diff -r 60d8c38e1900 -r 17d7a4451299 bison/bison.spec
--- a/bison/bison.spec	Tue Aug 28 19:02:35 2012 +0200
+++ b/bison/bison.spec	Tue Aug 28 19:02:40 2012 +0200
@@ -99,7 +99,7 @@
           --mandir=%{l_prefix}/man \
           --infodir=%{l_prefix}/info \
           --disable-nls
-      %{l_make} -f Makefile %{l_mflags}
+      %{l_make} -f Makefile %{l_mflags -O}
     ) || exit $?
 %if "%{with_old}" == "yes"
     ( cd bison-%{V_old}
@@ -111,14 +111,14 @@
           --mandir=%{l_prefix}/man \
           --infodir=%{l_prefix}/info \
           --disable-nls
-      %{l_make} -f Makefile %{l_mflags}
+      %{l_make} -f Makefile %{l_mflags -O}
     ) || exit $?
 %endif
 
 %install
 %if "%{with_old}" == "yes"
     ( cd bison-%{V_old}
-      %{l_make} -f Makefile %{l_mflags} install AM_MAKEFLAGS="DESTDIR=$RPM_BUILD_ROOT"
+      %{l_make} -f Makefile %{l_mflags} install DESTDIR="$RPM_BUILD_ROOT"
       mv $RPM_BUILD_ROOT%{l_prefix}/bin/bison \
          $RPM_BUILD_ROOT%{l_prefix}/bin/bison-old
       mv $RPM_BUILD_ROOT%{l_prefix}/man/man1/bison.1 \
@@ -126,7 +126,7 @@
     ) || exit $?
 %endif
     ( cd bison-%{V_new}
-      %{l_make} -f Makefile %{l_mflags} install AM_MAKEFLAGS="DESTDIR=$RPM_BUILD_ROOT"
+      %{l_make} -f Makefile %{l_mflags} install DESTDIR="$RPM_BUILD_ROOT"
     ) || exit $?
     rm -rf $RPM_BUILD_ROOT%{l_prefix}/share/locale
     rm -f $RPM_BUILD_ROOT%{l_prefix}/info/dir