+dnl This is a slight hack: the tests generated by autoconf 2.52 do not
+dnl work correctly because of some conflict with stdlib.h with g++ 2.96
+dnl We aim to remove this eventually, since we should test as much as
+dnl possible with the compiler which will use the functions (JMarc)
+AC_LANG_C
+AC_CHECK_FUNCS(memmove memset strchr putenv setenv mkfifo mkstemp mktemp)
+# SunOS 4.1.3 does not have strerror and atexit
+AC_REPLACE_FUNCS(strerror atexit)
+AC_LANG_CPLUSPLUS