Hi all,

I finally upgraded my computer to Xubuntu 22.04 and tried to install 44R28. Naturally I got all the problemas reported at:

https://github.com/JohnWStockwellJr/SeisUnix/issues/86

I read all the discussion in that thread and got not really convinced for some reason. I have changed the Makefile.config inserting after CFLAGS definition:

CFLAGS += -I/usr/include/tirpc -ltirpc (BTW, did the same with C++FLAGS, ust in case)

This solved the problem with the 'rpc/types.h' and possibl others. Then I stumbled upon the ld(1) messages:

....undefined reference to `xdr_<something>'

Next I verified the command being executed, it was:

/usr/bin/gcc -I/usr/local/geof/cwp/include -g -std=c99 -m64 -Wall -ansi -Wno-long-long -DCWP_LITTLE_ENDIAN -DSUXDR -I/usr/include/tirpc -ltirpc sucentsamp.c -L/usr/local/geof/cwp/lib -lsu -lpar -lcwp -lm -o /usr/local/geof/cwp/bin/sucentsamp

Then I started to recall very old experiences in compiltion and linking of programs and changed to the program directoru and changed the command to:

/usr/bin/gcc -I/usr/local/geof/cwp/include -g -std=c99 -m64 -Wall -ansi -Wno-long-long -DCWP_LITTLE_ENDIAN -DSUXDR -I/usr/include/tirpc sucentsamp.c -L/usr/local/geof/cwp/lib -lsu -lpar -lcwp -lm -ltirpc -o /usr/local/geof/cwp/bin/sucentsamp

And Voilá! No errors and no complains at all!

What? Didn't you get the change? It was the position of the "-ltirpc" in the command.

The order of the libraries in the link edit phase can be very importante. The libraries are searched in the order they appear.

I tried to find where those are inserted in the command and found out that those are, or seems to be, in every Makefile down the directory tree in the line:

LFLAGS= $(PRELFLAGS) -L$L -lsu -lpar -lcwp -lm $(POSTLFLAGS)

I changed the variable POSTLFLAGS in Makefile.config and it seems to work, at least in relation to the previous undefined reference.

Now it is barking about:

....undefined reference to `isfinite'

while linking the program "sunan.c".

All references I found so far (abut 3min searching) suggest to comment the lines with the reference to "isfinite", but I am not convinced that this kind of test should be avoided at all.

I am still working on it and, if solved I will come back.

HTH

Roxo