AC_HEADER_ASSERT
AC_C_BIGENDIAN
+# pkg-config
+PKG_INIT
+if test x"$PKG_CONFIG" = x""; then
+ AC_PATH_PROG(PKG_CONFIG, pkg-config, no)
+fi
+
dnl Dirty hack to disable useless C++/Fortran checks
AC_DEFUN([AC_LIBTOOL_LANG_CXX_CONFIG], [:])
AC_DEFUN([AC_LIBTOOL_LANG_F77_CONFIG], [:])
AC_PROG_LIBTOOL
+# libpng
+PKG_CHECK(libpng, yes, [PNG], [libpng-config], [png.h], png,
+ png_create_write_struct, libpng, [http://www.libpng.org/])
+AC_SUBST(PNG_CFLAGS)
+AC_SUBST(PNG_LIBS)
+
+AM_CONDITIONAL([BUILD_LBXIMG], [test x"$have_libpng" = x"yes"])
+
AC_CONFIG_FILES([
Makefile
src/Makefile