emscripten: update 3.1.51

mingw-w64-emscripten/PKGBUILD

@@ -6,9 +6,10 @@ pkgname=("${MINGW_PACKAGE_PREFIX}-${_realname}")
 # Sadly, upstream currently suggests bundling a binaryen version for the time being:
 # https://github.com/emscripten-core/emscripten/issues/12252
 # I'm obviously unhappy about that but it appears to be the only practical solution for the time being.
-pkgver=3.1.46
-_binaryen_revision=16a59938563c93d8459bf36679c83497aeba7cc7
-_llvm_project_revision=75501f53624de92aafce2f1da698b249a7293dc7
+pkgver=3.1.51
+# NOTE: You need to run ./get-compatible-versions.sh after changing the pkgver!
+_binaryen_revision=9e636855b582d1499a87fb73f55d85102ce95a58
+_llvm_project_revision=f2464ca317bfeeedddb7cbdea3c2c8ec487890bb
 pkgrel=1
 pkgdesc="Compile C and C++ into highly-optimizable JavaScript for the web (mingw-w64)"
 arch=('any')

mingw-w64-emscripten/get-compatible-versions.sh

@@ -0,0 +1,15 @@
+#!/usr/bin/env bash
+#
+# Get compatible versions of binaryen and llvm
+#
+# How to use:
+# Change pkgver in PKGBUILD to desired version and then run ./get-compatible-versions.sh.
+# This will fetch, print and substitute into the PKGBUILD the compatible binaryen and llvm versions.
+
+pkgver=$(makepkg --printsrcinfo | sed -rn 's/.*pkgver = (.*)/\1/gp')
+tag_hash=$(curl -Ls https://github.com/emscripten-core/emsdk/raw/main/emscripten-releases-tags.json | jq ".releases[\"$pkgver\"]" | sed s/\"//g)
+deps_file=$(curl -Ls "https://chromium.googlesource.com/emscripten-releases/+/$tag_hash/DEPS?format=TEXT" | base64 -d)
+binaryen_revision=$(echo "$deps_file" | sed -rn "s/.*'binaryen_revision': '(.*)',/\\1/gp")
+llvm_project_revision=$(echo "$deps_file" | sed -rn "s/.*'llvm_project_revision': '(.*)',/\\1/gp")
+sed -i "s/_binaryen_revision=.*/_binaryen_revision=$binaryen_revision/g" PKGBUILD
+sed -i "s/_llvm_project_revision=.*/_llvm_project_revision=$llvm_project_revision/g" PKGBUILD