[PECOFF] Create an empty PDB file if debug option is enabled.

There are many build files in the wild that depend on the fact that
link.exe produces a PDB file if /DEBUG option is given. They fail
if the file is not created.

This patch is to make LLD create an empty (dummy) file to satisfy
such build targets. This doesn't do anything other than "touching"
the file.

If a target depends on the content of the PDB file, this workaround
is no help, of course. Otherwise this patch should help build some
stuff.

llvm-svn: 222773

1 files changed, 5 insertions, 0 deletions

diff --git a/lld/lib/Driver/WinLinkDriver.cpp b/lld/lib/Driver/WinLinkDriver.cpp
index a5c125fd24a..dc6cc79a9dc 100644
--- a/lld/lib/Driver/WinLinkDriver.cpp
+++ b/lld/lib/Driver/WinLinkDriver.cpp
@@ -1180,6 +1180,7 @@ bool WinLinkDriver::parse(int argc, const char *argv[],
       // any effect.
       // TODO: This should disable dead stripping. Currently we can't do that
       // because removal of associative sections depends on dead stripping.
+      ctx.setDebug(true);
       break;
 
     case OPT_verbose:
@@ -1267,6 +1268,10 @@ bool WinLinkDriver::parse(int argc, const char *argv[],
       inputFiles.push_back(ctx.allocate(inputArg->getValue()));
       break;
 
+    case OPT_pdb:
+      ctx.setPDBFilePath(inputArg->getValue());
+      break;
+
     case OPT_lldmoduledeffile:
       ctx.setModuleDefinitionFile(inputArg->getValue());
       break;