Issues while building for MacOS M2 with CMake

[buhtr]

Built ydb for MacOS M2 using CMake as I am not familiar with Yatool yet.

The build host is:

Darwin 22.6.0 Darwin Kernel Version 22.6.0: Sun Dec 17 22:13:25 PST 2023; root:xnu-8796.141.3.703.2~2/RELEASE_ARM64_T6020 arm64

To allow this to happen the following errors has been fixed:

1. Changed ar to llvm-ar in a file clang.toolchain

set(CMAKE_AR llvm-ar)

As ar failed to correctly create static libs.

2. In a file cmake/FindAIO.cmake commented search for libaio, as it does not supported by MacOS. This changes do not affected on a build process but may be it affects on a run ? Ydbd seems to start fine after build.

#find_path(AIO_INCLUDE_DIR
#  libaio.h
#  HINTS $ENV{AIO_ROOT}/include /usr/include REQUIRED)

#find_library(AIO_LIBRARIES
#  aio
#  HINTS $ENV{AIO_ROOT}/lib REQUIRED)

3. The file contrib/libs/cxxsupp/builtins/aarch64/sme-libc-routines.c applies _arm_streaming_compatible, but this keyword has appeared only in a clang-18. Just commented it.

4. The lib contrib/libs/openldap/ does not fix problem with gethostbyname_r. MacOS does not have such function in a glibc.
   Created contrib/libs/openldap/include/portable-osx.h. And changed portable.h to

#pragma once

#if defined(__APPLE__)
#   include "portable-osx.h"
#else
#   include "portable-linux.h"
#endif

#if defined(_musl_)
#   include "portable-musl.h"
#endif

5. Several CMake files for libs contain the following code

target_link_options(restricted-aws-aws-c-cal INTERFACE
  -framework
  Security
)

CMake Probably removes duplicates and this leads to put in a LINK_FLAGS just "Security" without "-framework". In order to fix this the keyword "SHELL" is applied:

target_link_options(restricted-aws-aws-c-cal INTERFACE "SHELL:-framework Security")

Fixed in the following files:

• contrib/libs/curl/CMakeLists.darwin-arm64.txt (SystemConfiguration)
• contrib/restricted/aws/aws-c-cal/CMakeLists.darwin-arm64.txt (Security)

6. Installed locally correct version of antrl

7. The libxml uses iconv but does not provide target_link_options for it, just added it

8. After all ydbd is built and can be started.

9. Ydb linked with llvm14 from contrib but in a config the clang-16 is a compiler. Do not have any issues with it just curious may be it need to be switched on llvm16 ?

As your main build tool is Yatool and it is used to build CMake files I am not sure how to create a PR for this issues. Feel free to write me back if such PR will be valuable for your.