Add -f[no-]declspec to control recognition of __declspec as a keyword
In versions of clang prior to r238238, __declspec was recognized as a keyword in
all modes. It was then changed to only be enabled when Microsoft or Borland
extensions were enabled (and for CUDA, as a temporary measure). There is a
desire to support __declspec in Playstation code, and possibly other
environments. This commit adds a command-line switch to allow explicit
enabling/disabling of the recognition of __declspec as a keyword. Recognition
is enabled by default in Microsoft, Borland, CUDA, and PS4 environments, and
disabled in all other environments.
Patch by Warren Ristow!
llvm-svn: 249279
diff --git a/clang/lib/Driver/Tools.cpp b/clang/lib/Driver/Tools.cpp
index 7cccf09..1b42ff7 100644
--- a/clang/lib/Driver/Tools.cpp
+++ b/clang/lib/Driver/Tools.cpp
@@ -4610,6 +4610,13 @@
options::OPT_fno_borland_extensions, false))
CmdArgs.push_back("-fborland-extensions");
+ // -fno-declspec is default, except for PS4.
+ if (Args.hasFlag(options::OPT_fdeclspec, options::OPT_fno_declspec,
+ getToolChain().getTriple().isPS4()))
+ CmdArgs.push_back("-fdeclspec");
+ else if (Args.hasArg(options::OPT_fno_declspec))
+ CmdArgs.push_back("-fno-declspec"); // Explicitly disabling __declspec.
+
// -fthreadsafe-static is default, except for MSVC compatibility versions less
// than 19.
if (!Args.hasFlag(options::OPT_fthreadsafe_statics,