+# --with-libyajl {{{
+with_libyajl_cppflags=""
+with_libyajl_ldflags=""
+AC_ARG_WITH(libyajl, [AS_HELP_STRING([--with-libyajl@<:@=PREFIX@:>@], [Path to libyajl.])],
+[
+ if test "x$withval" != "xno" && test "x$withval" != "xyes"
+ then
+ with_libyajl_cppflags="-I$withval/include"
+ with_libyajl_ldflags="-L$withval/lib"
+ with_libyajl="yes"
+ else
+ with_libyajl="$withval"
+ fi
+],
+[
+ with_libyajl="yes"
+])
+if test "x$with_libyajl" = "xyes"
+then
+ SAVE_CPPFLAGS="$CPPFLAGS"
+ CPPFLAGS="$CPPFLAGS $with_libyajl_cppflags"
+
+ AC_CHECK_HEADERS(yajl/yajl_parse.h, [with_libyajl="yes"], [with_libyajl="no (yajl/yajl_parse.h not found)"])
+
+ CPPFLAGS="$SAVE_CPPFLAGS"
+fi
+if test "x$with_libyajl" = "xyes"
+then
+ SAVE_CPPFLAGS="$CPPFLAGS"
+ SAVE_LDFLAGS="$LDFLAGS"
+ CPPFLAGS="$CPPFLAGS $with_libyajl_cppflags"
+ LDFLAGS="$LDFLAGS $with_libyajl_ldflags"
+
+ AC_CHECK_LIB(yajl, yajl_alloc, [with_libyajl="yes"], [with_libyajl="no (Symbol 'yajl_alloc' not found)"])
+
+ CPPFLAGS="$SAVE_CPPFLAGS"
+ LDFLAGS="$SAVE_LDFLAGS"
+fi
+if test "x$with_libyajl" = "xyes"
+then
+ BUILD_WITH_LIBYAJL_CPPFLAGS="$with_libyajl_cppflags"
+ BUILD_WITH_LIBYAJL_LDFLAGS="$with_libyajl_ldflags"
+ BUILD_WITH_LIBYAJL_LIBS="-lyajl"
+ AC_SUBST(BUILD_WITH_LIBYAJL_CPPFLAGS)
+ AC_SUBST(BUILD_WITH_LIBYAJL_LDFLAGS)
+ AC_SUBST(BUILD_WITH_LIBYAJL_LIBS)
+ AC_DEFINE(HAVE_LIBYAJL, 1, [Define if libyajl is present and usable.])
+fi
+AM_CONDITIONAL(BUILD_WITH_LIBYAJL, test "x$with_libyajl" = "xyes")
+# }}}
+