Okay, in further investigation I am now manually forcing fpc to use i386-linux-ld for linking by using the "-Pi386 -XPi386-linux-" compiler flags (-P for the target and -XP for the binutils prefix). I assume there's something wrong in my fpc.cfg or it would do this manually, but I don't know what it is. Still, at least I'm getting i386-linux-ld to be called.
However, ld is still not searching /usr/lib32. I also tried manually adding -Fl/usr/lib32 to the fpc command line but that didn't help. So apparently I have to somehow tell ld to look there... -SG -- This email is fiction. Any resemblance to actual events or persons living or dead is purely coincidental. Seth Grover sethdgrover[at]gmail[dot]com On Mon, Nov 2, 2009 at 12:45 PM, Seth Grover <sethdgro...@gmail.com> wrote: > I'm trying to cross-compile on Ubuntu 9.10 x86_64 for i386. Here's > what I've done so far: > > I got FPC from the fixes_2_4 branch in SVN and did make/make install. > > I used samplecfg to generate /etc/fpc/fpc.cfg. > > I followed the wiki > (http://wiki.lazarus.freepascal.org/Cross_compiling#To_Linux) and did > the steps listed there, including creating the i386-linux-ld and > i386-linux-ls scripts in /usr/bin and compiling for the i386 target, > so I ended up with a ppc386. > > At this point I could do a simple "hello world" program which would > generate a 64-bit binary if i selected x86_64 for the target in > lazarus under "Compiler Options | Code" and a 32-bit binary if i > selected i386 as the target. So far so good. > > I then tried to compile something a bit more complicated (not that > much more, though: I just tried to include "cthreads") and I got an > error about crti.so not being found: > > /usr/bin/ld: skipping incompatible /usr/lib/crti.o when searching for > /usr/lib/crti.o > /usr/bin/ld: cannot find /usr/lib/crti.o > build.lpr(16,1) Error: Error while linking > > As the Wiki is extremely vague as to what to do for fpc.cfg (Sorry, > but "Edit your /etc/fpc.cfg file if needed" is not very useful), I did > change this line: > > #-Fl/lib;/usr/lib > > to > > -Fl/lib;/usr/lib;-Fl/lib32;/usr/lib32 > > However, to no avail. However, I did discover that /usr/lib32 doesn't > even have crti.o, so a little more investigation made me realize I > needed to install the "libc6-dev-i386" package, after which I did, in > fact, have that file. > > However, I'm still unable to compile a 32-bit executable that includes > "cthreads" in its uses clause. ld still complains about not being able > to find crti.o, despite my having added /usr/lib32 to the -Fl line of > my fpc.cfg. > > I do have this in my fpc.cfg: > ============================== > # set binutils prefix > > #IFNDEF CPUI386 > #IFNDEF CPUAMD64 > #DEFINE NEEDCROSSBINUTILS > #ENDIF > #ENDIF > > > #IFNDEF linux > #DEFINE NEEDCROSSBINUTILS > #ENDIF > > > #IFDEF FPC_CROSSCOMPILING > #IFDEF NEEDCROSSBINUTILS > -XP$fpctarget- > #ENDIF NEEDCROSSBINUTILS > #ENDIF > ============================== > > but I don't know if that's correct or whatever, that's just what > samplecfg generated. > > Observe: > compiling for 64-bit > ============================== > $ /usr/local/bin/fpc -MObjFPC -Scgi -O1 -gl -vewnhi -l -Fu. -obuild build.lpr > Hint: Start of reading config file /etc/fpc.cfg > Hint: End of reading config file /etc/fpc.cfg > Free Pascal Compiler version 2.3.1 [2009/11/02] for x86_64 > Copyright (c) 1993-2009 by Florian Klaempfl > Target OS: Linux for x86-64 > Compiling build.lpr > Linking build > ld here i am > ld.real: warning: link.res contains output sections; did you forget -T? > 17 lines compiled, 0.2 sec > 2 hint(s) issued > ============================== > > attempting to compile for 32-bit > ============================== > $ /usr/local/bin/fpc -Pi386 -MObjFPC -Scgi -O1 -gl -vewnhi -l -Fu. > -obuild build.lpr > Hint: Start of reading config file /etc/fpc.cfg > Hint: End of reading config file /etc/fpc.cfg > Free Pascal Compiler version 2.3.1 [2009/11/02] for i386 > Copyright (c) 1993-2009 by Florian Klaempfl > Target OS: Linux for i386 > Compiling build.lpr > Linking build > ld: warning: link.res contains output sections; did you forget -T? > ld: skipping incompatible /usr/lib/crti.o when searching for /usr/lib/crti.o > ld: cannot find /usr/lib/crti.o > build.lpr(16,1) Error: Error while linking > build.lpr(16,1) Fatal: There were 1 errors compiling module, stopping > Fatal: Compilation aborted > Error: /usr/local/bin/ppc386 returned an error exitcode (normal if you > did not specify a source file to be compiled) > ============================== > > I sort of think that /usr/bin/i386-linux-ld isn't being called. I > added an "echo here I am" sort of line to that bash script, and I > never see that echo happen. > > I'm sure there's some magic I need to do in my fpc.cfg file, but I'm > having a hard time finding specifically what it is. I'd really like to > be able to compile for x86_64 and i386 in the same development > environment simply by selecting a different target from the Lazarus UI > and have it "just work." > > If anyone can offer assistance, I'd surely appreciate it. > > -SG > > -- > This email is fiction. Any resemblance to actual events > or persons living or dead is purely coincidental. > > Seth Grover > sethdgrover[at]gmail[dot]com > _______________________________________________ fpc-pascal maillist - fpc-pascal@lists.freepascal.org http://lists.freepascal.org/mailman/listinfo/fpc-pascal
