Fix OS X build

Change-Id: If0465b73843ad1a489fa66318a689801def3f0f0

CMakeLists.txt

@@ -51,16 +51,14 @@ set(CMAKE_BUILD_TYPE Debug)
 # source_group(Compiler FILES ${FlatBuffers_Compiler_SRCS})
 # source_group(Tests FILES ${FlatBuffers_Tests_SRCS})
 
-if(CMAKE_COMPILER_IS_GNUCXX)
-  add_definitions("-std=c++0x")
-  add_definitions("-Wall")
-endif()
-if("${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
-  add_definitions("-std=c++0x")
+if(APPLE)
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++11 -stdlib=libc++ -Wall")
+elseif(CMAKE_COMPILER_IS_GNUCXX OR "${CMAKE_CXX_COMPILER_ID}" MATCHES "Clang")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++0x -Wall")
 endif()
 
 if(FLATBUFFERS_CODE_COVERAGE)
-  add_definitions("-g -fprofile-arcs -ftest-coverage")
+  set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -g -fprofile-arcs -ftest-coverage")
   set(CMAKE_EXE_LINKER_FLAGS "${CMAKE_EXE_LINKER_FLAGS} -fprofile-arcs -ftest-coverage")
 endif()
 

include/flatbuffers/flatbuffers.h

@@ -299,8 +299,8 @@ class vector_downward {
 
   void clear() { cur_ = buf_ + reserved_; }
 
-  size_t growth_policy(size_t size) {
-    return (size / 2) & ~(sizeof(largest_scalar_t) - 1);
+  size_t growth_policy(size_t bytes) {
+    return (bytes / 2) & ~(sizeof(largest_scalar_t) - 1);
   }
 
   uint8_t *make_space(size_t len) {
@@ -331,9 +331,9 @@ class vector_downward {
 
   // push() & fill() are most frequently called with small byte counts (<= 4),
   // which is why we're using loops rather than calling memcpy/memset.
-  void push(const uint8_t *bytes, size_t size) {
-    auto dest = make_space(size);
-    for (size_t i = 0; i < size; i++) dest[i] = bytes[i];
+  void push(const uint8_t *bytes, size_t num) {
+    auto dest = make_space(num);
+    for (size_t i = 0; i < num; i++) dest[i] = bytes[i];
   }
 
   void fill(size_t zero_pad_bytes) {