Error when compile under Linux for SPARC: /usr/bin/ld: skipping
incompatible .o
lazarus / 66-Unix

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IgorM · 2017-06-13 11:53

Hi!

When I compile my program on Linux for SPARC, I've got error:
[root@host1 fpc]# fpc hello.pas
Free Pascal Compiler version 3.0.2 [2017/05/07] for sparc
Copyright (c) 1993-2017 by Florian Klaempfl and others
Target OS: Linux for SPARC
Compiling hello.pas
Assembling hello
Linking hello
/usr/bin/ld: warning: link.res contains output sections; did you
forget -T?
/usr/bin/ld: skipping incompatible hello.o when searching for hello.o
/usr/bin/ld: skipping incompatible ./hello.o when searching for
hello.o
/usr/bin/ld: cannot find hello.o
hello.pas(5,40) Error: Error while linking
hello.pas(5,40) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted
Error: /usr/bin/ppcsparc returned an error exitcode
[root@host1 fpc]#


Could you please advise - what is wrong?

Thanx!

Best Regards
Igor Melnikov

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marcov · 2017-06-13 12:01

The format of .o that the compiler generates and that the linker wants
don't match.

Wrong linker or compiler or wrong linker/compiler target.

Some linkers can accept multiple kinds of .o, but need parameters to
switch (usually -m., which can be passed via the compiler using -k)

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IgorM · 2017-06-13 13:01

Hi Marcov!

Thanx!
Object-file , generated by fpc is " ELF 64-bit":
[root@host1 fpc]# file hello.o
hello.o: ELF 64-bit MSB relocatable, SPARC V9, relaxed memory
ordering, version 1 (SYSV), not stripped

When I sent to linker this target (elf64-sparc), the same error occur.
What target expect linker? - How verify full linker parameters
generated by fpc ?
[root@host1 fpc]# fpc hello.pas -k-belf64-sparc
Free Pascal Compiler version 3.0.2 [2017/05/07] for sparc
Copyright (c) 1993-2017 by Florian Klaempfl and others
Target OS: Linux for SPARC
Compiling hello.pas
Assembling hello
Linking hello
/usr/bin/ld: warning: link.res contains output sections; did you
forget -T?
/usr/bin/ld: skipping incompatible hello.o when searching for hello.o
/usr/bin/ld: skipping incompatible ./hello.o when searching for
hello.o
/usr/bin/ld: cannot find hello.o
hello.pas(5,40) Error: Error while linking
hello.pas(5,40) Fatal: There were 1 errors compiling module, stopping
Fatal: Compilation aborted
Error: /usr/bin/ppcsparc returned an error exitcode


Thank you!

Best Regards
Igor Melnikov

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MarkMLl · 2022-06-15 13:22

This thread died of natural causes, but since it's the one turned up
by search engines I thought it worth tacking a comment onto it.
However since SPARC as a target seems to have very little life left in
it this is more in the spirit of wrapping up loose ends than anything
else.

I commented incorrectly to this that I thought I'd seen this on a
SPARC (i.e. 32-bit) platform, and was suspicious that it was something
to do with an attempt to move a compiler built on Debian 8 or 9
("Lenny" or "Stretch", circa 2015 or 2017 respectively) to Debian 10
("Buster", 2019) possibly the result of an incompatible linker
version.

However I later realised that the Debian 10 system was, in fact,
SPARC64 and that my problems stemmed at least in part from trying to
run a 32-bit compiler on it. I've not explored to what extent this can
be worked around with Debian's multiarch libraries, since the tenuous
nature of Debian's support for the SPARC64 port introduces far too
many potential points of failure for comfort.

Hence I think the first thing to suspect when seeing this sort of
issue from a trivial program

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1>markMLl@sunfire:~$ fpc test.pasFree Pascal Compiler version 3.0.4
[2017/11/10] for sparcCopyright (c) 1993-2017 by Florian Klaempfl and
othersTarget OS: Linux for SPARCCompiling test.pasAssembling
testLinking test/usr/bin/ld: warning: link.res contains output
sections; did you forget -T?/usr/bin/ld: skipping incompatible test.o
when searching for test.o/usr/bin/ld: skipping incompatible ./test.o
when searching for test.o/usr/bin/ld: cannot find test.otest.pas(6)
Error: Error while linkingtest.pas(6) Fatal: There were 1 errors
compiling module, stoppingFatal: Compilation abortedError:
/usr/local/bin/ppcsparc returned an error exitcode 
is a mismatch between a 64-bit OS and a version of FPC generating
32-bit code, i.e. as repeatedly experienced by people on the x86 and
x86_64 platforms.

Having said which, 32-bit SPARC FPC 3.2.2 installed from Sourceforge
appears to work with Debian 10 SPARC to an extent that it compiles
simple programs to a runnable state. It is not, however, able to build
anything complex like the Lazarus IDE.

MarkMLl