Meta: Update gcc version requirement to 13+

The project can no longer be compiled with gcc-12.

Documentation/BuildInstructions.md

@@ -11,12 +11,13 @@ sudo apt install build-essential cmake curl libmpfr-dev libmpc-dev libgmp-dev e2
 ```
 Optional: `fuse2fs` for [building images without root](https://github.com/SerenityOS/serenity/pull/11224).
 
-#### GCC 12 or Clang 17
+#### GCC 13 or Clang 17
 
-A host compiler that supports C++23 features is required for building host tools, the newer the better. Tested versions include gcc-12 and clang-17.
+A host compiler that supports C++23 features is required for building host tools, the newer the better. Tested versions include gcc-13 and clang-17.
 
-On Ubuntu gcc-12 is available in the repositories of 22.04 (Jammy) and later.
+On Ubuntu gcc-13 is available in the repositories of 24.04 (Noble) and later.
-If you are running an older version, you will either need to upgrade, or find an alternative installation source.
+If you are running an older version, you will either need to upgrade, or find an alternative installation source
+(i.e. from the [ubuntu-toolchain-r/test PPA](https://launchpad.net/~ubuntu-toolchain-r/+archive/ubuntu/test)).
 
 Next, update your local package information from this repository:
 
@@ -24,10 +25,10 @@ Next, update your local package information from this repository:
 sudo apt update
 ```
 
-Now on Ubuntu or Debian you can install gcc-12 with apt like this:
+Now on Ubuntu or Debian you can install gcc-13 with apt like this:
 
 ```console
-sudo apt install gcc-12 g++-12
+sudo apt install gcc-13 g++-13
 ```
 
 #### QEMU 6.2 or later

Documentation/BuildInstructionsLadybird.md

@@ -2,7 +2,7 @@
 
 ## Build Prerequisites
 
-Qt6 development packages and a C++23 capable compiler are required. g++-12 or clang-17 are required at a minimum for c++23 support.
+Qt6 development packages and a C++23 capable compiler are required. g++-13 or clang-17 are required at a minimum for c++23 support.
 
 NOTE: In all of the below lists of packages, the Qt6 multimedia package is not needed if your Linux system supports PulseAudio.
 
@@ -147,7 +147,7 @@ The install rules in Ladybird/cmake/InstallRules.cmake define which binaries and
 installed into the configured CMAKE_PREFIX_PATH or path passed to ``cmake --install``.
 
 Note that when using a custom build directory rather than Meta/serenity.sh, the user may need to provide
-a suitable C++ compiler (g++ >= 12, clang >= 14, Apple Clang >= 14.3) via the CMAKE_CXX_COMPILER and
+a suitable C++ compiler (g++ >= 13, clang >= 14, Apple Clang >= 14.3) via the CMAKE_CXX_COMPILER and
 CMAKE_C_COMPILER cmake options.
 
 ```

Meta/find_compiler.sh

@@ -22,7 +22,7 @@ is_supported_compiler() {
         [ "$MAJOR_VERSION" -ge 17 ] && return 0
     else
         # GCC version check
-        [ "$MAJOR_VERSION" -ge 12 ] && return 0
+        [ "$MAJOR_VERSION" -ge 13 ] && return 0
     fi
     return 1
 }
@@ -63,7 +63,7 @@ pick_host_compiler() {
         return
     fi
 
-    find_newest_compiler egcc gcc gcc-12 gcc-13 gcc-14 /usr/local/bin/gcc-{12,13,14} /opt/homebrew/bin/gcc-{12,13,14}
+    find_newest_compiler egcc gcc gcc-13 gcc-14 /usr/local/bin/gcc-{13,14} /opt/homebrew/bin/gcc-{13,14}
     if is_supported_compiler "$HOST_COMPILER"; then
         export CC="${HOST_COMPILER}"
         export CXX="${HOST_COMPILER/gcc/g++}"
@@ -73,6 +73,6 @@ pick_host_compiler() {
     if [ "$(uname -s)" = "Darwin" ]; then
         die "Please make sure that Xcode 14.3, Homebrew Clang 17, or higher is installed."
     else
-        die "Please make sure that GCC version 12, Clang version 17, or higher is installed."
+        die "Please make sure that GCC version 13, Clang version 17, or higher is installed."
     fi
 }