Several problems with building on macOS (0.6.0)

[FallenChromium]

1. The brew command should include packages cmake (which is kinda obvious, but still), boost-python3 for 0.6.0 and also (for some absolutely wild reason) qt5. catch2 too, if it is preferable not to build it from submodules.
2. antlr4 does build itself even if it is installed, though as far as I understand it's not a macOS-specific build issue
3. The hardcoded LIBCLANG_LLVM_CONFIG_EXECUTABLE would not work on Apple Silicon Macs, because the default prefix of brew is changed to /opt/homebrew. Upon llvm's installation in brew, it is suggested to add llvm to path, export PATH="/opt/homebrew/opt/llvm/bin:$PATH", removing the need for this workaround.
4. Python version is hardcoded, at the moment macOS's version of Python is newer. It would be better to determine python's version the same way it happens with ${UNIX} platform
5. That said, even if I'd change the definitions to use python3.9 from brew, for it to find PythonLibs I must use -DPYTHON_LIBRARY=$(python3-config --prefix)/lib/libpython3.9.dylib -DPYTHON_INCLUDE_DIR=$(python3-config --prefix)/include/python3.9 flag for CMake upon Makefiles generation. I am not aware of any suitable fix for this problem at the moment.
6. atm, using Qt5.15 from brew raises "error: "Qt requires a C++17 compiler", but -std=c++14 is hardcoded for both GNU and Clang compilers. It's probably better to leave this option for CMake to decide on, or, as an alternate workaround, update it to -std=c++17.
7. RocksDB doesn't link correctly unless we will require a CMake package with find_package(RocksDB REQUIRED)

I know some of these issues have been resolved in 0.7.0 (partially because Python was removed as a dependency), but either way it's not clear when 0.7.0 will be released, so a lot of students with Macs will appreciate if 0.6.0 would get a fix ❤️

[FallenChromium]

To be clear, I'm running macOS Monterey 12.0.1 on MBA 2020 (M1).
So, for anyone willing to build sc-machine 0.6.0 on M1-powered Mac:

1. install dependencies: brew install boost glib llvm antlr antlr4-cpp-runtime pkgconfig rocksdb cmake boost-python3 qt5 catch2
2. Set up your shell environment to use all the installed packages (in ~/.zshrc):

export LDFLAGS="-L/opt/homebrew/opt/llvm/lib -Wl,-rpath,/opt/homebrew/opt/llvm/lib -L/opt/homebrew/opt/qt@5/lib -L/opt/homebrew/opt/rocksdb/lib"
export CPPFLAGS="-I/opt/homebrew/opt/qt@5/include -I/opt/homebrew/opt/rocksdb/include -I/opt/homebrew/opt/llvm/include"
export CMAKE_PREFIX_PATH=/opt/homebrew/opt/
export PKG_CONFIG_PATH="/opt/homebrew/opt/qt@5/lib/pkgconfig"
export PATH="/opt/homebrew/opt/qt@5/bin:/opt/homebrew/opt/llvm/bin:$PATH"

3. Edit CMakeLists.txt (in the future it might not be necessary if I won't be too lazy to open a PR for this, also I might fix the sketchy Python versioning)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 327c3e9..b03f26b 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -1,7 +1,7 @@
 cmake_policy(SET CMP0048 NEW)
 project (sc-machine)
 site_name (www.ostis.net)
-cmake_minimum_required (VERSION 2.8)
+cmake_minimum_required (VERSION 3.12)

 set(SC_BIN_PATH "${CMAKE_CURRENT_LIST_DIR}/bin")

