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

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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.


git-svn-id: https://llvm.org/svn/llvm-project/llvm/trunk@79990 91177308-0d34-0410-b5e6-96231b3b80d8
This commit is contained in:
Dan Gohman
2009-08-25 15:34:52 +00:00
parent cf48efcf3d
commit baa26395cc
22 changed files with 48 additions and 72 deletions
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12
tools/llvm-link/llvm-link.cpp
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@ -22,6 +22,7 @@
#include "llvm/Support/MemoryBuffer.h"
#include "llvm/Support/PrettyStackTrace.h"
#include "llvm/Support/raw_ostream.h"
#include "llvm/Support/SystemUtils.h"
#include "llvm/System/Signals.h"
#include "llvm/System/Path.h"
#include <memory>
@ -35,7 +36,8 @@ static cl::opt<std::string>
OutputFilename("o", cl::desc("Override output filename"), cl::init("-"),
cl::value_desc("filename"));
static cl::opt<bool> Force("f", cl::desc("Overwrite output files"));
static cl::opt<bool>
Force("f", cl::desc("Enable binary output on terminals"));
static cl::opt<bool>
Verbose("v", cl::desc("Print information about actions taken"));
@ -122,12 +124,9 @@ int main(int argc, char **argv) {
std::string ErrorInfo;
std::auto_ptr<raw_ostream>
Out(new raw_fd_ostream(OutputFilename.c_str(), ErrorInfo,
raw_fd_ostream::F_Binary |
(Force ? raw_fd_ostream::F_Force : 0)));
raw_fd_ostream::F_Binary));
if (!ErrorInfo.empty()) {
errs() << ErrorInfo << '\n';
if (!Force)
errs() << "Use -f command line argument to force output\n";
return 1;
}
@ -142,7 +141,8 @@ int main(int argc, char **argv) {
}
if (Verbose) errs() << "Writing bitcode...\n";
WriteBitcodeToFile(Composite.get(), *Out);
if (Force || !CheckBitcodeOutputToConsole(*Out, true))
WriteBitcodeToFile(Composite.get(), *Out);
return 0;
}