Support Linux distros & others in build script

This adds Debian, Fedora, Arch and Gentoo to compile when using Linux distros, also supports based with popular Linux operating systems.

Fixed wrong swap of Git pull command vvenc & vvdec, added -p argument for making a directory to avoid error.

- Martin Eesmaa

BuildVVC.sh

@@ -1,12 +1,42 @@
 #!/bin/bash
 OS=$(uname)
+DISTRO=""
+
+# Detect Linux distribution
+if [ "$OS" = "Linux" ]; then
+    if [ -f /etc/os-release ]; then
+        DISTRO=$(awk -F= '/^ID=/{print $2}' /etc/os-release)
+    fi
+fi
+
 echo "Martin Eesmaa / VVC Compiler (vvenc and vvdec)"
-echo "You're running on $OS of bash script version to compile VVC binaries"
+
+if [ "$OS" = "Linux" ]; then
+    echo "You're running on $OS with distribution $DISTRO of bash script version to compile VVC binaries"
+    else
+    echo "You're running on $OS of bash script version to compile VVC binaries"
+fi
+
 echo "Checking and installing required packages..."
 
-setup_linux() {
+setup_debian() {
     sudo apt update && sudo apt upgrade -y
-    sudo apt install build-essential cmake -y
+    sudo apt install build-essential cmake git -y
+}
+
+setup_fedora() {
+    sudo dnf update -y
+    sudo dnf install cmake gcc gcc-c++ make git -y
+}
+
+setup_arch() {
+    sudo pacman -Syu --noconfirm
+    sudo pacman -S --noconfirm base-devel cmake git
+}
+
+setup_gentoo() {
+    sudo emerge --sync
+    sudo emerge cmake git
 }
 
 setup_macos() {
@@ -35,34 +65,53 @@ build_repos() {
     if [ ! -d vvenc ]; then
         git clone --depth=1 https://github.com/fraunhoferhhi/vvenc
     else
-        git pull -C vvenc
+        git -C vvenc pull
     fi
 
     if [ ! -d vvdec ]; then
         git clone --depth=1 https://github.com/fraunhoferhhi/vvdec
     else
-        git pull -C vvdec
+        git -C vvdec pull
     fi
 
     for REPO in vvenc vvdec; do
         cd $REPO
-        mkdir build && cd build
+        mkdir -p build && cd build
         if [ "$OS" = "Darwin" ]; then
+            CORES=$(sysctl -n hw.ncpu || echo 1)
             cmake -DCMAKE_BUILD_TYPE=Release ..
-            cmake --build . -j $(sysctl -n hw.ncpu)
+            cmake --build . -j $CORES
         else
+            CORES=$(nproc || echo 1)
             cmake -DCMAKE_BUILD_TYPE=Release -DCMAKE_EXE_LINKER_FLAGS="-static" ..
-            cmake --build . -j $(nproc)
-    fi
-    cd -
-done
+            cmake --build . -j $CORES
+        fi
+        cd -
+    done
     echo "Please see the build files starting with (vvenc/vvdec)/bin/release-static."
 }
 
 # Main script execution
 case "$OS" in
     Linux)
-        setup_linux
+        case "$DISTRO" in
+            debian|ubuntu)
+                setup_debian
+                ;;
+            fedora)
+                setup_fedora
+                ;;
+            arch)
+                setup_arch
+                ;;
+            gentoo)
+                setup_gentoo
+                ;;
+            *)
+                echo "Unsupported Linux distribution: $DISTRO"
+                exit 1
+                ;;
+        esac
         ;;
     Darwin)
         setup_macos
@@ -82,4 +131,4 @@ case "$OS" in
 esac
 
 build_repos
-read -p "Finished building vvenc & vvdec. Press [Enter] to continue..."
+read -p "Finished building vvenc & vvdec. Press [Enter] to continue..."