cosmopolitan/libc
2024-08-04 07:08:28 -07:00
..
calls Share file offset across execve() on Windows 2024-08-03 17:48:00 -07:00
crt Do more quality assurance work 2024-06-24 06:53:49 -07:00
dlopen Introduce cosmocc flags -mdbg -mtiny -moptlinux 2024-07-26 05:10:25 -07:00
elf Rerun clang-format on the repo (#1217) 2024-06-15 16:34:48 -04:00
fmt Support printf %n directive 2024-07-28 22:27:06 -07:00
integral Fix the build 2024-08-04 07:08:28 -07:00
intrin Share file offset across execve() on Windows 2024-08-03 17:48:00 -07:00
irq Get rid of .internal.h convention in LIBC_INTRIN 2024-07-19 19:38:00 -07:00
isystem Delete mislocated headers 2024-07-31 01:01:00 -07:00
log Update Musl Libc code 2024-07-30 22:51:29 -07:00
mem Fix some static analysis issues 2024-07-27 09:16:54 -07:00
nexgen32e Remove __threaded variable 2024-07-28 23:43:30 -07:00
nt Make some new Windows 10 memory APIs available 2024-07-19 22:26:49 -07:00
proc Share file offset across execve() on Windows 2024-08-03 17:48:00 -07:00
runtime Share file offset across execve() on Windows 2024-08-03 17:48:00 -07:00
sock Share file offset across execve() on Windows 2024-08-03 17:48:00 -07:00
stdio Update Musl Libc code 2024-07-30 22:51:29 -07:00
str Avoid legacy instruction penalties on x86 2024-07-31 01:02:38 -07:00
sysv Introduce cosmocc flags -mdbg -mtiny -moptlinux 2024-07-26 05:10:25 -07:00
testlib Avoid legacy instruction penalties on x86 2024-07-31 01:02:38 -07:00
thread Update Musl Libc code 2024-07-30 22:51:29 -07:00
tinymath Allow -c to be specified with -E in cosmocc 2024-07-31 02:09:15 -07:00
vga Fix ctype.h and wctype.h 2024-07-21 15:54:17 -07:00
x Update Musl Libc code 2024-07-30 22:51:29 -07:00
ar.h Reduce header complexity 2023-11-28 14:39:42 -08:00
assert.h Add dontthrow attribute to most libc functions 2024-01-09 01:26:03 -08:00
atomic.h
BUILD.mk Upgrade to 2022-era LLVM LIBCXX 2024-05-27 02:12:27 -07:00
complex.h libc headers: make <complex.h> work, add struct ipv6_mreq (#1100) 2024-02-05 17:22:56 -05:00
cosmo.h Remove bad defines from early days of project 2024-07-24 12:11:21 -07:00
ctype.h Fix ctype.h and wctype.h 2024-07-21 15:54:17 -07:00
cxxabi.h libc: Fix __cxa_thread_atexit prototype (#1088) 2024-01-22 10:23:28 -08:00
dce.h Delete ASAN 2024-06-22 05:45:49 -07:00
dos.internal.h Rerun clang-format on the repo (#1217) 2024-06-15 16:34:48 -04:00
empty.s
errno.h Make dlmalloc 2.4x faster for multithreading 2024-05-28 11:18:34 -07:00
imag.internal.h
inttypes.h Fix issues for latest GCC toolchain 2023-10-11 14:54:42 -07:00
iso646.internal.h Run clang-format (#1197) 2024-06-01 16:30:43 -04:00
limits.h Make improvements 2023-10-08 08:59:53 -07:00
literal.h Get GNU MPFR and MPC tests to pass 2023-08-21 15:05:10 -07:00
mach.internal.h Reduce header complexity 2023-11-28 14:39:42 -08:00
macho.internal.h Fiddle around with Mach-O 2023-05-20 04:13:49 -07:00
macros.internal.h Delete ASAN 2024-06-22 05:45:49 -07:00
math.h Release Cosmopolitan v3.6.0 2024-07-23 03:28:19 -07:00
paths.h
README.md
serialize.h Reduce header complexity 2023-11-28 14:39:42 -08:00
stdalign.internal.h
stdbool.h Make improvements 2024-02-12 10:23:00 -08:00
stdckdint.h Reduce header complexity 2023-11-28 14:39:42 -08:00
stdlib.h Upgrade to 2022-era LLVM LIBCXX 2024-05-27 02:12:27 -07:00
temp.h Add dontthrow attribute to most libc functions 2024-01-09 01:26:03 -08:00
testlib-test.txt Fix some zipos directory related bugs 2023-09-19 02:30:42 -07:00
time.h Implement proper time zone support 2024-05-04 23:06:37 -07:00
unistd.h Put confstr() in unistd.h 2024-05-21 15:35:06 -07:00
utime.h Implement proper time zone support 2024-05-04 23:06:37 -07:00
wctype.h Fix ctype.h and wctype.h 2024-07-21 15:54:17 -07:00
zip.internal.h Add dontthrow attribute to most libc functions 2024-01-09 01:26:03 -08:00

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.