FindPostgreSQL: Add server component

Require the server-specific artifacts only if the Server
component is requested.

Issue: #17223

1 files changed, 24 insertions, 1 deletions

diff --git a/Modules/FindPostgreSQL.cmake b/Modules/FindPostgreSQL.cmake
index 911210f..147071a 100644
--- a/Modules/FindPostgreSQL.cmake
+++ b/Modules/FindPostgreSQL.cmake
@@ -30,6 +30,16 @@ This module will set the following variables in your project:
   the link directories for PostgreSQL libraries
 ``PostgreSQL_VERSION_STRING``
   the version of PostgreSQL found
+``PostgreSQL_TYPE_INCLUDE_DIR``
+  the directories of the PostgreSQL server headers
+
+Components
+^^^^^^^^^^
+
+This module contains additional ``Server`` component, that forcibly checks
+for the presence of server headers. Note that ``PostgreSQL_TYPE_INCLUDE_DIR``
+is set regardless of the presence of the ``Server`` component in find_package call.
+
 #]=======================================================================]
 
 # ----------------------------------------------------------------------------
@@ -81,6 +91,9 @@ This module will set the following variables in your project:
 #
 # ----------------------------------------------------------------------------
 
+cmake_policy(PUSH)
+cmake_policy(SET CMP0057 NEW) # if IN_LIST
+
 set(PostgreSQL_INCLUDE_PATH_DESCRIPTION "top-level directory containing the PostgreSQL include directories. E.g /usr/local/include/PostgreSQL/8.4 or C:/Program Files/PostgreSQL/8.4/include")
 set(PostgreSQL_INCLUDE_DIR_MESSAGE "Set the PostgreSQL_INCLUDE_DIR cmake cache entry to the ${PostgreSQL_INCLUDE_PATH_DESCRIPTION}")
 set(PostgreSQL_LIBRARY_PATH_DESCRIPTION "top-level directory containing the PostgreSQL libraries.")
@@ -244,10 +257,18 @@ if (PostgreSQL_INCLUDE_DIR)
   unset(pgsql_version_str)
 endif()
 
+if("Server" IN_LIST PostgreSQL_FIND_COMPONENTS)
+  set(PostgreSQL_Server_FOUND TRUE)
+  if(NOT PostgreSQL_TYPE_INCLUDE_DIR)
+    set(PostgreSQL_Server_FOUND FALSE)
+  endif()
+endif()
+
 # Did we find anything?
 include(${CMAKE_CURRENT_LIST_DIR}/FindPackageHandleStandardArgs.cmake)
 find_package_handle_standard_args(PostgreSQL
                                   REQUIRED_VARS PostgreSQL_LIBRARY PostgreSQL_INCLUDE_DIR
+                                  HANDLE_COMPONENTS
                                   VERSION_VAR PostgreSQL_VERSION_STRING)
 set(PostgreSQL_FOUND  ${POSTGRESQL_FOUND})
 
@@ -275,7 +296,7 @@ if(PostgreSQL_FOUND)
   if(PostgreSQL_TYPE_INCLUDE_DIR)
     list(APPEND PostgreSQL_INCLUDE_DIRS ${PostgreSQL_TYPE_INCLUDE_DIR})
   endif()
-  set(PostgreSQL_LIBRARY_DIRS ${PostgreSQL_LIBRARY_DIR} )
+  set(PostgreSQL_LIBRARY_DIRS ${PostgreSQL_LIBRARY_DIR})
   if (NOT TARGET PostgreSQL::PostgreSQL)
     add_library(PostgreSQL::PostgreSQL UNKNOWN IMPORTED)
     set_target_properties(PostgreSQL::PostgreSQL PROPERTIES
@@ -287,3 +308,5 @@ if(PostgreSQL_FOUND)
 endif()
 
 mark_as_advanced(PostgreSQL_INCLUDE_DIR PostgreSQL_TYPE_INCLUDE_DIR)
+
+cmake_policy(POP)