mirror of
https://github.com/xomboverlord/ldc.git
synced 2026-07-21 14:45:21 +02:00
Also factored out argument parsing to separate function.
The code is still messy, but we have to start somewhere...
This commit is contained in:
David Nadlinger
535
driver/main.cpp
535
driver/main.cpp
@@ -141,6 +141,266 @@ static void initFromString(char*& dest, const cl::opt<std::string>& src) {
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}
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}
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int main(int argc, char **argv);
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/// Parses switches from the command line, any response files and the global
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/// config file and sets up global.params accordingly.
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///
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/// Returns a list of source file names.
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static void parseCommandLine(int argc, char **argv, Strings &sourceFiles, bool &helpOnly) {
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#if _WIN32
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char buf[MAX_PATH];
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GetModuleFileName(NULL, buf, MAX_PATH);
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const char* argv0 = &buf;
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// FIXME: We cannot set params.argv0 here, as we would escape a stack
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// reference, but it is unused anyway.
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global.params.argv0 = NULL;
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#else
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const char* argv0 = global.params.argv0 = argv[0];
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#endif
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// Set some default values.
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global.params.useSwitchError = 1;
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global.params.useArrayBounds = 2;
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global.params.linkswitches = new Strings();
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global.params.libfiles = new Strings();
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global.params.objfiles = new Strings();
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global.params.ddocfiles = new Strings();
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global.params.moduleDeps = NULL;
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global.params.moduleDepsFile = NULL;
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// build complete fixed up list of command line arguments
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std::vector<const char*> final_args;
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final_args.reserve(argc);
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// insert command line args until -run is reached
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int run_argnum = 1;
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while (run_argnum < argc && strncmp(argv[run_argnum], "-run", 4) != 0)
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++run_argnum;
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final_args.insert(final_args.end(), &argv[0], &argv[run_argnum]);
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// read the configuration file
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ConfigFile cfg_file;
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// just ignore errors for now, they are still printed
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cfg_file.read(argv0, (void*)main, "ldc2.conf");
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// insert config file additions to the argument list
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final_args.insert(final_args.end(), cfg_file.switches_begin(), cfg_file.switches_end());
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// insert -run and everything beyond
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final_args.insert(final_args.end(), &argv[run_argnum], &argv[argc]);
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// Handle fixed-up arguments!
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cl::SetVersionPrinter(&printVersion);
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cl::ParseCommandLineOptions(final_args.size(), const_cast<char**>(&final_args[0]),
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"LDC - the LLVM D compiler\n"
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#if LDC_LLVM_VER < 302
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, true
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#endif
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);
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// Print config file path if -v was passed
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if (global.params.verbose) {
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const std::string& path = cfg_file.path();
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if (!path.empty())
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printf("config %s\n", path.c_str());
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}
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// Negated options
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global.params.link = !compileOnly;
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global.params.obj = !dontWriteObj;
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global.params.useInlineAsm = !noAsm;
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// String options: std::string --> char*
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initFromString(global.params.objname, objectFile);
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initFromString(global.params.objdir, objectDir);
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initFromString(global.params.docdir, ddocDir);
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initFromString(global.params.docname, ddocFile);
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global.params.doDocComments |=
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global.params.docdir || global.params.docname;
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initFromString(global.params.xfilename, jsonFile);
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if (global.params.xfilename)
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global.params.doXGeneration = true;
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initFromString(global.params.hdrdir, hdrDir);
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initFromString(global.params.hdrname, hdrFile);
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global.params.doHdrGeneration |=
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global.params.hdrdir || global.params.hdrname;
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initFromString(global.params.moduleDepsFile, moduleDepsFile);
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if (global.params.moduleDepsFile != NULL)
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{
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global.params.moduleDeps = new OutBuffer;
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}
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processVersions(debugArgs, "debug",
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DebugCondition::setGlobalLevel,
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DebugCondition::addGlobalIdent);
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processVersions(versions, "version",
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VersionCondition::setGlobalLevel,
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VersionCondition::addGlobalIdent);
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global.params.output_o =
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(opts::output_o == cl::BOU_UNSET
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&& !(opts::output_bc || opts::output_ll || opts::output_s))
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? OUTPUTFLAGdefault
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: opts::output_o == cl::BOU_TRUE
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? OUTPUTFLAGset
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: OUTPUTFLAGno;
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global.params.output_bc = opts::output_bc ? OUTPUTFLAGset : OUTPUTFLAGno;
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global.params.output_ll = opts::output_ll ? OUTPUTFLAGset : OUTPUTFLAGno;
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global.params.output_s = opts::output_s ? OUTPUTFLAGset : OUTPUTFLAGno;
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templateLinkage =
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opts::linkonceTemplates ? LLGlobalValue::LinkOnceODRLinkage
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: LLGlobalValue::WeakODRLinkage;
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if (global.params.run || !runargs.empty()) {
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// FIXME: how to properly detect the presence of a PositionalEatsArgs
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// option without parameters? We want to emit an error in that case...
