feat: define the thread config header via cmake

Author: aminya

CMakeLists.txt

@@ -11,9 +11,12 @@ ENDIF(CMAKE_INSTALL_PREFIX_INITIALIZED_TO_DEFAULT)
 OPTION(ENABLE_THREADS "Enable threads" OFF)
 
 IF(${ENABLE_THREADS})
+  set(UNQLITE_ENABLE_THREADS ON)
   ADD_DEFINITIONS("-DUNQLITE_ENABLE_THREADS")
 ENDIF(${ENABLE_THREADS})
 
+configure_file(./src/config.h.in ./src/config.h)
+
 INCLUDE_DIRECTORIES(${CMAKE_CURRENT_LIST_DIR}/src)
 
 SET(HEADERS_UNQLITE

src/config.h

@@ -0,0 +1,6 @@
+#ifndef _UNQLITE_CONFIG_H_
+#define _UNQLITE_CONFIG_H_
+
+/* #undef UNQLITE_ENABLE_THREADS */
+
+#endif

src/config.h.in

@@ -0,0 +1,6 @@
+#ifndef _UNQLITE_CONFIG_H_
+#define _UNQLITE_CONFIG_H_
+
+#cmakedefine UNQLITE_ENABLE_THREADS
+
+#endif

src/unqlite.h

@@ -1,6 +1,9 @@
 /* This file was automatically generated.  Do not edit (Except for compile time directives)! */ 
 #ifndef _UNQLITE_H_
 #define _UNQLITE_H_
+
+#include "./config.h"
+
 /*
  * Symisc UnQLite: An Embeddable NoSQL (Post Modern) Database Engine.
  * Copyright (C) 2012-2013, Symisc Systems http://unqlite.org/