI 3.14159265358979323846
> #endif


Nick Rees

Joint Astronomy Centre                    Ph:       +1 (808) 961-3756
660 N. Aohoku Place                       Fax:      +1 (808) 961-6516
Hilo, HI.  96720                          Internet: npr@jach.hawaii.edu