diff --git a/cmake/define.inc b/cmake/define.inc
index 4115dd0c4143535130b1bf8a132ee400d828d87d..e825dce024f388e0a376ad0713abca7dd94c5e2a 100755
--- a/cmake/define.inc
+++ b/cmake/define.inc
@@ -57,7 +57,7 @@ IF (TD_LINUX_64)
   ADD_DEFINITIONS(-D_M_X64)
   ADD_DEFINITIONS(-D_TD_LINUX_64)
   MESSAGE(STATUS "linux64 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -fPIC -gdwarf-2 -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -gdwarf-2 -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
   ADD_DEFINITIONS(-DUSE_LIBICONV)
 ENDIF ()
 
@@ -65,7 +65,7 @@ IF (TD_LINUX_32)
   ADD_DEFINITIONS(-D_TD_LINUX_32)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "linux32 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -fPIC -fsigned-char -munaligned-access -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -fsigned-char -munaligned-access -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
 ENDIF ()
 
 IF (TD_ARM_64)
@@ -73,7 +73,7 @@ IF (TD_ARM_64)
   ADD_DEFINITIONS(-D_TD_ARM_)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "arm64 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -fPIC -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
 ENDIF ()
 
 IF (TD_ARM_32)
@@ -81,7 +81,7 @@ IF (TD_ARM_32)
   ADD_DEFINITIONS(-D_TD_ARM_)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "arm32 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -fPIC -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast -Wno-incompatible-pointer-types ")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE -Wno-pointer-to-int-cast -Wno-int-to-pointer-cast -Wno-incompatible-pointer-types ")
 ENDIF ()
 
 IF (TD_MIPS_64)
@@ -89,7 +89,7 @@ IF (TD_MIPS_64)
   ADD_DEFINITIONS(-D_TD_MIPS_64)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "mips64 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -fPIC -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -fsigned-char -fpack-struct=8 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
 ENDIF ()
 
 IF (TD_MIPS_32)
@@ -97,7 +97,7 @@ IF (TD_MIPS_32)
   ADD_DEFINITIONS(-D_TD_MIPS_32)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "mips32 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -fPIC -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -fPIC -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
 ENDIF ()
 
 IF (TD_APLHINE)
@@ -138,7 +138,7 @@ IF (TD_DARWIN_64)
   ADD_DEFINITIONS(-D_REENTRANT -D__USE_POSIX -D_LIBC_REENTRANT)
   ADD_DEFINITIONS(-DUSE_LIBICONV)
   MESSAGE(STATUS "darwin64 is defined")
-  SET(COMMON_FLAGS "-Wall -Werror -Wno-missing-braces -fPIC -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
+  SET(COMMON_FLAGS "-std=gnu99 -Wall -Werror -Wno-missing-braces -fPIC -msse4.2 -D_FILE_OFFSET_BITS=64 -D_LARGE_FILE")
   SET(DEBUG_FLAGS "-O0 -g3 -DDEBUG")
   SET(RELEASE_FLAGS "-Og")
   INCLUDE_DIRECTORIES(${TD_COMMUNITY_DIR}/deps/cJson/inc)