fedora-mesa-git-interactive-installer.sh

#!/usr/bin/env bash
set -e

echo "============================================================"
echo " Bleeding-Edge Mesa Installer (Fedora)"
echo "============================================================"
echo
echo "This script will build Mesa from source and install it into:"
echo "  /opt/mesa-git"
echo
echo "Your system Mesa packages will NOT be replaced."
echo "For transparency, this is AI slop, based on https://gist.github.com/craimasjien/4519283aa2c170b93aff00b9f75aa7bf"
echo

# -----------------------------
# Step 1: Ask clone location
# -----------------------------
read -rp "Where should the Mesa repository be located? (e.g. ~/dev/mesa): " MESA_DIR
MESA_DIR=$(eval echo "$MESA_DIR")

echo
echo "Using Mesa directory: $MESA_DIR"
echo

# -----------------------------
# Step 2: Install build deps
# -----------------------------
echo "Installing Mesa build dependencies via dnf..."
echo "You may be prompted for your sudo password."
echo
sudo dnf builddep mesa -y
echo

# -----------------------------
# Step 3: Clone or update Mesa
# -----------------------------
if [[ -d "$MESA_DIR/.git" ]]; then
    echo "Mesa repository already exists."
    echo "Fetching latest changes..."
    cd "$MESA_DIR"
    git fetch --tags
else
    echo "Cloning Mesa repository..."
    git clone https://gitlab.freedesktop.org/mesa/mesa.git "$MESA_DIR"
    cd "$MESA_DIR"
fi
echo

# -----------------------------
# Step 4: Show latest tags
# -----------------------------
echo "Latest 5 Mesa tags:"
echo "-------------------"
git tag --sort=-creatordate | head -n 5
echo
read -rp "Enter the Mesa tag you want to use (e.g. mesa-25.3.3): " MESA_TAG

echo
echo "Checking out Mesa version: $MESA_TAG"
git checkout "$MESA_TAG"
echo

# -----------------------------
# Step 5: Vulkan driver choice
# -----------------------------
echo "Select Vulkan driver to build:"
echo "  1) amd"
echo "  2) intel"
echo "  3) nouveau"
echo "  4) swrast"
echo "  5) auto"
echo "  6) all"
echo
read -rp "Enter choice [1-6]: " VK_CHOICE

case "$VK_CHOICE" in
    1) VK_DRIVER="amd" ;;
    2) VK_DRIVER="intel" ;;
    3) VK_DRIVER="nouveau" ;;
    4) VK_DRIVER="swrast" ;;
    5) VK_DRIVER="auto" ;;
    6) VK_DRIVER="all" ;;
    *) echo "Invalid choice"; exit 1 ;;
esac

echo
echo "Using Vulkan driver(s): $VK_DRIVER"
echo

# -----------------------------
# Step 6: Configure build
# -----------------------------
echo "Configuring Mesa build with Meson..."
echo

meson setup build/ \
    -Dprefix=/opt/mesa-git \
    -Dplatforms=x11,wayland \
    -Dvulkan-drivers="$VK_DRIVER" \
    -Dvideo-codecs=h264dec,h264enc,h265dec,h265enc,vc1dec,av1dec,av1enc,vp9dec

echo
echo "Building Mesa (this may take a while)..."
echo

meson compile -C build/
echo

# -----------------------------
# Step 7: Install Mesa
# -----------------------------
echo "Installing Mesa into /opt/mesa-git..."
echo "This requires sudo."
echo
sudo meson install -C build/
echo

# -----------------------------
# Step 8: Vulkan ICD selection
# -----------------------------
echo "Available Vulkan ICD files:"
echo
ls /opt/mesa-git/share/vulkan/icd.d/
echo
read -rp "Enter the Vulkan ICD filename to use (exact name): " VK_ICD

VK_ICD_PATH="/opt/mesa-git/share/vulkan/icd.d/$VK_ICD"

if [[ ! -f "$VK_ICD_PATH" ]]; then
    echo "ERROR: Selected ICD file does not exist."
    exit 1
fi

# -----------------------------
# Step 9: System-wide or session-only
# -----------------------------
echo
echo "Mesa installation complete."
echo
read -rp "Apply this Mesa version system-wide? (y/N): " APPLY_SYSTEM

if [[ "$APPLY_SYSTEM" =~ ^[Yy]$ ]]; then
    echo
    echo "Applying system-wide environment configuration..."
    echo "Backing up /etc/environment to /etc/environment.bak"
    echo

    sudo cp /etc/environment /etc/environment.bak

    sudo bash -c "cat > /etc/environment <<EOF
LD_LIBRARY_PATH=\"/opt/mesa-git/lib64\"
OCL_ICD_VENDORS=\"/opt/mesa-git/etc/OpenCL/vendors\"
VK_DRIVER_FILES=\"$VK_ICD_PATH\"
LIBVA_DRIVERS_PATH=\"/opt/mesa-git/lib64/dri\"
EOF"

    echo
    echo "System-wide configuration applied."
    echo "Reboot will be required to take effect."
else
    echo
    echo "System-wide changes NOT applied."
    echo
    echo "To use Mesa in your current session, run:"
    echo
    echo "export LD_LIBRARY_PATH=\"/opt/mesa-git/lib64:\$LD_LIBRARY_PATH\""
    echo "export OCL_ICD_VENDORS=\"/opt/mesa-git/etc/OpenCL/vendors\""
    echo "export VK_DRIVER_FILES=\"$VK_ICD_PATH\""
    echo "export LIBVA_DRIVERS_PATH=\"/opt/mesa-git/lib64/dri\""
fi

echo
echo "============================================================"
echo " Installation Finished"
echo "============================================================"
echo
echo "Test with:"
echo "  vulkaninfo | grep \"Vulkan Instance Version\""
echo "  glxinfo | grep \"OpenGL version\""
echo