Build fails in macOS Ventura

[ghmanoj]

Operating System

MacOS

What's the issue you encountered?

CMake is identifying the compiler as AppleClang causing the build to fail.

CMake Error at cmake/build_helpers.cmake:339 (message): ImHex can only be compiled with GCC or Clang. AppleClang is not supported. Call Stack (most recent call first): CMakeLists.txt:28 (verifyCompiler)

How can the issue be reproduced?

Build fails when compiling in macOS Ventura.
$ mkdir _build && cd _build
$ cmake ..

ImHex Version

master

ImHex Build Type

• Nightly or built from sources

Installation type

From Git Clone

Additional context?

Last commit hash 434ced4

[WerWolv]

As mentioned in #911, Apple's clang is multiple versions outdated and doesn't support many of the latest C++ features ImHex is using. GCC can however be installed on macOS through homebrew which is able to compile ImHex successfully.

[gtackett]

As mentioned in #911, Apple's clang is multiple versions outdated and doesn't support many of the latest C++ features ImHex is using. GCC can however be installed on macOS through homebrew which is able to compile ImHex successfully.

Hmm. My problem seems to be similar to that of @ghmanoj, although I'm trying to build on Big Sur, and I do have gcc et al. installed through homebrew. I followed the MacOS build instructions at (https://github.com/WerWolv/ImHex/tree/master/dist/compiling/macos.md). CMake is nevertheless identifying the compiler as AppleClang causing the build to fail.

1. Cloned the repo using git clone https://github.com/WerWolv/ImHex --recurse-submodules
2. Installed all the dependencies using brew bundle --no-lock --file dist/Brewfile
3. Tried to build ImHex itself using the following commands:
   cd ImHex
   mkdir -p build
   cd build
   CC=$(brew --prefix llvm)/bin/clang
   CXX=$(brew --prefix llvm)/bin/clang++
   OBJC=$(brew --prefix llvm)/bin/clang
   OBJCXX=$(brew --prefix llvm)/bin/clang++
   cmake -G "Ninja"
   -DCMAKE_BUILD_TYPE=Release
   -DCMAKE_INSTALL_PREFIX="./install"
   -DIMHEX_GENERATE_PACKAGE=ON
   ..
   ninja install
   -- Configuring ImHex v1.33.0
   CMake Error at cmake/build_helpers.cmake:421 (message):
   ImHex can only be compiled with GCC or Clang. AppleClang is not supported.
   Call Stack (most recent call first):
   CMakeLists.txt:49 (verifyCompiler)

And yet:

$(brew --prefix llvm)/bin/clang --version
Homebrew clang version 18.1.4
Target: x86_64-apple-darwin20.6.0
Thread model: posix
InstalledDir: /usr/local/opt/llvm/bin

So it would appear that cmake is somehow mis-detecting the version of clang.

Just to be thorough:

$ which cmake
/usr/local/bin/cmake
$ cmake --version
cmake version 3.29.2
CMake suite maintained and supported by Kitware (kitware.com/cmake).

[gtackett]

I wonder if this post on stackoverflow explains the problem?

[gtackett]

I just needed to rm CMakeCache.txt.