`make` fails on macOS 10.14.6 (Mojave)

[jobatabs]

Hi, thanks for making this software! Really seems like just what I've been looking for.

I tried building just a moment ago according to README. g++ --version outputs:

Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 11.0.0 (clang-1100.0.33.17)
Target: x86_64-apple-darwin18.7.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin

I have installed libpng and libomp and they are both latest available version.

cmake was not installed on my system, so I brew install cmake

And then cmake .

I then tried make -j but received numerous errors, so I went back and read if cmake had said anything notable.

Output of cmake .

-- The CXX compiler identification is AppleClang 11.0.0.11000033
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_CXX: -Xclang -fopenmp (found version "3.1") 
-- Found OpenMP: TRUE (found version "3.1")  
-- Found ZLIB: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/lib/libz.tbd (found version "1.2.11") 
-- Found PNG: /usr/local/lib/libpng.dylib (found version "1.6.37") 
-- Could NOT find GTest (missing: GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY) 
-- Could NOT find QT (missing: QT_DIR)
CMake Warning (dev) at CMakeLists.txt:20 (FIND_PACKAGE):
  Policy CMP0084 is not set: The FindQt module does not exist for
  find_package().  Run "cmake --help-policy CMP0084" for policy details.  Use
  the cmake_policy command to set the policy and suppress this warning.

This warning is for project developers.  Use -Wno-dev to suppress it.

-- Could NOT find Qt3 (missing: QT_QT_LIBRARY QT_INCLUDE_DIR QT_MOC_EXECUTABLE) 
CMake was unable to find desired Qt version: 3. Set advanced values QT_QMAKE_EXECUTABLE and QT3_QGLOBAL_H_FILE.
-- Configuring done
-- Generating done
-- Build files have been written to: /path/to/mcmap

So suspecting that missing qt was the issue, I once again brew install qt. I could not find GTest on brew but decided not to worry about it for now.

Then onto make -j.

I received the same kinds of errors, over and over again from multiple files.

mcmap/src/./canvas.h:168:51: error: 'path' is
      unavailable: introduced in macOS 10.15

mcmap/src/include/nbt/parser.hpp:329:53: error: 
      'string' is unavailable: introduced in macOS 10.15

So it seems the code is only playing nice with macOS 10.15, which is a shame. Upgrading to Catalina is untenable for me. Is there a possibility of an "easy fix" or is this the state of affairs for now? It would be good to mention in the README, as many people are running 10.14.

[spoutn1k]

Hey ! Thanks, but it will be more useful for you when it will work :)

You are right in not worrying about gtest, it and qt are not required to build the CLI (more stable) version of mcmap. Sounds like a standard (version) issue. Apple ships clang disguised as gcc that may not support the C++17 standard I used in the program.

I can think of a few options:

• I found this link that says you can select a target in XCode to enable support.
• The above answer also states, and that would be my go-to, that you could brew install a version of gcc/g++ and compile with it. Set CXX accordingly before the cmake configuration.

The build succeded with both compilers on macOS tests, but I never encountered your issue.

Please let me know if that helped !

[jobatabs]

Hi, I in fact noticed today I already have a Homebrew-managed version of g++,g++-10. But unfortunately doing CXX=g++-10 make still produces the same errors. This also happens with absolute path CXX=/usr/local/bin/g++-10 make.

[jobatabs]

From man clang:

The default C++ language standard is gnu++14.

But c++17 and gnu++17 are both supported with -std=<std>. Can the Makefile be changed to specify a standard for the clang compiler?

[spoutn1k]

Yes but the important step is that CMake sees it. It selected the clang version:

-- Check for working CXX compiler: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin/c++ - skipped

The CMake configuration already has the C++17 standard set required, and it generates the Makefile tailored to the system it runs on. I do not not write the Makefile anymore, as CMake is supposed to handle this sort of things.

And standard support is a subjective thing. GCC 8-9 have C++17 support but do not understand <filesystem> which is from C++17.

[jobatabs]

Okay, I rm -rf mcmap/ and started from a clean clone. One CXX=g++-10 cmake . and CXX=g++-10 make -j later, I received another failure, but with different errors.

