jart/cosmopolitan 3.1

Cosmopolitan v3.1

on GitHub

Cosmopolitan Libc makes C a build-once run-anywhere language, like Java, except it doesn't need an interpreter or virtual machine. Instead, it reconfigures stock GCC and Clang to output a POSIX-approved polyglot format that runs natively on Linux + Mac + Windows + FreeBSD + OpenBSD + NetBSD + BIOS with the best possible performance and the tiniest footprint imaginable.

Overview

This release fixes issues with the 3.0.x series. A new cosmo_dlopen() function is now provided that's good enough to load nontrivial dynamic libraries on all platforms except OpenBSD. Cosmos binaries are now being distributed on our new online service https://cosmo.zip/ that's operated by the Cosmopolitan authors. This release was made possible thanks to the testing and contribution efforts of our GitHub and Discord communities https://discord.gg/FwAVVu7eJ4. Thank you!

Changes

• 5330442 Avoid APE fork bomb
• 291103a Redesign cosmocc toolchain
• 751d20d Fix nsync_mu_unlock_slow_() on Apple Silicon
• 3ac473d Floating point parsing support for scanf family (#924)
• 8caf1b4 Improve time/sleep accuracy on Windows
• e4dea37 Make clock_nanosleep() cancel faster
• 32b97f2 Improve execve() path argument munging
• bcf268a Don't modify argument block on MacOS Arm64
• 0863427 Make development more pleasant on MacOS Arm64
• 48bd3d8 Fix sigaction() return handler address on XNU/BSD
• 3e6d536 Correct misunderstanding with zip64 extra records
• 0c89516 Fix unzip warning with apelink generated symtabs
• f25beb3 Add architecture flag to zipobj
• 736fdb7 Implement raise() with getcontext() / setcontext
• bd56a9c Rename dlopen() to cosmo_dlopen()
• f7cfe03 Fix dlopen() for FreeBSD and NetBSD
• 529cb48 Improve dlopen() on Apple Silicon
• dffee60 Run host compiler to create dlopen helper
• e4584ac Get cosmo_dlopen() working better on System Five
• ac125d3 Fix console copy/paste issue on Windows
• e961385 Put more thought into Windows i/o polyfills
• 7138399 Close Lua state before exiting redbean worker to allow GC to collect (#941)
• 5c1fdc9 Fix session changeset procesing (reverting some of 0d748ad changes) (#949)
• ddc08dc [metal] Make deathstar.com draw onto both VGA and serial consoles (#955)
• eea601f [metal] Some minor fixes and tweaks (#933)
• 545a8f4 Add more sched.h content
• 7a9e176 Improve debug binary location detection
• 68c7c9c Make strerror() conform more to other libc impls and introduce __clear_cache()
• 8f5e516 Remove sync_file_range
• 1351d3c Remove bool from public headers
• 1c2e7c1 Introduce SIP_DISABLED compile option for ape-m1.c
• 3b15d31 Fix #include <shared_mutex>
• c6d3802 Add more fixes for new cosmocc toolchain
• cdbd10c Introduce X86_CHECK() macro
• d2f49ca Improve mkdeps
• 15af5c2 Fix ucontext_t alignment in strict ansi mode
• b8d1377 Give new wait4() another review pass
• ea28f93 Support includes in monorepo
• cc3e3de Make args replace ... only at the end of file (#909)

Known Issues

Shells

If you use zsh and have trouble running APE programs try sh -c ./prog or simply upgrade to zsh 5.9+ (since we patched it two years ago). The same is the case for Python subprocess, old versions of fish, etc.

Linux

Some Linux systems are configured to launch MZ executables under WINE or run-detectors. You can fix that by registering APE with binfmt_misc:

sudo wget -O /usr/bin/ape https://cosmo.zip/pub/cosmos/bin/ape-$(uname -m).elf
sudo sh -c "echo ':APE:M::MZqFpD::/usr/bin/ape:' >/proc/sys/fs/binfmt_misc/register"
sudo sh -c "echo ':APE-jart:M::jartsr::/usr/bin/ape:' >/proc/sys/fs/binfmt_misc/register"

If things still aren't working, it's also possible to disable binfmt_misc as follows:

sudo sh -c 'echo -1 > /proc/sys/fs/binfmt_misc/cli'     # remove Ubuntu's MZ interpreter
sudo sh -c 'echo -1 > /proc/sys/fs/binfmt_misc/status'  # remove ALL binfmt_misc entries

WSL

WSL tries to run MZ executables as WIN32 binaries within the WSL environment. In order to make it safe to use Cosmopolitan software on WSL, run this:

sudo sh -c "echo -1 > /proc/sys/fs/binfmt_misc/WSLInterop"