Re: gcov cannot find $UNIX2003 symbols in Xcode 3
Re: gcov cannot find $UNIX2003 symbols in Xcode 3
- Subject: Re: gcov cannot find $UNIX2003 symbols in Xcode 3
- From: Alastair Houghton <email@hidden>
- Date: Mon, 29 Oct 2007 16:50:46 +0000
On 29 Oct 2007, at 16:20, Peter O'Gorman wrote:
File a bug. libgcov.a in the 10.4u SDK uses symbols from libc that are
only available on 10.5. If you have a 10.4 machine handy copy the
libgcov.a from there into your 10.4u SDK.
Well that explains why it was picking up the wrong libgcov.a I
suppose. I just took a look myself, and:
Indirect symbols for (__IMPORT,__jump_table) 17 entries
address index name
0x000047ab 26 _fdopen
0x000047b0 32 _fwrite$UNIX2003 <-----
0x000047b5 23 _close$UNIX2003 <-----
0x000047ba 34 _memcmp
0x000047bf 25 _fcntl$UNIX2003 <-----
0x000047c4 28 _fread
0x000047c9 30 _fstat
0x000047ce 22 _atexit
0x000047d3 19 ___error
0x000047d8 27 _fprintf
0x000047dd 31 _ftell
0x000047e2 33 _getpid
0x000047e7 35 _memset
0x000047ec 37 _setbuf
0x000047f1 36 _open$UNIX2003 <-----
0x000047f6 24 _fclose
0x000047fb 29 _fseek
Incidentally, copying the libgcov.a from 10.4 might not be the best
way to work around this. I don't know (because I haven't looked), but
it's *possible* that if you do that, then running gcov from the
command line on Leopard might malfunction somehow. However, you
should be able to run Tiger's gcov, I suppose, *on Tiger*, if you do
this.
An alternative might be to create a file containing the following:
#
# Aliases to fix the gcov problem for programs built against the
10.4u SDK
#
_fwrite _fwrite$UNIX2003
_close _close$UNIX2003
_fcntl _fcntl$UNIX2003
_open _open$UNIX2003
then pass it as the argument of an -alias_list linker argument. I
should say that I don't know for certain this will work as I haven't
tried it, but if you have problems with gcov after replacing that
library, you could put the original library back and give it a whirl.
Kind regards,
Alastair.
--
http://alastairs-place.net
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