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

--- a/gen/runtime.cpp	Thu Feb 19 13:51:44 2009 +0100
+++ b/gen/runtime.cpp	Wed Feb 25 17:34:51 2009 +0100
@@ -2,6 +2,7 @@
 #include "llvm/Module.h"
 #include "llvm/Bitcode/ReaderWriter.h"
 #include "llvm/Support/MemoryBuffer.h"
+#include "llvm/Support/CommandLine.h"
 
 #include "root.h"
 #include "mars.h"
@@ -15,6 +16,14 @@
 #include "gen/tollvm.h"
 #include "gen/irstate.h"
 
+//////////////////////////////////////////////////////////////////////////////////////////////////
+
+static llvm::cl::opt<bool> noruntime("noruntime",
+    llvm::cl::desc("Do not allow code that generates implicit runtime calls"),
+    llvm::cl::ZeroOrMore);
+
+//////////////////////////////////////////////////////////////////////////////////////////////////
+
 static llvm::Module* M = NULL;
 static bool runtime_failed = false;
 
@@ -44,7 +53,7 @@
 
 llvm::Function* LLVM_D_GetRuntimeFunction(llvm::Module* target, const char* name)
 {
-    if (global.params.noruntime) {
+    if (noruntime) {
         error("No implicit runtime calls allowed with -noruntime option enabled");
         fatal();
     }
@@ -80,7 +89,7 @@
         return gv;
     }
 
-    if (global.params.noruntime) {
+    if (noruntime) {
         error("No implicit runtime calls allowed with -noruntime option enabled");
         fatal();
     }