Implement the --exclude-libs option.

The --exclude-libs option is not a popular option, but at least some
programs in Android depend on it, so it's worth to support it.

Differential Revision: https://reviews.llvm.org/D34422

llvm-svn: 305920

1 files changed, 6 insertions, 5 deletions

diff --git a/lld/ELF/SymbolTable.cpp b/lld/ELF/SymbolTable.cpp
index a223aec9862..79251f0285d 100644
--- a/lld/ELF/SymbolTable.cpp
+++ b/lld/ELF/SymbolTable.cpp
@@ -518,18 +518,18 @@ SymbolBody *SymbolTable<ELFT>::findInCurrentDSO(StringRef Name) {
 }
 
 template <class ELFT>
-void SymbolTable<ELFT>::addLazyArchive(ArchiveFile *F,
-                                       const object::Archive::Symbol Sym) {
+Symbol *SymbolTable<ELFT>::addLazyArchive(ArchiveFile *F,
+                                          const object::Archive::Symbol Sym) {
   Symbol *S;
   bool WasInserted;
   StringRef Name = Sym.getName();
   std::tie(S, WasInserted) = insert(Name);
   if (WasInserted) {
     replaceBody<LazyArchive>(S, *F, Sym, SymbolBody::UnknownType);
-    return;
+    return S;
   }
   if (!S->body()->isUndefined())
-    return;
+    return S;
 
   // Weak undefined symbols should not fetch members from archives. If we were
   // to keep old symbol we would not know that an archive member was available
@@ -540,11 +540,12 @@ void SymbolTable<ELFT>::addLazyArchive(ArchiveFile *F,
   // to preserve its type. FIXME: Move the Type field to Symbol.
   if (S->isWeak()) {
     replaceBody<LazyArchive>(S, *F, Sym, S->body()->Type);
-    return;
+    return S;
   }
   std::pair<MemoryBufferRef, uint64_t> MBInfo = F->getMember(&Sym);
   if (!MBInfo.first.getBuffer().empty())
     addFile(createObjectFile(MBInfo.first, F->getName(), MBInfo.second));
+  return S;
 }
 
 template <class ELFT>