netsurf/utils/config.h

/*
 * Copyright 2003-7 John M Bell <jmb202@ecs.soton.ac.uk>
 *
 * This file is part of NetSurf, http://www.netsurf-browser.org/
 *
 * NetSurf is free software; you can redistribute it and/or modify
 * it under the terms of the GNU General Public License as published by
 * the Free Software Foundation; version 2 of the License.
 *
 * NetSurf is distributed in the hope that it will be useful,
 * but WITHOUT ANY WARRANTY; without even the implied warranty of
 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 * GNU General Public License for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program.  If not, see <http://www.gnu.org/licenses/>.
 */

#ifndef NETSURF_UTILS_CONFIG_H_
#define NETSURF_UTILS_CONFIG_H_

#include <stddef.h>

#if defined(__NetBSD__)
#include <sys/param.h>
#if (defined(__NetBSD_Version__) && __NetBSD_Prereq__(8,0,0))
#define NetBSD_v8
#endif
#endif

/* Try to detect which features the target OS supports */

#if (defined(_GNU_SOURCE) && \
     !defined(__APPLE__) || \
     defined(__amigaos4__) || \
     defined(__HAIKU__) || \
     (defined(_POSIX_C_SOURCE) && ((_POSIX_C_SOURCE - 0) >= 200809L)) && \
     !defined(__riscos__))
#define HAVE_STRNDUP
#else
#undef HAVE_STRNDUP
char *strndup(const char *s, size_t n);
#endif

#if ((defined(_GNU_SOURCE) ||			\
      defined(__APPLE__) ||			\
      defined(__HAIKU__) ||			\
      defined(__NetBSD__) ||			\
      defined(__OpenBSD__)) &&			\
     !defined(__serenity__))
#define HAVE_STRCASESTR
#else
#undef HAVE_STRCASESTR
char *strcasestr(const char *haystack, const char *needle);
#endif

/* Although these platforms might have strftime or strptime they
 *  appear not to support the time_t seconds format specifier.
 */
#if (defined(_WIN32) ||	      \
     defined(__riscos__) ||   \
     defined(__HAIKU__) ||    \
     defined(__BEOS__) ||     \
     defined(__amigaos4__) || \
     defined(__AMIGA__) ||    \
     defined(__MINT__))
#undef HAVE_STRPTIME
#undef HAVE_STRFTIME
#else
#define HAVE_STRPTIME
#define HAVE_STRFTIME
#endif

/* For some reason, UnixLib defines this unconditionally. Assume we're using
 *  UnixLib if building for RISC OS.
 */
#if ((defined(_GNU_SOURCE) && !defined(__APPLE__)) ||	\
     defined(__riscos__) || \
     defined(NetBSD_v8))
#define HAVE_STRCHRNUL
#else
#undef HAVE_STRCHRNUL
char *strchrnul(const char *s, int c);
#endif

/*
 * amigaos3 declares this but does not have it in its actual library
 */
#define HAVE_STRTOULL
#if !defined(__amigaos4__) && defined(__AMIGA__)
#undef HAVE_STRTOULL
#endif

#define HAVE_SYS_SELECT
#define HAVE_POSIX_INET_HEADERS
#if (defined(_WIN32))
#undef HAVE_SYS_SELECT
#undef HAVE_POSIX_INET_HEADERS
#endif

#define HAVE_INETATON
#if (defined(_WIN32) || \
     defined(__serenity__))
#undef HAVE_INETATON
#endif

#define HAVE_INETPTON
#if (defined(_WIN32))
#undef HAVE_INETPTON
#endif

#define HAVE_UTSNAME
#if (defined(_WIN32))
#undef HAVE_UTSNAME
#endif

#define HAVE_REALPATH
#if (defined(_WIN32))
#undef HAVE_REALPATH
char *realpath(const char *path, char *resolved_path);
#endif

#define HAVE_MKDIR
#if (defined(_WIN32))
#undef HAVE_MKDIR
#endif

#define HAVE_SIGPIPE
#if (defined(_WIN32))
#undef HAVE_SIGPIPE
#endif

#define HAVE_STDOUT
#if (defined(_WIN32))
#undef HAVE_STDOUT
#endif

#define HAVE_MMAP
#if (defined(_WIN32) || defined(__riscos__) || defined(__HAIKU__) || defined(__BEOS__) || defined(__amigaos4__) || defined(__AMIGA__) || defined(__MINT__))
#undef HAVE_MMAP
#endif

#define HAVE_SCANDIR
#if (defined(_WIN32) ||				\
     defined(__serenity__))
#undef HAVE_SCANDIR
#endif

#define HAVE_REGEX
#if (defined(__serenity__))
#undef HAVE_REGEX
#endif

/* execinfo available for backtrace */
#if ((defined(__linux__) && defined(__GLIBC__) && !defined(__UCLIBC__)) || \
     defined(__APPLE__))
#define HAVE_EXECINFO
#endif

/* This section toggles build options on and off.
 * Simply undefine a symbol to turn the relevant feature off.
 *
 * IF ADDING A FEATURE HERE, ADD IT TO Docs/Doxyfile's "PREDEFINED" DEFINITION AS WELL.
 */

/* Platform specific features */
#if defined(riscos)
    /* Theme auto-install */
    #define WITH_THEME_INSTALL
#elif defined(__HAIKU__) || defined(__BEOS__)
    /* for intptr_t */
    #include <inttypes.h>
    #if defined(__HAIKU__)
        /*not yet: #define WITH_MMAP*/
    #endif
    #if defined(__BEOS__)
    	/* Not even BONE has it. */
    	#define NO_IPV6 1
    #endif
#else
    /* We're likely to have a working mmap() */
    #define WITH_MMAP
#endif

/* IPv6 */
#if (defined(__amigaos4__) ||			\
     defined(__AMIGA__) ||			\
     defined(nsatari) ||			\
     defined(__serenity__))
	#define NO_IPV6
#endif

#endif