Add -isystem-prefix and -ino-system-prefix arguments, which can be used to
override whether headers are system headers by checking for prefixes of the
header name specified in the #include directive.
This allows warnings to be disabled for third-party code which is found in
specific subdirectories of include paths.
git-svn-id: https://llvm.org/svn/llvm-project/cfe/trunk@158418 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/lib/Frontend/CompilerInvocation.cpp b/lib/Frontend/CompilerInvocation.cpp
index 99c338c..81d78c0 100644
--- a/lib/Frontend/CompilerInvocation.cpp
+++ b/lib/Frontend/CompilerInvocation.cpp
@@ -624,6 +624,16 @@
Res.push_back(E.Path);
}
+ /// User-specified system header prefixes.
+ for (unsigned i = 0, e = Opts.SystemHeaderPrefixes.size(); i != e; ++i) {
+ if (Opts.SystemHeaderPrefixes[i].IsSystemHeader)
+ Res.push_back("-isystem-prefix");
+ else
+ Res.push_back("-ino-system-prefix");
+
+ Res.push_back(Opts.SystemHeaderPrefixes[i].Prefix);
+ }
+
if (!Opts.ResourceDir.empty())
Res.push_back("-resource-dir", Opts.ResourceDir);
if (!Opts.ModuleCachePath.empty())
@@ -1688,6 +1698,14 @@
Opts.AddPath((*I)->getValue(Args), frontend::System,
false, false, /*IgnoreSysRoot=*/true, /*IsInternal=*/true,
(*I)->getOption().matches(OPT_internal_externc_isystem));
+
+ // Add the path prefixes which are implicitly treated as being system headers.
+ for (arg_iterator I = Args.filtered_begin(OPT_isystem_prefix,
+ OPT_ino_system_prefix),
+ E = Args.filtered_end();
+ I != E; ++I)
+ Opts.AddSystemHeaderPrefix((*I)->getValue(Args),
+ (*I)->getOption().matches(OPT_isystem_prefix));
}
void CompilerInvocation::setLangDefaults(LangOptions &Opts, InputKind IK,