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Add support for the 's' operation to llvm-ar.

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If no other operation is specified, 's' becomes an operation instead of an
modifier. The s operation just creates a symbol table. It is the same as
running ranlib.

We assume the archive was created by a sane ar (like llvm-ar or gnu ar) and
if the symbol table is present, then it is current. We use that to optimize
the most common case: a broken build system that thinks it has to run ranlib.

git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@187353 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Rafael Espindola
2013-07-29 12:40:31 +00:00
parent c63dce3c59
commit cf48cf23de
5 changed files with 69 additions and 3 deletions
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8
lib/Object/Archive.cpp
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@@ -385,7 +385,7 @@ Archive::Symbol Archive::Symbol::getNext() const {
}
Archive::symbol_iterator Archive::begin_symbols() const {
if (SymbolTable == end_children())
if (!hasSymbolTable())
return symbol_iterator(Symbol(this, 0, 0));
const char *buf = SymbolTable->getBuffer().begin();
@@ -408,7 +408,7 @@ Archive::symbol_iterator Archive::begin_symbols() const {
}
Archive::symbol_iterator Archive::end_symbols() const {
if (SymbolTable == end_children())
if (!hasSymbolTable())
return symbol_iterator(Symbol(this, 0, 0));
const char *buf = SymbolTable->getBuffer().begin();
@@ -444,3 +444,7 @@ Archive::child_iterator Archive::findSym(StringRef name) const {
}
return end_children();
}
bool Archive::hasSymbolTable() const {
return SymbolTable != end_children();
}