Export the required symbol from DynamicLibraryTests

Running unittests/Support/DynamicLibrary/DynamicLibraryTests fails
when LLVM is configured with -DLLVM_EXPORT_SYMBOLS_FOR_PLUGINS=ON, because
the test's version script only contains symbols extracted from the static libraries,
that the test links with, but not those from the main object/executable itself.

The patch moves the one symbol, needed by the test, to a static library.

Fixes https://bugs.llvm.org/show_bug.cgi?id=32893

Patch by Momchil Velikov.

Differential Revision: https://reviews.llvm.org/D33789

llvm-svn: 305181

1 files changed, 16 insertions, 0 deletions

diff --git a/llvm/unittests/Support/DynamicLibrary/ExportedFuncs.cxx b/llvm/unittests/Support/DynamicLibrary/ExportedFuncs.cxx
new file mode 100644
index 00000000000..97f190b0b9b
--- /dev/null
+++ b/llvm/unittests/Support/DynamicLibrary/ExportedFuncs.cxx
@@ -0,0 +1,16 @@
+//===- llvm/unittest/Support/DynamicLibrary/DynamicLibraryLib.cpp ---------===//
+//
+//                     The LLVM Compiler Infrastructure
+//
+// This file is distributed under the University of Illinois Open Source
+// License. See LICENSE.TXT for details.
+//
+//===----------------------------------------------------------------------===//
+
+#include "PipSqueak.h"
+
+#ifndef PIPSQUEAK_TESTA_RETURN
+#define PIPSQUEAK_TESTA_RETURN "ProcessCall"
+#endif
+
+extern "C" PIPSQUEAK_EXPORT const char *TestA() { return PIPSQUEAK_TESTA_RETURN; }