# Cosmopolitan Cosmopolitan builds run natively on most platforms without dependencies, because it implements the subset of the C library, compiler runtimes and system call interfaces that've achieved near universal consensus amongst all major platforms, e.g. Linux/BSD/XNU/NT. Containerization is achieved by having binaries also be ZIP files. Modern static stock GNU toolchains are provided in a hermetic mono repo for the best historical determinism Here's how you can get started by printing cat videos inside a terminal: make -j8 o//tool/viz/printvideo.com wget https://justine.storage.googleapis.com/cats.mpg o//tool/viz/printvideo.com cats.mpg unzip -vl o//tool/viz/printvideo.com Cosmopolitan provides a native development environment similar to those currently being offered by RedHat, Google, Apple, Microsoft, etc. We're different in two ways: (1) we're not a platform therefore we don't have any commercial interest in making our tooling work better on one rather than another; and (2) we're only focused on catering towards interfaces all platforms agree upon. Goal is software that stands the test of time without the costs and restrictions cross-platform distribution entails. That makes Cosmopolitan an excellent fit for writing small CLI programs that do things like heavyweight numerical computations as a subprocess. ## Getting Started Just clone the repository and put your own folder in it. Please choose a name that's based on a .com or .org domain name registration you control which is scout's honor but might change to require TXT records in future We provide a script that makes it easy to start a new package: examples/package/new.sh com/github/user/project emacs com/github/user/project/program.c make o//com/github/user/project/program.com o//com/github/user/project/program.com Please note GNU make is awesome. Little known fact: make is a functional programming language. We improved upon it too! In [tool/build/package.c] which performs strict dependency checking, to correct Google's published mistakes c. 2006 which was when they switched from using a GNU Make repo in favor of an inhouse derivative called Blaze which does strictness too thereby allowing the repository to grow gracefully with any requirements ## Performance Your C Standard Library is designed to be competitive with glibc, which has historically been the best. Routines like [libc/nexgen32e/memcpy.S] are usually accompanied by microbenchmarks to demonstrate their merits. Where GNU, LLVM and MSVC got lazy is intrinsics. Cosmopolitan does that better. Your [ansitrinsics library] makes a 10x speedup so much easier, using Intel's new instructions, in such a way that only allows Intel to leverage their patents which have knowable expiry; rather than compiler intrinsics API copyrights, which might never expire like Walt Disney IP See [dsp/scale/cdecimate2xuint8x8.c] and [tool/viz/lib/ycbcr2rgb3.c] as an example, of how 4k video convolutions needed to print cat videos can be done from a single core without threads on a cheap computer, without sacrificing backwards compatibility due to excellent microarchitectural dispatch like [libc/nexgen32e/kcpuids.S], [libc/nexgen32e/x86feature.h] Furthermore Cosmopolitan provides you with Intel's official instruction length decoder Xed ravaged down to 3kb in size using Tim Patterson code stunts. So you can absolutely code high-performance lightweight fabless x86 microprocessors using any hobbyist board without royalties, because Xed tells us which parts of the encoding space now belong to the people ## Integrated Development Environment Your Cosmopolitan IDE is based on Emacs. When used alongside `make tags` it can automate certain toilsome problems such as adding an include line by typing `C-c C-h` with the cursor over a symbol. Please install these: sudo bash -c "$(wget -O - https://apt.llvm.org/llvm.sh)" sudo apt install gdb ragel ctags clang-format-10 # <-recommended git clone git@github.com:jart/cosmopolitan.git && cd cosmopolitan tool/scripts/install-emacs.sh # recommended over apt tool/scripts/configure-emacs.sh # adds load statements make tags # index all the symbol emacs # for power and glory! See [tool/emacs/cosmo-stuff.el] for further details. Further note that this codebase might seem to have an usual number of include statements quoted and vendored code, but that's actually why the tools work since it gives them easy perfect knowledge of what exists, thus performance. ## Specimen Cosmopolitan encodes binaries respecting the intersection of reasonable platform requirements. RADIX-256 disassembly of [examples/life.c] below should explain how easy it is to do pe+sh+elf+macho+bootloader overlays enabling gnu ld.bfd to produce a simple portable 12kb .com program file Please send feedback and concerns to since we would love to do an even better job. Please also report GPL abuse the address above as well. We believe this binary structure is novel, and therefore easily recognizable. 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f.☼▼ä     f.☼▼ä     f.☼▼ä     f.☼▼ä     f.☼▼ä     f.☼▼ä     ☼▼@    @             °→      ♠←       ←      2←      L←      ╲←       x←                                                               See also `build/objdump -xd o/tiny/examples/life.com.dbg | less` to view assembly and the linker glue in [ape/ape.lds] that makes it all possible ## Licensing Cosmopolitan is Free Software licensed under the GPLv2. The build config **will embed all linked sources inside your binaries** so the compliance is easy while facilitating trust and transparency similar to JavaScript. You can audit your source filesystem using ZIP GUIs e.g. Win10, InfoZip. ### Commercial Support If you want to be able to distribute binaries in binary only form, then please send $1,000 to Justine Tunney on PayPal, for a license lasting 1 year. This README will be updated in the event that this needs to change. Please reach out if there's anything you need. ## Contributing We'd love to accept your patches! Before we can take them, we have to jump through one legal hurdle. Please write an email to Justine Tunney saying you agree to give her copyright ownership to any changes you contribute to Cosmopolitan. We need to do that in order to dual license Cosmopolitan. Otherwise we can't create incentives that encourage corporations to share their source code with the community. ## Volunteering We also need volunteers who can help us further stabilize System Five's application binary interface. See our ABI scripts [libc/sysv/consts.sh] and [libc/sysv/syscalls.sh]. Magic numbers are usually stabler than API interfaces cf. NPM but we should ideally have fewer of them, similar to how SI has sought to have fewer defining physics constants. ## About Cosmopolitan mostly stands on the shoulders of giants and has few novel ideas, aside from taking care of low-level build system toil, so coding can become more beautifully pleasant. Cosmopolitan is maintained by Justine Tunney, who previously worked on projects like TensorFlow, [Operation Rosehub], [Nomulus], and Google's tape backups sre team. She's also helped radical activists by operating the [Occupy Wall Street] website. Justine Tunney currently isn't on the payroll of any company. She's been focusing on Cosmopolitan because she wants to give back to Free Software which helped her be successful. See her [LinkedIn] profile for further details on her professional history. [LinkedIn]: https://www.linkedin.com/in/jtunney [Nomulus]: https://github.com/google/nomulus [Occupy Wall Street]: https://www.newyorker.com/magazine/2011/11/28/pre-occupied [Operation Rosehub]: https://opensource.googleblog.com/2017/03/operation-rosehub.html [ansitrinsics library]: libc/intrin [ape/ape.lds]: ape/ape.lds [dsp/scale/cdecimate2xuint8x8.c]: dsp/scale/cdecimate2xuint8x8.c [examples/life.c]: examples/life.c [libc/nexgen32e/kcpuids.S]: libc/nexgen32e/kcpuids.S [libc/nexgen32e/memcpy.S]: libc/nexgen32e/memcpy.S [libc/nexgen32e/x86feature.h]: libc/nexgen32e/x86feature.h [libc/sysv/consts.sh]: libc/sysv/consts.sh [libc/sysv/syscalls.sh]: libc/sysv/syscalls.sh [tool/build/package.c]: tool/build/package.c [tool/emacs/cosmo-stuff.el]: tool/emacs/cosmo-stuff.el [tool/viz/lib/ycbcr2rgb3.c]: tool/viz/lib/ycbcr2rgb3.c