Use $ac_cpp instead of $CPP, like the rest of autoconf does

diff --git a/build/openldap.m4 b/build/openldap.m4
index 1f3cead936f9d9e9682cfd8a21bd7b494b6aaf83..e4ded7a9c5d45947f5c1acfcee677e767f0dfb95 100644 (file)
--- a/build/openldap.m4
+++ b/build/openldap.m4
@@ -319,7 +319,7 @@ AC_DEFUN([OL_BDB_HEADER_VERSION],
 #endif
 __db_version DB_VERSION_MAJOR
 ])
-               ol_cv_bdb_major=`$CPP conftest.$ac_ext | $EGREP __db_version | $SED 's/__db_version //'`
+               ol_cv_bdb_major=`eval "$ac_cpp conftest.$ac_ext" | $EGREP __db_version | $SED 's/__db_version //'`
        fi
 
        if test $ol_cv_bdb_major = 0 ; then
@@ -338,7 +338,7 @@ AC_CACHE_CHECK([for Berkeley DB minor version in db.h], [ol_cv_bdb_minor],[
 #endif
 __db_version DB_VERSION_MINOR
 ])
-               ol_cv_bdb_minor=`$CPP conftest.$ac_ext | $EGREP __db_version | $SED 's/__db_version //'`
+               ol_cv_bdb_minor=`eval "$ac_cpp conftest.$ac_ext" | $EGREP __db_version | $SED 's/__db_version //'`
        fi
 ])
 ])