$ CXX=g++-10 make -j
[  8%] Built target format
[ 20%] Built target regionReader
[ 24%] Built target extractChunk
[ 28%] Building CXX object scripts/CMakeFiles/nbt2json.dir/nbt2json.cpp.o
[ 36%] Built target json2bson
[ 40%] Generating colors.bson
Scanning dependencies of target mcmap_core
[ 44%] Building CXX object src/CMakeFiles/mcmap_core.dir/block_drawers.cpp.o
[ 48%] Building CXX object src/CMakeFiles/mcmap_core.dir/chunk.cpp.o
[ 52%] Building CXX object src/CMakeFiles/mcmap_core.dir/canvas.cpp.o
[ 56%] Building CXX object src/CMakeFiles/mcmap_core.dir/colors.cpp.o
[ 60%] Building CXX object src/CMakeFiles/mcmap_core.dir/helper.cpp.o
[ 64%] Building CXX object src/CMakeFiles/mcmap_core.dir/mcmap.cpp.o
[ 68%] Building CXX object src/CMakeFiles/mcmap_core.dir/png.cpp.o
[ 76%] Building CXX object src/CMakeFiles/mcmap_core.dir/savefile.cpp.o
[ 72%] Building CXX object src/CMakeFiles/mcmap_core.dir/section.cpp.o
[ 80%] Building CXX object src/CMakeFiles/mcmap_core.dir/settings.cpp.o
[ 84%] Building CXX object src/CMakeFiles/mcmap_core.dir/worldloader.cpp.o
In file included from /Users/jonatannoponen/Downloads/mcmap/src/include/nbt/parser.hpp:6,
                 from /Users/jonatannoponen/Downloads/mcmap/scripts/nbt2json.cpp:4:
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp: In instantiation of 'constexpr PointerType nbt::NBT::get_ptr() const [with PointerType = const std::vector<long int>*; typename std::enable_if<(std::is_pointer<_Tp>::value && std::is_const<typename std::remove_pointer<_Tp>::type>::value), int>::type <anonymous> = 0]':
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:815:32:   required from 'constexpr decltype (((const nbt::NBT*)this)->get_ptr<PointerType>()) nbt::NBT::get() const [with PointerType = const std::vector<long int>*; typename std::enable_if<std::is_pointer<_Tp>::value, int>::type <anonymous> = 0; decltype (((const nbt::NBT*)this)->get_ptr<PointerType>()) = const std::vector<long int>*]'
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/to_json.hpp:57:67:   required from here
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:801:24: error: no matching function for call to 'nbt::NBT::get_impl_ptr(const std::vector<long int>*) const'
  801 |     return get_impl_ptr(static_cast<PointerType>(nullptr));
      |            ~~~~~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:671:15: note: candidate: 'nbt::NBT::tag_byte_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_byte_t*)'
  671 |   tag_byte_t *get_impl_ptr(tag_byte_t *) noexcept {
      |               ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:671:28: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_byte_t*' {aka 'signed char*'}
  671 |   tag_byte_t *get_impl_ptr(tag_byte_t *) noexcept {
      |                            ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:675:31: note: candidate: 'constexpr const tag_byte_t* nbt::NBT::get_impl_ptr(const tag_byte_t*) const'
  675 |   constexpr const tag_byte_t *get_impl_ptr(const tag_byte_t *) const noexcept {
      |                               ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:675:44: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_byte_t*' {aka 'const signed char*'}
  675 |   constexpr const tag_byte_t *get_impl_ptr(const tag_byte_t *) const noexcept {
      |                                            ^~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:680:16: note: candidate: 'nbt::NBT::tag_short_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_short_t*)'
  680 |   tag_short_t *get_impl_ptr(tag_short_t *) noexcept {
      |                ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:680:29: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_short_t*' {aka 'short int*'}
  680 |   tag_short_t *get_impl_ptr(tag_short_t *) noexcept {
      |                             ^~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:685:3: note: candidate: 'constexpr const tag_short_t* nbt::NBT::get_impl_ptr(const tag_short_t*) const'
  685 |   get_impl_ptr(const tag_short_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:685:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_short_t*' {aka 'const short int*'}
  685 |   get_impl_ptr(const tag_short_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:690:14: note: candidate: 'nbt::NBT::tag_int_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_int_t*)'
  690 |   tag_int_t *get_impl_ptr(tag_int_t *) noexcept {
      |              ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:690:27: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_int_t*' {aka 'int*'}
  690 |   tag_int_t *get_impl_ptr(tag_int_t *) noexcept {
      |                           ^~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:694:30: note: candidate: 'constexpr const tag_int_t* nbt::NBT::get_impl_ptr(const tag_int_t*) const'
  694 |   constexpr const tag_int_t *get_impl_ptr(const tag_int_t *) const noexcept {
      |                              ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:694:43: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_int_t*' {aka 'const int*'}
  694 |   constexpr const tag_int_t *get_impl_ptr(const tag_int_t *) const noexcept {
      |                                           ^~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:699:15: note: candidate: 'nbt::NBT::tag_long_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_long_t*)'
  699 |   tag_long_t *get_impl_ptr(tag_long_t *) noexcept {
      |               ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:699:28: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_long_t*' {aka 'long long int*'}
  699 |   tag_long_t *get_impl_ptr(tag_long_t *) noexcept {
      |                            ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:703:31: note: candidate: 'constexpr const tag_long_t* nbt::NBT::get_impl_ptr(const tag_long_t*) const'
  703 |   constexpr const tag_long_t *get_impl_ptr(const tag_long_t *) const noexcept {
      |                               ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:703:44: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_long_t*' {aka 'const long long int*'}
  703 |   constexpr const tag_long_t *get_impl_ptr(const tag_long_t *) const noexcept {
      |                                            ^~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:708:16: note: candidate: 'nbt::NBT::tag_float_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_float_t*)'
  708 |   tag_float_t *get_impl_ptr(tag_float_t *) noexcept {
      |                ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:708:29: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_float_t*' {aka 'float*'}
  708 |   tag_float_t *get_impl_ptr(tag_float_t *) noexcept {
      |                             ^~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:713:3: note: candidate: 'constexpr const tag_float_t* nbt::NBT::get_impl_ptr(const tag_float_t*) const'
  713 |   get_impl_ptr(const tag_float_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:713:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_float_t*' {aka 'const float*'}
