-save_CPPFLAGS="$CPPFLAGS"
-save_LIBS="$LIBS"
-AC_CHECK_PROG(HAVE_OTFLIB_CONFIG, libotf-config, yes)
-if test "x$HAVE_OTFLIB_CONFIG" = "xyes"; then
- CPPFLAGS="$CPPFLAGS `libotf-config --cflags`"
- OTF_LD_FLAGS="`libotf-config --libs` "
- LIBS="$LIBS $OTF_LD_FLAGS"
-else
- OTF_LD_FLAGS=-lotf
-fi
-AC_CHECK_LIB(otf, OTF_open, HAVE_OTF=yes, HAVE_OTF=no)
-AC_CHECK_HEADER(otf.h,, HAVE_OTF=no)
-CPPFLAGS="$save_CPPFLAGS"
-if test "x$HAVE_OTF" = "xyes"; then
- AC_DEFINE(HAVE_OTF, 1,
- [Define to 1 if you have OTF library and header file.])
- M17N_EXT_LIBS="$M17N_EXT_LIBS libotf"
-else
- CPPFLAGS="$save_CPPFLAGS"
- OTF_LD_FLAGS=
+AC_ARG_WITH(libotf,
+ AC_HELP_STRING([--with-libotf],
+ [with OpenType font suport (default is YES)]))
+
+if test "x$with_libotf" != "xno"; then
+ save_CPPFLAGS="$CPPFLAGS"
+ save_LIBS="$LIBS"
+ AC_CHECK_PROG(HAVE_OTFLIB_CONFIG, libotf-config, yes)
+ if test "x$HAVE_OTFLIB_CONFIG" = "xyes"; then
+ CPPFLAGS="$CPPFLAGS `libotf-config --cflags`"
+ OTF_LD_FLAGS="`libotf-config --libs`"
+ LIBS="$LIBS $OTF_LD_FLAGS"
+ else
+ OTF_LD_FLAGS=-lotf
+ fi
+ ## We check the availability of OTF_check_features
+ ## because we need libotf-0.9.4 or the later.
+ AC_CHECK_LIB(otf, OTF_check_features, HAVE_OTF=yes, HAVE_OTF=no)
+ AC_CHECK_HEADER(otf.h,, HAVE_OTF=no)
+ if test "x$HAVE_OTF" = "xyes"; then
+ AC_DEFINE(HAVE_OTF, 1,
+ [Define to 1 if you have OTF library and header file.])
+ M17N_EXT_LIBS="$M17N_EXT_LIBS libotf"
+ else
+ CPPFLAGS="$save_CPPFLAGS"
+ OTF_LD_FLAGS=
+ fi
+ LIBS="$save_LIBS"