diff -u -r ../netpbm-advanced-r2935/buildtools/installnetpbm.pl ./buildtools/installnetpbm.pl
--- ../netpbm-advanced-r2935/buildtools/installnetpbm.pl	2017-03-30 23:03:27.000000000 +0200
+++ ./buildtools/installnetpbm.pl	2017-03-30 23:07:53.748201627 +0200
@@ -59,7 +59,7 @@
               "'make package'?\n");
         my $default = "/tmp/netpbm";
         
-        my $response = prompt("package directory", $default);
+        my $response = $default;
 
         if (!-f("$response/pkginfo")) {
             print("This does not appear to be a Netpbm install package. \n");
@@ -123,7 +123,7 @@
         $default = "/usr/local/netpbm";
     }
 
-    my $response = prompt("install prefix", $default);
+    my $response = "@TERMUX_PREFIX@";
 
     my $prefix;
 
@@ -185,7 +185,7 @@
     while (!$binDir) {
         my $default = "$prefix/bin";
 
-        my $response = prompt("program directory", $default);
+        my $response = $default;
         
         if (-d($response)) {
             $binDir = $response;
@@ -243,7 +243,7 @@
     while (!$libDir) {
         my $default = "$prefix/lib";
 
-        my $response = prompt("shared library directory", $default);
+        my $response = $default;
         
         if (-d($response)) {
             $libDir = $response;
@@ -511,7 +511,7 @@
         $done = $FALSE;
 
         while (!$done) {
-            my $response = prompt("Y(es) or N(o)", "Y");
+            my $response = "N";
 
             if (uc($response) eq "Y") {
                 execLdconfig();
@@ -574,7 +574,7 @@
     while (!$linkDir) {
         my $default = "$prefix/lib";
 
-        my $response = prompt("static library directory", $default);
+        my $response = $default;
         
         if (-d($response)) {
             $linkDir = $response;
@@ -637,7 +637,7 @@
     while (!$dataDir) {
         my $default = "$prefix/lib";
 
-        my $response = prompt("data file directory", $default);
+        my $response = $default;
         
         if (-d($response)) {
             $dataDir = $response;
@@ -674,7 +674,7 @@
     while (!$hdrDir) {
         my $default = "$prefix/include";
 
-        my $response = prompt("header directory", $default);
+        my $response = $default;
         
         if (-d($response)) {
             $hdrDir = $response;
@@ -877,7 +877,7 @@
     while (!$pkgconfigDir) {
         my $default = "$prefix/lib/pkgconfig";
 
-        my $response = prompt("Pkg-config directory", $default);
+        my $response = $default;
         
         if (-d($response)) {
             $pkgconfigDir = $response;