  713 |   get_impl_ptr(const tag_float_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:718:17: note: candidate: 'nbt::NBT::tag_double_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_double_t*)'
  718 |   tag_double_t *get_impl_ptr(tag_double_t *) noexcept {
      |                 ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:718:30: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_double_t*' {aka 'double*'}
  718 |   tag_double_t *get_impl_ptr(tag_double_t *) noexcept {
      |                              ^~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:723:3: note: candidate: 'constexpr const tag_double_t* nbt::NBT::get_impl_ptr(const tag_double_t*) const'
  723 |   get_impl_ptr(const tag_double_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:723:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_double_t*' {aka 'const double*'}
  723 |   get_impl_ptr(const tag_double_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:728:21: note: candidate: 'nbt::NBT::tag_byte_array_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_byte_array_t*)'
  728 |   tag_byte_array_t *get_impl_ptr(tag_byte_array_t *) noexcept {
      |                     ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:728:34: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_byte_array_t*' {aka 'std::vector<signed char>*'}
  728 |   tag_byte_array_t *get_impl_ptr(tag_byte_array_t *) noexcept {
      |                                  ^~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:733:3: note: candidate: 'constexpr const tag_byte_array_t* nbt::NBT::get_impl_ptr(const tag_byte_array_t*) const'
  733 |   get_impl_ptr(const tag_byte_array_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:733:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_byte_array_t*' {aka 'const std::vector<signed char>*'}
  733 |   get_impl_ptr(const tag_byte_array_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:738:17: note: candidate: 'nbt::NBT::tag_string_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_string_t*)'
  738 |   tag_string_t *get_impl_ptr(tag_string_t *) noexcept {
      |                 ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:738:30: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_string_t*' {aka 'std::__cxx11::basic_string<char>*'}
  738 |   tag_string_t *get_impl_ptr(tag_string_t *) noexcept {
      |                              ^~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:743:3: note: candidate: 'constexpr const tag_string_t* nbt::NBT::get_impl_ptr(const tag_string_t*) const'
  743 |   get_impl_ptr(const tag_string_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:743:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_string_t*' {aka 'const std::__cxx11::basic_string<char>*'}
  743 |   get_impl_ptr(const tag_string_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:748:15: note: candidate: 'nbt::NBT::tag_list_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_list_t*)'
  748 |   tag_list_t *get_impl_ptr(tag_list_t *) noexcept {
      |               ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:748:28: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_list_t*' {aka 'std::vector<nbt::NBT>*'}
  748 |   tag_list_t *get_impl_ptr(tag_list_t *) noexcept {
      |                            ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:752:31: note: candidate: 'constexpr const tag_list_t* nbt::NBT::get_impl_ptr(const tag_list_t*) const'
  752 |   constexpr const tag_list_t *get_impl_ptr(const tag_list_t *) const noexcept {
      |                               ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:752:44: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_list_t*' {aka 'const std::vector<nbt::NBT>*'}
  752 |   constexpr const tag_list_t *get_impl_ptr(const tag_list_t *) const noexcept {
      |                                            ^~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:757:19: note: candidate: 'nbt::NBT::tag_compound_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_compound_t*)'
  757 |   tag_compound_t *get_impl_ptr(tag_compound_t *) noexcept {
      |                   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:757:32: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_compound_t*' {aka 'std::map<std::__cxx11::basic_string<char>, nbt::NBT>*'}
  757 |   tag_compound_t *get_impl_ptr(tag_compound_t *) noexcept {
      |                                ^~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:762:3: note: candidate: 'constexpr const tag_compound_t* nbt::NBT::get_impl_ptr(const tag_compound_t*) const'
  762 |   get_impl_ptr(const tag_compound_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:762:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_compound_t*' {aka 'const std::map<std::__cxx11::basic_string<char>, nbt::NBT>*'}
  762 |   get_impl_ptr(const tag_compound_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:767:20: note: candidate: 'nbt::NBT::tag_int_array_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_int_array_t*)'
  767 |   tag_int_array_t *get_impl_ptr(tag_int_array_t *) noexcept {
      |                    ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:767:33: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_int_array_t*' {aka 'std::vector<int>*'}
  767 |   tag_int_array_t *get_impl_ptr(tag_int_array_t *) noexcept {
      |                                 ^~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:772:3: note: candidate: 'constexpr const tag_int_array_t* nbt::NBT::get_impl_ptr(const tag_int_array_t*) const'
  772 |   get_impl_ptr(const tag_int_array_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:772:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_int_array_t*' {aka 'const std::vector<int>*'}
  772 |   get_impl_ptr(const tag_int_array_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:777:21: note: candidate: 'nbt::NBT::tag_long_array_t* nbt::NBT::get_impl_ptr(nbt::NBT::tag_long_array_t*)'
  777 |   tag_long_array_t *get_impl_ptr(tag_long_array_t *) noexcept {
      |                     ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:777:34: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'nbt::NBT::tag_long_array_t*' {aka 'std::vector<long long int>*'}
  777 |   tag_long_array_t *get_impl_ptr(tag_long_array_t *) noexcept {
      |                                  ^~~~~~~~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:782:3: note: candidate: 'constexpr const tag_long_array_t* nbt::NBT::get_impl_ptr(const tag_long_array_t*) const'
  782 |   get_impl_ptr(const tag_long_array_t *) const noexcept {
      |   ^~~~~~~~~~~~
/Users/jonatannoponen/Downloads/mcmap/src/include/nbt/nbt.hpp:782:16: note:   no known conversion for argument 1 from 'const std::vector<long int>*' to 'const tag_long_array_t*' {aka 'const std::vector<long long int>*'}
  782 |   get_impl_ptr(const tag_long_array_t *) const noexcept {
      |                ^~~~~~~~~~~~~~~~~~~~~~~~
make[2]: *** [scripts/CMakeFiles/nbt2json.dir/nbt2json.cpp.o] Error 1
make[1]: *** [scripts/CMakeFiles/nbt2json.dir/all] Error 2
make[1]: *** Waiting for unfinished jobs....
[ 88%] Linking CXX static library libmcmap_core.a
[ 88%] Built target mcmap_core
make: *** [all] Error 2

