Add CMake checking for Berkeley DB

Rather than hard coding the fact we build in Berkeley DB support,
actually check for the existence of the library and only build it if we
find it.

diff --git a/cmake/FindBDB.cmake b/cmake/FindBDB.cmake
new file mode 100644 (file)
index 0000000..aa82c1a
--- /dev/null
+++ b/cmake/FindBDB.cmake
@@ -0,0 +1,24 @@
+# No pkg-config support in Berkeley DB, so try to find it manually
+
+set(BDB_PREFIX "" CACHE PATH "path ")
+
+find_path(BDB_INCLUDE_DIR db.h
+       PATHS ${BDB_PREFIX}/include /usr/include /usr/local/include)
+
+find_library(BDB_LIBRARY NAMES db
+       PATHS ${BDB_PREFIX}/lib /usr/lib /usr/local/lib)
+
+if(BDB_INCLUDE_DIR AND BDB_LIBRARY)
+       get_filename_component(BDB_LIBRARY_DIR ${BDB_LIBRARY} PATH)
+       set(BDB_FOUND TRUE)
+endif()
+
+if(BDB_FOUND)
+       if(NOT BDB_FIND_QUIETLY)
+               MESSAGE(STATUS "Found Berkeley DB: ${BDB_LIBRARY}")
+       endif()
+elseif(BDB_FOUND)
+       if(BDB_FIND_REQUIRED)
+               message(FATAL_ERROR "Could not find Berkeley DB")
+       endif()
+endif()

diff --git a/keydb/CMakeLists.txt b/keydb/CMakeLists.txt
index 35911f6421c7e4fcb1d92328c6108951a6899f64..3d09dc4b065acb0ea9f60beb7bb1e6f7fe0ae9ed 100644 (file)
--- a/keydb/CMakeLists.txt
+++ b/keydb/CMakeLists.txt
@@ -4,8 +4,11 @@
 set(BACKENDS "file" "fs" "keyring" "stacked")
 
 # DB4 backend (add check for existence)
-LIST(APPEND BACKENDS db4)
-set(BACKEND_db4_LIBS db-5.3)
+find_package(BDB)
+if (BDB_FOUND)
+       LIST(APPEND BACKENDS db4)
+       set(BACKEND_db4_LIBS db)
+endif()
 
 # HKP backend - needs libcurl
 pkg_check_modules(CURL libcurl)