@@ -43,18 +43,18 @@ set(SC_KPM_SRC "${SC_MACHINE_ROOT}/sc-kpm")
 set(SC_TOOLS_SRC "${SC_MACHINE_ROOT}/tools")

 if(CMAKE_CXX_COMPILER_ID MATCHES "Clang")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics -std=c++14")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -fcolor-diagnostics -std=c++17")
     set(CMAKE_CXX_FLAGS_RELEASE "-O3")

     if(${SC_AUTO_TEST})
         set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -Wdeprecated-declarations")
     endif()
 elseif(CMAKE_CXX_COMPILER_ID MATCHES "GNU")
-    set(CMAKE_CXX_FLAGS "-std=c++14 -Wall")
+    set(CMAKE_CXX_FLAGS "-std=c++17 -Wall")
     set(CMAKE_CXX_FLAGS_RELEASE "-O3")        ## Optimize
     set(CMAKE_EXE_LINKER_FLAGS_RELEASE "-s")  ## Strip binary
 elseif (NOT CMAKE_CXX_COMPILER_ID MATCHES "MSVC")
-    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++14")
+    set(CMAKE_CXX_FLAGS "${CMAKE_CXX_FLAGS} -std=c++17")
 endif ()

 set(CMAKE_C_FLAGS_DEBUG "${CMAKE_C_FLAGS_DEBUG} -DSC_DEBUG -DSC_PROFILE")
@@ -70,7 +70,7 @@ endif()
 # find dependencies
 if (${APPLE})
     set(Boost_USE_STATIC_LIBS ON)
-    find_package(Boost 1.67 REQUIRED COMPONENTS filesystem python37 program_options)
+    find_package(Boost 1.67 REQUIRED COMPONENTS filesystem python39 program_options system)

     find_package(PkgConfig REQUIRED)
     pkg_search_module(GLIB2 REQUIRED glib-2.0)
@@ -78,11 +78,12 @@ if (${APPLE})

     set (GLIB2_LIBRARIES ${GLIB_LDFLAGS} ${GLIB2_MODULE_LDFLAGS})

-    set (LIBCLANG_LLVM_CONFIG_EXECUTABLE "/usr/local/opt/llvm/bin/llvm-config")
+    set (LIBCLANG_LLVM_CONFIG_EXECUTABLE "/opt/homebrew/opt/llvm/bin/llvm-config")
     find_package(LibClang REQUIRED)

-    find_package(PythonLibs 3.7 REQUIRED)
+    find_package(PythonLibs 3.9 REQUIRED)
     find_package(curl REQUIRED)
+    find_package(RocksDB REQUIRED)

     set (LIBCURL_LIBRARIES ${CURL_LIBRARIES})

     include_directories("${BOOST_PATH}/include"

4. Generate the Makefiles using cmake -B build -DPYTHON_LIBRARY=$(python3-config --prefix)/lib/libpython3.9.dylib -DPYTHON_INCLUDE_DIR=$(python3-config --prefix)/include/python3.9 (note the Python flag, I had to use it because Homebrew's python .dylib isn't discoverable by CMake by default for some reason)
5. Build sc-machine using cmake --build build

I would appreciate any feedback regarding this issue, because I would like to help resolving hiccups with the build system, macOS-specific issues included. A lot was going on on my machine, so I would like to get a review from @deniskoronchik on how sensible these changes are.

[FallenChromium]

Specifically for M1 (or ARM in general?) users: on 0.6.0, you'll have to cherry-pick 07ba428, otherwise you'll get Bus Error and segfaults. @deniskoronchik, it will be incredibly nice if you'll find some time to backport this PR to scp-stable and 0.6.0

[FallenChromium]

Ah, yes: Python agent module crashed the whole program every time I was trying to launch it,

[16:39:07][Info]: Initialize module: /Users/fallenchromium/hell/ostis-0.6.0/sc-machine/bin/extensions/libsc-utils.dylib
[16:39:07][Info]: Initialize module: /Users/fallenchromium/hell/ostis-0.6.0/sc-machine/bin/extensions/libsc-python.dylib
[16:39:07][Info]: [load] Python service http_api/http_api.py
libc++abi: terminating with uncaught exception of type utils::ExceptionItemNotFound: std::exception
./run_sctp.sh: line 4: 21467 Abort trap: 6           ../sc-machine/bin/sctp-server ../config/sc-web.ini

I was pretty fed up with this at the moment, so I simply deleted this extension from the bin/extensions folder. If anyone has clues on why that might happen and how to fix it, it will be nice to resolve this problem.