begin using autoconf features in cmake

CMakeLists.txt

@@ -3,6 +3,17 @@ project (arda-server C)
 
 enable_testing()
 
+INCLUDE (CheckIncludeFiles)
+INCLUDE (CheckSymbolExists)
+CHECK_INCLUDE_FILES (stdbool.h HAVE_STDBOOL_H)
+CHECK_SYMBOL_EXISTS (_Bool "stdbool.h" HAVE__BOOL)
+CHECK_INCLUDE_FILES (strings.h HAVE_STRINGS_H)
+
+CONFIGURE_FILE (
+    ${CMAKE_CURRENT_SOURCE_DIR}/config.h.in
+    ${CMAKE_BINARY_DIR}/include/config.h)
+INCLUDE_DIRECTORIES (${CMAKE_BINARY_DIR}/include)
+
 find_package (Lua 5 REQUIRED)
 find_package (ToLua REQUIRED)
 find_package (LibXml2 REQUIRED)

config.h.in

@@ -0,0 +1,3 @@
+#cmakedefine HAVE_STDBOOL_H 1
+#cmakedefine HAVE__BOOL 1
+#cmakedefine HAVE_STRINGS_H 1

core/src/CMakeLists.txt

@@ -3,7 +3,7 @@ project (eressea C)
 
 IF(CMAKE_COMPILER_IS_GNUCC)
     SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -pedantic -Wall -Werror -Wno-unknown-pragmas -Wstrict-prototypes -Wpointer-arith -Wno-char-subscripts -Wno-long-long")
-    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99 -DHAVE__BOOL")
+    SET(CMAKE_C_FLAGS "${CMAKE_C_FLAGS} -std=c99")
 ENDIF(CMAKE_COMPILER_IS_GNUCC)
 
 set (ERESSEA_LIBRARY ${PROJECT_NAME} CACHE INTERNAL "Eressea Core Library")

core/src/util/bool.h

@@ -1,3 +1,4 @@
+#include <config.h>
 #if HAVE_STDBOOL_H
 # include <stdbool.h>
 #else