[Bug libstdc++/22339] New: iconv functions not found by libstdc++v3 configure

[mjscod at gmx dot de]

The iconv functions (iconv, iconv_open, and iconv_close) cannot be found by
configure because it doesn't include "iconv.h" where iconv is defined as
libiconv, iconv_open as libiconv_open, and iconv_close as libiconv_close.

I suggest changing the iconv functions to:

1. check if iconv.h exists
2. when checking for iconv, iconv_open, and iconv_close then include the iconv.h
header, otherwise use the explicit prototype.

-- 
           Summary: iconv functions not found by libstdc++v3 configure
           Product: gcc
           Version: 4.0.1
            Status: UNCONFIRMED
          Severity: normal
          Priority: P2
         Component: libstdc++
        AssignedTo: unassigned at gcc dot gnu dot org
        ReportedBy: mjscod at gmx dot de
                CC: gcc-bugs at gcc dot gnu dot org
 GCC build triplet: i686-pc-mingw32
  GCC host triplet: i686-pc-mingw32
GCC target triplet: i686-pc-mingw32


http://gcc.gnu.org/bugzilla/show_bug.cgi?id=22339