Update example/*/CMakeLists.txt as well

example/asynchronous_echo_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/backup_request_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/cancel_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/cascade_echo_c++/CMakeLists.txt

@@ -43,7 +43,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/dynamic_partition_echo_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/echo_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/echo_c++_hulu_pbrpc/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/echo_c++_sofa_pbrpc/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/echo_c++_ubrpc_compack/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/http_c++/CMakeLists.txt

@@ -48,7 +48,16 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/memcache_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/multi_threaded_echo_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/multi_threaded_echo_fns_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/multi_threaded_mcpack_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/nshead_extension_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/nshead_pb_extension_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/parallel_echo_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/partition_echo_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/redis_c++/CMakeLists.txt

@@ -49,7 +49,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")

example/selective_echo_c++/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/session_data_and_thread_local/CMakeLists.txt

@@ -48,7 +48,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -DBRPC_ENABLE_CPU_PROFILER")
 

example/streaming_echo_c++/CMakeLists.txt

@@ -44,7 +44,15 @@ if(${GFLAGS_NS} STREQUAL "GFLAGS_NAMESPACE")
         OUTPUT_VARIABLE GFLAGS_NS
     )
 endif()
-set(CMAKE_CPP_FLAGS "-DGFLAGS_NS=${GFLAGS_NS}")
+if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+    include(CheckFunctionExists)
+    CHECK_FUNCTION_EXISTS(clock_gettime HAVE_CLOCK_GETTIME)
+    if(NOT HAVE_CLOCK_GETTIME)
+        set(DEFINE_CLOCK_GETTIME "-DNO_CLOCK_GETTIME_IN_MAC")
+    endif()
+endif()
+
+set(CMAKE_CPP_FLAGS "${DEFINE_CLOCK_GETTIME} -DGFLAGS_NS=${GFLAGS_NS}")
 set(CMAKE_CXX_FLAGS "${CMAKE_CPP_FLAGS} -DNDEBUG -O2 -D__const__= -pipe -W -Wall -Wno-unused-parameter -fPIC -fno-omit-frame-pointer")
 
 if(CMAKE_VERSION VERSION_LESS "3.1.3")