[d3d11] dlls_setup.sh -> setup_dxvk.sh

Also, the install script no longer relies on the prefix
being set by the Meson configuration.

wine_utils/meson.build

@@ -3,7 +3,7 @@ conf.set('dlldir', get_option('prefix')+'/'+get_option('bindir'))
 conf.set('arch', target_machine.cpu_family())
 configure_file(
   configuration : conf,
-  input         : 'dlls_setup.sh.in',
-  output        : 'dlls_setup.sh',
+  input         : 'setup_dxvk.sh.in',
+  output        : 'setup_dxvk.sh',
   install_dir   : get_option('bindir')
 )

wine_utils/setup_dxvk.sh.in

@@ -1,9 +1,15 @@
 #!/bin/bash
 
-dlls_dir='@dlldir@'
-build_arch='@arch@'
 export WINEDEBUG=-all
 
+dlls_dir=`dirname $(readlink -f $0)`
+build_arch='@arch@'
+
+if [ ! -f "$dlls_dir/d3d11.dll" ] || [ ! -f "$dlls_dir/dxgi.dll" ]; then
+    echo "d3d11.dll or dxgi.dll not found in $dlls_dir"
+    exit 1
+fi
+
 if [ $build_arch == "x86_64" ]; then
     wine=wine64
 else
@@ -54,11 +60,13 @@ if [ "$1" == "reset" ]; then
     removeOverride d3d11
     echo -n '[2/2] '
     removeOverride dxgi
-    exit
-fi
-
-echo -n '[1/2] '
-createOverride d3d11
-echo -n '[2/2] '
-createOverride dxgi
-exit
+elif [ -z "$1" ]; then
+    echo -n '[1/2] '
+    createOverride d3d11
+    echo -n '[2/2] '
+    createOverride dxgi
+else
+    echo "Unrecognized option: $1"
+    echo "Usage: $0 [reset]"
+    exit 1
+fi