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// You'd think getNumOccurrences would do it, but it just returns the
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// number of parameters)
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// NOTE: Hacked around it by detecting -run in getenv_setargv(), where
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// we're looking for it anyway, and pre-setting the flag...
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global.params.run = true;
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if (!runargs.empty()) {
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char const * name = runargs[0].c_str();
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char const * ext = FileName::ext(name);
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if (ext && FileName::equals(ext, "d") == 0 &&
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FileName::equals(ext, "di") == 0) {
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error("-run must be followed by a source file, not '%s'", name);
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}
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sourceFiles.push(mem.strdup(name));
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runargs.erase(runargs.begin());
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} else {
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global.params.run = false;
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error("Expected at least one argument to '-run'\n");
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}
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}
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sourceFiles.reserve(fileList.size());
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typedef std::vector<std::string>::iterator It;
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for(It I = fileList.begin(), E = fileList.end(); I != E; ++I)
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if (!I->empty())
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sourceFiles.push(mem.strdup(I->c_str()));
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Array* libs;
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if (global.params.symdebug)
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{
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libs = global.params.debuglibnames;
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}
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else
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libs = global.params.defaultlibnames;
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if (!noDefaultLib)
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{
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if (libs)
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{
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for (unsigned i = 0; i < libs->dim; i++)
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{
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char* lib = static_cast<char *>(libs->data[i]);
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char *arg = static_cast<char *>(mem.malloc(strlen(lib) + 3));
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strcpy(arg, "-l");
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strcpy(arg+2, lib);
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global.params.linkswitches->push(arg);
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}
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}
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else
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{
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global.params.linkswitches->push(mem.strdup("-ldruntime-ldc"));
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}
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}
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if (global.params.useUnitTests)
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global.params.useAssert = 1;
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// Bounds checking is a bit peculiar: -enable/disable-boundscheck is an
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// absolute decision. Only if no explicit option is specified, -release
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// downgrades useArrayBounds 2 to 1 (only for safe functions).
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if (opts::boundsChecks == cl::BOU_UNSET)
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global.params.useArrayBounds = opts::nonSafeBoundsChecks ? 2 : 1;
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else
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global.params.useArrayBounds = (opts::boundsChecks == cl::BOU_TRUE) ? 2 : 0;
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// LDC output determination
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// if we don't link, autodetect target from extension
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if(!global.params.link && !createStaticLib && global.params.objname) {
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const char *ext = FileName::ext(global.params.objname);
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bool autofound = false;
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if (!ext) {
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// keep things as they are
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} else if (strcmp(ext, global.ll_ext) == 0) {
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global.params.output_ll = OUTPUTFLAGset;
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autofound = true;
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} else if (strcmp(ext, global.bc_ext) == 0) {
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global.params.output_bc = OUTPUTFLAGset;
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autofound = true;
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} else if (strcmp(ext, global.s_ext) == 0) {
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global.params.output_s = OUTPUTFLAGset;
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autofound = true;
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} else if (strcmp(ext, global.obj_ext) == 0 || strcmp(ext, global.obj_ext_alt) == 0) {
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global.params.output_o = OUTPUTFLAGset;
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autofound = true;
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} else {
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// append dot, so forceExt won't change existing name even if it contains dots
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size_t len = strlen(global.params.objname);
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char* s = static_cast<char *>(mem.malloc(len + 1 + 1));
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memcpy(s, global.params.objname, len);
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s[len] = '.';
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s[len+1] = 0;
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global.params.objname = s;
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}
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if(autofound && global.params.output_o == OUTPUTFLAGdefault)
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global.params.output_o = OUTPUTFLAGno;
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}
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// only link if possible
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if (!global.params.obj || !global.params.output_o || createStaticLib)
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global.params.link = 0;
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if (createStaticLib && createSharedLib)
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error("-lib and -shared switches cannot be used together");
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if (createSharedLib && mRelocModel == llvm::Reloc::Default)
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mRelocModel = llvm::Reloc::PIC_;
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if (global.params.link && !createSharedLib)
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{
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global.params.exefile = global.params.objname;
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if (sourceFiles.dim > 1)
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global.params.objname = NULL;
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}
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else if (global.params.run)
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{
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error("flags conflict with -run");
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fatal();
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}
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else if (global.params.objname && sourceFiles.dim > 1) {
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if (createStaticLib || createSharedLib)
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{
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singleObj = true;
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}
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if (!singleObj)
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{
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error("multiple source files, but only one .obj name");
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fatal();
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}
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}
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if (soname.getNumOccurrences() > 0 && !createSharedLib) {
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error("-soname can be used only when building a shared library");
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fatal();
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}
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}
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/// Registers the predefined versions specific to the current target triple
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/// and other target specific options with VersionCondition.
