+-FILES_BUILD="mkdep.awk scan_makefile_in.awk shtool libtool.m4"
++FILES_BUILD="mkdep.awk scan_makefile_in.awk shtool"
++if [ -f "$aclocaldir/ltsugar.m4" ]; then
++ LIBTOOL_FILES="libtool.m4 ltoptions.m4 ltsugar.m4 ltversion.m4 lt~obsolete.m4"
++else
++ LIBTOOL_FILES="libtool.m4"
++fi
+ FILES="acinclude.m4 Makefile.global config.sub config.guess ltmain.sh run-tests*.php"
+ CLEAN_FILES="$FILES *.o *.lo *.la .deps .libs/ build/ include/ modules/ install-sh \
+ mkinstalldirs missing config.nice config.sub config.guess configure configure.in \
+@@ -145,8 +151,9 @@ phpize_copy_files()
+ test -d build || mkdir build
+
+ (cd "$phpdir" && cp $FILES_BUILD "$builddir"/build)
++ (cd "$aclocaldir" && cp $LIBTOOL_FILES "$builddir"/build)
+ (cd "$phpdir" && cp $FILES "$builddir")
+- (cd "$builddir" && cat acinclude.m4 ./build/libtool.m4 > aclocal.m4)
++ (cd "$builddir/build" && cat ../acinclude.m4 $LIBTOOL_FILES > ../aclocal.m4)
+ }
+
+ phpize_replace_prefix()