chore(build): revert to sdl2

vendor/sdl-2.30.5/sdl2-config.in

@@ -0,0 +1,65 @@
+#!/bin/sh
+
+# Get the canonical path of the folder containing this script
+bindir=$(cd -P -- "$(dirname -- "$0")" && printf '%s\n' "$(pwd -P)")
+
+# Calculate the canonical path of the prefix, relative to the folder of this script
+prefix=$(cd -P -- "$bindir/@bin_prefix_relpath@" && printf '%s\n' "$(pwd -P)")
+exec_prefix=@exec_prefix@
+exec_prefix_set=no
+libdir=@libdir@
+
+@ENABLE_STATIC_FALSE@usage="\
+@ENABLE_STATIC_FALSE@Usage: $0 [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs]"
+@ENABLE_STATIC_TRUE@usage="\
+@ENABLE_STATIC_TRUE@Usage: $0 [--prefix[=DIR]] [--exec-prefix[=DIR]] [--version] [--cflags] [--libs] [--static-libs]"
+
+if test $# -eq 0; then
+      echo "${usage}" 1>&2
+      exit 1
+fi
+
+while test $# -gt 0; do
+  case "$1" in
+  -*=*) optarg=`echo "$1" | sed 's/[-_a-zA-Z0-9]*=//'` ;;
+  *) optarg= ;;
+  esac
+
+  case $1 in
+    --prefix=*)
+      prefix=$optarg
+      if test $exec_prefix_set = no ; then
+        exec_prefix=$optarg
+      fi
+      ;;
+    --prefix)
+      echo $prefix
+      ;;
+    --exec-prefix=*)
+      exec_prefix=$optarg
+      exec_prefix_set=yes
+      ;;
+    --exec-prefix)
+      echo $exec_prefix
+      ;;
+    --version)
+      echo @SDL_VERSION@
+      ;;
+    --cflags)
+      echo -I@includedir@/SDL2 @SDL_CFLAGS@
+      ;;
+@ENABLE_SHARED_TRUE@    --libs)
+@ENABLE_SHARED_TRUE@      echo -L@libdir@ @SDL_RLD_FLAGS@ @SDL_LIBS@
+@ENABLE_SHARED_TRUE@      ;;
+@ENABLE_STATIC_TRUE@@ENABLE_SHARED_TRUE@    --static-libs)
+@ENABLE_STATIC_TRUE@@ENABLE_SHARED_FALSE@    --libs|--static-libs)
+@ENABLE_STATIC_TRUE@      sdl_static_libs=$(echo "@SDL_LIBS@ @SDL_STATIC_LIBS@" | sed -E "s#-lSDL2[ $]#$libdir/libSDL2.a #g")
+@ENABLE_STATIC_TRUE@      echo -L@libdir@ $sdl_static_libs
+@ENABLE_STATIC_TRUE@      ;;
+    *)
+      echo "${usage}" 1>&2
+      exit 1
+      ;;
+  esac
+  shift
+done