+AC_CHECK_PROG(HAVE_PKG_CONFIG, pkg-config, yes)
+
+dnl Check for Xft2 usability.
+save_CPPFLAGS="$CPPFLAGS"
+save_LIBS="$LIBS"
+XFT2_LD_FLAGS="-lXft -lfreetype -lfontconfig -lXrender -lX11"
+AC_CHECK_PROG(HAVE_XFT_CONFIG, xft-config, yes)
+if test "x$HAVE_XFT_CONFIG" = "xyes"; then
+ CPPFLAGS="$CPPFLAGS `xft-config --cflags`"
+ XFT2_LD_FLAGS="`xft-config --libs`"
+elif test "x$HAVE_PKG_CONFIG" = "xyes" ; then
+ if pkg-config xft ; then
+ CPPFLAGS="$CPPFLAGS `pkg-config --cflags xft`"
+ XFT2_LD_FLAGS="`pkg-config --libs xft`"
+ fi
+fi
+LIBS="$LIBS $XFT2_LD_FLAGS"
+AC_CHECK_LIB(Xft, XftDrawCreate, HAVE_XFT2=yes, HAVE_XFT2=no)
+AC_CHECK_HEADER(X11/Xft/Xft.h,, HAVE_XFT2=no,
+ [#include <X11/Xft/Xft.h>
+#if XftVersion >= 20000
+#else
+Version too old. Compiling this line should fail.
+#endif])
+if test "x$HAVE_XFT2" = "xyes"; then
+ AC_DEFINE(HAVE_XFT2, 1,
+ [Define to 1 if you have Xft2 library and header file.])
+ M17N_EXT_LIBS="$M17N_EXT_LIBS xft2"
+else
+ XFT2_LD_FLAGS=
+ CPPFLAGS="$save_CPPFLAGS"
+fi
+LIBS="$save_LIBS"
+AC_SUBST(XFT2_LD_FLAGS)
+
+dnl Check for fontconfig usability.
+save_CPPFLAGS="$CPPFLAGS"
+save_LIBS="$LIBS"
+FONTCONFIG_LD_FLAGS=-lfontconfig
+if test "x$HAVE_PKG_CONFIG" = "xyes"; then
+ if pkg-config --exists fontconfig; then
+ CPPFLAGS="$CPPFLAGS `pkg-config --cflags fontconfig`"
+ FONTCONFIG_LD_FLAGS="`pkg-config --libs fontconfig`"
+ LIBS="$LIBS $FONTCONFIG_LD_FLAGS"
+ fi
+fi
+AC_CHECK_LIB(fontconfig, FcInit, HAVE_FONTCONFIG=yes, HAVE_FONTCONFIG=no)
+AC_CHECK_HEADER(fontconfig/fontconfig.h, , HAVE_FONTCONFIG=no)
+if test "x$HAVE_FONTCONFIG" = "xyes"; then
+ AC_DEFINE(HAVE_FONTCONFIG, 1,
+ [Define to 1 if you have fontconfig library and header file.])
+ M17N_EXT_LIBS="$M17N_EXT_LIBS fontconfig"
+else
+ FONTCONFIG_LD_FLAGS=
+ CPPFLAGS="$save_CPPFLAGS"
+fi
+LIBS="$save_LIBS"
+AC_SUBST(FONTCONFIG_LD_FLAGS)
+
+dnl Check for gdlib usability.
+AC_ARG_WITH(gd, [ --with-gd suport graphic device by GD library.])
+
+if test "x$with_gd" != "xno"; then
+ save_LIBS="$LIBS"
+ AC_CHECK_LIB(gd, gdImageCreate, HAVE_GD=yes, HAVE_GD=no)
+ AC_CHECK_HEADER(gd.h, , HAVE_GD=no)
+ if test "x$HAVE_GD" = "xyes"; then
+ AC_CHECK_LIB(gd, gdImageCreateTrueColor, HAVE_GD=2, HAVE_GD=1)
+ AC_DEFINE_UNQUOTED(HAVE_GD, $HAVE_GD,
+ [Define to 1 or 2 if you have gd library and header file.])
+ M17N_EXT_LIBS="$M17N_EXT_LIBS gdlib"
+ GD_LD_FLAGS=-lgd
+ CONFIG_FLAGS="$CONFIG_FLAGS -DHAVE_GD"
+ fi
+ LIBS="$save_LIBS"
+fi
+AC_SUBST(GD_LD_FLAGS)
+
+dnl Check for libxml2 usability.
+save_CPPFLAGS="$CPPFLAGS"
+save_LIBS="$LIBS"
+AC_CHECK_PROG(HAVE_XML2_CONFIG, xml2-config, yes)
+if test "x$HAVE_XML2_CONFIG" = "xyes"; then
+ CPPFLAGS="$CPPFLAGS `xml2-config --cflags`"
+ XML2_LD_FLAGS="`xml2-config --libs`"
+ LIBS="$LIBS $XML2_LD_FLAGS"
+else
+ CPPFLAGS="$CPPFLAGS -I/usr/include/libxml2"
+ XML2_LD_FLAGS="-lxml2 -lz -lpthread -lm"
+fi