Author: Tom Parker-Shemilt <palfrey@tevp.net>
Summary: Enables non-interactive builds

installnetpbm.pl defaults to wanting keyboard interactivity, which we don't want!
----
--- a/buildtools/installnetpbm.pl.orig	2022-12-24 23:19:19.790601595 -0500
+++ b/buildtools/installnetpbm.pl	2022-12-24 23:24:36.093232453 -0500
@@ -247,6 +247,7 @@
 
     while (!$binDir) {
         my $default = "$prefix/bin";
+        return $default;
 
         my $response = fsObjPrompt("program directory", $default);
         
@@ -305,6 +306,7 @@
 
     while (!$libDir) {
         my $default = "$prefix/lib";
+        return $default;
 
         my $response = fsObjPrompt("shared library directory", $default);
         
@@ -568,7 +570,8 @@
               "you have\n");
         print("installed the library in a directory Ldconfig knows about.\n");
         print("\n");
-        
+
+        return; 
         my $done;
 
         $done = $FALSE;
@@ -637,6 +640,7 @@
 
     while (!$linkDir) {
         my $default = "$prefix/lib";
+        return $default;
 
         my $response = fsObjPrompt("shared library stub directory", $default);
         
@@ -821,6 +825,7 @@
 
     while (!$linkDir) {
         my $default = "$prefix/lib";
+        return $default;
 
         my $response = fsObjPrompt("static library directory", $default);
         
@@ -886,6 +891,7 @@
 
     while (!$dataDir) {
         my $default = "$prefix/lib";
+        return $default;
 
         my $response = fsObjPrompt("data file directory", $default);
         
@@ -923,6 +929,7 @@
 
     while (!$hdrDir) {
         my $default = "$prefix/include";
+        return $default;
 
         my $response = fsObjPrompt("header directory", $default);
         
@@ -1126,6 +1133,7 @@
 
     while (!$pkgconfigDir) {
         my $default = "$prefix/lib/pkgconfig";
+        return $default;
 
         my $response = fsObjPrompt("Pkg-config directory", $default);
         
@@ -1207,12 +1215,12 @@
 print("installation by running 'make package'.  See the INSTALL file.\n");
 print("\n");
 
-my $pkgdir = getPkgdir();
+my $pkgdir = $ENV{'BUILDDIR'} . "/pkgdir";
 
 print("Installing from package directory '$pkgdir'\n");
 print("\n");
 
-my $prefix = getPrefix();
+my $prefix = $ENV{'PKGDIR'} . "/usr";
 
 print("Using prefix '$prefix'\n");
 print("\n");