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mirror of https://github.com/jart/cosmopolitan
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Justine Tunney f7c7b949fd Explore comfort level with posix_spawn 
Justine says nay for the time being. Only XNU implements this. It's not
clear what ABI XNU is using but it's obviously not the one in the POSIX
documentation link below. Since all platforms implement vfork, it might
be better to empirically gauge the intersection of consensus which will
have better performance than this interface.

https://pubs.opengroup.org/onlinepubs/009696699/xrat/xsh_chap03.html
2021-01-29 01:24:54 -08:00
ape Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
build Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
dsp Fix link order in cosmopolitan.a 2021-01-16 12:05:41 -08:00
examples Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
libc Explore comfort level with posix_spawn 2021-01-29 01:24:54 -08:00
net Fix XNU / FreeBSD / OpenBSD / RHEL5 / NT bugs 2021-01-25 18:31:17 -08:00
test Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
third_party Work towards improving signals and processes 2021-01-27 19:34:02 -08:00
tool Check for EINTR in poll$nt() 2021-01-28 15:53:06 -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 Cosmopolitan 0.1 2021-01-28 16:19:10 -08:00
NOTICE Change license 2020-12-27 17:18:44 -08:00
README.md Cosmopolitan 0.1 2021-01-28 16:19:10 -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.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.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