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Use LLVM-style command line (instead of DMD-style)

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Note: For a backward compatible interface, use the new bin/ldmd script. It
      supports all old options while passing on anything it doesn't recognize.

Some changes caused by this:
* -debug and -version are now -d-debug and -d-version due to a conflict with
  standard LLVM options.
* All "flag" options now allow an optional =true/=1/=false/=0 suffix.
* Some "hidden debug switches" starting with "--" were renamed because LLVM
  doesn't care about the number of dashes, so they were conflicting with other
  options (such as -c).
  The new versions start with "-hidden-debug-" instead of "--"
* --help works, but has a non-zero exit code. This breaks some Tango scripts
  which use it to test for compiler existence. See tango.patch.

Some changes not (directly) caused by this;
* (-enable/-disable)-FOO options are now available for pre- and postconditions.
* -march is used instead of -m (like other LLVM programs), but -m is an alias
  for it.
* -defaultlib, -debuglib, -d-debug and -d-version allow comma-separated values.
  The effect should be identical to specifying the same option multiple times.
  I decided against allowing these for some other options because paths might
  contain commas on some systems.
* -fPIC is removed in favor of the standard LLVM option -relocation-model=pic

Bug:
* If -run is specified as the last argument in DFLAGS, no error is generated.
  (Not very serious IMHO)
This commit is contained in:
Frits van Bommel 2009-02-25 17:34:51 +01:00
parent 6a02292c10
commit b3d87205ad
17 changed files with 908 additions and 549 deletions
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23
gen/linker.cpp
View file

@ -1,3 +1,4 @@
#include "gen/linker.h"
#include "gen/llvm.h"
#include "llvm/Linker.h"
#include "llvm/System/Program.h"
@ -11,6 +12,16 @@
#define NO_COUT_LOGGER
#include "gen/logger.h"
#include "gen/cl_options.h"
//////////////////////////////////////////////////////////////////////////////
// Is this useful?
llvm::cl::opt<bool> quiet("quiet",
llvm::cl::desc("Suppress output of link command (unless -v is also passed)"),
llvm::cl::Hidden,
llvm::cl::ZeroOrMore,
llvm::cl::init(true));
//////////////////////////////////////////////////////////////////////////////
@ -173,7 +184,7 @@ int linkExecutable(const char* argv0)
}
// print link command?
if (!global.params.quiet || global.params.verbose)
if (!quiet || global.params.verbose)
{
// Print it
for (int i = 0; i < args.size(); i++)
@ -311,7 +322,7 @@ int linkObjToExecutable(const char* argv0)
args.push_back("-m64");
// print link command?
if (!global.params.quiet || global.params.verbose)
if (!quiet || global.params.verbose)
{
// Print it
for (int i = 0; i < args.size(); i++)
@ -363,10 +374,12 @@ int runExectuable()
// build arguments
std::vector<const char*> args;
for (size_t i = 0; i < global.params.runargs_length; i++)
// args[0] should be the name of the executable
args.push_back(gExePath.toString().c_str());
// Skip first argument to -run; it's a D source file.
for (size_t i = 1, length = opts::runargs.size(); i < length; i++)
{
char *a = global.params.runargs[i];
args.push_back(a);
args.push_back(opts::runargs[i].c_str());
}
// terminate args list
args.push_back(NULL);