[Mingw-notify] [ mingw-Bugs-815021 ] -Wl,--allow-shlib-undefined doesn't seem to work

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Bugs item #815021, was opened at 2003-09-30 12:46
Message generated for change (Tracker Item Submitted) made by Item Submitter
You can respond by visiting: 
https://sourceforge.net/tracker/?func=detail&atid=102435&aid=815021&group_id=2435

Category: gcc
Group: None
Status: Open
Resolution: None
Priority: 5
Submitted By: Dimitri Papadopoulos (papadopo)
Assigned to: Danny Smith (dannysmith)
Summary: -Wl,--allow-shlib-undefined doesn't seem to work

Initial Comment:
Hi,



The --allow-shlib-undefined option doesn't seem to

allow undefined symbols in DLLs as advertized.



To reproduce this:



$ cat foo.c

#include "foo.h"

void toto() {

}

$ 

$ gcc -shared -o foo.dll foo.c

$ 

$ cat bar.c

#include "bar.h"

#include "foo.h"

void bar() {

  foo();

}

$ 

$ gcc -shared -o bar.dll bar.c

C:/DOCUME~1/PAPADO~1.POB/LOCALS~1/Temp/ccspbaaa.o(.text+0x7):bar.c:

undefined reference to `foo'

$ 



So far so good. There's indeed an undefined reference.

Now try --allow-shlib-undefined to allow for these

undefined references:



$ gcc -shared -Wl,--allow-shlib-undefined -o bar.dll bar.c

C:/DOCUME~1/PAPADO~1.POB/LOCALS~1/Temp/ccspbaaa.o(.text+0x7):bar.c:

undefined reference to `foo'

$ 



I'm filing this as a gcc issue because callling ld

directly does work:



$ ld -r -o bar.dll bar.o

$ ld -r --allow-shlib-undefined -o bar.dll bar.o

$ 



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