+# Configuration
+#-----------------------------------------------------------------------------
+
+set(BUILD_IMPORTER on CACHE BOOL "Build everything for importing/updating the database")
+set(BUILD_API on CACHE BOOL "Build everything for the API server")
+set(BUILD_MODULE on CACHE BOOL "Build PostgreSQL module")
+set(BUILD_TESTS on CACHE BOOL "Build test suite")
+set(BUILD_DOCS on CACHE BOOL "Build documentation")
+set(BUILD_OSM2PGSQL on CACHE BOOL "Build osm2pgsql (expert only)")
+
+#-----------------------------------------------------------------------------
+# osm2pgsql (imports/updates only)
+#-----------------------------------------------------------------------------
+
+if (BUILD_IMPORTER AND BUILD_OSM2PGSQL)
+ if (NOT EXISTS "${CMAKE_SOURCE_DIR}/osm2pgsql/CMakeLists.txt")
+ message(FATAL_ERROR "The osm2pgsql directory is empty.\
+ Did you forget to check out Nominatim recursively?\
+ \nTry updating submodules with: git submodule update --init")
+ endif()
+ set(BUILD_TESTS_SAVED "${BUILD_TESTS}")
+ set(BUILD_TESTS off)
+ set(WITH_LUA off CACHE BOOL "")
+ add_subdirectory(osm2pgsql)
+ set(BUILD_TESTS ${BUILD_TESTS_SAVED})
+endif()
+
+
+#-----------------------------------------------------------------------------
+# python and pyosmium (imports/updates only)
+#-----------------------------------------------------------------------------
+
+if (BUILD_IMPORTER)
+ find_package(PythonInterp 3)
+
+ find_program(PYOSMIUM pyosmium-get-changes)
+ if (NOT EXISTS "${PYOSMIUM}")
+ set(PYOSMIUM_PATH "")
+ message(WARNING "pyosmium-get-changes not found (required for updates)")
+ else()
+ set(PYOSMIUM_PATH "${PYOSMIUM}")
+ message(STATUS "Using pyosmium-get-changes at ${PYOSMIUM_PATH}")
+ endif()
+endif()
+
+#-----------------------------------------------------------------------------
+# PHP
+#-----------------------------------------------------------------------------
+
+# Setting PHP binary variable as to command line (prevailing) or auto detect
+
+if (BUILD_API OR BUILD_IMPORTER)
+ if (NOT PHP_BIN)
+ find_program (PHP_BIN php)
+ endif()
+ # sanity check if PHP binary exists
+ if (NOT EXISTS ${PHP_BIN})
+ message(FATAL_ERROR "PHP binary not found. Install php or provide location with -DPHP_BIN=/path/php ")
+ endif()
+ message (STATUS "Using PHP binary " ${PHP_BIN})
+endif()
+
+#-----------------------------------------------------------------------------
+# import scripts and utilities (importer only)