Added ikvmc -filealign:<n> option.

ikvmc/Compiler.cs

@@ -342,6 +342,7 @@ class IkvmcCompiler
 		Console.Error.WriteLine("    -sharedclassloader         All targets below this level share a common");
 		Console.Error.WriteLine("                               class loader");
 		Console.Error.WriteLine("    -baseaddress:<address>     Base address for the library to be built");
+		Console.Error.WriteLine("    -filealign:<n>             Specify the alignment used for output file");
 		Console.Error.WriteLine("    -nopeercrossreference      Do not automatically cross reference all peers");
 		Console.Error.WriteLine("    -nostdlib                  Do not reference standard libraries");
 		Console.Error.WriteLine("    -lib:<dir>                 Additional directories to search for references");
@@ -771,6 +772,19 @@ class IkvmcCompiler
 					}
 					options.baseAddress = (long)(baseAddressParsed & 0xFFFFFFFFFFFF0000UL);
 				}
+				else if(s.StartsWith("-filealign:"))
+				{
+					int filealign;
+					if (!Int32.TryParse(s.Substring(11), out filealign)
+						|| filealign < 512
+						|| filealign > 8192
+						|| (filealign & (filealign - 1)) != 0)
+					{
+						Console.Error.WriteLine("Error: invalid file alignment: {0}", s.Substring(11));
+						return 1;
+					}
+					options.fileAlignment = filealign;
+				}
 				else if(s == "-nopeercrossreference")
 				{
 					options.crossReferenceAllPeers = false;

ikvmc/CompilerClassLoader.cs

@@ -170,6 +170,10 @@ namespace IKVM.Internal
 			{
 				moduleBuilder.__ImageBase = options.baseAddress;
 			}
+			if(options.fileAlignment != 0)
+			{
+				moduleBuilder.__FileAlignment = options.fileAlignment;
+			}
 			return moduleBuilder;
 		}
 
@@ -3398,6 +3402,7 @@ namespace IKVM.Internal
 		internal PortableExecutableKinds pekind = PortableExecutableKinds.ILOnly;
 		internal ImageFileMachine imageFileMachine = ImageFileMachine.I386;
 		internal long baseAddress;
+		internal int fileAlignment;
 		internal List<CompilerClassLoader> sharedclassloader; // should *not* be deep copied in Copy(), because we want the list of all compilers that share a class loader
 		internal Dictionary<string, string> suppressWarnings = new Dictionary<string, string>();
 		internal Dictionary<string, string> errorWarnings = new Dictionary<string, string>();	// treat specific warnings as errors