Thanks Jon, that's the way I'll go if I can't figure anything else out.  As you probably guess, I don't like DUPPROC, especially since as I read the documentation, weak should work.

The EXPORT(*ALL) is simply for testing, but I'm not sure how the binder source would help.  I'm not very versed in binder source, but as far as I can tell all binder source does is order the exported modules.  How would it help when resolving duplicate symbols?

Oh wait.  Maybe that's the problem! Maybe it's trying to export both the weak and the strong.  Ah, let me try that.  If I add binder source to only export main maybe that will work.fined library function).



On 4/2/2019 8:53 AM, Jon Paris wrote:
Joe - I think dup proc is the only way to go. As to your comment "and even then the order isn't _guaranteed_" that should be dealt with by binder language/source instead of doing Export *All. That guarantees the slot sequence.


Jon Paris

www.partner400.com
www.SystemiDeveloper.com

On Apr 2, 2019, at 8:43 AM, Joe Pluta <joepluta@xxxxxxxxxxxxxxxxx> wrote:

Has anybody successfully used the weak #pragma for a function? I'm trying to create a service program with three modules: one that references a function, one with that function defined weakly, and one with the function defined strongly. In that scenario, I should be able to combine the following:

Reference, weak: calls weak
Reference, strong: calls strong
Reference, weak, strong: calls strong
Reference only: won't compile

The best example code I found was in the AIX reference:

https://www.ibm.com/support/knowledgecenter/SSGH3R_13.1.0/com.ibm.xlcpp131.aix.doc/compiler_ref/prag_weak.html

From what I can tell, that same syntax should work in the ILE compiler, so I created the following:

|// TFOO1.CPP #include <stdio.h> void foo(); int main() { foo(); } // TFOO2.CPP #include <stdio.h> #pragma weak foo__Fv void foo() { printf("Foo called from compilation unit 2\n"); } // TFOO3.CPP #include <stdio.h> void foo() { printf("Foo called from compilation unit 3\n"); } |


CRTSRVPGM TFOO MODULES(TFOO1 TFOO2 TFOO3) EXPORT(*ALL) fails with CPD5D03, Definition supplied multiple times for symbol 'foo__Fv'.

I can get around it with OPTION(*DUPPROC) but then I have to be very careful of the order of my modules in the MODULES keyword of CRTSRVPGM (and even then the order isn't _guaranteed_). That also would hide any cases of unintentional procedure duplication, so I'd really like to get #pragma weak working.


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