libgcj-4 puts /usr/lib before LD_LIBRARY_PATH in any case

Wed Nov 22 14:07:00 GMT 2006

Yuval Kfir writes:
 > I wrote:
 > > > We have a native shared library that depends on a library called
 > > > libuuid.so. This is not the default /usr/lib/libuuid.so but a
 > > > completely different library, and the directory containing it is
 > the
 > > > first directory in LD_LIBRARY_PATH.
 > 
 > Andrew Haley asked:
 > > 
 > > OK. How is the native shared library that depends on libuuid.so
 > loaded?
 > > 
 > > What does 'ldd <libname>' say about it?
 > 
 > The Java class we're testing with consists simply of a single main
 > function that calls System.loadLibrary("wmdll"). The file libwmdll.so
 > is present in the current directory.
 > 
 > This is the output of 'ldd -r libwmdll.so'. Note the fourth library,
 > libuuid.
OK, I tried this:
I have two libraries in . libpoo.so and libpoo2.so
LD_LIBRARY_PATH=/mnt/zebedee:/home/aph/gcc/gcj-eclipse-merge-branch/install/lib64/
$ ldd libpoo.so
 libpoo2.so => /mnt/zebedee/libpoo2.so (0x00002aaaaabae000)
 libc.so.6 => /lib64/libc.so.6 (0x00002aaaaacc7000)
 /lib64/ld-linux-x86-64.so.2 (0x0000555555554000)
public class p
{
 public static void main(String[] s)
 {
 System.loadLibrary("poo");
 }
}
 $ strace -f -etrace=file ./a.out
...
[pid 3019] open("/usr/lib64/gcj-4.1.1/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/mnt/zebedee/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/home/aph/gcc/gcj-eclipse-merge-branch/install/lib64/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/mnt/zebedee/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/home/aph/gcc/gcj-eclipse-merge-branch/install/lib64/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/lib64/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/usr/lib64/libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("libpoo.la", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] access("/usr/lib64/gcj-4.1.1/libpoo.so", R_OK) = -1 ENOENT (No such file or directory)
[pid 3019] access("/mnt/zebedee/libpoo.so", R_OK) = 0
[pid 3019] open("/mnt/zebedee/libpoo.so", O_RDONLY) = 7
[pid 3019] open("/mnt/zebedee/libpoo2.so", O_RDONLY) = 7
[pid 3019] open("/usr/share/locale/locale.alias", O_RDONLY) = 7
[pid 3019] open("/usr/share/locale/en_US.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/usr/share/locale/en_US.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/usr/share/locale/en_US/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/usr/share/locale/en.UTF-8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/usr/share/locale/en.utf8/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
[pid 3019] open("/usr/share/locale/en/LC_MESSAGES/libc.mo", O_RDONLY) = -1 ENOENT (No such file or directory)
I certainly can't see libgcj looking lin /usr/lib* for .so files.
Andrew.