+dnl HP-UX aCC: see http://docs.hp.com/en/6162/preprocess.htm#macropredef
+AC_DEFUN([AC_BAKEFILE_PROG_HPCC],
+[
+ _AC_BAKEFILE_LANG_COMPILER(HP, C, __HP_cc, HPCC=yes)
+])
+
+AC_DEFUN([AC_BAKEFILE_PROG_HPCXX],
+[
+ _AC_BAKEFILE_LANG_COMPILER(HP, C++, __HP_aCC, HPCXX=yes)
+])
+
+dnl Tru64 cc and cxx
+AC_DEFUN([AC_BAKEFILE_PROG_COMPAQCC],
+[
+ _AC_BAKEFILE_LANG_COMPILER(Compaq, C, __DECC, COMPAQCC=yes)
+])
+
+AC_DEFUN([AC_BAKEFILE_PROG_COMPAQCXX],
+[
+ _AC_BAKEFILE_LANG_COMPILER(Compaq, C++, __DECCXX, COMPAQCXX=yes)
+])
+