[jobatabs]

And here the previous cmake, which seems succesful now.

$ CXX=g++-10 cmake .
-- The CXX compiler identification is GNU 10.2.0
-- Checking whether CXX compiler has -isysroot
-- Checking whether CXX compiler has -isysroot - yes
-- Checking whether CXX compiler supports OSX deployment target flag
-- Checking whether CXX compiler supports OSX deployment target flag - yes
-- Detecting CXX compiler ABI info
-- Detecting CXX compiler ABI info - done
-- Check for working CXX compiler: /usr/local/bin/g++-10 - skipped
-- Detecting CXX compile features
-- Detecting CXX compile features - done
-- Found OpenMP_CXX: -fopenmp (found version "4.5") 
-- Found OpenMP: TRUE (found version "4.5")  
-- Found ZLIB: /Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX10.15.sdk/usr/lib/libz.tbd (found version "1.2.11") 
-- Found PNG: /usr/local/lib/libpng.dylib (found version "1.6.37") 
-- Could NOT find GTest (missing: GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY) 
-- Could NOT find QT (missing: QT_DIR)
CMake Warning (dev) at CMakeLists.txt:20 (FIND_PACKAGE):
  Policy CMP0084 is not set: The FindQt module does not exist for
  find_package().  Run "cmake --help-policy CMP0084" for policy details.  Use
  the cmake_policy command to set the policy and suppress this warning.

This warning is for project developers.  Use -Wno-dev to suppress it.

-- Could NOT find Qt3 (missing: QT_QT_LIBRARY QT_INCLUDE_DIR QT_MOC_EXECUTABLE) 
CMake was unable to find desired Qt version: 3. Set advanced values QT_QMAKE_EXECUTABLE and QT3_QGLOBAL_H_FILE.
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/jonatannoponen/Downloads/mcmap

[jobatabs]

Sorry, I had apparently missed this part from your original response:

Set CXX accordingly before the cmake configuration.

[spoutn1k]

I've seen that error before on MSVC compilers. Weird. I've created a new branch, called JSONPatch. It should fix it hopefully.

[spoutn1k]

The last errors from the thread have been resolved on MSVC. Hopefully the program compiles on macOS with the appropriate compiler. Closing old issue.