cosmopolitan/libc
2023-09-10 11:52:03 -07:00
..
calls Improve performance and remove fd leaks 2023-09-10 11:52:03 -07:00
crt Implement thread cancellation for aarch64 2023-09-07 08:48:38 -07:00
dns Fix warnings 2023-09-01 20:50:18 -07:00
elf Fix warnings 2023-09-01 20:50:18 -07:00
fmt Make the Windows Console work better 2023-09-07 18:27:22 -07:00
integral Make improvements 2023-09-06 12:34:59 -07:00
intrin Overhaul process spawning 2023-09-10 08:17:44 -07:00
isystem Make the Windows Console work better 2023-09-07 18:27:22 -07:00
log Improve performance and remove fd leaks 2023-09-10 11:52:03 -07:00
mem Overhaul process spawning 2023-09-10 08:17:44 -07:00
nexgen32e Make improvements 2023-09-06 12:34:59 -07:00
nt Overhaul Windows signal handling 2023-09-08 01:49:41 -07:00
runtime Improve performance and remove fd leaks 2023-09-10 11:52:03 -07:00
sock Overhaul Windows signal handling 2023-09-08 01:49:41 -07:00
stdio Improve performance and remove fd leaks 2023-09-10 11:52:03 -07:00
str Overhaul process spawning 2023-09-10 08:17:44 -07:00
sysv Implement thread cancellation for aarch64 2023-09-07 08:48:38 -07:00
testlib Improve performance and remove fd leaks 2023-09-10 11:52:03 -07:00
thread Overhaul process spawning 2023-09-10 08:17:44 -07:00
time Get Fat Emacs working on Apple Silicon 2023-08-17 22:01:42 -07:00
tinymath Reduce mandatory stack rss by 256kb 2023-09-07 04:33:01 -07:00
vga [metal] Fix video mode filtering & frame buffer ref-counting (#889) 2023-09-06 03:41:07 -07:00
x Make improvements 2023-09-06 12:34:59 -07:00
ar.h Rewrite Cosmopolitan Ar 2023-07-02 10:19:16 -07:00
assert.h Make greenbean web server better 2023-09-07 03:44:50 -07:00
atomic.h Optimize memory layout 2022-09-12 04:26:52 -07:00
complex.h Port a lot more code to AARCH64 2023-05-14 09:37:26 -07:00
cosmo.h Invent systemvpe() function 2023-08-09 00:27:55 -07:00
dce.h Replace COSMO define with _COSMO_SOURCE 2023-08-13 20:55:04 -07:00
disclaimer.inc
dos.internal.h Introduce #include <cosmo.h> to toolchain users 2023-06-09 18:03:05 -07:00
empty.s Do some basic build tuning 2023-05-10 04:20:46 -07:00
errno.h Replace COSMO define with _COSMO_SOURCE 2023-08-13 20:55:04 -07:00
imag.internal.h Remove evil constants from cosmopolitan.h 2022-12-17 00:42:45 -08:00
inttypes.h Fix inttypes.h FAST16 macros to have a correct definition (#791) 2023-03-29 00:19:40 -07:00
iso646.internal.h Add more missing C / C++ headers 2022-09-04 04:53:52 -07:00
libc.mk Get GNU GMP test suite fully passing 2023-08-21 10:16:42 -07:00
limits.h Make improvements 2023-09-06 12:34:59 -07:00
literal.h Get GNU MPFR and MPC tests to pass 2023-08-21 15:05:10 -07:00
mach.internal.h Introduce #include <cosmo.h> to toolchain users 2023-06-09 18:03:05 -07:00
macho.internal.h Fiddle around with Mach-O 2023-05-20 04:13:49 -07:00
macros.internal.h Introduce new linker for fat ape binaries 2023-08-11 04:39:19 -07:00
math.h Get GNU MPFR and MPC tests to pass 2023-08-21 15:05:10 -07:00
notice.inc
notice.internal.h
paths.h Embed cocmd.com interpreter for system() / open() 2022-10-02 15:29:57 -07:00
README.md Reformat libc README.md (#437) 2022-06-21 07:50:42 -07:00
stdalign.internal.h Add more missing C / C++ headers 2022-09-04 04:53:52 -07:00
stdbool.h Make fatcosmocc good enough to build ncurses 6.4 2023-08-12 22:30:05 -07:00
stdckdint.h Perform inconsequential code cleanup 2023-08-07 20:24:50 -07:00
temp.h Overhaul process spawning 2023-09-10 08:17:44 -07:00
type2str.h Improve new C23 checked arithmetic feature 2023-06-16 15:32:18 -07:00
zip.internal.h Fix warnings 2023-09-01 20:50:18 -07:00

Cosmopolitan Standard Library

This directory defines static archives defining functions, like printf(), mmap(), win32, etc. Please note that the Cosmopolitan build configuration doesn't link any C/C++ library dependencies by default, so you still have the flexibility to choose the one provided by your system. If you'd prefer Cosmopolitan, just add $(LIBC) and $(CRT) to your linker arguments.

Your library is compromised of many bite-sized static archives. We use the checkdeps tool to guarantee that the contents of the archives are organized in a logical way that's easy to use with or without our makefile infrastructure, since there's no cyclic dependencies.

The Cosmopolitan Library exports only the most stable canonical system calls for all supported operating systems, regardless of which platform is used for compilation. We polyfill many of the APIs, e.g. read(), write() so they work consistently everywhere while other apis, e.g. CreateWindowEx(), might only work on one platform, in which case they become no-op functions on others.

Cosmopolitan polyfill wrappers will usually use the dollar sign naming convention, so they may be bypassed when necessary. This same convention is used when multiple implementations of string library and other performance-critical function are provided to allow Cosmopolitan to go fast on both old and newer computers.

We take an approach to configuration that relies heavily on the compiler's dead code elimination pass (libc/dce.h). Most of the code is written so that, for example, folks not wanting support for OpenBSD can flip a bit in SUPPORT_VECTOR and that code will be omitted from the build. The same is true for builds that are tuned using -march=native which effectively asks the library to not include runtime support hooks for x86 processors older than what you use.

Please note that, unlike Cygwin or MinGW, Cosmopolitan does not achieve broad support by bolting on a POSIX emulation layer. We do nothing more than (in most cases) stateless API translations that get you 90% of the way there in a fast lightweight manner. We therefore can't address some of the subtle differences, such as the nuances of absolute paths on Windows. Our approach could be compared to something more along the lines of, "the Russians just used a pencil to write in space", versus spending millions researching a pen like NASA.