Steps for building UniPCemu from sources on Apple Silicon macOS

build_UniPCemu.sh

#!/usr/bin/env bash
set -euo pipefail

# UniPCemu unattended build script for Apple Silicon macOS (Homebrew)

# Step 1: Install required build dependencies (SDL2 + autotools + GNU sed)
brew install sdl2 pkg-config autoconf automake libtool gnu-sed

# Step 2: Shallow-clone UniPCemu including all required submodules
git clone --depth 1 --recurse-submodules --shallow-submodules \
  https://bitbucket.org/superfury/unipcemu.git

cd unipcemu

# Step 3: Use GNU sed (gsed) instead of BSD sed to avoid makefile sed incompatibilities
perl -pi -e 's/\bsed\b/gsed/g' commonemuframework/Makefile.linux

# Step 4: Use pkg-config instead of sdl2-config for SDL2 flags on Homebrew macOS
perl -pi -e 's/\bsdl2-config --cflags\b/pkg-config --cflags sdl2/g' commonemuframework/Makefile.linux
perl -pi -e 's/\bsdl2-config --libs\b/pkg-config --libs sdl2/g' commonemuframework/Makefile.linux
perl -pi -e 's/\bsdl2-config --static-libs\b/pkg-config --static --libs sdl2/g' commonemuframework/Makefile.linux

# Step 5: Remove GCC-only compiler flag that clang does not understand
perl -pi -e 's/\s*-enable-core-inline\b//g' commonemuframework/Makefile.linux

# Step 6: Replace Linux-only malloc.h include with stdlib.h for macOS
perl -pi -e 's@^\s*#include\s*<malloc\.h>.*$@#include <stdlib.h>@' commonemuframework/support/zalloc.c

# Step 7: Generate configure script and configure UniPCemu (do NOT run commonemuframework/autogen.sh)
cd UniPCemu
autoreconf -fi
./configure

# Step 8: Build using the linux make target; silence warnings via CC wrapper (do not override CFLAGS)
make linux rebuild SDL2 CC="clang -w"

# Step 9: Print the built binary path and run it (comment out exec if you only want to build)
BIN="../../projects_build/UniPCemu/linux/UniPCemu"
echo "Built: ${BIN}"
exec "${BIN}"