Cosmopolitan Libc v1.0 Released

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 or UEFI with the best possible performance and the tiniest footprint imaginable.

Changes

Getting Started

If you're doing your development work on Linux or BSD then you need just five files to get started. Here's what you do on Linux:

wget https://justine.lol/cosmopolitan/cosmopolitan-amalgamation-1.0.zip
unzip cosmopolitan-amalgamation-1.0.zip
printf 'main() { printf("hello world\\n"); }\n' >hello.c
gcc -g -Os -static -nostdlib -nostdinc -fno-pie -no-pie -mno-red-zone \
  -fno-omit-frame-pointer -pg -mnop-mcount \
  -o hello.com.dbg hello.c -fuse-ld=bfd -Wl,-T,ape.lds \
  -include cosmopolitan.h crt.o ape.o cosmopolitan.a
objcopy -S -O binary hello.com.dbg hello.com

You now have a portable program. Please note that your APE binary will assimilate itself as a conventional resident of your platform after the first run, so it can be fast and efficient for subsequent executions.

./hello.com
bash -c './hello.com'  # zsh/fish workaround (we upstreamed patches)

So if you intend to copy the binary to Windows or Mac then please do that before you run it, not after.

If you're developing on MacOS you can install the GNU compiler collection for x86_64-elf via homebrew:

brew install x86_64-elf-gcc

Then in the above scripts just replace gcc and objcopy with x86_64-elf-gcc and x86_64-elf-objcopy to compile your APE binary.

If you're developing on Windows then you need to download an x86_64-pc-linux-gnu toolchain beforehand. See the Compiling on Windows tutorial. It's needed because the ELF object format is what makes universal binaries possible.

Cosmopolitan can also be compiled from source on any Linux distro.

wget https://justine.lol/cosmopolitan/cosmopolitan-1.0.tar.gz
tar xf cosmopolitan-1.0.tar.gz  # see releases page
cd cosmopolitan
make -j8  # should take ~30 seconds
o//examples/hello.com
o/third_party/lua/lua.com -e 'print(2 + 2)'
o/third_party/quickjs/qjs.com -e 'console.log(2+2)'
echo select 2 + 2 | o/third_party/sqlite3/sqlite3.com
printf 'GET /404.html\n\n' | o//examples/nc.com redbean.justine.lol 80
o//tool/viz/life.com

Contributing

We have automated Travis CI testing. Any pull request you send is going to get feedback in 2 minutes and 16 seconds. That's how long Travis CI takes to test this whole repository, which builds 14,507 objects, 68 libraries, and 461 static executables, 289 of which are test executables which are run too. On a real PC, building and testing everything from scratch takes 34 seconds instead of two minutes. If the hostnames freebsd, openbsd, netbsd, rhel7, rhel5, xnu, win7, and win10 can be ssh'd into, then make test -j8 takes 15 additional seconds to deploy and run all 300 test executables on those operating systems too. See CONTRIBUTING.md for further details.

Support Vector

Platform	Min Version	Circa
AMD	K8 Venus	2005
Intel	Core	2006
New Technology	Vista	2006
GNU/Systemd	2.6.18	2007
XNU's Not UNIX!	15.6	2018
FreeBSD	12	2018
OpenBSD	6.4	2018
NetBSD	9.1	2020
GNU Make	3.80	2010

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