Make LLVM command-line tools overwrite their output files without -f.

This is conventional command-line tool behavior. -f now just means
"enable binary output on terminals".

Add a -f option to llvm-extract and llvm-link, for consistency.

Remove F_Force from raw_fd_ostream and enable overwriting and
truncating by default. Introduce an F_Excl flag to permit users to
enable a failure when the file already exists. This flag is
currently unused.

Update Makefiles and documentation accordingly.

llvm-svn: 79990

1 files changed, 2 insertions, 5 deletions

diff --git a/llvm/tools/llvm-mc/llvm-mc.cpp b/llvm/tools/llvm-mc/llvm-mc.cpp
index af72fbcf49b..27fb53b9780 100644
--- a/llvm/tools/llvm-mc/llvm-mc.cpp
+++ b/llvm/tools/llvm-mc/llvm-mc.cpp
@@ -53,7 +53,7 @@ FileType("filetype", cl::init(OFT_AssemblyFile),
        clEnumValEnd));
 
 static cl::opt<bool>
-Force("f", cl::desc("Overwrite output files"));
+Force("f", cl::desc("Enable binary output on terminals"));
 
 static cl::list<std::string>
 IncludeDirs("I", cl::desc("Directory of include files"),
@@ -184,12 +184,9 @@ static formatted_raw_ostream *GetOutputStream() {
 
   std::string Err;
   raw_fd_ostream *Out = new raw_fd_ostream(OutputFilename.c_str(), Err,
-                                           raw_fd_ostream::F_Binary |
-                                         (Force ? raw_fd_ostream::F_Force : 0));
+                                           raw_fd_ostream::F_Binary);
   if (!Err.empty()) {
     errs() << Err << '\n';
-    if (!Force)
-      errs() << "Use -f command line argument to force output\n";
     delete Out;
     return 0;
   }