Source release 15.0.0

platforms/x86-64/settings.gypi

@@ -13,21 +13,22 @@
     # These are flags passed to the compiler for all C & C++ files.
     'cflags': [
       '-fPIC',
+      '-fvisibility=hidden',
     ],
 
     # These are flags passed to the compiler for plain C only.
     'cflags_c': [
+      # Compile using the C11 standard with POSIX extensions
+      '-std=c11',
+      '-D_POSIX_C_SOURCE=200809L',
+      # Warn on bad function casts
       '-Wbad-function-cast',
     ],
     # These are flags passed to the compiler for C++ only.
     'cflags_cc': [
-      # Compile using the gnu'98 standard.
-      # C++ standards are not used becuase of use of va_copy in
-      # third_party/protobuf (When using std++03 it defines
-      # __STRICT_ANSI__, which will make clang headers not define
-      # va_copy.). C++11 is not used because some partner
-      # toolchains do not yet support it.
-      '-std=gnu++98',
+      # Compile using the C++11 standard.
+      '-std=c++11',
+      # Disable unused C++ features that are expensive.
       '-fno-rtti',
       '-fno-exceptions',
       # Enable all warnings, and treat warnings as errors.
@@ -56,9 +57,6 @@
       '-Wno-inconsistent-missing-override',
       #'-Wno-maybe-uninitialized',
       '-Wno-unknown-warning-option',
-      # Fallthrough annotations are not supported on C++98, but GCC 7+ still
-      # errors on them by default.
-      '-Wno-implicit-fallthrough',
       '-Wno-dangling-else',  # Allowed by Google C++ Style
     ],
 
@@ -68,8 +66,6 @@
 
     # These are macros set by the compiler.
     'defines': [
-      # suppress use of override keyword.
-      'DISABLE_OVERRIDE_KEYWORD',
       #'EXAMPLE_MACRO_WITH_NO_VALUE',
       #'EXAMPLE_KEY=EXAMPLE_VALUE',
     ],