Add new test script depends-hashes.pl
This is step 1 of a plan to get rid once and for all of missing depends_on in
the X509 test suite (step 2 will be RSA/ECDSA, and step 0 was curves.pl).
diff --git a/tests/scripts/depends-hashes.pl b/tests/scripts/depends-hashes.pl
new file mode 100755
index 0000000..76e1b73
--- /dev/null
+++ b/tests/scripts/depends-hashes.pl
@@ -0,0 +1,71 @@
+#!/usr/bin/perl
+
+# depends-hashes.pl
+#
+# Copyright (c) 2017, ARM Limited, All Rights Reserved
+#
+# Purpose
+#
+# To test the code dependencies on individual hashes in each test suite. This
+# is a verification step to ensure we don't ship test suites that do not work
+# for some build options.
+#
+# The process is:
+# for each possible hash
+# build the library and test suites with the hash disabled
+# execute the test suites
+#
+# And any test suite with the wrong dependencies will fail.
+#
+# Usage: tests/scripts/depends-hashes.pl
+#
+# This script should be executed from the root of the project directory.
+
+use warnings;
+use strict;
+
+-d 'library' && -d 'include' && -d 'tests' or die "Must be run from root\n";
+
+my $config_h = 'include/mbedtls/config.h';
+
+# as many SSL options depend on specific hashes,
+# and SSL is not in the test suites anyways,
+# disable it to avoid dependcies issues
+my $ssl_sed_cmd = 's/^#define \(MBEDTLS_SSL.*\)/\1/p';
+my @ssl = split( /\s+/, `sed -n -e '$ssl_sed_cmd' $config_h` );
+
+my $mdx_sed_cmd = 's/^#define \(MBEDTLS_MD..*_C\)/\1/p';
+my $sha_sed_cmd = 's/^#define \(MBEDTLS_SHA.*_C\)/\1/p';
+my @hashes = split( /\s+/,
+ `sed -n -e '$mdx_sed_cmd' -e '$sha_sed_cmd' $config_h` );
+system( "cp $config_h $config_h.bak" ) and die;
+sub abort {
+ system( "mv $config_h.bak $config_h" ) and warn "$config_h not restored\n";
+ die $_[0];
+}
+
+for my $hash (@hashes) {
+ system( "cp $config_h.bak $config_h" ) and die "$config_h not restored\n";
+ system( "make clean" ) and die;
+
+ print "\n******************************************\n";
+ print "* Testing without hash: $hash\n";
+ print "******************************************\n";
+
+ system( "scripts/config.pl unset $hash" )
+ and abort "Failed to disable $hash\n";
+
+ for my $opt (@ssl) {
+ system( "scripts/config.pl unset $opt" )
+ and abort "Failed to disable $opt\n";
+ }
+
+ system( "CFLAGS='-Werror -Wall -Wextra' make lib" )
+ and abort "Failed to build lib: $hash\n";
+ system( "cd tests && make" ) and abort "Failed to build tests: $hash\n";
+ system( "make test" ) and abort "Failed test suite: $hash\n";
+}
+
+system( "mv $config_h.bak $config_h" ) and die "$config_h not restored\n";
+system( "make clean" ) and die;
+exit 0;