diff --git a/demos/engines/cluster_labs/hw_cluster_labs_err.h b/demos/engines/cluster_labs/hw_cluster_labs_err.h
index afc175b133554d79c28bc8f3ef41256ebb6f2924..f548a3b668de5ba3a12456ab2fb256bf1dc7b1de 100644
--- a/demos/engines/cluster_labs/hw_cluster_labs_err.h
+++ b/demos/engines/cluster_labs/hw_cluster_labs_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_CL_ERR_H
 #define HEADER_CL_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/demos/engines/ibmca/hw_ibmca_err.h b/demos/engines/ibmca/hw_ibmca_err.h
index da64bde5f21bda01692ce07b12ffe999b398066a..2070f9579903c7c0fe96ab6549da4db394fb0a78 100644
--- a/demos/engines/ibmca/hw_ibmca_err.h
+++ b/demos/engines/ibmca/hw_ibmca_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_IBMCA_ERR_H
 #define HEADER_IBMCA_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/demos/engines/zencod/hw_zencod_err.h b/demos/engines/zencod/hw_zencod_err.h
index 1b5dcb56852729cbc90e4220723ce8a55d7c2398..60e923fd88ab2e5d8c3ad61e5429860c0995bb6a 100644
--- a/demos/engines/zencod/hw_zencod_err.h
+++ b/demos/engines/zencod/hw_zencod_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_ZENCOD_ERR_H
 #define HEADER_ZENCOD_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/ccgost/e_gost_err.h b/engines/ccgost/e_gost_err.h
index cf3980081d9bc520af6599fa4a955739d34b4e75..a8e6841f22d497c6edf819ad03e722988a7550bb 100644
--- a/engines/ccgost/e_gost_err.h
+++ b/engines/ccgost/e_gost_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_GOST_ERR_H
 #define HEADER_GOST_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_4758cca_err.h b/engines/e_4758cca_err.h
index 3d4276be91b39be20c8ebf5250f825da3344e976..26087edbfae763477730c7bf77a86d2d3f6a8605 100644
--- a/engines/e_4758cca_err.h
+++ b/engines/e_4758cca_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_CCA4758_ERR_H
 #define HEADER_CCA4758_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_aep_err.h b/engines/e_aep_err.h
index 8fe4cf921f06a7e9b6e4c7b77df92708bf6ee5ea..35b2e742603aa4ef69e730011206d2d922e615d0 100644
--- a/engines/e_aep_err.h
+++ b/engines/e_aep_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_AEPHK_ERR_H
 #define HEADER_AEPHK_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_atalla_err.h b/engines/e_atalla_err.h
index cdac052d8c98096574f09af44e83c39a3589625a..36e09bf42fe10a8642d0dc4781bbc03215b20514 100644
--- a/engines/e_atalla_err.h
+++ b/engines/e_atalla_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_ATALLA_ERR_H
 #define HEADER_ATALLA_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_chil_err.h b/engines/e_chil_err.h
index 482086e3b51a95f81db5217d11acc88229b2d55b..051854950a1d02eb7093d80f9776ca1ea48fadbe 100644
--- a/engines/e_chil_err.h
+++ b/engines/e_chil_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_HWCRHK_ERR_H
 #define HEADER_HWCRHK_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_cswift_err.h b/engines/e_cswift_err.h
index 9072cbe616e46310438794128626f43807a41b69..69c2a9f874455f3af14fdfde456ca2ff1156153c 100644
--- a/engines/e_cswift_err.h
+++ b/engines/e_cswift_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_CSWIFT_ERR_H
 #define HEADER_CSWIFT_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_gmp_err.h b/engines/e_gmp_err.h
index cf46f0ec742af98e3157af3ae97dd0c99bfe2698..dd05dfd800ce2ae1e0c5fbcfc22a09bd7a3a8414 100644
--- a/engines/e_gmp_err.h
+++ b/engines/e_gmp_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_GMP_ERR_H
 #define HEADER_GMP_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_nuron_err.h b/engines/e_nuron_err.h
index a56bfdf30398b3ec9d7b5d8aa94095df81e11795..219babbb457ee8f5d81bc5151668a5407d4d9f55 100644
--- a/engines/e_nuron_err.h
+++ b/engines/e_nuron_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_NURON_ERR_H
 #define HEADER_NURON_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_sureware_err.h b/engines/e_sureware_err.h
index 82af229bec7b2616f3ce1533789fad7bce59cf9d..ec8ed0c59bf3b6ad2334f148cceab384d2104cea 100644
--- a/engines/e_sureware_err.h
+++ b/engines/e_sureware_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_SUREWARE_ERR_H
 #define HEADER_SUREWARE_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.
diff --git a/engines/e_ubsec_err.h b/engines/e_ubsec_err.h
index 3229eca5cf3d932de382d21a6bcd1e3ac201921b..b10b2387f28140283205d941bccd42c112a45502 100644
--- a/engines/e_ubsec_err.h
+++ b/engines/e_ubsec_err.h
@@ -55,6 +55,10 @@
 #ifndef HEADER_UBSEC_ERR_H
 #define HEADER_UBSEC_ERR_H
 
+#ifdef  __cplusplus
+extern "C" {
+#endif
+
 /* BEGIN ERROR CODES */
 /* The following lines are auto generated by the script mkerr.pl. Any changes
  * made after this point may be overwritten when the script is next run.