add vcpkg support

Changes

@@ -1,5 +1,7 @@
 Revision history for Kafka-Librd
 
+  - Added support for Visual C++ + vcpkg (gh#21)
+
 0.14 2019-10-20 19:50:39 -0600
   - Aded flush and destroy methods (gh#19, miket++)
 

Makefile.PL

@@ -5,6 +5,7 @@ use Config;
 use ExtUtils::MakeMaker 6.64;
 use Alien::Librdkafka 0.9.3;
 use Alien::Base::Wrapper qw( Alien::Librdkafka !export );
+use File::Spec ();
 
 WriteMakefile(
     NAME                => 'Kafka::Librd',
@@ -44,6 +45,6 @@ WriteMakefile(
 );
 
 sub MY::postamble {
-    "const_xs.inc : utils/generate_const.pl\n" .
-    "\t\$(FULLPERL) utils/generate_const.pl\n";
+    "const_xs.inc : @{[ File::Spec->catfile(qw( utils generate_const.pl )) ]}\n" .
+    "\t\$(FULLPERL) @{[ File::Spec->catfile(qw( utils generate_const.pl )) ]}\n";
 }

rdkafkaxs.c

@@ -63,7 +63,6 @@ krd_parse_topic_partition_list(pTHX_ AV* tplist) {
 }
 
 AV* krd_expand_topic_partition_list(pTHX_ rd_kafka_topic_partition_list_t* tpar) {
-    char errstr[ERRSTR_SIZE];
     AV* tplist = newAV();
     int i;
     for (i = 0; i < tpar->cnt; i++) {
@@ -78,10 +77,6 @@ AV* krd_expand_topic_partition_list(pTHX_ rd_kafka_topic_partition_list_t* tpar)
         av_push(tplist, newRV_noinc((SV*)tp));
     }
     return tplist;
-
-CROAK:
-    croak("%s", errstr);
-    return NULL;
 }
 
 rd_kafka_conf_t* krd_parse_config(pTHX_ rdkafka_t *krd, HV* params) {
@@ -144,13 +139,11 @@ rd_kafka_topic_conf_t* krd_parse_topic_config(pTHX_ HV *params, char* errstr) {
                 strval,
                 errstr,
                 ERRSTR_SIZE);
-        if (res != RD_KAFKA_CONF_OK)
-            goto ERROR;
+        if (res != RD_KAFKA_CONF_OK) {
+            rd_kafka_topic_conf_destroy(topconf);
+            return NULL;
+        }
     }
 
     return topconf;
-
-ERROR:
-    rd_kafka_topic_conf_destroy(topconf);
-    return NULL;
 }