/**
* Return the type of compiler we need to use. Calculated as follows:
*
* <ul>
* <li>If we are on a 32-bit system and building a 32-bit target: return "-arch i386" (mac) or
* "-m32"
* <li>If we are on a 64-bit system and building a 64-bit target: return amd64
* <li>If we are on a 32-bit system and building a 64-bit target: return x86_amd64
* </ul>
*/
private void appendCompilerArchitecture(Commandline commandline) {
Arch osArch = Arch.getOsArch();
Arch outArch = configuration.getOutputArch();
// warn them if they're trying to do a 64-bit cross-compile
if ((osArch == Arch.x86) && (outArch == Arch.amd64))
debug("Building 64-bit target on 32-bit system. Must have multilib installed.");
// generate the appropriate compile command line argument
if (outArch == Arch.x86) {
debug("(system: " + osArch + ") Build target arch: x86");
if (Platform.getOsPlatform().isLinux()) {
commandline.createArgument().setValue("-m32");
} else if (Platform.getOsPlatform().isMac()) {
commandline.createArgument().setValue("-arch");
commandline.createArgument().setValue("i386");
}
} else {
debug("(system: " + osArch + ") Build target arch: amd64");
if (Platform.getOsPlatform().isLinux()) {
commandline.createArgument().setValue("-m64");
} else if (Platform.getOsPlatform().isMac()) {
commandline.createArgument().setValue("-arch");
commandline.createArgument().setValue("x86_64");
}
}
}
/** Generates the linker execution command line including library locations, .o files etc... */
private Commandline generateLinkCommand() {
// Creating a static library in gcc/clang uses ar instead of ld via gcc.
// The command line for ar is different, it has been delegated into its own function
if (configuration.getOutputType() == OutputType.STATIC) return generateStaticLinkCommand();
// create the command line in which to store the information
Commandline commandline = new Commandline();
commandline.setExecutable(executable);
/////// output file name ///////
File outputFile = helper.getPlatformSpecificOutputFile();
commandline.createArgument().setValue("-o");
commandline.createArgument().setFile(outputFile);
////////////////////////////////////
/////// object files to link ///////
////////////////////////////////////
File objectDirectory = configuration.getObjectDirectory();
for (File ofile : helper.getFilesThatNeedLinking(objectDirectory)) {
commandline.createArgument().setFile(ofile);
}
/////// output file type ///////
if (configuration.getOutputType() == OutputType.SHARED) {
if (Platform.getOsPlatform().isMac()) {
commandline.createArgument().setValue("-dynamiclib");
// add the rpath setting if one isn't present
if (configuration.getLinkerArgs().contains("install_name") == false)
commandline.createArgument().setLine("-install_name @rpath/" + outputFile.getName());
} else if (Platform.getOsPlatform().isLinux()) {
commandline.createArgument().setValue("-shared");
}
}
////// platform architecture //////
appendCompilerArchitecture(commandline);
/////// library search paths ///////
for (Library library : configuration.getLibraries()) {
if (library.getPath() != null) {
for (String path : library.getPath().list())
commandline.createArgument().setLine("-L" + Commandline.quoteArgument(path));
}
}
/////// libraries to link with ///////
for (Library library : configuration.getLibraries()) {
if (library.getLibs().isEmpty() == false) {
for (String temp : library.getLibs()) commandline.createArgument().setLine("-l" + temp);
}
}
/////// additional args ///////
String[] commands = Commandline.translateCommandline(configuration.getLinkerArgs());
commandline.addArguments(commands);
// return the finished product!
return commandline;
}