Fix Clang's __DEPRECATED define to be controled by -Wdeprecated. This
matches GCC behavior which libstdc++ uses to limit #warning-based
messages about deprecation.
The machinery involves threading this through a new '-fdeprecated-macro'
flag for CC1. The flag defaults to "on", similarly to -Wdeprecated. We
turn the flag off in the driver when the warning is turned off (modulo
matching some GCC bugs). We record this as a language option, and key
the preprocessor on the option when introducing the define.
A separate flag rather than a '-D' flag allows us to properly represent
the difference between C and C++ builds (only C++ receives the define),
and it allows the specific behavior of following -Wdeprecated without
potentially impacting the set of user-provided macro flags.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@130055 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 0dd2093..daaaad0 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -694,6 +694,8 @@
Res.push_back("-funknown-anytype");
if (Opts.DelayedTemplateParsing)
Res.push_back("-fdelayed-template-parsing");
+ if (!Opts.Deprecated)
+ Res.push_back("-fno-deprecated-macro");
}
static void PreprocessorOptsToArgs(const PreprocessorOptions &Opts,
@@ -1528,6 +1530,11 @@
Opts.FakeAddressSpaceMap = Args.hasArg(OPT_ffake_address_space_map);
Opts.ParseUnknownAnytype = Args.hasArg(OPT_funknown_anytype);
+ // Record whether the __DEPRECATED define was requested.
+ Opts.Deprecated = Args.hasFlag(OPT_fdeprecated_macro,
+ OPT_fno_deprecated_macro,
+ Opts.Deprecated);
+
// FIXME: Eliminate this dependency.
unsigned Opt = getOptimizationLevel(Args, IK, Diags);
Opts.Optimize = Opt != 0;