Hello, I'am doing some work that equires me to use the stl's hash_map and hash_set .however ,i find no such thing in g++'s standard library .so i download the sgi's stl (version 3.3 ) .As instructed ,i unpack the sgi's stl package in a new directory and using '-I' option to direct the compiler to find the header file 'hash_map' and 'hash_set' .What infrustrated me is the following errors i get: Anyone who knows how to solve it?? In file included from /usr/include/c++/3.2.2/backward/new.h:33, from stl/stl_algobase.h:52, from stl/memory:18, from stl/string:23, from BSC/Dict/JElusDictManager.h:12, from BSC/Dict/JElusDictManager.cpp:1: /usr/include/c++/3.2.2/backward/backward_warning.h:32:2: warning: #warning This file includes at least one deprecated or antiquated header. Please consider using one of the 32 headers found in section 17.4.1.2 of the C++ standard. Examples include substituting the <X> header for the <X.h> header for C++ includes, or <sstream> instead of the deprecated header <strstream.h>. To disable this warning use -Wno-deprecated. In file included from /usr/include/c++/3.2.2/bits/basic_ios.h:40, from /usr/include/c++/3.2.2/ios:51, from /usr/include/c++/3.2.2/ostream:45, from /usr/include/c++/3.2.2/iostream:45, from /usr/include/c++/3.2.2/backward/iostream.h:32, from stl/stl_algobase.h:57, from stl/memory:18, from stl/string:23, from BSC/Dict/JElusDictManager.h:12, from BSC/Dict/JElusDictManager.cpp:1: /usr/include/c++/3.2.2/bits/streambuf_iterator.h: At global scope: /usr/include/c++/3.2.2/bits/streambuf_iterator.h:48: parse error before `<' token /usr/include/c++/3.2.2/bits/streambuf_iterator.h:54: syntax error before `;' token /usr/include/c++/3.2.2/bits/streambuf_iterator.h:55: `_Traits' is not a class or namespace /usr/include/c++/3.2.2/bits/streambuf_iterator.h:55: `int_type' is not a class or namespace /usr/include/c++/3.2.2/bits/streambuf_iterator.h:55: using `typename' outside of template /usr/include/c++/3.2.2/bits/streambuf_iterator.h:55: `_Traits' fails to be a typedef or built in type /usr/include/c++/3.2.2/bits/streambuf_iterator.h:56: `_CharT' was not declared in this scope /usr/include/c++/3.2.2/bits/streambuf_iterator.h:56: `_Traits' was not declared in this scope /usr/include/c++/3.2.2/bits/streambuf_iterator.h:56: template argument 1 is invalid /usr/include/c++/3.2.2/bits/streambuf_iterator.h:56: template argument 2 is invalid /usr/include/c++/3.2.2/bits/streambuf_iterator.h:57: `_CharT' was not declared in this scope /usr/include/c++/3.2.2/bits/streambuf_iterator.h:57: `_Traits' was not declared in this scope /usr/include/c++/3.2.2/bits/streambuf_iterator.h:57: template argument 1 is invalid /usr/include/c++/3.2.2/bits/streambuf_iterator.h:57: template argument 2 is invalid /usr/include/c++/3.2.2/bits/streambuf_iterator.h:59: parse error before ` private' /usr/include/c++/3.2.2/bits/streambuf_iterator.h:70: parse error before `public ' /usr/include/c++/3.2.2/bits/streambuf_iterator.h: In function `int std::istreambuf_iterator(istream_type&)': /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: `int std::istreambuf_iterator(istream_type&)' redeclared as different kind of symbol /usr/include/c++/3.2.2/iosfwd:95: previous declaration of `template<class _CharT, class _Traits = std::char_traits<_CharT> > class std::istreambuf_iterator' /usr/include/c++/3.2.2/iosfwd:95: previous non-function declaration ` template<class _CharT, class _Traits = std::char_traits<_CharT> > class std::istreambuf_iterator' /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: conflicts with function declaration `int std::istreambuf_iterator(istream_type&)' /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: request for member `rdbuf' in `__s', which is of non-aggregate type `int' /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: `traits_type' undeclared (first use this function) /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: parse error before `::' token /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: only constructors take base initializers /usr/include/c++/3.2.2/bits/streambuf_iterator.h:75: confused by earlier errors, bailing out make: *** [BSC_Dict_JElusDictManager.o] Error 1