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d258832)
We need to check for word boundaries on either side.
AC_DEFUN([mdw_DECL_ENVIRON],
[AC_CACHE_CHECK([for declaration of \`environ'], mdw_cv_environ,
AC_DEFUN([mdw_DECL_ENVIRON],
[AC_CACHE_CHECK([for declaration of \`environ'], mdw_cv_environ,
+[AC_EGREP_CPP([\<environ\>],
[#include <sys/types.h>
#if HAVE_UNISTD_H
#include <unistd.h>
[#include <sys/types.h>
#if HAVE_UNISTD_H
#include <unistd.h>