Re: Building 4.0.3 with local gcc on Linux

[Toby Darling]

Hi Mike

> > I'm trying to build 4.0.3 with a local version of gcc. The build succeeds
> > but octave fails to start:
> >
> > address@hidden: ./run-octave
> > /tmp/toby/octave-build/src/.libs/lt-octave-gui: /usr/lib64/libstdc++.so.6:
> > version `GLIBCXX_3.4.15' not found (required by
> > /tmp/toby/octave-build/libgui/.libs/liboctgui.so.1)
> >
> > The problem is, I can't figure out how to make octave/libtool use the
> > libraries from my gcc installation rather than the system ones. I've tried
> > setting LD_LIBRARY_PATH, LD_RUN_PATH, even GCC_EXEC_PREFIX to no avail.
> >
> > Host is Scientific Linux 6.7 (RHEL)
> > Linux max.lmb.internal 2.6.32-573.12.1.el6.x86_64 #1 SMP Tue Dec 15 08:24:23
> > CST 2015 x86_64 x86_64 x86_64 GNU/Linux
> >
> > address@hidden: which gcc; gcc --version
> > /public/gcc/4_8_3/bin/gcc
> > gcc (GCC) 4.8.3
> >
> > Any pointers much appreciated. Many thanks.
>
> LD_LIBRARY_PATH is the correct variable to use. The above message
> references /usr/lib64/libstdc++.so.6, so LD_LIBRARY_PATH either wasn't
> set or wasn't correct.

Thanks for confirming. This is what's confusing me:

address@hidden: find ${LD_LIBRARY_PATH//:/ } -name libstdc++.so* -ls
23659861 6412 -rwxr-xr-x   1 toby     toby      6472019 Sep 19 13:35 
/public/gcc/4_8_3/lib64/libstdc++.so.6.0.19
23659869    7 -rw-r--r--   1 toby     toby         2327 Sep 19 13:35 
/public/gcc/4_8_3/lib64/libstdc++.so.6.0.19-gdb.py
23659863    0 lrwxrwxrwx   1 toby     toby           19 Sep 19 13:35 
/public/gcc/4_8_3/lib64/libstdc++.so -> libstdc++.so.6.0.19
23659862    0 lrwxrwxrwx   1 toby     toby           19 Sep 19 13:35 
/public/gcc/4_8_3/lib64/libstdc++.so.6 -> libstdc++.so.6.0.19
23660561    7 -rw-r--r--   1 toby     toby         2325 Sep 19 13:35 
/public/gcc/4_8_3/lib/libstdc++.so.6.0.19-gdb.py
23660555    0 lrwxrwxrwx   1 toby     toby           19 Sep 19 13:35 
/public/gcc/4_8_3/lib/libstdc++.so -> libstdc++.so.6.0.19
23660553 5132 -rwxr-xr-x   1 toby     toby      5164587 Sep 19 13:35 
/public/gcc/4_8_3/lib/libstdc++.so.6.0.19
23660554    0 lrwxrwxrwx   1 toby     toby           19 Sep 19 13:35 
/public/gcc/4_8_3/lib/libstdc++.so.6 -> libstdc++.so.6.0.19

address@hidden: file /public/gcc/4_8_3/lib64/libstdc++.so.6.0.19
/public/gcc/4_8_3/lib64/libstdc++.so.6.0.19: ELF 64-bit LSB shared 
object, x86-64, version 1 (SYSV), dynamically linked, not stripped

I've tried 'strace -f -o run.log ./run-octave' and interestingly it does 
look at my libstdc++, but then goes on and tries to use the system version:

26608 open("/public/gcc/4_8_3/lib64/libstdc++.so.6", O_RDONLY) = 3
26608 read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\320\256\5\0\0\0\0\0"..., 
832) = 832
26608 fstat(3, {st_mode=S_IFREG|0755, st_size=6472019, ...}) = 0
26608 mmap(NULL, 3179776, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x7f8375edb000
26608 mprotect(0x7f8375fc6000, 2093056, PROT_NONE) = 0
26608 mmap(0x7f83761c5000, 40960, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xea000) = 0x7f83761c5000
26608 mmap(0x7f83761cf000, 83200, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x7f83761cf000
26608 close(3)                          = 0
...
26800 open("/usr/lib64/libstdc++.so.6", O_RDONLY) = 3
26800 read(3, 
"\177ELF\2\1\1\0\0\0\0\0\0\0\0\0\3\0>\0\1\0\0\0\360c\245\2012\0\0\0"..., 
832) = 832
26800 fstat(3, {st_mode=S_IFREG|0755, st_size=989840, ...}) = 0
26800 mmap(0x3281a00000, 3166648, PROT_READ|PROT_EXEC, 
MAP_PRIVATE|MAP_DENYWRITE, 3, 0) = 0x3281a00000
26800 mprotect(0x3281ae8000, 2097152, PROT_NONE) = 0
26800 mmap(0x3281ce8000, 36864, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_DENYWRITE, 3, 0xe8000) = 0x3281ce8000
26800 mmap(0x3281cf1000, 82360, PROT_READ|PROT_WRITE, 
MAP_PRIVATE|MAP_FIXED|MAP_ANONYMOUS, -1, 0) = 0x3281cf1000
26800 close(3)                          = 0

I've rechecked the 'make check' output in my libsdtc++ build and there 
are no unexpected failures.

Cheers
Toby
--
Toby Darling, Scientific Computing (2N249)
MRC Laboratory of Molecular Biology
Francis Crick Avenue
Cambridge Biomedical Campus
Cambridge CB2 0QH
Phone 01223 267070