[PORTS] Mac OS 10.4/10.5 compile issues

[Israel Brewster]

I am developing an application that links against libpq on Mac OS
10.5. I want this application to be able to run on both 10.4 and 10.5.
So far I have it working fine on my 10.5 build machine. However, when
I try moving it to a 10.4 machine, I run into problems apparently
related to the libpq build.

My first attempt was with a "standard" universal binary build of
postgresql (CFLAGS="-O -g -arch i386 -arch ppc" ./configure; make;
make install ) This produced a .dylib file that my application happily
linked against, and ran fine on 10.5. When I move the library and
application to 10.4, however, while the application will still launch
and run, as soon as I try to use anything from libpq, the program
crashes with the following error:

dyld: lazy symbol binding failed: Symbol not found: _fcntl$UNIX2003
Referenced from: /Volumes/MIS/AssetTracker/AssetTracker.app/
Contents/MacOS/../Frameworks/libpq.5.dylib
Expected in: /usr/lib/libSystem.B.dylib

dyld: Symbol not found: _fcntl$UNIX2003
Referenced from: /Volumes/MIS/AssetTracker/AssetTracker.app/
Contents/MacOS/../Frameworks/libpq.5.dylib
Expected in: /usr/lib/libSystem.B.dylib

It would appear that libpq is looking for something in the libSystem
library that apparently exists on 10.5, but not 10.4. I figured that a
static build of libpq should fix this problem, so I did a make
distclean, and then re-ran the configure command with the --disable-
shared flag to generate a static-only build. Unfortunately, this
resulted in a slew of "undefined symbol" errors when I tried to
compile my app. It would appear that when I don't build the shared
libraries, my app can no longer link against libpq properly. Now,
granted, that could be an issue with my application and not postgres
at all, but I thought I'd ask here and see if maybe there is something
wrong with the way I am building postgres. Thanks for any help that
can be provided.

-----------------------------------------------
Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
[phone] x293
-----------------------------------------------



---------------------------(end of broadcast)---------------------------
TIP 1: if posting/reading through Usenet, please send an appropriate
subscribe-nomail command to ***@postgresql.org so that your
message can get through to the mailing list cleanly

[Benjamin Reed]

Post by Israel Brewster
dyld: lazy symbol binding failed: Symbol not found: _fcntl$UNIX2003
Referenced from: /Volumes/MIS/AssetTracker/AssetTracker.app/
Contents/MacOS/../Frameworks/libpq.5.dylib
Expected in: /usr/lib/libSystem.B.dylib

This means you linked against the 10.5 version of libSystem.

Post by Israel Brewster
library that apparently exists on 10.5, but not 10.4. I figured that a
static build of libpq should fix this problem, so I did a make

There's no such thing as a fully-static build on OSX (well, not
without doing some hackery when linking). You end up with a static
libpq, but libSystem is dynamic-only.

The way to fix this is to add "-isysroot
/Developer/SDKs/MacOSX10.4u.sdk" to your flags, to get the 10.4 SDK.

[Israel Brewster]

Post by Benjamin Reed

Post by Israel Brewster
dyld: lazy symbol binding failed: Symbol not found: _fcntl$UNIX2003
Referenced from: /Volumes/MIS/AssetTracker/AssetTracker.app/
Contents/MacOS/../Frameworks/libpq.5.dylib
Expected in: /usr/lib/libSystem.B.dylib

This means you linked against the 10.5 version of libSystem.

Post by Israel Brewster
library that apparently exists on 10.5, but not 10.4. I figured
that a
static build of libpq should fix this problem, so I did a make

There's no such thing as a fully-static build on OSX (well, not
without doing some hackery when linking). You end up with a static
libpq, but libSystem is dynamic-only.
The way to fix this is to add "-isysroot
/Developer/SDKs/MacOSX10.4u.sdk" to your flags, to get the 10.4 SDK.

Thanks for the info, that looks like exactly what I was looking for.
Unfortunately, when I try CFLAGS="-O -g -arch i386 -arch ppc -
isysroot /Developer/SDKs/MacOSX10.4u.sdk" ./configure, configure fails
with a "C compiler cannot create executables" error. Is this a
problem with my dev tools install or something? It should be clean, as
I haven't messed with it, but this seems odd.

-----------------------------------------------
Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
[phone] x293
-----------------------------------------------

Post by Benjamin Reed
--
Benjamin Reed a.k.a. Ranger Rick
Fink, KDE, and Mac OS X development
http://www.racoonfink.com/

---------------------------(end of broadcast)---------------------------
TIP 7: You can help support the PostgreSQL project by donating at

http://www.postgresql.org/about/donate

[Benjamin Reed]

Post by Israel Brewster
Thanks for the info, that looks like exactly what I was looking for.
Unfortunately, when I try CFLAGS="-O -g -arch i386 -arch ppc -
isysroot /Developer/SDKs/MacOSX10.4u.sdk" ./configure, configure fails
with a "C compiler cannot create executables" error. Is this a
problem with my dev tools install or something? It should be clean, as
I haven't messed with it, but this seems odd.

Hard to say without the config.log; it's kind of difficult to make
everything play nicely with -isysroot sometimes. You often need to
add --disable-dependency-tracking to autotools projects, although
postgresql doesn't use the full autotools suite, so I don't know if
that's necessary.

[Israel Brewster]

Post by Benjamin Reed
Hard to say without the config.log; it's kind of difficult to make
everything play nicely with -isysroot sometimes. You often need to
add --disable-dependency-tracking to autotools projects, although
postgresql doesn't use the full autotools suite, so I don't know if
that's necessary.

Ok, got it, thanks! Turns out it was looking for crt1.10.5.o and
dylib1.10.5.o, but all that was in the SDK usr/lib directory was
dylib1.o and crt1.o. A couple of quick simlinks later, it built
properly and everything appears to be working. Hopefully the
simlinking wasn't something stupid that will come back to bite me
later, but at least for now my app compiles properly and runs on both
10.4 and 10.5 without crashing. Thanks for the help!

-----------------------------------------------
Israel Brewster
Computer Support Technician
Frontier Flying Service Inc.
5245 Airport Industrial Rd
Fairbanks, AK 99709
[phone] x293
-----------------------------------------------

Post by Benjamin Reed
--
Benjamin Reed a.k.a. Ranger Rick
Fink, KDE, and Mac OS X development
http://www.racoonfink.com/

---------------------------(end of broadcast)---------------------------
TIP 7: You can help support the PostgreSQL project by donating at

http://www.postgresql.org/about/donate