This is a fork of official clib2 present in adtools. The point of this library is to make it Amiga OS4 only to maintain it easily and add all missing clib2 features that are hard to add also on classic amigas. Classic amigas has also ixemul that is the most complete, POSIX compliant, library we have. It is useless share code that most probably no one will use. Te goal is to try to make it POSIX compliant and fix also all C++ problems we have with newer compilers. All warnings (except really few one) produced by GCC 10 and above are now gone.
All deprecated OS4 functions are replaced by modern one (except for StackSwap i don't find the replacement)

For the original README follow this link

The new functions and code most of the time is tested. Also some tests has been added to be sure that added features and functions are working correctly. Usually all new functions has been tested against linux. If you find any issue please report it.

Clib2 now has also a working shared version called libc.so. And of course also all other libs. Don't use newlib .so files when linking because it will not work

If you want to use dlopen/dlsym with shared objects:

YOU MUST compile your Clib2 version of library you want to use!
DON'T TRY TO USE newlib shared objects because it will crash badly!
DON'T USE static libraries otherwise you could have undefined symbols!

The plain libc.a now contains also libnet.a, libunix.a. Socket support and floating point support are always enabled.
Soft float version is no longer available.

Clib2 define __THREAD_SAFE used to check if the library is thread safe

If you want to use the shared version of library remember to pack your OS4 software with all clib2 shared objects othwerwise the elf loader will try to load objects from SOBJS: and it will load newlib one.
DON'T overwrite SOBJS: files with your Clib2 files othwerise OS4 most probably will not load them and you could have problems running existent software!

Clib2 now use Wheel Of Fortune allocator that is faster than previous one an it seems more robust and with a cleaner and portable code

Some functions like (memchr, memcmp, memcpy and some other) are optimized for SAM440 and SAM460. Feel free to add other CPU versions.

libmotovec has been added to clib2 and enable some altivec functions. Altivec optimizations are not enabled at program start except if you recompile clib2 with ENABLE_ALTIVEC_AT_START.
However two new methods (enableAltivec and disableAltivec) are present and you can use them to enable or disable optimizations at runtime.
Keep in mind that clib2 is not compiled with altivec optimizations for all files.

Shared objects are working also with clib2 (there is an example under test_programs/dlopen folder). using dlopen/dlsym will not crash anymore however there is a bug in libstdc++.so that is causing a crash on program start.
So if you want to use libstdc++ it is better to remove it and link against the static version.
However they needs the beta elf.library not yet released to public

Large files are now supported and tested (A working version of p7zip has been tested with a 8GB file without any problem).

Clib2 now contains shm* and msg* functions. It needs SYSV IPC library. If you don't install it those functions will not work and will return to you an ENOSYS error.

libunix doesn't exists anymore but you can enable/disable unix support at any time. By default unix support it is disabled. If you want to enable it at runtime you can create a .unix file inside the exe directory or use enableUnixPaths() function in your software.
You can also disable it at runtime using disableUnixPaths(). However is not reccomanded to enable and disable it at runtime because you could have problems with internal structures.

All wctype functions should be working correctly now. We need a valid test suite.
All wchar functions are now implemented and tested but maybe something is not working correctly. There are no valid tests except a little few so if you find any issue please report it.

Locales relies always to OS4 locales but now you can set the encoding so wide functons will work correctly. Accepted encodings are:

C-UTF-8 C-EUCJP C-SJIS C-JIS ISO-8859-1

Math library has been replaced with openlibm (https://github.com/JuliaMath/openlibm).
This version is faster and more compatible and contains also fenv support that wasn't implemented in clib2.

Complex numbers has been added to libm and tests has been added to test that everything is working correctly.
A lot of other functions has been added trying to make OS4 ports easier.

Clib2 now contain also libauto with almost all OS4 components. We'll try to keep them updated.

Clib2 now contain a native pthread implementation. However pthread functions are in libc and libpthread is just a stub. That's because pthread functions are used (and will be used more in the future) internally and they are needed by libc.
libpthread.a is however present as stub to avoid old program stop compiling claiming this library

Added resolv library to use dns functions. A lot of socket functions that was using bsdsocket.library now use this library. And thanks to this library more functions have been added to socket library

Added crypt library that implements crypt and crypt_r

• About salt

The characters that can be specified are [a-zA-Z0-9. /]. Lowercase alphabets, uppercase alphabets, numbers,'.' And'/'.

By adjusting the format of the salt passed to the crypt function, you can ** specify the hash algorithm **. Make salt like $ (id) $ (salt string) $. id is a number to specify the hash algorithm. (The hash algorithm will be described later) (By the way, the $ mark at the end of the salt string can be omitted.)

• Salt id and hash algorithm

Correspondence table between id and hash algorithm

If not specified, it will be DES. DES is very vulnerable and is not recommended because it uses only 2 characters for Salt and only recognizes passwords for up to 8 characters.

Number of characters in salt DES: Fixed to 2 characters (only the first 2 characters of the salt string are seen, the characters after that are ignored) MD5: Up to 8 characters (see only the first 8 characters of the salt string, the characters after that are ignored)

About the security of the hash algorithm DES<MD5<SHA-256<SHA-512 And, the larger the id number, the higher the safety.

Use -lcrypt option when linking.

To use debug functions you have to explicitly pass DEBUG=true to GNUMakefile.os4 and debug functions will be enabled

Clib2 now supports opening directories with open() and opendir() functions. There are also new other functions that are used with fd int files. Check fcntl.h for details

Don't call exit() function in an alarm() handler otherwise your program will be stuck at exit.
All crt files needs to be compiled with -fno-aggressive-loop-optimizations! Otherwise you will have problems during constructors/destructors executions

• There is a memory leak at clib2 end needs to be tracked down
• Try to use Microsoft mimalloc as memory allocator that should be faster and more better when there are multiple cores.
• Create a shared library
• Add a test suite
• Try to use some functions/headers from https://github.com/attractivechaos/klib to improve speed

Because this library is in part based upon free software it would be uncourteous not to make it free software itself. The BSD license would probably be appropriate here.

The PowerPC math library is based in part on work by Sun Microsystems:

Copyright (C) 1993 by Sun Microsystems, Inc. All rights reserved.

Developed at SunPro, a Sun Microsystems, Inc. business. Permission to use, copy, modify, and distribute this software is freely granted, provided that this notice is preserved.

Most of (actual) wchar functions are based in part from newlib code. Copyright (c) 1990 The Regents of the University of California. All rights reserved.

Redistribution and use in source and binary forms are permitted provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, and other materials related to such distribution and use acknowledge that the software was developed by the University of California, Berkeley. The name of the University may not be used to endorse or promote products derived from this software without specific prior written permission. THIS SOFTWARE IS PROVIDED ``AS IS'' AND WITHOUT ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, WITHOUT LIMITATION, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE.

iconv code license Copyright (c) 2003-2004, Artem B. Bityuckiy

Redistribution and use in source and binary forms, with or without modification, are permitted provided that the following conditions are met:

1. Redistributions of source code must retain the above copyright notice, this list of conditions and the following disclaimer.
2. Redistributions in binary form must reproduce the above copyright notice, this list of conditions and the following disclaimer in the documentation and/or other materials provided with the distribution.

THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.