version_check_feature() added to check for compile-time options at run-time
diff --git a/scripts/generate_features.pl b/scripts/generate_features.pl
new file mode 100755
index 0000000..a72247d
--- /dev/null
+++ b/scripts/generate_features.pl
@@ -0,0 +1,57 @@
+#!/usr/bin/perl
+#
+
+use strict;
+
+my $include_dir = shift or die "Missing include directory";
+my $data_dir = shift or die "Missing data directory";
+my $feature_file = shift or die "Missing destination file";
+my $feature_format_file = $data_dir.'/version_features.fmt';
+
+my @sections = ( "System support", "PolarSSL modules",
+ "PolarSSL feature support" );
+
+my $line_separator = $/;
+undef $/;
+
+open(FORMAT_FILE, "$feature_format_file") or die "Opening feature format file '$feature_format_file': $!";
+my $feature_format = <FORMAT_FILE>;
+close(FORMAT_FILE);
+
+$/ = $line_separator;
+
+open(CONFIG_H, "$include_dir/config.h") || die("Failure when opening config.h: $!");
+
+my $feature_defines = "";
+my $in_section = 0;
+
+while (my $line = <CONFIG_H>)
+{
+ next if ($in_section && $line !~ /#define/ && $line !~ /SECTION/);
+ next if (!$in_section && $line !~ /SECTION/);
+
+ if ($in_section) {
+ if ($line =~ /SECTION/) {
+ $in_section = 0;
+ next;
+ }
+
+ my ($define) = $line =~ /#define (\w+)/;
+ $feature_defines .= "#if defined(${define})\n";
+ $feature_defines .= " \"${define}\",\n";
+ $feature_defines .= "#endif /* ${define} */\n";
+ }
+
+ if (!$in_section) {
+ my ($section_name) = $line =~ /SECTION: ([\w ]+)/;
+ my $found_section = grep $_ eq $section_name, @sections;
+
+ $in_section = 1 if ($found_section);
+ }
+};
+
+$feature_format =~ s/FEATURE_DEFINES\n/$feature_defines/g;
+
+open(ERROR_FILE, ">$feature_file") or die "Opening destination file '$feature_file': $!";
+print ERROR_FILE $feature_format;
+close(ERROR_FILE);
