build.sh

#!/usr/bin/env bash
# Build SmoothWheelScroll (REAPER extension) for Windows x64.
#
# Toolchain lives in the shared _tools dir per the global convention.
set -euo pipefail

TOOLS="${TOOLS:-/d/Projects/Code/_tools}"
W64="$TOOLS/w64devkit"
export PATH="$W64/bin:$PATH"

ROOT="$(cd "$(dirname "${BASH_SOURCE[0]:-$0}")" && pwd)"
SDK="$ROOT/third_party/reaper-sdk-git/sdk"
SRC="$ROOT/src/smooth_wheel_scroll.cpp"
OUT="$ROOT/build"
DLL="$OUT/reaper_smoothwheelscroll-x64.dll"

mkdir -p "$OUT"

DEFS=()
DEV=0
for arg in "$@"; do
  case "$arg" in
    # Compile-time switch for the diagnostic logging (writes to %TEMP%).
    --debug-log) DEFS+=(-DSWS_DEBUG_LOG) ;;
    # Compile the settings window OUT. The window is part of the normal build (the
    # plugin ships a settings entry); pass this only to build a headless DLL.
    --no-settings-ui) DEFS+=(-DSWS_NO_SETTINGS_UI) ;;
    # DEV BUILD: append a research log of recent wheel messages next to the DLL, so a tester on
    # hardware we do not have (a free-spinning wheel, a touchpad) can send their real values back.
    # NEVER in a release build -- see the note by the wheel log in the source.
    # It also gets its OWN FILE NAME on purpose. The two builds are alternatives, not companions
    # (running both would install two hooks and animate every wheel twice), so they must not be
    # able to sit in UserPlugins under one name and silently overwrite or double up.
    --wheel-log) DEFS+=(-DSWS_WHEEL_LOG) ; DEV=1 ;;
    *) echo "unknown build option: $arg" >&2; exit 2 ;;
  esac
done

# One name per kind of build. The release name is what REAPER users expect to see; the DEV name is
# deliberately different so the two cannot be confused in UserPlugins.
if [ "$DEV" = "1" ]; then
  DLL="$OUT/reaper_smoothwheelscroll-x64-DEV.dll"
else
  DLL="$OUT/reaper_smoothwheelscroll-x64.dll"
fi
echo "== target =="
echo "$DLL"

echo "== g++ =="
g++ --version | head -1
echo "== compiling =="
g++ -std=c++17 -O2 -shared -static -static-libgcc -static-libstdc++ \
  -DWIN32 -D_WIN32 -DNOMINMAX -DUNICODE -D_UNICODE \
  "${DEFS[@]}" \
  -I"$SDK" \
  "$SRC" \
  -o "$DLL" \
  -luser32 -lgdi32 -lwinmm

echo "== built =="
ls -l "$DLL"
echo "== exported entry point =="
objdump -p "$DLL" | grep -i ReaperPluginEntry || { echo "MISSING EXPORT"; exit 1; }