Fix bad usage of bswap

Author: BenWiederhake

configure

@@ -2308,102 +2308,6 @@ ac_config_headers="$ac_config_headers config.h"
 
 
 
-# ===========================================================================
-#      http://www.gnu.org/software/autoconf-archive/ax_gcc_builtin.html
-# ===========================================================================
-#
-# SYNOPSIS
-#
-#   AX_GCC_BUILTIN(BUILTIN)
-#
-# DESCRIPTION
-#
-#   This macro checks if the compiler supports one of GCC's built-in
-#   functions; many other compilers also provide those same built-ins.
-#
-#   The BUILTIN parameter is the name of the built-in function.
-#
-#   If BUILTIN is supported define HAVE_<BUILTIN>. Keep in mind that since
-#   builtins usually start with two underscores they will be copied over
-#   into the HAVE_<BUILTIN> definition (e.g. HAVE___BUILTIN_EXPECT for
-#   __builtin_expect()).
-#
-#   The macro caches its result in the ax_cv_have_<BUILTIN> variable (e.g.
-#   ax_cv_have___builtin_expect).
-#
-#   The macro currently supports the following built-in functions:
-#
-#    __builtin_assume_aligned
-#    __builtin_bswap32
-#    __builtin_bswap64
-#    __builtin_choose_expr
-#    __builtin___clear_cache
-#    __builtin_clrsb
-#    __builtin_clrsbl
-#    __builtin_clrsbll
-#    __builtin_clz
-#    __builtin_clzl
-#    __builtin_clzll
-#    __builtin_complex
-#    __builtin_constant_p
-#    __builtin_ctz
-#    __builtin_ctzl
-#    __builtin_ctzll
-#    __builtin_expect
-#    __builtin_ffs
-#    __builtin_ffsl
-#    __builtin_ffsll
-#    __builtin_fpclassify
-#    __builtin_huge_val
-#    __builtin_huge_valf
-#    __builtin_huge_vall
-#    __builtin_inf
-#    __builtin_infd128
-#    __builtin_infd32
-#    __builtin_infd64
-#    __builtin_inff
-#    __builtin_infl
-#    __builtin_isinf_sign
-#    __builtin_nan
-#    __builtin_nand128
-#    __builtin_nand32
-#    __builtin_nand64
-#    __builtin_nanf
-#    __builtin_nanl
-#    __builtin_nans
-#    __builtin_nansf
-#    __builtin_nansl
-#    __builtin_object_size
-#    __builtin_parity
-#    __builtin_parityl
-#    __builtin_parityll
-#    __builtin_popcount
-#    __builtin_popcountl
-#    __builtin_popcountll
-#    __builtin_powi
-#    __builtin_powif
-#    __builtin_powil
-#    __builtin_prefetch
-#    __builtin_trap
-#    __builtin_types_compatible_p
-#    __builtin_unreachable
-#
-#   Unsuppored built-ins will be tested with an empty parameter set and the
-#   result of the check might be wrong or meaningless so use with care.
-#
-# LICENSE
-#
-#   Copyright (c) 2013 Gabriele Svelto <[email protected]>
-#
-#   Copying and distribution of this file, with or without modification, are
-#   permitted in any medium without royalty provided the copyright notice
-#   and this notice are preserved.  This file is offered as-is, without any
-#   warranty.
-
-#serial 2
-
-
-
 
 # Checks for programs.
 ac_ext=c
@@ -4593,51 +4497,6 @@ done
 
 
 
-
-    { $as_echo "$as_me:${as_lineno-$LINENO}: checking for __builtin_bswap32" >&5
-$as_echo_n "checking for __builtin_bswap32... " >&6; }
-if ${ax_cv_have___builtin_bswap32+:} false; then :
-  $as_echo_n "(cached) " >&6
-else
-
-        cat confdefs.h - <<_ACEOF >conftest.$ac_ext
-/* end confdefs.h.  */
-
-int
-main ()
-{
-
-            __builtin_bswap32(0)
-
-  ;
-  return 0;
-}
-_ACEOF
-if ac_fn_c_try_link "$LINENO"; then :
-  ax_cv_have___builtin_bswap32=yes
-else
-  ax_cv_have___builtin_bswap32=no
-fi
-rm -f core conftest.err conftest.$ac_objext \
-    conftest$ac_exeext conftest.$ac_ext
-
-fi
-{ $as_echo "$as_me:${as_lineno-$LINENO}: result: $ax_cv_have___builtin_bswap32" >&5
-$as_echo "$ax_cv_have___builtin_bswap32" >&6; }
-
-    if test yes = $ax_cv_have___builtin_bswap32; then :
-
-cat >>confdefs.h <<_ACEOF
-#define HAVE___BUILTIN_BSWAP32 1
-_ACEOF
-
-fi
-
-
-
-
-
-
 ac_config_files="$ac_config_files Makefile"
 
 cat >confcache <<\_ACEOF

configure.ac

@@ -5,7 +5,6 @@ AC_CONFIG_HEADERS([config.h])
 
 m4_include([m4_ax_check_openssl.m4])
 m4_include([m4_ax_check_zlib.m4])
-m4_include([m4-ax_gcc_builtin.m4])
 
 # Checks for programs.
 AC_PROG_CC
@@ -88,8 +87,6 @@ AC_FUNC_MALLOC
 AC_FUNC_REALLOC
 AC_CHECK_FUNCS([alarm endpwent memset memmove mkdir select socket strdup strndup uname])
 
-AX_GCC_BUILTIN(__builtin_bswap32)
-
 AC_SUBST(EXTRA_LIBS)
 AC_SUBST(EXTRA_OBJECTS)
 AC_CONFIG_FILES([Makefile])

m4-ax_gcc_builtin.m4

@@ -33,9 +33,6 @@
 #include <signal.h>
 #include <unistd.h>
 #include <fcntl.h>
-#if defined(__FreeBSD__) || defined(__OpenBSD__)
-#include <sys/endian.h>
-#endif
 #include <sys/types.h>
 #ifdef WIN32
 #include <winsock2.h>
@@ -67,14 +64,6 @@
 #include "auto.h"
 #include "tgl-methods-in.h"
 
-#if defined(__FreeBSD__)
-#define __builtin_bswap32(x) bswap32(x)
-#endif
-
-#if defined(__OpenBSD__)
-#define __builtin_bswap32(x) __swap32gen(x)
-#endif
-
 #include "mtproto-common.h"
 
 #define MAX_NET_RES        (1L << 16)
@@ -83,15 +72,6 @@
 static long long generate_next_msg_id (struct tgl_state *TLS, struct tgl_dc *DC, struct tgl_session *S);
 static double get_server_time (struct tgl_dc *DC);
 
-#if !defined(HAVE___BUILTIN_BSWAP32) && !defined(__FreeBSD__) && !defined(__OpenBSD__)
-static inline unsigned __builtin_bswap32(unsigned x) {
-  return ((x << 24) & 0xff000000 ) |
-  ((x << 8) & 0x00ff0000 ) |
-  ((x >> 8) & 0x0000ff00 ) |
-  ((x >> 24) & 0x000000ff );
-}
-#endif
-
 // for statistic only
 static int total_packets_sent;
 static long long total_data_sent;