From dbe835e48547ef137957cd49399a057dc058bfed Mon Sep 17 00:00:00 2001
From: Enno Rehling <enno.rehling@gmail.com>
Date: Thu, 16 Nov 2017 18:30:18 +0100
Subject: [PATCH] add cmake directives to build with Berkeley DB

---
 CMakeLists.txt                     |  1 +
 cmake/Modules/FindBerkeleyDB.cmake | 50 ++++++++++++++++++++++++++++++
 src/CMakeLists.txt                 |  9 ++++++
 3 files changed, 60 insertions(+)
 create mode 100644 cmake/Modules/FindBerkeleyDB.cmake

diff --git a/CMakeLists.txt b/CMakeLists.txt
index d9c15fa52..4aa4ca472 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -12,6 +12,7 @@ include(MSVC)
 endif (MSVC)
 
 find_package (SQLite3)
+find_package (BerkeleyDB)
 find_package (Curses)
 find_package (LibXml2)
 find_package (ToLua REQUIRED)
diff --git a/cmake/Modules/FindBerkeleyDB.cmake b/cmake/Modules/FindBerkeleyDB.cmake
new file mode 100644
index 000000000..88b0621fe
--- /dev/null
+++ b/cmake/Modules/FindBerkeleyDB.cmake
@@ -0,0 +1,50 @@
+# -*- cmake -*-
+
+# - Find BerkeleyDB
+# Find the BerkeleyDB includes and library
+# This module defines
+#  DB_INCLUDE_DIR, where to find db.h, etc.
+#  DB_LIBRARIES, the libraries needed to use BerkeleyDB.
+#  DB_FOUND, If false, do not try to use BerkeleyDB.
+# also defined, but not for general use are
+#  DB_LIBRARY, where to find the BerkeleyDB library.
+
+FIND_PATH(DB_INCLUDE_DIR db.h
+  /usr/local/include/db4
+  /usr/local/include
+  /usr/include/db4
+  /usr/include
+  )
+
+SET(DB_NAMES ${DB_NAMES} db)
+FIND_LIBRARY(DB_LIBRARY
+  NAMES ${DB_NAMES}
+  PATHS /usr/lib /usr/local/lib
+  )
+
+IF (DB_LIBRARY AND DB_INCLUDE_DIR)
+  SET(DB_LIBRARIES ${DB_LIBRARY})
+  SET(DB_FOUND "YES")
+ELSE (DB_LIBRARY AND DB_INCLUDE_DIR)
+  SET(DB_FOUND "NO")
+ENDIF (DB_LIBRARY AND DB_INCLUDE_DIR)
+
+
+IF (DB_FOUND)
+  IF (NOT DB_FIND_QUIETLY)
+    MESSAGE(STATUS "Found BerkeleyDB: ${DB_LIBRARIES}")
+  ENDIF (NOT DB_FIND_QUIETLY)
+ELSE (DB_FOUND)
+  IF (DB_FIND_REQUIRED)
+    MESSAGE(FATAL_ERROR "Could not find BerkeleyDB library")
+  ENDIF (DB_FIND_REQUIRED)
+ENDIF (DB_FOUND)
+
+# Deprecated declarations.
+SET (NATIVE_DB_INCLUDE_PATH ${DB_INCLUDE_DIR} )
+GET_FILENAME_COMPONENT (NATIVE_DB_LIB_PATH ${DB_LIBRARY} PATH)
+
+MARK_AS_ADVANCED(
+  DB_LIBRARY
+  DB_INCLUDE_DIR
+  )
diff --git a/src/CMakeLists.txt b/src/CMakeLists.txt
index c5b1b40b2..987c6d2be 100644
--- a/src/CMakeLists.txt
+++ b/src/CMakeLists.txt
@@ -265,7 +265,16 @@ add_test(server test_eressea)
 
 install(TARGETS eressea DESTINATION "bin")
 
+if (DB_FOUND)
+include_directories (${DB_INCLUDE_DIR})
+target_link_libraries(convert ${DB_LIBRARIES})
+target_link_libraries(eressea ${DB_LIBRARIES})
+target_link_libraries(test_eressea ${DB_LIBRARIES})
+add_definitions(-DUSE_DB)
+endif(DB_FOUND)
+
 if (SQLITE3_FOUND)
+include_directories (${SQLITE3_INCLUDE_DIR})
 target_link_libraries(eressea ${SQLITE3_LIBRARIES})
 target_link_libraries(convert ${SQLITE3_LIBRARIES})
 target_link_libraries(test_eressea ${SQLITE3_LIBRARIES})