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static void registerPredefinedTargetVersions() {
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@@ -323,7 +583,7 @@ static void registerPredefinedVersions() {
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#undef STR
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}
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int main(int argc, char** argv)
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int main(int argc, char **argv)
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{
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mem.init(); // initialize storage allocator
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mem.setStackBottom(&argv);
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@@ -331,8 +591,7 @@ int main(int argc, char** argv)
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// stack trace on signals
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llvm::sys::PrintStackTraceOnErrorSignal();
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Strings files;
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const char *p, *ext;
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const char *p;
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Module *m;
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int status = EXIT_SUCCESS;
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@@ -341,282 +600,26 @@ int main(int argc, char** argv)
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global.ldc_version = ldc::ldc_version;
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global.llvm_version = ldc::llvm_version;
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// Set some default values
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#if _WIN32
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char buf[MAX_PATH];
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GetModuleFileName(NULL, buf, MAX_PATH);
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global.params.argv0 = buf;
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#else
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global.params.argv0 = argv[0];
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#endif
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global.params.useSwitchError = 1;
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global.params.useArrayBounds = 2;
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global.params.linkswitches = new Strings();
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global.params.libfiles = new Strings();
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global.params.objfiles = new Strings();
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global.params.ddocfiles = new Strings();
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global.params.moduleDeps = NULL;
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global.params.moduleDepsFile = NULL;
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// build complete fixed up list of command line arguments
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std::vector<const char*> final_args;
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final_args.reserve(argc);
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// insert command line args until -run is reached
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int run_argnum = 1;
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while (run_argnum < argc && strncmp(argv[run_argnum], "-run", 4) != 0)
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++run_argnum;
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final_args.insert(final_args.end(), &argv[0], &argv[run_argnum]);
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// read the configuration file
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ConfigFile cfg_file;
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// just ignore errors for now, they are still printed
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cfg_file.read(global.params.argv0, (void*)main, "ldc2.conf");
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// insert config file additions to the argument list
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final_args.insert(final_args.end(), cfg_file.switches_begin(), cfg_file.switches_end());
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// insert -run and everything beyond
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final_args.insert(final_args.end(), &argv[run_argnum], &argv[argc]);
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#if 0
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for (size_t i = 0; i < final_args.size(); ++i)
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{
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printf("final_args[%zu] = %s\n", i, final_args[i]);
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}
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#endif
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// Initialize LLVM.
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// Initialize targets first, so that --version shows registered targets.
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// Initialize LLVM before parsing the command line so that --version shows
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// registered targets.
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llvm::InitializeAllTargetInfos();
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llvm::InitializeAllTargets();
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llvm::InitializeAllTargetMCs();
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llvm::InitializeAllAsmPrinters();
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llvm::InitializeAllAsmParsers();
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// Handle fixed-up arguments!
