Add and use FindSQLite.cmake

Added a find_package module for SQLite development libraries.

cmake/FindSQLite.cmake

@@ -0,0 +1,23 @@
+# This CMake file locates the SQLite3 development libraries
+#
+# The following variables are set:
+# SQLITE_FOUND - If the SQLite library was found
+# SQLITE_LIBRARIES - Path to the static library
+# SQLITE_INCLUDE_DIR - Path to SQLite headers
+# SQLITE_VERSION - Library version
+
+find_path(SQLITE_INCLUDE_DIR sqlite3.h)
+find_library(SQLITE_LIBRARIES NAMES libsqlite3.so)
+
+if (SQLITE_INCLUDE_DIR AND SQLITE_LIBRARIES)
+
+  execute_process(COMMAND grep ".*#define.*SQLITE_VERSION " ${SQLITE_INCLUDE_DIR}/sqlite3.h
+    COMMAND sed "s/.*\"\\(.*\\)\".*/\\1/"
+    OUTPUT_VARIABLE SQLITE_VERSION
+    OUTPUT_STRIP_TRAILING_WHITESPACE)
+
+  message(STATUS "Found SQLite version ${SQLITE_VERSION}: ${SQLITE_LIBRARIES}")
+  set(SQLITE_FOUND TRUE)
+else()
+  message(STATUS "Could not find SQLite")
+endif()