irrlicht: Enable aarch64 builds (#24064)

mingw-w64-irrlicht/002-aarch64.patch

@@ -0,0 +1,14 @@
+diff -bur irrlicht-1.8.5-o/source/Irrlicht/Makefile irrlicht-1.8.5/source/Irrlicht/Makefile
+--- irrlicht-1.8.5-o/source/Irrlicht/Makefile	2025-04-20 19:14:14.318395200 -0600
++++ irrlicht-1.8.5/source/Irrlicht/Makefile	2025-04-20 19:14:42.227736400 -0600
+@@ -54,6 +54,10 @@
+ LIBAESGM = aesGladman/aescrypt.o aesGladman/aeskey.o aesGladman/aestab.o aesGladman/fileenc.o aesGladman/hmac.o aesGladman/prng.o aesGladman/pwd2key.o aesGladman/sha1.o aesGladman/sha2.o
+ BZIP2OBJ = bzip2/blocksort.o bzip2/huffman.o bzip2/crctable.o bzip2/randtable.o bzip2/bzcompress.o bzip2/decompress.o bzip2/bzlib.o
+ 
++ifeq ($(MSYSTEM_CARCH),aarch64)
++	LIBPNGOBJ += libpng/arm/arm_init.o libpng/arm/filter_neon_intrinsics.o libpng/arm/palette_neon_intrinsics.o libpng/arm/filter_neon.o
++endif
++
+ # Next variable is for additional scene nodes etc. of customized Irrlicht versions
+ EXTRAOBJ =
+ LINKOBJ = $(IRRMESHOBJ) $(IRROBJ) $(IRRPARTICLEOBJ) $(IRRANIMOBJ) \

mingw-w64-irrlicht/PKGBUILD

@@ -5,22 +5,47 @@ _realname=irrlicht
 pkgbase=mingw-w64-${_realname}
 pkgname="${MINGW_PACKAGE_PREFIX}-${_realname}"
 pkgver=1.8.5
-pkgrel=2
+pkgrel=3
 pkgdesc="An open source high performance realtime 3D graphics engine (mingw-w64)"
 arch=('any')
-mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64')
+mingw_arch=('mingw32' 'mingw64' 'ucrt64' 'clang64' 'clangarm64')
 url="https://irrlicht.sourceforge.io/"
 license=("custom")
-makedepends=("${MINGW_PACKAGE_PREFIX}-cc")
+makedepends=("${MINGW_PACKAGE_PREFIX}-cc"
+             $([[ ${CARCH} == aarch64 ]] && echo "git"))
 depends=("${MINGW_PACKAGE_PREFIX}-gcc-libs")
 source=("https://downloads.sourceforge.net/irrlicht/irrlicht-${pkgver}.zip"
-        "001-compile-fixes.patch")
+        "001-compile-fixes.patch"
+        "002-aarch64.patch")
 sha256sums=('effb7beed3985099ce2315a959c639b4973aac8210f61e354475a84105944f3d'
-            'd8693950e4caa0199a57b84c9d1dcbec6186158372595db84b45522a38c57412')
+            'd8693950e4caa0199a57b84c9d1dcbec6186158372595db84b45522a38c57412'
+            '67805e208400d834f87ba8857fabfb1622fdce5b2a74c162aec40967bb1e9323')
+
+# Bring back NEON optimized code that matches the version being used
+_pngver="1.6.37" # From source/Irrlicht/libpng/png.h
+if [[ ${MSYSTEM} == CLANGARM64 ]]; then
+  source+=("png::git+https://github.com/pnggroup/libpng.git#tag=v${_pngver}")
+  sha256sums+=('2f502df9c7230e2706095386afb0f876cc9b8d688e5f07ded7c4d169d7a96bdf')
+fi
+
+apply_patch_with_msg() {
+  for _patch in "$@"
+  do
+    msg2 "Applying ${_patch}"
+    patch -Nbp1 -i "${srcdir}/${_patch}"
+  done
+}
 
 prepare() {
   cd "${srcdir}/${_realname}-${pkgver}"
-  patch -p1 -i "${srcdir}/001-compile-fixes.patch"
+
+  apply_patch_with_msg \
+    001-compile-fixes.patch \
+    002-aarch64.patch
+
+  if [[ ${MSYSTEM} == CLANGARM64 ]]; then
+    mv "${srcdir}/png/arm" "${srcdir}/${_realname}-${pkgver}/source/Irrlicht/libpng"
+  fi
 
   cd "${srcdir}"
   cp -rf "${_realname}-${pkgver}" "build-${MSYSTEM}-shared"