[fpc-pascal] Linker fails cross compiling from Linux to Mac.

[Bruce Tulloch]

Any other thoughts as to what I should do or information I can provide to
help diagnose this further? It would be a shame to loose the ability to
cross compile to Mac. Bruce.
On Jan 8, 2013 10:07 PM, "Bruce Tulloch" <pascal at causal.com> wrote:

> On Tue, Jan 8, 2013 at 9:04 PM, Jonas Maebe <jonas.maebe at elis.ugent.be>
> wrote:
> >
> > On 08 Jan 2013, at 10:49, Bruce Tulloch wrote:
> >
> > I had a working Debian Squeeze to Mac OSX Snow Leopard cross-
> >
> > What had changed when it stopped working?
>
> I had to upgrade from Debian Sneeze to Wheezy (for other reasons) and
> the previously built odcctools linker (derived from the older
> cctools-758) required libraries no longer available in Wheezy which
> required that I rebuild it from source but the long dead odcctools
> source was no longer available so I rebuilt from Apple's upstream
> cctools-809 with the new patches.
>
> > This suggests that you are using a linker that is too old.
>
> Should be okay, cctool-809 is 10.6 aware (the
> get_macosx_deployment_target() function in the linker reports 10.6
> when run).
>
> > Are you certain that the used  i386-darwin-ld is the one you built from
> cctools-809?
>
> Yep, I already checked this.
>
> ppas.sh reports /usr/local/opt/cctools/bin/i386-darwin-ld which is correct.
>
> The linker is built with this script (working in a repository I created):
>
> #!/bin/bash
>
> # Compilation parameters, adjust as required...
>
> export TARGET=i386-darwin # OSX target (i386-darwin or x86_64-darwin)
> export SYSROOT=/usr/local/opt/osx/MacOSX10.6.sdk # OSX SDK root
> export CCTOOLS="809" # OSX cctools version (must be a patched for linux)
> export PREFIX=/usr/local/opt/cctools # build host installation directory
>
> cd cctools # working repository
>
> # Checkout revision and patch
>
> hg update -C cctools-$CCTOOLS
> hg -R $(hg root)/.hg/patches update -C cctools-$CCTOOLS
> hg qpush --all
>
> # configure and build
>
> autoconf && chmod +x configure
> CFLAGS="-m32 -D__DARWIN_UNIX03" LDFLAGS="-m32" ./configure \
> --prefix=$PREFIX \
> --target=$TARGET \
> --with-sysroot=$SYSROOT \
> && make && make install
>
> # cleanup
>
> hg update -C
> hg qpop --all
> hg clean
>
> >> The most obvious thought is that not all objects were built against
> >> the same revision of the SDK but I can confirm they are.
> >
> > That has no influence anyway. Objects are not really built against an
> SDK, only
> > libraries and applications are. The SDK only affects the linking in case
> of Pascal
> > (in case of C/C++, it also affects the compilation because of the used
> headers).
>
> Thanks, understood. It's linking the application that presents the problem.
>
> I've noticed that all errors except these two:
>
> i386-darwin-ld:
> MacOSX10.6.sdk/System/Library/Frameworks/Carbon.framework/Carbon load
> command 4 unknown cmd field
> i386-darwin-ld:
> MacOSX10.6.sdk/System/Library/Frameworks/OpenGL.framework/OpenGL load
> command 5 unknown cmd field
>
> disappear IF I enable debug symbols when compiling. Don't know if this
> is a clue and it does not appear to matter which type of debug info I
> enable.
>
> Bruce.
>
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