These changes modernize the CMake build system to (hopefully) match newer best practices
* Library linking is simpler and more automatic because of using imported targets
* Multi-configuration builds should be supported (Ninja Multi-Config, Visual Studio, etc. generators)
* Clean up build options using cmake_dependent_option
* Let CMake do its job in more cases, like finding the math/dl libraries and detecting and enabling LTO support
* Remove platform-specific kludges like the Fedora/flatpak LTO workaround and a bunch of Windows stuff
* Simplify Windows static builds
* Consistent formatting
* use shm_open() instead of memfd_create() on macOS
malloc.h isn't a header on macOS
* Change OpenGL headers + create ifdef for DO_PROCLIST
macOS seems to already have the OpenGL functions defined, without the ifdef, it gives "ambiguous references" errors.
* macOS doesn't have ->gregs in uc_mcontext
and it doesn't have REG_RIP either
https://github.com/gperftools/gperftools/blob/master/m4/pc_from_ucontext.m4
* use getpid() to make memory file name unique
* #ifndef __APPLE__ for AF_PACKET and linux/if_packet.h
* Add include and link directories for macOS and link the OpenGL framework
* Add macOS CI
* Use newly added libslirp package from Homebrew
https://github.com/Homebrew/homebrew-core/pull/63412
* Use Apple's Clang instead of GNU GCC on macOS
* Add macOS build instructions to README
* Try to fix macOS undefined symbol
* snprintf doesn't take null terminator into account
* Map new memory on macOS for JIT
* Only use gcc-ar if using GNU Compiler
* re-add fastmem code - whoops!
* Fix style issue - use camelCase not snake_case
* Set Minimum macOS version
* Switch Minimum OS X version to 10.9
* Add macOS libpcap library name
* fix memory leak
* Fix binding keys in macOS
* Allow getting MAC address on macOS
melonDS on Linux uses AF_PACKET, which doesn't exist on macOS. Instead, this commit uses AF_LINK on macOS to get the MAC address.
* Remove unneeded macOS CI dependencies
* Build melonDS app bundle on macOS
Now it is no longer required to install the libraries on macOS, they come with the app bundle.
* fix macOS CI not being able to find macdeployqt
* copy melonDS.app with recursive because it's a folder
* Disable fastmem checkbox on macOS
* Disable fastmem by default in config
* forgot a semicolon
* Don't bundle libraries, causes issues on macOS <10.15
* Update README + allow finding version in Finder on macOS
* Make sure fastmem checkbox stays uncheckable
* CMake build fixups
* Correctly set C/C++ standard
* Specify CXX in project() to get things set up right, also causes it to
link using the C++ compiler which is necessary for LTO builds with Clang
to work right
* Remove Fedora/flatpak build workaround, no longer needed with C++ standard set
* Link libm explicitly if we need to
* Specify -fuse-linker-plugin when building with LTO just in case
* Restore CMAKE_{C,CXX}_STANDRD, oops
* Use C++17
