ngx-build: always use canonicalized paths in the --add-module=DIR opt…

…ions.

ngx-build

@@ -3,8 +3,9 @@
 use strict;
 use warnings;
 
-use File::Spec;
+use File::Spec ();
 use Getopt::Std;
+use Cwd ();
 
 my $cc = $ENV{NGX_BUILD_CC};
 my $optimize = $ENV{NGX_BUILD_OPT};
@@ -58,6 +59,11 @@ if (($1 == 1 && $2 == 1 && $3 >= 4)
     @opts = @ARGV;
 }
 
+for (@opts) {
+    # TODO: we can process paths in other options as well
+    s/^(--add-module=)(\S+)/$1 . Cwd::realpath($2)/ge;
+}
+
 push @opts, '--with-poll_module';
 
 if ($dtrace) {