Passing arguments into LDFLAGS

[Paul F. Johnson]

Hi,

I know I can do the likes of 

export CFLAGS="$CFLAGS -blah" and it will pass whatever CFLAGS is plus
the argument "-blah" to the compiler.

How do I do this with LDFLAGS. I'm trying to pass --build-id using

export LDFLAGS="$LDFLAGS --build-id"

It's about the only way I can get mono to build currently!

TTFN

Paul
-- 
Vertraue mir, ich weiss, was ich mache...

[Ralf Corsepius]

On 09/22/2010 02:08 PM, Paul F. Johnson wrote:
>  Hi,
>
>  I know I can do the likes of
>
>  export CFLAGS="$CFLAGS -blah" and it will pass whatever CFLAGS is plus
>  the argument "-blah" to the compiler.
>
>  How do I do this with LDFLAGS. 
Depends on a build-system's internals.

>  I'm trying to pass --build-id using
>
>  export LDFLAGS="$LDFLAGS --build-id" 
In many cases, this is _the way_ how
to do it.

Another possibility would be to add linker flags to CFLAGS.
Something similar to -Wl,<flags to pass to the linker>, c.f. man gcc for 
details.

>  It's about the only way I can get mono to build currently!
... no clues about mono on my part.

... and I am not sure if --build-id is a linker option or a general GCC
option (This would mean it should be added to CFLAGS).

Ralf

[Stephen Gallagher]

-----BEGIN PGP SIGNED MESSAGE-----
Hash: SHA1

On 09/22/2010 08:08 AM, Paul F. Johnson wrote:
>  Hi,
>  
>  I know I can do the likes of 
>  
>  export CFLAGS="$CFLAGS -blah" and it will pass whatever CFLAGS is plus
>  the argument "-blah" to the compiler.
>  
>  How do I do this with LDFLAGS. I'm trying to pass --build-id using
>  
>  export LDFLAGS="$LDFLAGS --build-id"
>  
>  It's about the only way I can get mono to build currently!
>  
>  TTFN
>  
>  Paul 
Try
export LDFLAGS="$LDFLAGS -Wl,--build-id"

- -Wl, means "pass the part after the comma directly to the linker"

- -- 
Stephen Gallagher
RHCE 804006346421761

Delivering value year after year.
Red Hat ranks #1 in value among software vendors.
http://www.redhat.com/promo/vendor/
> -----BEGIN PGP SIGNATURE-----
> Version: GnuPG v1.4.10 (GNU/Linux)
> Comment: Using GnuPG with Fedora - http://enigmail.mozdev.org/
>
> iEYEARECAAYFAkyaC6MACgkQeiVVYja6o6P8YACggeE31YsEfvUr288y/gbndzSz
> gVMAn3xWeN1IOcjNogysRM/g326GegEc
> =KXwX
> -----END PGP SIGNATURE-----

[Garrett Holmstrom]

Stephen Gallagher wrote:
>  On 09/22/2010 08:08 AM, Paul F. Johnson wrote:
> > I know I can do the likes of 
> >
> > export CFLAGS="$CFLAGS -blah" and it will pass whatever CFLAGS is plus
> > the argument "-blah" to the compiler.
> >
> > How do I do this with LDFLAGS. I'm trying to pass --build-id using
> >
> > export LDFLAGS="$LDFLAGS --build-id"
> >
> > It's about the only way I can get mono to build currently!
> >
> > TTFN
> >
> > Paul
>  
>  Try
>  export LDFLAGS="$LDFLAGS -Wl,--build-id"
>  
>  - -Wl, means "pass the part after the comma directly to the linker" 
This.  When gcc is used to indirectly call ld, it won't always pass the 
$LDFLAGS to the linker.  To force it to you have to use the -Wl switch 
and replace all spaces in the switch with commas.  For example:

LDFLAGS="-Wl,-O1 -Wl,--sort-common -Wl--build-id -s"

[Roland McGrath]

As I said before, this is almost certainly the wrong fix.  If you share
your code already, you will get the help you need quickly.  As long as you
don't, and just ask over-specific questions rather than let people see the
context to help you properly, you will get only frustration.


Thanks,
Roland