improve build system

config/makeConfigAppInclude.pl

@@ -0,0 +1,62 @@
+# $Id: makeConfigAppInclude.pl,v 1.1.1.1 2000/04/05 07:33:44 janousch Exp $ 
+
+eval 'exec perl -S $0 ${1+"$@"}'  # -*- Mode: perl -*-
+    if $running_under_some_shell; # makeConfigAppInclude.pl
+
+use Cwd;
+
+$arch = $ARGV[0];
+$outfile = $ARGV[1];
+$top = $ARGV[2];
+
+unlink("${outfile}");
+open(OUT,">${outfile}") or die "$! opening ${outfile}";
+print OUT "#Do not modify this file.\n";
+print OUT "#This file is created during the build.\n";
+
+@files =();
+push(@files,"$top/config/RELEASE");
+push(@files,"$top/config/RELEASE.${arch}");
+foreach $file (@files) {
+  if (-r "$file") {
+    open(IN, "$file") or die "Cannot open $file\n";
+    while ($line = <IN>) {
+        next if ( $line =~ /\s*#/ );
+	chomp($line);
+        $_ = $line;
+        #the following looks for
+        # prefix = $(macro)post
+        ($prefix,$macro,$post) = /(.*)\s*=\s*\$\((.*)\)(.*)/;
+        if ($macro eq "") { # true if no macro is present
+            # the following looks for
+            # prefix = post
+            ($prefix,$post) = /(.*)\s*=\s*(.*)/;
+        } else {
+            $base = $applications{$macro};
+            if ($base eq "") {
+                #print "error: $macro was not previously defined\n";
+            } else {
+                $post = $base . $post;
+            }
+        }
+        $applications{$prefix} = $post;
+        if ( -d "$post") { #check that directory exists
+            print OUT "\n";
+            if ( -d "$post/bin/$arch") { #check that directory exists
+                print OUT "${prefix}_BIN = $post/bin/${arch}\n";
+            }
+            if ( -d "$post/lib/$arch") { #check that directory exists
+                print OUT "${prefix}_LIB = $post/lib/${arch}\n";
+            }
+            if ( -d "$post/include") { #check that directory exists
+                print OUT "EPICS_INCLUDES += -I$post/include\n";
+            }
+            if ( -d "$post/dbd") { #check that directory exists
+                print OUT "EPICS_DBDFLAGS += -I $post/dbd\n";
+            }
+        }
+    }
+    close IN;
+  }
+}
+close OUT;