[test] add configure_build.sh convenience script for builds suitable for the test suite

Makefile.am

@@ -489,6 +489,7 @@ EXTRA_DIST = \
     test/long_spa.key \
     test/invalid.args \
     test/test-fwknop.pl \
+    test/configure_build.sh \
     test/generate_cores.sh \
     test/fko-python.py \
     test/run-test-suite.sh \

test/README

 
-This directory contains the fwknop test suite.  After compiling the fwknop
-sources in the parent directory of test/ the test suite can be executed.  One
-of the most comprehensive ways of executing the test suite is as follows:
+This directory contains the fwknop test suite. After compiling the fwknop
+sources in the parent directory of test/ the test suite can be executed. The
+test/configure_build.sh script provides recommended defaults for the
+'configure' script, and should be used before compiling. After this, one of
+the most comprehensive ways of executing the test suite is as follows:
 
 # ./run-test-suite.sh --enable-all
 
 This mode enables IP resolution tests, so you will need Internet access in this
-case.  If this is not possible or desirable, then another comprehensive testing
+case. If this is not possible or desirable, then another comprehensive testing
 mode can be achieved with:
 
 # ./run-test-suite.sh --enable-recompile --enable-perl-module-checks --enable-distcheck
@@ -17,7 +19,7 @@ modes) may be found in the fwknop tutorial available here:
 http://www.cipherdyne.org/fwknop/docs/fwknop-tutorial.html#3.5
 
 For even more comprehensive testing than the --enable-all switch, you can use
---enable-complete.  However, before doing this, you will want to install the
+--enable-complete. However, before doing this, you will want to install the
 'libfiu' fault injection library (available here: http://blitiri.com.ar/p/libfiu/),
 and then compile fwknop with the 'test/configure_max_coverage.sh' script. This
 provides additional arguments to the 'configure' script to build fwknop with a

test/configure_build.sh

+#!/bin/sh -x
+
+#
+# This is a convenience script to run ./configure with the command line args
+# that the test suite needs (sets up binary locations, sysconfdir,
+# etc.). Execute this script from the top level fwknop sources directory, and
+# then run the test-fwknop.pl script from the test/ directory.
+#
+
+if [ -x ./configure ]; then
+    ./configure --prefix=/usr --sysconfdir=`pwd`/test/conf --localstatedir=`pwd`/test/run $@
+else
+    echo "[*] Execute from the fwknop top level sources directory"
+fi

test/test-fwknop.pl

@@ -20,9 +20,9 @@ our $local_key_file = 'local_spa.key';
 our $long_key_file  = 'long_spa.key';  ### > 16 bytes
 our $local_spa_key  = 'fwknoptest';
 our $local_hmac_key_file = 'local_hmac_spa.key';
-my $output_dir      = 'output';
-our $conf_dir       = 'conf';
-my $run_dir         = 'run';
+my $output_dir      = cwd() . '/output';
+our $conf_dir       = cwd() . '/conf';
+our $run_dir        = cwd() . '/run';
 our $run_tmp_dir_top = 'runtmp';
 our $run_tmp_dir    = "$run_tmp_dir_top/subdir1/subdir2";
 my $cmd_out_tmp     = 'cmd.out';