[cmake] fix attr header detection and linking

src/CMakeLists.txt

@@ -233,7 +233,7 @@ macro(XCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
 endmacro(XCONFIG _package _include_DIR _link_DIR _link_FLAGS _cflags)
 
 if(WITH_XATTR)
-	check_include_files(attr/attributes.h HAVE_ATTR_ATTRIBUTES_H)
+	check_include_files("sys/types.h;attr/attributes.h" HAVE_ATTR_ATTRIBUTES_H)
 	if(HAVE_ATTR_ATTRIBUTES_H)
 		check_library_exists(attr attr_get "" HAVE_XATTR)
 	endif()
@@ -781,6 +781,10 @@ if(WITH_MEMCACHED)
 	target_link_libraries(mod_trigger_b4_dl memcached)
 endif()
 
+if(HAVE_XATTR)
+	target_link_libraries(lighttpd attr)
+endif()
+
 if(CMAKE_C_COMPILER_ID MATCHES "GNU" OR CMAKE_C_COMPILER_ID MATCHES "Clang")
 	set(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=gnu99 -Wall -g -Wshadow -W -pedantic ${WARN_CFLAGS}")
 	set(CMAKE_C_FLAGS_RELEASE        "${CMAKE_C_FLAGS_RELEASE}     -O2")