Quelle  config_options.h.in

/*
 * General configuration settings for various options.
 */

#ifndef CONFIG_OPTIONS_H
#define CONFIG_OPTIONS_H

#define ENABLE_MERGELIBS 0

#define ENABLE_MERGELIBS_MORE 0

#define ENABLE_PCH 0

#define ENABLE_RUNTIME_OPTIMIZATIONS 0

// Used to turn off visibility for some classes/symbols when linking with --enable-mergelibs
//
#if ENABLE_MERGELIBS
#define UNLESS_MERGELIBS(x)
#else
#define UNLESS_MERGELIBS(x) x
#endif
#if ENABLE_MERGELIBS
#define IF_MERGELIBS(x) x
#else
#define IF_MERGELIBS(x)
#endif

// Used to turn off visibility for some classes/symbols when linking with --enable-mergelibs=more
//
#if ENABLE_MERGELIBS_MORE
#define UNLESS_MERGELIBS_MORE(x)
#else
#define UNLESS_MERGELIBS_MORE(x) x
#endif
#if ENABLE_MERGELIBS_MORE
#define IF_MERGELIBS_MORE(x) x
#else
#define IF_MERGELIBS_MORE(x)
#endif

#endif