First build that actually works. SDL_main errors before but didn't figure out the cause.

scripts/coverage_reset.sh

@@ -0,0 +1,11 @@
+#!/usr/bin/env bash
+set -e
+
+mv -f ./subprojects/packagecache .
+rm -rf subprojects builddir
+mkdir subprojects
+mv packagecache ./subprojects/
+mkdir builddir
+cp wraps/*.wrap subprojects/
+# on OSX you can't do this with static
+meson setup -Db_coverage=true builddir