ltconfig

[Daniel R. Grayson]

Ltconfig produces this message on my i686-pc-linux-gnu system.

    *** Warning: the command libtool uses to detect shared libraries,
    *** /usr/bin/file, produces output that libtool cannot recognize.
    *** The result is that libtool may fail to recognize shared libraries
    *** as such.  This will affect the creation of libtool libraries that
    *** depend on shared libraries, but programs linked with such libtool
    *** libraries will work regardless of this problem.  Nevertheless, you
    *** may want to report the problem to your system manager and/or to
    *** address@hidden

It was using these values:

    file_magic_test_file = "/lib/libc.so /lib/libc.so.6 /lib/libc-2.2.5.so"
    file_magic_regex = "ELF [0-9][0-9]*-bit [LM]SB (shared object|dynamic lib )"

On our system (a new Linux distribution under development) everything in /usr
is a symbolic link (this is so packages can be maintained more easily).

    rhenium# file /lib/libc.so /lib/libc.so.6 /lib/libc-2.2.5.so
    /lib/libc.so:       symbolic link to ../../opt/glibc-2.2.5/lib/libc.so
    /lib/libc.so.6:     symbolic link to ../../opt/glibc-2.2.5/lib/libc.so.6
    /lib/libc-2.2.5.so: symbolic link to ../../opt/glibc-2.2.5/lib/libc-2.2.5.so

The -L option to "file" would eliminate that message.


       -L      option causes symlinks  to  be  followed,  as  the
               like-named option in ls(1).  (on systems that sup-
               port symbolic links).


    rhenium# file -L /lib/libc.so /lib/libc.so.6 /lib/libc-2.2.5.so
    /lib/libc.so:       ASCII C program text
    /lib/libc.so.6:     ELF 32-bit LSB shared object, Intel 80386, version 1 
(SYSV), not stripped
    /lib/libc-2.2.5.so: ELF 32-bit LSB shared object, Intel 80386, version 1 
(SYSV), not stripped

Thus I recommend this patch:

    Only in libIDL-0.6.8: .source-untarred
    diff -ur tmp/libIDL-0.6.8/ltconfig libIDL-0.6.8/ltconfig
    --- tmp/libIDL-0.6.8/ltconfig       1999-10-17 13:03:32.000000000 -0500
    +++ libIDL-0.6.8/ltconfig   2002-07-14 08:24:20.000000000 -0500
    @@ -1878,7 +1878,7 @@
       shlibpath_var=LD_LIBRARY_PATH
       shlibpath_overrides_runpath=no
       deplibs_check_method='file_magic ELF [0-9][0-9]*-bit [LM]SB (shared 
object|dynamic lib )'
    -  file_magic_cmd=/usr/bin/file
    +  file_magic_cmd="/usr/bin/file -L"
       file_magic_test_file=`echo /lib/libc.so* /lib/libc-*.so`

       if test -f /lib/ld.so.1; then