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Merge pull request #218 from bugaevc/dyld-usage
Output usage if dyld-multilib is launched with no arguments
authored by
Luboš Doležel
and committed by
GitHub
f5a4e7a9
726567c1
+37
-1
+34
-1
src/dyld/dyld-multilib.c
+34
-1
src/dyld/dyld-multilib.c
···
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const char* decideFat(int fd, bool swapEndian);
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int registerDeregister(const char* argv0, bool reg);
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int registerDeregisterRun(const char* argv0, const char* bits, bool reg);
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void printHelp(const char* argv0);
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int main(int argc, char** argv)
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{
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const char* target = "64";
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bool reg;
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char *progfile, *pos;
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-
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if (argc < 2 || strcmp(argv[1], "-h") == 0 || strcmp(argv[1], "--help") == 0)
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{
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printHelp(argv[0]);
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return 1;
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}
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if (argc == 2 && (reg = !strcmp(argv[1], "--register") || !strcmp(argv[1], "--deregister")))
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return registerDeregister(argv[0], reg);
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···
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}
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}
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void printHelp(const char* argv0)
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{
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fprintf(stderr, "This is Darling dyld, a dynamic loader for Mach-O executables.\n\n");
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fprintf(stderr, "Copyright (C) 2012-2016 Lubos Dolezel\n\n");
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fprintf(stderr, "NOTE: This program shouldn't be normally invoked directly."
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" Use \"darling\" command instead.\n\n");
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fprintf(stderr, "Usage:\n");
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fprintf(stderr, "\t%s program-path [arguments...]\n", argv0);
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fprintf(stderr, "\t%s --register\n", argv0);
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fprintf(stderr, "\t%s --deregister\n\n", argv0);
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fprintf(stderr, "Environment variables:\n"
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"\tDYLD_DEBUG=expr - enable(+) or disable(-) debugging channels (debug, trace, error), e.g. +debug,-error\n"
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#ifdef HAS_DEBUG_HELPERS
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"\tDYLD_TRAMPOLINE=file - enable debugging trampolines, with argument info in file\n"
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"\tDYLD_IGN_MISSING_SYMS - replace missing symbols with a stub function\n\n"
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#endif
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"\tDYLD_ROOT_PATH=<path> - set the base for library path resolution (overrides autodetection)\n"
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"\tDYLD_BIND_AT_LAUNCH - force dyld to bind all lazy references on startup\n"
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"\tDYLD_PRINT_INITIALIZERS - print initializers when they are invoked\n"
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"\tDYLD_PRINT_LIBRARIES - print libraries when they are loaded\n"
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"\tDYLD_PRINT_SEGMENTS - print segments when they are mapped into memory\n"
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"\tDYLD_PRINT_BINDINGS - print out when binds/ext. relocs are being resolved\n"
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"\tDYLD_PRINT_RPATHS - print @rpath resolution attempts\n\n");
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}
+3
src/dyld/dyld.cpp
+3
src/dyld/dyld.cpp
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std::cerr << "This is Darling dyld for " ARCH_NAME ", a dynamic loader for Mach-O executables.\n\n";
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std::cerr << "Copyright (C) 2012-2016 Lubos Dolezel\n\n";
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std::cerr << "NOTE: This program shouldn't be normally invoked directly."
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" Use \"darling\" command instead.\n\n";
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std::cerr << "Usage: " << argv0 << " program-path [arguments...]\n\n";
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std::cerr << "Environment variables:\n"