git-dolphin.sh - Easily download, build and install latest dolphin emulator master from Github

git-dolphin.sh

#!/bin/bash
# git-dolphin.sh
# Easily download, build and install latest dolphin emulator master from Github
# Created 2023-05-27 - updated 2024-01-30
# Written for Siduction (Debian sid based distro)
# By dpanter https://gist.github.com/dpanter
# make install requires elevated privileges

PROJECT="dolphin"
RUNDATE="`date +%Y%m%d`"
COMMIT="`curl -v --silent https://github.com/dolphin-emu/dolphin/commits/master 2>&1 | grep -m 1 'href="/dolphin-emu/dolphin/commit/' | awk -F"/commit/" '{print $2}' | cut -c 1-7`"

#check if project/commit dir already exists, wildcarded rundate. print message and quit
echo "Checking directories..."
if [ -n "$(/bin/ls -d $PROJECT-*-$COMMIT 2>/dev/null)" ]; then
   echo "Directory for latest commit already exists: $(/bin/ls -d $PROJECT-*-$COMMIT)"
   echo "No actions taken this run."
   exit 0

# project dir exists with old commit, rename to new commit, update and rebuild
elif [ -n "$(/bin/ls -d $PROJECT-*-*)" ]; then
   echo "Directory exists, checking commit..."
   mv "$(/bin/ls -d $PROJECT-*-*)" $PROJECT-$RUNDATE-$COMMIT
   cd $PROJECT-$RUNDATE-$COMMIT
   if [ "`git pull origin`" == "Already up to date." ]; then
      echo "Directory for latest commit already exists: $(/bin/ls -d ../$PROJECT*)"
      echo "'git pull origin' response: Already up to date."
      echo "No actions taken this run."
   else
      git pull origin
      rm -rf build
      mkdir build && cd build
      cmake ..
      make -j$(nproc)
      sudo make install
   fi

# no project dir exists, download/build project fresh
else
   echo "No directory found, starting fresh..."
   git clone https://github.com/dolphin-emu/dolphin.git $PROJECT-$RUNDATE-$COMMIT
   cd $PROJECT-$RUNDATE-$COMMIT
   git submodule update --init --recursive
   mkdir build && cd build
   cmake ..
   make -j$(nproc)
   sudo make install
fi