libgij and libgcj link to different libgcc_s.so

Fri Aug 25 11:40:00 GMT 2006

Hanno Meyer-Thurow writes:
 > Hi list,
 > it looks like this:
 > 
 > # ldd /opt/gcj-4.2.0_alpha20060819/lib/libgij.so.8.0.0 
 > 	libgcc_s.so.1 => /opt/gcj-4.2.0_alpha20060819/lib/libgcc_s.so.1 (0xb636a000)
 > 
 > # ldd /opt/gcj-4.2.0_alpha20060819/lib/libgcj.so.8.0.0 
 > /opt/gcj-4.2.0_alpha20060819/lib/libgcj.so.8.0.0: /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/libgcc_s.so.1: version `GCC_4.2.0' not found (required by /opt/gcj-4.2.0_alpha20060819/lib/libgcj.so.8.0.0)
 > 	libgcc_s.so.1 => /usr/lib/gcc/i686-pc-linux-gnu/4.1.1/libgcc_s.so.1 (0xb6376000)
 > 
 > 
 > Shouldn't libgcj also link to the correct one?
Looks like libgij has an RPATH entry and libgcj doesn't:
zorro:~ $ readelf -d /usr/local/lib64/libgij.so
Dynamic section at offset 0x2028 contains 25 entries:
 Tag Type Name/Value
 0x0000000000000001 (NEEDED) Shared library: [libgcj.so.7rh]
 0x0000000000000001 (NEEDED) Shared library: [libgcc_s.so.1]
 0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
 0x000000000000000e (SONAME) Library soname: [libgij.so.7rh]
 0x0000000000000010 (SYMBOLIC) 0x0
 0x000000000000000f (RPATH) Library rpath: [/usr/local/lib/../lib64]
zorro:~ $ readelf -d /usr/local/lib64/libgcj.so
Dynamic section at offset 0x211e128 contains 26 entries:
 Tag Type Name/Value
 0x0000000000000001 (NEEDED) Shared library: [libpthread.so.0]
 0x0000000000000001 (NEEDED) Shared library: [librt.so.1]
 0x0000000000000001 (NEEDED) Shared library: [libdl.so.2]
 0x0000000000000001 (NEEDED) Shared library: [libgcc_s.so.1]
 0x0000000000000001 (NEEDED) Shared library: [libc.so.6]
 0x0000000000000001 (NEEDED) Shared library: [ld-linux-x86-64.so.2]
 0x000000000000000e (SONAME) Library soname: [libgcj.so.7rh]
In general, we don't have absolute RPATH entries for libraries because
it causes a ton of other problems, particularly as it makes it
impossible to move libraries around. If you're running gcj in a
nonstandard place, you'll just have to se LD_LIBRARY_PATH when you run
a program. 
Andrew.