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Justine Tunney c843243322 Implement more security stuff 
- Support deterministic stacks on OpenBSD
- Support OpenBSD system call origin verification
- Fix overrun by one in chibicc string token allocator
- Get all chibicc tests passing under Address Sanitizer
2021-02-02 20:21:06 -08:00
.github Create FUNDING.yml 2021-01-29 14:56:22 -08:00
ape Implement more security stuff 2021-02-02 20:21:06 -08:00
build Implement more security stuff 2021-02-02 20:21:06 -08:00
dsp Make more functions friendly to Address Sanitizer 2021-02-02 03:45:31 -08:00
examples Implement more security stuff 2021-02-02 20:21:06 -08:00
libc Implement more security stuff 2021-02-02 20:21:06 -08:00
net Make C memory safe like Rust 2021-02-01 03:58:46 -08:00
test Implement more security stuff 2021-02-02 20:21:06 -08:00
third_party Implement more security stuff 2021-02-02 20:21:06 -08:00
tool Implement more security stuff 2021-02-02 20:21:06 -08:00
usr/share Add epoll and do more release readiness changes 2020-11-28 12:01:51 -08:00
.clang-format Add x86_64-linux-gnu emulator 2020-08-25 04:43:42 -07:00
.gitignore Make terminal ui binaries work well everywhere 2020-10-19 06:38:31 -07:00
Makefile Make more functions friendly to Address Sanitizer 2021-02-02 03:45:31 -08:00
NOTICE Change license 2020-12-27 17:18:44 -08:00
README.md Cosmopolitan 0.1.2 2021-01-30 10:13:13 -08:00

README.md

Cosmopolitan

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 to output a POSIX-approved polyglot format that runs natively on Linux + Mac + Windows + FreeBSD + OpenBSD + BIOS with the best possible performance and the tiniest footprint imaginable.

Background

For an introduction to this project, please read the αcτµαlly pδrταblε εxεcµταblε blog post and cosmopolitan libc website. We also have API documentation.

Getting Started

Here's how to get started with the freestanding hermetically-sealed monolithic source repository:

tar xf cosmopolitan-0.1.2.tar.gz  # see our releases page
cd cosmo
make -j12
o//examples/hello.com

Here's how to get started with the amalgamated binaries, which let you bring your own build system:

unzip cosmopolitan-amalgamated-0.1.2.zip  # see our releases page
echo 'main() { printf("hello world\n"); }' >hello.c
gcc -g -O -static -fno-pie -no-pie -mno-red-zone -nostdlib -nostdinc \
  -o hello.com.dbg hello.c -Wl,--gc-sections -Wl,-z,max-page-size=0x1000 -fuse-ld=bfd \
  -Wl,-T,ape.lds -include cosmopolitan.h crt.o ape.o cosmopolitan.a
objcopy -SO binary hello.com.dbg hello.com
./hello.com