From 9e20aa8a3e75cd34b5a36a7b41b5481c4a0711a8 Mon Sep 17 00:00:00 2001
From: Nadia Holmquist Pedersen <nadia@nhp.sh>
Date: Fri, 23 Apr 2021 13:11:49 +0200
Subject: Make Mac builds a lot smaller by avoiding macdeployqt

---
 tools/mac-libs.sh | 67 ++++++++++++++++++++++++++++++++++++++++++-------------
 1 file changed, 51 insertions(+), 16 deletions(-)

(limited to 'tools')

diff --git a/tools/mac-libs.sh b/tools/mac-libs.sh
index 1766cf7..c748890 100755
--- a/tools/mac-libs.sh
+++ b/tools/mac-libs.sh
@@ -27,36 +27,71 @@ abspath() {
 cmake_qtdir=$(grep -E "Qt._DIR" CMakeCache.txt | cut -d= -f2)
 qtdir="$(abspath "$cmake_qtdir"/../../..)"
 
-if [[ ! -d "$app/Contents/Frameworks" ]]; then
-	"${qtdir}/bin/macdeployqt" "$app"
-fi
-
-# We'll have to copy the Qt plugins we need on our own if macdeployqt forgets
-# Qt6 bug?
 plugindir="$app/Contents/PlugIns"
 if [[ ! -d "$plugindir" ]]; then
-    mkdir -p "$plugindir/styles" "$plugindir/platforms"
-    cp "$qtdir/share/qt/plugins/styles/libqmacstyle.dylib" "$plugindir/styles/"
-    cp "$qtdir/share/qt/plugins/platforms/libqcocoa.dylib" "$plugindir/platforms/"
+	qt_plugins="$qtdir/plugins"
+	if [[ ! -d "$qt_plugins" ]]; then
+		qt_plugins="$qtdir/share/qt/plugins"
+	fi
 
-    install_name_tool -add_rpath "@executable_path/../Frameworks" "$app/Contents/MacOS/melonDS"
+    mkdir -p "$plugindir/styles" "$plugindir/platforms"
+    cp "$qt_plugins/styles/libqmacstyle.dylib" "$plugindir/styles/"
+    cp "$qt_plugins/platforms/libqcocoa.dylib" "$plugindir/platforms/"
 fi
 
-# Fix library load paths that macdeployqt forgot about
+mkdir "$app/Contents/Frameworks"
+install_name_tool -add_rpath "@executable_path/../Frameworks" "$app/Contents/MacOS/melonDS"
+
 fixup_libs() {
-	local libs=($(otool -L "$1" | sed -E 's/\t(.*) \(.*$/\1/' | grep -vE '/System|/usr/lib|\.framework|^\@|:$'))
+	local libs=($(otool -L "$1" | grep -vE "/System|/usr/lib|:$" | sed -E 's/\t(.*) \(.*$/\1/'))
 	
 	for lib in "${libs[@]}"; do
-		local base="$(basename "$lib")"
-		install_name_tool -change "$lib" "@executable_path/../Frameworks/$base" "$1"
+		# Dereference symlinks to get the actual .dylib as binaries' load
+		# commands can contain paths to symlinked libraries.
+		local abslib="$(abspath "$lib")"
+
+		if [[ "$abslib" == *".framework/"* ]]; then
+			local fwpath="$(echo "$abslib" | sed -E 's@(.*\.framework)/.*@\1/@')"
+			local fwlib="$(echo "$abslib" | sed -E 's/.*\.framework//')"
+			local fwname="$(basename "$fwpath")"
+			local install_path="$app/Contents/Frameworks/$fwname"
+
+			install_name_tool -change "$lib" "@rpath/$fwname/$fwlib" "$1"
+
+			if [[ ! -d "$install_path" ]]; then
+				cp -a "$fwpath" "$install_path"
+				chown -R $UID "$install_path"
+				chmod -R u+w "$install_path"
+				strip -SNTx "$install_path/$fwlib"
+				fixup_libs "$install_path/$fwlib"
+			fi
+		else
+			local base="$(basename "$abslib")"
+			local install_path="$app/Contents/Frameworks/$base"
+
+			install_name_tool -change "$lib" "@rpath/$base" "$1"
+
+			if [[ ! -f "$install_path" ]]; then
+				install -m644 "$abslib" "$install_path"
+				strip -SNTx "$install_path"
+				fixup_libs "$install_path"
+			fi
+		fi
 	done
 }
 
-find "$app/Contents/Frameworks" -maxdepth 1 -name '*.dylib' | while read lib; do
+
+fixup_libs "$app/Contents/MacOS/melonDS"
+find "$app/Contents/PlugIns" -name '*.dylib' | while read lib; do
 	fixup_libs "$lib"
 done
 
-fixup_libs "$app/Contents/MacOS/melonDS"
+bad_rpaths=($(otool -l "$app/Contents/MacOS/melonDS" | grep -E "^ *path (/usr/local|/opt)" | sed -E 's/^ *path (.*) \(.*/\1/'))
+
+for path in "${bad_rpaths[@]}"; do
+	install_name_tool -delete_rpath "$path" "$app/Contents/MacOS/melonDS"
+done
+
 codesign -s - --deep "$app"
 
 if [[ $build_dmg == 1 ]]; then
-- 
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