buildsystem: fix for cross-compilation

Avoid running the openssl binary, since it would break for
cross-compilation. Buildroot has a supported version, anyway.

Also, avoid adding hard-coded includes and libraries search
paths, since they are missing the destdir; Buildroot compilers
and linkers already know where to search, anyway.

Signed-off-by: "Yann E. MORIN" <yann.morin.1998@free.fr>

diff -durN perl-net-ssleay-1.64.orig/inc/Module/Install/PRIVATE/Net/SSLeay.pm perl-net-ssleay-1.64/inc/Module/Install/PRIVATE/Net/SSLeay.pm
--- perl-net-ssleay-1.64.orig/inc/Module/Install/PRIVATE/Net/SSLeay.pm	2014-04-01 08:08:37.000000000 +0200
+++ perl-net-ssleay-1.64/inc/Module/Install/PRIVATE/Net/SSLeay.pm	2014-07-13 00:38:46.281380282 +0200
@@ -37,14 +37,18 @@
         exit 0; # according http://wiki.cpantesters.org/wiki/CPANAuthorNotes this is best-practice when "missing library"
     }
 
-    $self->check_openssl_version($prefix, $exec);
+# Does not work for cross-compilation.
+# In Buildroot, we do have a supported version.
+#    $self->check_openssl_version($prefix, $exec);
     my $opts = $self->ssleay_get_build_opts($prefix, $exec);
 
     $self->makemaker_args(
         CCCDLFLAGS => $opts->{cccdlflags},
         OPTIMIZE => $opts->{optimize},
-        INC => join(' ', map {"-I$_"} @{$opts->{inc_paths}}),
-        LIBS => join(' ', (map {"-L$_"} @{$opts->{lib_paths}}), (map {"-l$_"} @{$opts->{lib_links}})),
+# Buildroot already has the correct include and library search paths.
+#        INC => join(' ', map {"-I$_"} @{$opts->{inc_paths}}),
+#        LIBS => join(' ', (map {"-L$_"} @{$opts->{lib_paths}}), (map {"-l$_"} @{$opts->{lib_links}})),
+        LIBS => join(' ', (map {"-l$_"} @{$opts->{lib_links}})),
     );
 
     if ( $self->prompt(