Re: Libtool API suggestion: LTDL_SHLIB_PRE and/or char* ltdl_map_shared_name(const char* name)

[Albert Chin]

On Tue, Aug 23, 2005 at 08:20:42PM +0200, Dalibor Topic wrote:
> It would be nice if libtool provided a way to either map a short dynamic
> library name to a full name (say, something -> libsomething.so) or
> offered an autoconfish way to get the platform-specifc shared library
> prefix, like it does for the suffix.
> 
> I've seen that a similar problem occured for GNU readline on cygwin[1],
> and they went for a platform-specific set of properties in the
> makefiles. I guess it would be more efficient if libtool provided a
> central API for that, rather than to see projects reinventing the wheel.
> 
> It also seems that ltdl.c uses the "lib" prefix specifically in one case
> [2] , where it may or may not make sense to use a hypothetical
> LTDL_SHLIB_PRE.

so:
  if x$need_lib_prefix = xno; then
    LTDL_SHLIB_PRE=
  else
    LTDL_SHLIB_PRE="lib"
  fi

> [2] ltdl.c from HEAD:
>     812               if (strncmp(p, "-l", 2) == 0)
>     813                 {
>     814                   size_t name_len = 3+ /* "lib" */ LT_STRLEN (p
> + 2);
>     815                   name = MALLOC (char, 1+ name_len);
>     816                   if (name)
>     817                     sprintf (name, "lib%s", p+2);
>     818                 }

>From inspection, this appears wrong. It doesn't honor
$need_lib_prefix. Should we have a separate prefix variable like
$shrext_cmds so we don't have to do things like:
    case $host_os in
    cygwin*)
      # Cygwin DLLs use 'cyg' prefix rather than 'lib'
      soname_spec='`echo ${libname} | sed -e 's/^lib/cyg/'``echo ${release} | 
$SED -e 's/[[.]]/-/g'`${versuffix}${shared_ext}'
      ;;

-- 
albert chin (address@hidden)