try to fix grep building

grep/grep.spec

@@ -33,7 +33,7 @@ Distribution: OpenPKG [BASE]
 Group:        Text
 License:      GPL
 Version:      2.5
-Release:      20020821
+Release:      20020823
 
 #   list of sources
 Source0:      ftp://ftp.gnu.org/gnu/grep/grep-%{version}.tar.gz
@@ -59,7 +59,7 @@ AutoReqProv:  no
     CFLAGS="%{l_cflags -O}" \
     CPPFLAGS="-I%{l_prefix}/include" \
     LDFLAGS="-L%{l_prefix}/lib" \
-    ./configure \
+    %{l_bash} ./configure \
         --prefix=%{l_prefix} \
         --with-included-gettext
     %{l_make} %{l_mflags -O}