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cl::SetVersionPrinter(&printVersion);
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cl::ParseCommandLineOptions(final_args.size(), const_cast<char**>(&final_args[0]),
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"LDC - the LLVM D compiler\n"
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#if LDC_LLVM_VER < 302
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, true
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#endif
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);
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bool helpOnly;
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Strings files;
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parseCommandLine(argc, argv, files, helpOnly);
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// Print config file path if -v was passed
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if (global.params.verbose) {
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const std::string& path = cfg_file.path();
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if (!path.empty())
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printf("config %s\n", path.c_str());
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}
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bool skipModules = mCPU == "help" ||(!mAttrs.empty() && mAttrs.front() == "help");
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// Negated options
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global.params.link = !compileOnly;
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global.params.obj = !dontWriteObj;
|
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global.params.useInlineAsm = !noAsm;
|
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|
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// String options: std::string --> char*
|
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initFromString(global.params.objname, objectFile);
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initFromString(global.params.objdir, objectDir);
|
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|
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initFromString(global.params.docdir, ddocDir);
|
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initFromString(global.params.docname, ddocFile);
|
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global.params.doDocComments |=
|
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global.params.docdir || global.params.docname;
|
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|
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initFromString(global.params.xfilename, jsonFile);
|
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if (global.params.xfilename)
|
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global.params.doXGeneration = true;
|
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|
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initFromString(global.params.hdrdir, hdrDir);
|
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initFromString(global.params.hdrname, hdrFile);
|
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global.params.doHdrGeneration |=
|
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global.params.hdrdir || global.params.hdrname;
|
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|
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initFromString(global.params.moduleDepsFile, moduleDepsFile);
|
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if (global.params.moduleDepsFile != NULL)
|
||||
{
|
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global.params.moduleDeps = new OutBuffer;
|
||||
}
|
||||
|
||||
processVersions(debugArgs, "debug",
|
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DebugCondition::setGlobalLevel,
|
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DebugCondition::addGlobalIdent);
|
||||
processVersions(versions, "version",
|
||||
VersionCondition::setGlobalLevel,
|
||||
VersionCondition::addGlobalIdent);
|
||||
|
||||
global.params.output_o =
|
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(opts::output_o == cl::BOU_UNSET
|
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&& !(opts::output_bc || opts::output_ll || opts::output_s))
|
||||
? OUTPUTFLAGdefault
|
||||
: opts::output_o == cl::BOU_TRUE
|
||||
? OUTPUTFLAGset
|
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: OUTPUTFLAGno;
|
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global.params.output_bc = opts::output_bc ? OUTPUTFLAGset : OUTPUTFLAGno;
|
||||
global.params.output_ll = opts::output_ll ? OUTPUTFLAGset : OUTPUTFLAGno;
|
||||
global.params.output_s = opts::output_s ? OUTPUTFLAGset : OUTPUTFLAGno;
|
||||
|
||||
templateLinkage =
|
||||
opts::linkonceTemplates ? LLGlobalValue::LinkOnceODRLinkage
|
||||
: LLGlobalValue::WeakODRLinkage;
|
||||
|
||||
if (global.params.run || !runargs.empty()) {
|
||||
// FIXME: how to properly detect the presence of a PositionalEatsArgs
|
||||
// option without parameters? We want to emit an error in that case...
|
||||
// You'd think getNumOccurrences would do it, but it just returns the
|
||||
// number of parameters)
|
||||
// NOTE: Hacked around it by detecting -run in getenv_setargv(), where
|
||||
// we're looking for it anyway, and pre-setting the flag...
|
||||
global.params.run = true;
|
||||
if (!runargs.empty()) {
|
||||
char const * name = runargs[0].c_str();
|
||||
char const * ext = FileName::ext(name);
|
||||
if (ext && FileName::equals(ext, "d") == 0 &&
|
||||
FileName::equals(ext, "di") == 0) {
|
||||
error("-run must be followed by a source file, not '%s'", name);
|
||||
}
|
||||
|
||||
files.push(mem.strdup(name));
|
||||
runargs.erase(runargs.begin());
|
||||
} else {
|
||||
global.params.run = false;
|
||||
error("Expected at least one argument to '-run'\n");
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
files.reserve(fileList.size());
|
||||
typedef std::vector<std::string>::iterator It;
|
||||
for(It I = fileList.begin(), E = fileList.end(); I != E; ++I)
|
||||
if (!I->empty())
|
||||
files.push(mem.strdup(I->c_str()));
|
||||
|
||||
if (global.errors)
|
||||
{
|
||||
fatal();
|
||||
}
|
||||
if (files.dim == 0 && !skipModules)
|
||||
if (files.dim == 0 && !helpOnly)
|
||||
{
|
||||
cl::PrintHelpMessage();
|
||||
return EXIT_FAILURE;
|
||||
}
|
||||
|
||||
Array* libs;
|
||||
if (global.params.symdebug)
|
||||
{
|
||||
libs = global.params.debuglibnames;
|
||||
}
|
||||
else
|
||||
libs = global.params.defaultlibnames;
|
||||
|
||||
if (!noDefaultLib)
|
||||
{
|
||||
if (libs)
|
||||
{
|
||||
for (unsigned i = 0; i < libs->dim; i++)
|
||||
{
|
||||
char* lib = static_cast<char *>(libs->data[i]);
|
||||
char *arg = static_cast<char *>(mem.malloc(strlen(lib) + 3));
|
||||
strcpy(arg, "-l");
|
||||
strcpy(arg+2, lib);
|
||||
global.params.linkswitches->push(arg);
|
||||
}
|
||||
}
|
||||
else
|
||||
{
|
||||
global.params.linkswitches->push(mem.strdup("-ldruntime-ldc"));
|
||||
}
|
||||
}
|
||||
|
||||
if (global.params.useUnitTests)
|
||||
global.params.useAssert = 1;
|
||||
|
||||
// Bounds checking is a bit peculiar: -enable/disable-boundscheck is an
|
||||
// absolute decision. Only if no explicit option is specified, -release
|
||||
// downgrades useArrayBounds 2 to 1 (only for safe functions).
