Index: boost/test/utils/runtime/env/environment.ipp
===================================================================
RCS file: /cvsroot/boost/boost/boost/test/utils/runtime/env/environment.ipp,v
retrieving revision 1.1
diff -u -b -r1.1 environment.ipp
--- boost/test/utils/runtime/env/environment.ipp	12 Apr 2005 06:42:43 -0000	1.1
+++ boost/test/utils/runtime/env/environment.ipp	26 Apr 2005 04:48:41 -0000
@@ -30,12 +30,6 @@
 #include <list>
 #include <cstdlib>
 
-# define BOOST_NO_STDC_NAMESPACE
-
-# ifdef BOOST_NO_STDC_NAMESPACE
-namespace std { using ::BOOST_RT_PARAM_GETENV; using ::BOOST_RT_PARAM_PUTENV; }
-# endif
-
 namespace boost {
 
 namespace BOOST_RT_PARAM_NAMESPACE {
@@ -93,11 +87,18 @@
 BOOST_RT_PARAM_INLINE void
 sys_write_var( cstring var_name, format_stream& var_value )
 {
+#ifdef BOOST_WINDOWS
     format_stream fs;
 
     fs << var_name << '=' << var_value.str();
 
-    std::BOOST_RT_PARAM_PUTENV( fs.str().c_str() );
+    putenv ( fs.str().c_str() );
+#else
+
+   // This is from BSD 4.3 and probably POSIX.
+   setenv (var_name, var_value.c_str ());
+
+#endif
 }
 
 //____________________________________________________________________________//