diff options
Diffstat (limited to 'lib/Driver/Tools.cpp')
| -rw-r--r-- | lib/Driver/Tools.cpp | 24 |
1 files changed, 17 insertions, 7 deletions
diff --git a/lib/Driver/Tools.cpp b/lib/Driver/Tools.cpp index 0701c5fa7b..83ec814bc0 100644 --- a/lib/Driver/Tools.cpp +++ b/lib/Driver/Tools.cpp @@ -212,11 +212,15 @@ void Clang::AddPreprocessingOptions(const Driver &D, // wonky, but we include looking for .gch so we can support seamless // replacement into a build system already set up to be generating // .gch files. + bool RenderedImplicitInclude = false; for (arg_iterator it = Args.filtered_begin(options::OPT_clang_i_Group), ie = Args.filtered_end(); it != ie; ++it) { const Arg *A = it; if (A->getOption().matches(options::OPT_include)) { + bool IsFirstImplicitInclude = !RenderedImplicitInclude; + RenderedImplicitInclude = true; + // Use PCH if the user requested it. bool UsePCH = D.CCCUsePCH; @@ -250,13 +254,19 @@ void Clang::AddPreprocessingOptions(const Driver &D, } if (FoundPCH || FoundPTH) { - A->claim(); - if (UsePCH) - CmdArgs.push_back("-include-pch"); - else - CmdArgs.push_back("-include-pth"); - CmdArgs.push_back(Args.MakeArgString(P.str())); - continue; + if (IsFirstImplicitInclude) { + A->claim(); + if (UsePCH) + CmdArgs.push_back("-include-pch"); + else + CmdArgs.push_back("-include-pth"); + CmdArgs.push_back(Args.MakeArgString(P.str())); + continue; + } else { + // Ignore the PCH if not first on command line and emit warning. + D.Diag(clang::diag::warn_drv_pch_not_first_include) + << P.str() << A->getAsString(Args); + } } } |