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 with the best possible performance and the tiniest footprint imaginable. For further details, read Cosmopolitan Third Edition, the Cosmo README, and the Cosmopolitan Toolchain README.

Improvements

We now have a higher quality memory map implementation.

• 6ffed14b9c Rewrite memory manager
• 0dbf01bf1d Bring Lua to 5.4.6. (#1214)
• 7f6d0b8709 Support -x LANG flag in cosmocc
• f2c8ddbbe3 Fix --strace use-after-free in pthread_join()
• d1d4388201 Delete ASAN

We've made a lot of progress reinventing the C++ STL.

• 8b3e368e9a ctl::string small-string optimization (#1199)
• c4c812c154 Introduce ctl::set and ctl::map
• f9dd5683a4 Implement ctl::unique_ptr (#1216)
• 118db71121 Provide a minimal new.h for CTL (#1205)
• a795017416 Fix c.inc _Atomic define for C++ (#1231)
• d7b1919b29 ctl::unique_ptr improvements and cleanup (#1221)
• 7e780e57d4 More ctl::string optimization (#1232)
• 9a5a13854d CTL: utility.h, use ctl::swap in string (#1227)
• e38a6e7996 ctl string const/value tweaks (#1218)
• d44a7dc603 Fix bugs in in ctl::optional (#1203)
• 2ba6b0158f Fix some memory issues with ctl::string (#1201)
• f86e6f8eb0 Make new.cc definitions weak (#1233)
• 03b476f943 Minor small-string errata from #1199
• f3effcb703 One more SSO erratum from #1199
• 32643e9fa7 Decouple swap from std (#1211)
• a0410f0170 Make big_string pod (#1204)

We've been making improvements to our GitHub development process.

• df6b384e31 github: add labeler action (#1196)
• 280bdec817 github: add issue template (#1195)
• 8e3b361aeb Remove testing label from labeler.yml (#1220)