|
||||
if (opts::boundsChecks == cl::BOU_UNSET)
|
||||
global.params.useArrayBounds = opts::nonSafeBoundsChecks ? 2 : 1;
|
||||
else
|
||||
global.params.useArrayBounds = (opts::boundsChecks == cl::BOU_TRUE) ? 2 : 0;
|
||||
|
||||
// LDC output determination
|
||||
|
||||
// if we don't link, autodetect target from extension
|
||||
if(!global.params.link && !createStaticLib && global.params.objname) {
|
||||
ext = FileName::ext(global.params.objname);
|
||||
bool autofound = false;
|
||||
if (!ext) {
|
||||
// keep things as they are
|
||||
} else if (strcmp(ext, global.ll_ext) == 0) {
|
||||
global.params.output_ll = OUTPUTFLAGset;
|
||||
autofound = true;
|
||||
} else if (strcmp(ext, global.bc_ext) == 0) {
|
||||
global.params.output_bc = OUTPUTFLAGset;
|
||||
autofound = true;
|
||||
} else if (strcmp(ext, global.s_ext) == 0) {
|
||||
global.params.output_s = OUTPUTFLAGset;
|
||||
autofound = true;
|
||||
} else if (strcmp(ext, global.obj_ext) == 0 || strcmp(ext, global.obj_ext_alt) == 0) {
|
||||
global.params.output_o = OUTPUTFLAGset;
|
||||
autofound = true;
|
||||
} else {
|
||||
// append dot, so forceExt won't change existing name even if it contains dots
|
||||
size_t len = strlen(global.params.objname);
|
||||
char* s = static_cast<char *>(mem.malloc(len + 1 + 1));
|
||||
memcpy(s, global.params.objname, len);
|
||||
s[len] = '.';
|
||||
s[len+1] = 0;
|
||||
global.params.objname = s;
|
||||
|
||||
}
|
||||
if(autofound && global.params.output_o == OUTPUTFLAGdefault)
|
||||
global.params.output_o = OUTPUTFLAGno;
|
||||
}
|
||||
|
||||
// only link if possible
|
||||
if (!global.params.obj || !global.params.output_o || createStaticLib)
|
||||
global.params.link = 0;
|
||||
|
||||
if (createStaticLib && createSharedLib)
|
||||
error("-lib and -shared switches cannot be used together");
|
||||
|
||||
if (createSharedLib && mRelocModel == llvm::Reloc::Default)
|
||||
mRelocModel = llvm::Reloc::PIC_;
|
||||
|
||||
if (global.params.link && !createSharedLib)
|
||||
{
|
||||
global.params.exefile = global.params.objname;
|
||||
if (files.dim > 1)
|
||||
global.params.objname = NULL;
|
||||
}
|
||||
else if (global.params.run)
|
||||
{
|
||||
error("flags conflict with -run");
|
||||
if (global.errors)
|
||||
fatal();
|
||||
}
|
||||
else if (global.params.objname && files.dim > 1) {
|
||||
if (createStaticLib || createSharedLib)
|
||||
{
|
||||
singleObj = true;
|
||||
}
|
||||
if (!singleObj)
|
||||
{
|
||||
error("multiple source files, but only one .obj name");
|
||||
fatal();
|
||||
}
|
||||
}
|
||||
|
||||
if (soname.getNumOccurrences() > 0 && !createSharedLib) {
|
||||
error("-soname can be used only when building a shared library");
|
||||
fatal();
|
||||
}
|
||||
|
||||
// create a proper target
|
||||
Ir ir;
|
||||
|
||||
Reference in New Issue
Block a user