I am trying to build the NSAPI module for use on SGI MIPS/IRIX hardware, using
SGI's MIPSpro compilers (we provide binaries in SGI's "inst" format on our
Freeware web site at <URL:http://freeware.sgi.com>).  Since NSAPI is built
using the Zend Thread Safety enabled, some stdiostream code is included.

Configure is correctly determining that HAVE_STDIOSTREAM_H should be
defined (include file <stdiostream.h> is found), and that HAVE_CLASS_ISTDIOSTREAM should be undefined (no class istdiostream exists in the compiler version I am using).   This is correctly being done in the main/php_config.h file.  In the source file zend_language_scanner_cc.cc, there is a section which reads

#if defined(ZTS) && !defined(HAVE_CLASS_ISTDIOSTREAM)
class istdiostream : public istream
{
private:
        stdiobuf _file;
public:
        istdiostream (FILE* __f) : istream(), _file(__f) { init(&_file); }
        stdiobuf* rdbuf()/* const */ { return &_file; }
};
#endif

so that later code in that file will correctly build and work when class istdiostream is used.

In the source file zend_ini_scanner_cc.cc, though, the class istdiostream is
used in/around line 511, without the protection of HAVE_CLASS_ISTDIOSTREAM.
Since this class doesn't exist, the build fails.

I have been able to work around this by adding a section to the #ifdef ZTS
region starting in/around line 408:

#ifdef ZTS
# ifdef HAVE_STDIOSTR_H
#  include <stdiostr.h>
# endif
# ifdef HAVE_STDIOSTREAM_H
#  include <stdiostream.h>
# endif
# ifdef ZEND_WIN32
#  include <strstrea.h>
# else
#  include <strstream.h>
# endif
/* new stuff starts here.... */
# ifndef HAVE_CLASS_ISTDIOSTREAM
class istdiostream : public istream
{
private:
        stdiobuf _file;
public:
        istdiostream (FILE* __f) : istream(), _file(__f) { init(&_file); }
        stdiobuf* rdbuf()/* const */ { return &_file; }
};
# endif
/* ... and ends here */
#endif


After this change, the NSAPI module successfully builds---I haven't had
the chance to test it yet.

regards,
  Steve Crockett
  spc@sgi.com

P.S.  Is there a way to get information on the IRIX build of PHP into your manual?