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LIBRARY_PATH not used before /usr/lib anymore in gcc 4.2 and later?
- From: Frederik <freggy at gmail dot com>
- To: gcc-help at gcc dot gnu dot org
- Date: Wed, 11 Jun 2008 12:27:45 +0000 (UTC)
- Subject: LIBRARY_PATH not used before /usr/lib anymore in gcc 4.2 and later?
I've got different versions of the boost libraries installed on my
system: one is installed system wide in /usr/lib64, while other versions
are installed in /cvos/shared/apps/boost/gcc-4./1.35.0, compiled
with the respective different versions of gcc.
When I want to use one of the custom built libraries, I set the CPATH,
LIBRARY_PATH and LD_LIBRARY_PATH variables to the respective include
files and libraries.
For the gcc 4.1 one, this works correctly:
$ g++ -o test test.cpp -lboost_regex
$ ldd test | grep boost
libboost_regex.so.1.35.0 => /cvos/shared/apps/boost/
And without the environment vars set, it links against the one in /usr/
libboost_regex.so.2 => /usr/lib64/libboost_regex.so.2
However when I do exactly the same with gcc 4.2 and gcc 4.3, it always
links against the libboost_regex.so.2 on in /usr/lib64 and not against
the libboost_regex.so.1.35.0 in /cvos/shared/apps/boost/gcc-4./1.35.0/
lib, even though the LIBRARY_PATH and LD_LIBRARY_PATH variables have this
directory set as first.
The versions used are gcc 4.1.2 20070626 (Red Hat 4.1.2-14), stock gcc
4.2.4 and stock gcc 4.3.1.
Has this behaviour changed in gcc 4.2, or is it something RH specific
which makes that it works with my gcc 4.1?