[LLD][COFF] Identify /GL object files which are inside libraries

With D26647, we can already identify input object files compiled by cl.exe with
/GL. It seems to be helpful to do the same and print an error message for those
object files compiled with /GL but are inside libraries/archives too.

Reviewed By: rnk, thieta

Differential Revision: https://reviews.llvm.org/D131458

diff --git a/lld/COFF/Driver.cpp b/lld/COFF/Driver.cpp
index 1e080b1..4f7b9e4 100644 (file)
--- a/lld/COFF/Driver.cpp
+++ b/lld/COFF/Driver.cpp
@@ -279,6 +279,10 @@ void LinkerDriver::addArchiveBuffer(MemoryBufferRef mb, StringRef symName,
   } else if (magic == file_magic::bitcode) {
     obj =
         make<BitcodeFile>(ctx, mb, parentName, offsetInArchive, /*lazy=*/false);
+  } else if (magic == file_magic::coff_cl_gl_object) {
+    error(mb.getBufferIdentifier() +
+          ": is not a native COFF file. Recompile without /GL?");
+    return;
   } else {
     error("unknown file type: " + mb.getBufferIdentifier());
     return;

diff --git a/lld/test/COFF/Inputs/cl-gl.lib b/lld/test/COFF/Inputs/cl-gl.lib
new file mode 100755 (executable)
index 0000000..7a6d454
Binary files /dev/null and b/lld/test/COFF/Inputs/cl-gl.lib differ

diff --git a/lld/test/COFF/cl-gl.test b/lld/test/COFF/cl-gl.test
index 3061150..2c1e7bd 100644 (file)
--- a/lld/test/COFF/cl-gl.test
+++ b/lld/test/COFF/cl-gl.test
@@ -1,4 +1,6 @@
 # RUN: not lld-link /out:%t.exe /entry:main %S/Inputs/cl-gl.obj >& %t.log
 # RUN: FileCheck %s < %t.log
+# RUN: not lld-link /out:%t.exe /entry:main %S/Inputs/cl-gl.lib >& %t1.log
+# RUN: FileCheck %s < %t1.log
 
 # CHECK: is not a native COFF file. Recompile without /GL