tests BUGFIX openconfig test fails without regex

Author: michalvasko

src/ly_common.c

@@ -13,7 +13,6 @@
  */
 
 #define _GNU_SOURCE
-#define _POSIX_C_SOURCE 200809L /* pthread_rwlock_t */
 
 #include "ly_common.h"
 

tests/utests/CMakeLists.txt

@@ -47,7 +47,7 @@ ly_add_utest(NAME hash_table SOURCES basic/test_hash_table.c)
 ly_add_utest(NAME inout SOURCES basic/test_inout.c)
 ly_add_utest(NAME context SOURCES basic/test_context.c)
 if(NOT WIN32)
-ly_add_utest(NAME plugins SOURCES basic/test_plugins.c)
+    ly_add_utest(NAME plugins SOURCES basic/test_plugins.c)
 endif()
 ly_add_utest(NAME xml SOURCES basic/test_xml.c)
 ly_add_utest(NAME json SOURCES basic/test_json.c)
@@ -77,4 +77,6 @@ ly_add_utest(NAME nacm SOURCES extensions/test_nacm.c)
 ly_add_utest(NAME yangdata SOURCES extensions/test_yangdata.c)
 ly_add_utest(NAME schema_mount SOURCES extensions/test_schema_mount.c)
 ly_add_utest(NAME structure SOURCES extensions/test_structure.c)
-ly_add_utest(NAME openconfig SOURCES extensions/test_openconfig.c)
+if(HAVE_REGEX_H)
+    ly_add_utest(NAME openconfig SOURCES extensions/test_openconfig.c)
+endif()