mupen64plus: disable the Vulkan API in core project

The Vulkan API can be used by video plugins and front-end, but we don't currently ship any such components.
Added upstream in mupen64plus/mupen64plus-core#1022

Author: cmitu

scriptmodules/emulators/mupen64plus.sh

@@ -170,6 +170,8 @@ function build_mupen64plus() {
             isPlatform "armv6" && params+=("HOST_CPU=armv6")
             isPlatform "armv7" && params+=("HOST_CPU=armv7")
             isPlatform "aarch64" && params+=("HOST_CPU=aarch64")
+            # we don't ship a Vulkan enabled front-end, so disable Vulkan in the core project
+            params+=("VULKAN=0")
 
             [[ "$dir" == "mupen64plus-ui-console" ]] && params+=("COREDIR=$md_inst/lib/" "PLUGINDIR=$md_inst/lib/mupen64plus/")
             make -C "$dir/projects/unix" "${params[@]}" clean
@@ -244,6 +246,8 @@ function install_mupen64plus() {
             isPlatform "armv7" && params+=("HOST_CPU=armv7")
             isPlatform "aarch64" && params+=("HOST_CPU=aarch64")
             isPlatform "x86" && params+=("SSE=SSE2")
+            # disable VULKAN for the core project
+            params+=("VULKAN=0")
             make -C "$source/projects/unix" PREFIX="$md_inst" OPTFLAGS="$CFLAGS -O3 -flto" "${params[@]}" install
         fi
     done