From 2050b6145113246ea3bb43725ad650c141eff998 Mon Sep 17 00:00:00 2001
From: Rui Ueyama <ruiu@google.com>
Date: Tue, 10 Feb 2015 21:27:31 +0000
Subject: [PATCH] GNU: Add --no-export-dynamic command line option.

llvm-svn: 228749
---
 lld/lib/Driver/GnuLdDriver.cpp                |  5 +++--
 lld/lib/Driver/GnuLdOptions.td                |  2 ++
 lld/unittests/DriverTests/GnuLdDriverTest.cpp | 12 ++++++++++++
 3 files changed, 17 insertions(+), 2 deletions(-)

diff --git a/lld/lib/Driver/GnuLdDriver.cpp b/lld/lib/Driver/GnuLdDriver.cpp
index da1675a61d3f..326e2baaac4a 100644
--- a/lld/lib/Driver/GnuLdDriver.cpp
+++ b/lld/lib/Driver/GnuLdDriver.cpp
@@ -508,8 +508,9 @@ bool GnuLdDriver::parse(int argc, const char *argv[],
   if (parsedArgs->hasArg(OPT_noinhibit_exec))
     ctx->setAllowRemainingUndefines(true);
 
-  if (parsedArgs->hasArg(OPT_export_dynamic))
-    ctx->setExportDynamic(true);
+  if (auto val = getBool(*parsedArgs, OPT_export_dynamic,
+                         OPT_no_export_dynamic))
+    ctx->setExportDynamic(*val);
 
   if (parsedArgs->hasArg(OPT_allow_multiple_definition))
     ctx->setAllowDuplicates(true);
diff --git a/lld/lib/Driver/GnuLdOptions.td b/lld/lib/Driver/GnuLdOptions.td
index 6f22150cc599..18c1a0d5280d 100644
--- a/lld/lib/Driver/GnuLdOptions.td
+++ b/lld/lib/Driver/GnuLdOptions.td
@@ -156,6 +156,8 @@ def export_dynamic : Flag<["-", "--"], "export-dynamic">,
      Group<grp_main>;
 def alias_export_dynamic: Flag<["-"], "E">,
       Alias<export_dynamic>;
+def no_export_dynamic : Flag<["--"], "no-export-dynamic">,
+     Group<grp_main>;
 
 //===----------------------------------------------------------------------===//
 /// Dynamic Library Options
diff --git a/lld/unittests/DriverTests/GnuLdDriverTest.cpp b/lld/unittests/DriverTests/GnuLdDriverTest.cpp
index 36d56258b6f2..a736f5cee2a5 100644
--- a/lld/unittests/DriverTests/GnuLdDriverTest.cpp
+++ b/lld/unittests/DriverTests/GnuLdDriverTest.cpp
@@ -91,6 +91,18 @@ TEST_F(GnuLdParserTest, EntryJoined) {
   EXPECT_EQ("foo", _context->entrySymbolName());
 }
 
+// --export-dynamic
+
+TEST_F(GnuLdParserTest, ExportDynamic) {
+  EXPECT_TRUE(parse("ld", "a.o", "--export-dynamic", nullptr));
+  EXPECT_TRUE(_context->shouldExportDynamic());
+}
+
+TEST_F(GnuLdParserTest, NoExportDynamic) {
+  EXPECT_TRUE(parse("ld", "a.o", "--no-export-dynamic", nullptr));
+  EXPECT_FALSE(_context->shouldExportDynamic());
+}
+
 // --init
 
 TEST_F(GnuLdParserTest, Init) {