diff --git a/CMakeLists.txt b/CMakeLists.txt
index bb4f64e..21d532e 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -16,9 +16,9 @@ if (BUILD_DOCS)
   add_subdirectory(docs)
 endif (BUILD_DOCS)
 
-set(CMAKE_C_FLAGS "-Wall -Wno-deprecated-declarations -Wunused -Wwrite-strings -Wno-strict-aliasing -Wextra -Wshadow -Werror -O3 -g ${MYSQL_CFLAGS}")
+set(CMAKE_C_FLAGS "${EXTRA_CFLAGS} -Wall -Wno-deprecated-declarations -Wunused -Wwrite-strings -Wno-strict-aliasing -Wextra -Wshadow -Werror -O3 -g ${MYSQL_CFLAGS}")
 
-include_directories(${MYDUMPER_SOURCE_DIR} ${MYSQL_INCLUDE_DIR} ${GLIB2_INCLUDE_DIR} ${PCRE_INCLUDE_DIR} ${ZLIB_INCLUDE_DIRS})
+include_directories(${MYDUMPER_SOURCE_DIR} ${MYSQL_INCLUDE_DIR} ${GLIB2_INCLUDE_DIR} ${PCRE_INCLUDE_DIR} ${ZLIB_INCLUDE_DIRS} ${EXTRA_INCLUDE_DIR})
 
 if (NOT CMAKE_INSTALL_PREFIX)
   SET(CMAKE_INSTALL_PREFIX "/usr/local" CACHE STRING "Install path" FORCE)