Use Postgresql Version number from pg_config.h

cmake/FindPostgreSQL.cmake

@@ -4,6 +4,7 @@
 #  POSTGRESQL_INCLUDE_DIR - PostgreSQL include directory
 #  POSTGRESQL_LIBRARY     - PostgreSQL library
 #  PQ_LIBRARY             - PostgreSQL PQ library
+#  PQ_LIBRARY             - PostgreSQL version
 
 if("${POSTGRESQL_INCLUDE_DIR}" STREQUAL "" OR "${POSTGRESQL_INCLUDE_DIR}" STREQUAL "POSTGRESQL_INCLUDE_DIR-NOTFOUND") 
     find_path(
@@ -16,12 +17,17 @@ if("${POSTGRESQL_INCLUDE_DIR}" STREQUAL "" OR "${POSTGRESQL_INCLUDE_DIR}" STREQU
         OUTPUT_VARIABLE PG_INCLUDE_SERVER
         OUTPUT_STRIP_TRAILING_WHITESPACE
     )
+    
+    execute_process (
+        COMMAND pg_config --version
+        OUTPUT_VARIABLE PG_VERSION_NUM
+        OUTPUT_STRIP_TRAILING_WHITESPACE
+    )
 
     set(POSTGRESQL_INCLUDE_DIR ${PG_INCLUDE_SERVER})
 
 endif()
 
-set(PG_VERSION_NUM "140000")
 
 execute_process (
         COMMAND pg_config --libdir

sources/build.h.cmake

@@ -14,6 +14,5 @@
 #cmakedefine PAM_FOUND @PAM_FOUND@
 #cmakedefine LDAP_FOUND @LDAP_FOUND@
 #cmakedefine PROM_FOUND @PROM_FOUND@
-#cmakedefine PG_VERSION_NUM @PG_VERSION_NUM@
 
 #endif /* ODYSSEY_BUILD_H */

sources/postgres.h

@@ -27,5 +27,6 @@
 #include <common/saslprep.h>
 #include <common/scram-common.h>
 #include <string.h>
+#include <pg_config.h>
 
 #endif /* ODYSSEY_POSTGRES_H */