Use LLVM 18 and gcc 14

.github/workflows/build.yml

@@ -66,8 +66,7 @@ jobs:
           $CHROOT sudo add-apt-repository ppa:savoury1/build-tools
           $CHROOT sudo add-apt-repository ppa:ubuntu-toolchain-r/test
           $CHROOT sudo apt-get update
-          DEBIAN_FRONTEND=noninteractive $CHROOT sudo apt-get -y --no-install-recommends install libgl-dev libasound2-dev libpulse-dev curl nasm meson ninja-build libffi-dev gcc-11 g++-11
-          $CHROOT sudo update-alternatives --install /usr/bin/gcc gcc /usr/bin/gcc-11 100 --slave /usr/bin/g++ g++ /usr/bin/g++-11 --slave /usr/bin/gcov gcov /usr/bin/gcov-11
+          DEBIAN_FRONTEND=noninteractive $CHROOT sudo apt-get -y --no-install-recommends install libgl-dev libasound2-dev libpulse-dev curl nasm meson ninja-build libffi-dev
 
       - name: Build zlib
         run: |

platforms/Linux.sh

@@ -1,3 +1,11 @@
 #!/bin/bash
+sudo update-alternatives --remove-all gcc
+sudo update-alternatives --remove-all g++
+sudo update-alternatives --remove-all gcov
+
+GCC_VERSION=14.1.0
+curl -L "https://github.com/legacyclonk/gcc-build/releases/download/$GCC_VERSION/gcc-$GCC_VERSION.tar.zst" | sudo tar -x --zstd -C /
+
+echo "CMAKE_CONFIGURE_ARGS=$CMAKE_CONFIGURE_ARGS -DCMAKE_TOOLCHAIN_FILE=$PWD/platforms/gcc14_20.04.cmake" >> $GITHUB_ENV
 echo "MAKE_CMD=make -j$(nproc)" >> $GITHUB_ENV
 echo "MESON_CONFIGURE_ARGS=-Ddefault_library=static" >> $GITHUB_ENV

platforms/Mac.sh

@@ -1,5 +1,10 @@
 #!/bin/bash
-echo "CMAKE_CONFIGURE_ARGS=$CMAKE_CONFIGURE_ARGS -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9" >> $GITHUB_ENV
+export HOMEBREW_NO_INSTALL_CLEANUP=1
+export HOMEBREW_NO_INSTALLED_DEPENDENTS_CHECK=1
+brew update
+brew install llvm@18 ninja
+
+echo "CMAKE_CONFIGURE_ARGS=$CMAKE_CONFIGURE_ARGS -DCMAKE_OSX_DEPLOYMENT_TARGET=10.9 -DCMAKE_TOOLCHAIN_FILE=$PWD/platforms/clang16_mac.cmake" >> $GITHUB_ENV
 echo "MAKE_CMD=make -j$(sysctl -n hw.logicalcpu)" >> $GITHUB_ENV
 echo "LINK_FLAGS=-mmacosx-version-min=10.9" >> $GITHUB_ENV
 echo "C_XX_FLAGS=-mmacosx-version-min=10.9" >> $GITHUB_ENV

platforms/clang16_mac.cmake

@@ -0,0 +1,10 @@
+cmake_minimum_required(VERSION 3.20)
+set(CMAKE_C_COMPILER "/usr/local/opt/llvm/bin/clang")
+set(CMAKE_CXX_COMPILER "/usr/local/opt/llvm/bin/clang++")
+
+set(CMAKE_C_FLAGS_INIT "-fexperimental-library -Wno-parentheses")
+set(CMAKE_CXX_FLAGS_INIT "-stdlib=libc++ {CMAKE_C_FLAGS_INIT}")
+set(CMAKE_OBJCXX_FLAGS_INIT "${CMAKE_CXX_FLAGS_INIT}")
+
+set(CMAKE_EXE_LINKER_FLAGS_INIT "-L/usr/local/opt/llvm/lib/c++")
+set(CMAKE_SHARED_LINKER_FLAGS_INIT "-L/usr/local/opt/llvm/lib/c++")

platforms/gcc14_20.04.cmake

@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.20)
+set(CMAKE_C_COMPILER x86_64-linux-gnu-x86_64-linux-gnu-gcc-14)
+set(CMAKE_CXX_COMPILER x86_64-linux-gnu-x86_64-linux-gnu-g++-14)
+
+set(CMAKE_C_FLAGS_INIT "-static-libgcc")
+set(CMAKE_CXX_FLAGS_INIT "-static-libgcc -static-libstdc++")
+set(CMAKE_EXE_LINKER_FLAGS_INIT "-static-libgcc -static-libstdc++")