* Another try

support/ada.m4

@@ -7,7 +7,7 @@ dnl Look for an Ada compiler (ADA environment variable, then gcc, then $CC)
 AC_DEFUN([AM_PROG_ADA],
 [AC_BEFORE([$0], [AM_TRY_ADA])
 AC_REQUIRE([AC_PROG_CC])
-AC_CHECK_PROGS(ADA, gnatgcc adagcc gcc)
+AC_CHECK_PROGS(ADA, gnatmake)
 if test -z "$ADA"; then
   AC_MSG_RESULT([  Tentatively using $CC as an Ada compiler])
   ADA="$CC"