[fmt] Build failure on arm64-osx

[dxdw233]

Package: fmt:arm64-osx@11.2.0

Host Environment

• Host: arm64-osx
• Compiler: Clang 21.1.3
• vcpkg-tool version: 2025-07-21-d4b65a2b83ae6c3526acd1c6f3b51aff2a884533
  vcpkg-scripts version: d3d7710 2025-08-19 (5 months ago)

To Reproduce

vcpkg install

Failure logs

-- Using cached fmtlib-fmt-11.2.0.tar.gz
-- Cleaning sources at /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean. Use --editable to skip cleaning for the packages you specify.
-- Extracting source /Users/kaede/vcpkg/downloads/fmtlib-fmt-11.2.0.tar.gz
-- Using source at /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean
-- Found external ninja('1.13.1').
-- Configuring arm64-osx
-- Building arm64-osx-dbg
CMake Error at scripts/cmake/vcpkg_execute_build_process.cmake:134 (message):
    Command failed: /opt/homebrew/bin/cmake --build . --config Debug --target install -- -v -j11
    Working Directory: /Users/kaede/vcpkg/buildtrees/fmt/arm64-osx-dbg
    See logs for more information:
      /Users/kaede/vcpkg/buildtrees/fmt/install-arm64-osx-dbg-out.log

Call Stack (most recent call first):
  /Users/kaede/build/orderbook/build/vcpkg_installed/arm64-osx/share/vcpkg-cmake/vcpkg_cmake_build.cmake:74 (vcpkg_execute_build_process)
  /Users/kaede/build/orderbook/build/vcpkg_installed/arm64-osx/share/vcpkg-cmake/vcpkg_cmake_install.cmake:16 (vcpkg_cmake_build)
  /Users/kaede/.cache/vcpkg/registries/git-trees/ca5dee1adce3bf5b2f190e77927992bacb6d4d48/portfile.cmake:17 (vcpkg_cmake_install)
  scripts/ports.cmake:206 (include)

/Users/kaede/vcpkg/buildtrees/fmt/install-arm64-osx-dbg-out.log

Change Dir: '/Users/kaede/vcpkg/buildtrees/fmt/arm64-osx-dbg'

Run Build Command(s): /opt/homebrew/bin/ninja -v -v -j11 install
[1/4] /opt/homebrew/opt/llvm/bin/clang++  -I/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include -fPIC -g -arch arm64 -fvisibility=hidden -fvisibility-inlines-hidden -MD -MT CMakeFiles/fmt.dir/src/os.cc.o -MF CMakeFiles/fmt.dir/src/os.cc.o.d -o CMakeFiles/fmt.dir/src/os.cc.o -c /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/src/os.cc
FAILED: [code=1] CMakeFiles/fmt.dir/src/os.cc.o 
/opt/homebrew/opt/llvm/bin/clang++  -I/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include -fPIC -g -arch arm64 -fvisibility=hidden -fvisibility-inlines-hidden -MD -MT CMakeFiles/fmt.dir/src/os.cc.o -MF CMakeFiles/fmt.dir/src/os.cc.o.d -o CMakeFiles/fmt.dir/src/os.cc.o -c /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/src/os.cc
In file included from /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/src/os.cc:13:
In file included from /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/os.h:11:
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:747:28: error: use of undeclared identifier 'malloc'
  747 |     T* p = static_cast<T*>(malloc(n * sizeof(T)));
      |                            ^~~~~~
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:752:35: error: use of undeclared identifier 'free'
  752 |   void deallocate(T* p, size_t) { free(p); }
      |                                   ^~~~
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:812:46: note: in instantiation of member function 'fmt::detail::allocator<int>::deallocate' requested here
  812 |     if (old_data != self.store_) self.alloc_.deallocate(old_data, old_capacity);
      |                                              ^
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:821:27: note: in instantiation of member function 'fmt::basic_memory_buffer<int>::grow' requested here
  821 |       : detail::buffer<T>(grow), alloc_(alloc) {
      |                           ^
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:752:35: error: use of undeclared identifier 'free'
  752 |   void deallocate(T* p, size_t) { free(p); }
      |                                   ^~~~
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:812:46: note: in instantiation of member function 'fmt::detail::allocator<char>::deallocate' requested here
  812 |     if (old_data != self.store_) self.alloc_.deallocate(old_data, old_capacity);
      |                                              ^
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:821:27: note: in instantiation of member function 'fmt::basic_memory_buffer<char>::grow' requested here
  821 |       : detail::buffer<T>(grow), alloc_(alloc) {
      |                           ^
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:752:35: error: use of undeclared identifier 'free'
  752 |   void deallocate(T* p, size_t) { free(p); }
      |                                   ^~~~
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:812:46: note: in instantiation of member function 'fmt::detail::allocator<unsigned int>::deallocate' requested here
  812 |     if (old_data != self.store_) self.alloc_.deallocate(old_data, old_capacity);
      |                                              ^
/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include/fmt/format.h:821:27: note: in instantiation of member function 'fmt::basic_memory_buffer<unsigned int, 32>::grow' requested here
  821 |       : detail::buffer<T>(grow), alloc_(alloc) {
      |                           ^
4 errors generated.
[2/4] /opt/homebrew/opt/llvm/bin/clang++  -I/Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/include -fPIC -g -arch arm64 -fvisibility=hidden -fvisibility-inlines-hidden -MD -MT CMakeFiles/fmt.dir/src/format.cc.o -MF CMakeFiles/fmt.dir/src/format.cc.o.d -o CMakeFiles/fmt.dir/src/format.cc.o -c /Users/kaede/vcpkg/buildtrees/fmt/src/11.2.0-c4b53d7675.clean/src/format.cc
ninja: build stopped: subcommand failed.

Additional context

vcpkg.json

{
  "dependencies": [
    "spdlog"
  ]
}

[dg0yt]

/opt/homebrew/opt/llvm/bin/clang++

FTR not using AppleClang, i.e. not the supported triplet.

• vcpkg-tool version: 2025-07-21-d4b65a2b83ae6c3526acd1c6f3b51aff2a884533
  vcpkg-scripts version: d3d7710 2025-08-19 (5 months ago)

Not very old, but might be worth updating.