Pass -shared to the linker.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@100260 91177308-0d34-0410-b5e6-96231b3b80d8
diff --git a/tools/llvmc/plugins/Base/Base.td.in b/tools/llvmc/plugins/Base/Base.td.in
index 3ad07c0..3c4f4e95 100644
--- a/tools/llvmc/plugins/Base/Base.td.in
+++ b/tools/llvmc/plugins/Base/Base.td.in
@@ -46,6 +46,8 @@
     (help "Relocation model: PIC"), (hidden)),
  (switch_option "mdynamic-no-pic",
     (help "Relocation model: dynamic-no-pic"), (hidden)),
+ (switch_option "shared",
+     (help "Create a DLL instead of the regular executable")),
  (parameter_option "linker",
     (help "Choose linker (possible values: gcc, g++)")),
  (parameter_option "mtune",
@@ -281,6 +283,7 @@
           (not_empty "l"), (forward "l"),
           (not_empty "Xlinker"), (forward "Xlinker"),
           (not_empty "Wl,"), (forward "Wl,"),
+          (switch_on "shared"), (forward "shared"),
           (switch_on "dynamiclib"), (forward "dynamiclib"),
           (switch_on "prebind"), (forward "prebind"),
           (switch_on "dead_strip"), (forward "dead_strip"),