[CMake] Drop the HAVE_CONFIG_H define

This was an autotools leftover - CMake is always guaranteed to write the config file.
Also, rename the WZ-specific generated "config.h" to "wz2100-generated-config.h".

CMakeLists.txt

@@ -686,8 +686,6 @@ macro(CONFIGURE_WZ_COMPILER_WARNINGS)
 	endif()
 endmacro(CONFIGURE_WZ_COMPILER_WARNINGS)
 
-add_definitions("-DHAVE_CONFIG_H")
-
 # CMAKE_CURRENT_BINARY_DIR should come before the current source directory
 # so that any build products are preferentially included over in-source build
 # products that might have been generated by a different compilation method / run
@@ -794,7 +792,7 @@ function(CHECK_IS_ABSOLUTE_PATH _var _output)
 endfunction()
 CHECK_IS_ABSOLUTE_PATH(WZ_DATADIR WZ_DATADIR_ISABSOLUTE)
 CHECK_IS_ABSOLUTE_PATH(WZ_LOCALEDIR WZ_LOCALEDIR_ISABSOLUTE)
-CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/config.h)
+CONFIGURE_FILE(${CMAKE_CURRENT_SOURCE_DIR}/src/config.h.in ${CMAKE_CURRENT_BINARY_DIR}/wz2100-generated-config.h)
 
 # Attempt to find Miniupnpc (minimum supported API version = 9)
 # NOTE: This is not available on every platform / distro

lib/framework/types.h

@@ -31,10 +31,9 @@
 #define __STDC_LIMIT_MACROS
 #endif
 
-#if defined(HAVE_CONFIG_H)
-#  undef _XOPEN_SOURCE
-#  include "config.h"
-#endif
+// Always include generated config.h
+#undef _XOPEN_SOURCE
+#include "wz2100-generated-config.h"
 
 #include <stddef.h> // for size_t
 

lib/framework/wzglobal.h

@@ -34,15 +34,9 @@
 #define __STDC_LIMIT_MACROS
 #endif
 
-#if defined(HAVE_CONFIG_H)
-#  undef _XOPEN_SOURCE
-#  include "config.h"
-#elif !defined(HAVE_CONFIG_H)
-#  define PACKAGE "warzone2100"
-#  define PACKAGE_BUGREPORT "http://wz2100.net/"
-#  define PACKAGE_NAME "Warzone 2100"
-#  define PACKAGE_TARNAME "warzone2100"
-#endif
+// Always include generated config.h
+#undef _XOPEN_SOURCE
+#include "wz2100-generated-config.h"
 
 
 /* ---- Platform detection ---- */

src/input/manager.cpp

@@ -27,7 +27,6 @@
 
 #include "manager.h"
 #include "context.h"
-#include "config.h"
 #include "mapping.h"
 
 #include "../keybind.h"