1# acx_nlnetlabs.m4 - common macros for configure checks 2# Copyright 2009-2011, NLnet Labs, Wouter Wijngaards. 3# BSD licensed. 4# 5# Version 10 6# 2010-07-02 Add check for ss_family (for minix). 7# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS. 8# 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end. 9# 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS seperate, -ldl 10# 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN 11# 2010-01-20 added AHX_COONFIG_STRLCAT 12# 2009-07-14 U_CHAR detection improved for windows crosscompile. 13# added ACX_FUNC_MALLOC 14# fixup some #if to #ifdef 15# NONBLOCKING test for mingw crosscompile. 16# 2009-07-13 added ACX_WITH_SSL_OPTIONAL 17# 2009-07-03 fixup LDFLAGS for empty ssl dir. 18# 19# Automates some of the checking constructs. Aims at portability for POSIX. 20# Documentation for functions is below. 21# 22# the following macro's are provided in this file: 23# (see below for details on each macro). 24# 25# ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc. 26# ACX_RSRC_VERSION - create windows resource version number. 27# ACX_CHECK_COMPILER_FLAG - see if cc supports a flag. 28# ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below). 29# ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly. 30# ACX_DEPFLAG - find cc dependency flags. 31# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX. 32# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax. 33# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax. 34# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved. 35# ACX_TYPE_U_CHAR - u_char type. 36# ACX_TYPE_RLIM_T - rlim_t type. 37# ACX_TYPE_SOCKLEN_T - socklen_t type. 38# ACX_TYPE_IN_ADDR_T - in_addr_t type. 39# ACX_TYPE_IN_PORT_T - in_port_t type. 40# ACX_ARG_RPATH - add --disable-rpath option. 41# ACX_WITH_SSL - add --with-ssl option, link -lcrypto. 42# ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto, 43# where --without-ssl is also accepted 44# ACX_LIB_SSL - setup to link -lssl. 45# ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files. 46# ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably. 47# ACX_FUNC_DEPRECATED - see if func is deprecated. 48# ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work. 49# ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments. 50# ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably. 51# ACX_FUNC_MALLOC - check malloc, define replacement . 52# AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format. 53# AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused. 54# AHX_CONFIG_FSEEKO - define fseeko, ftello fallback. 55# AHX_CONFIG_RAND_MAX - define RAND_MAX if needed. 56# AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed. 57# AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed. 58# AHX_CONFIG_SNPRINTF - snprintf compat prototype 59# AHX_CONFIG_INET_PTON - inet_pton compat prototype 60# AHX_CONFIG_INET_NTOP - inet_ntop compat prototype 61# AHX_CONFIG_INET_ATON - inet_aton compat prototype 62# AHX_CONFIG_MEMMOVE - memmove compat prototype 63# AHX_CONFIG_STRLCAT - strlcat compat prototype 64# AHX_CONFIG_STRLCPY - strlcpy compat prototype 65# AHX_CONFIG_GMTIME_R - gmtime_r compat prototype 66# AHX_CONFIG_W32_SLEEP - w32 compat for sleep 67# AHX_CONFIG_W32_USLEEP - w32 compat for usleep 68# AHX_CONFIG_W32_RANDOM - w32 compat for random 69# AHX_CONFIG_W32_SRANDOM - w32 compat for srandom 70# AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T. 71# ACX_CFLAGS_STRIP - strip one flag from CFLAGS 72# ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS 73# AHX_CONFIG_FLAG_OMITTED - define omitted flag 74# AHX_CONFIG_FLAG_EXT - define omitted extension flag 75# AHX_CONFIG_EXT_FLAGS - define the stripped extension flags 76# ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters. 77# AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED. 78# ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 79# 80 81dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines. 82dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var) 83dnl $1: the text to change. 84dnl $2: the result. 85AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`" 86]) 87 88dnl Calculate comma separated windows-resource numbers from package version. 89dnl Picks the first three(,0) or four numbers out of the name. 90dnl $1: variable for the result 91AC_DEFUN([ACX_RSRC_VERSION], 92[$1=[`echo $PACKAGE_VERSION | sed -e 's/^[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*\([0-9]\).*$/\1,\2,\3,\4/' -e 's/^[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*\([0-9]\)[^0-9]*$/\1,\2,\3,0/' `] 93]) 94 95dnl Routine to help check for compiler flags. 96dnl Checks if the compiler will accept the flag. 97dnl $1: the flag without a - in front, so g to check -g. 98dnl $2: executed if yes 99dnl $3: executed if no 100AC_DEFUN([ACX_CHECK_COMPILER_FLAG], 101[ 102AC_REQUIRE([AC_PROG_CC]) 103AC_MSG_CHECKING(whether $CC supports -$1) 104cache=`echo $1 | sed 'y%.=/+-%___p_%'` 105AC_CACHE_VAL(cv_prog_cc_flag_$cache, 106[ 107echo 'void f(){}' >conftest.c 108if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then 109eval "cv_prog_cc_flag_$cache=yes" 110else 111eval "cv_prog_cc_flag_$cache=no" 112fi 113rm -f conftest conftest.o conftest.c 114]) 115if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then 116AC_MSG_RESULT(yes) 117: 118$2 119else 120AC_MSG_RESULT(no) 121: 122$3 123fi 124]) 125 126dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED 127dnl ERRFLAG: result, compiler flag to turn warnings into errors 128AC_DEFUN([ACX_CHECK_ERROR_FLAGS], 129[ 130ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"]) 131ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"], 132 [ERRFLAG="$ERRFLAG -errfmt"]) 133]) 134 135dnl Routine to help check for needed compiler flags. 136dnl $1: flags for CC 137dnl $2: the includes and code 138dnl $3: if the given code only compiles with the flag, execute argument 3 139dnl $4: if the given code compiles without the flag, execute argument 4 140dnl $5: with and without flag the compile fails, execute argument 5. 141AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED], 142[ 143AC_REQUIRE([AC_PROG_CC]) 144AC_REQUIRE([ACX_CHECK_ERROR_FLAGS]) 145AC_MSG_CHECKING(whether we need $1 as a flag for $CC) 146cache=AS_TR_SH($1) 147dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'` 148AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache, 149[ 150echo '$2' > conftest.c 151echo 'void f(){}' >>conftest.c 152if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then 153eval "cv_prog_cc_flag_needed_$cache=no" 154else 155[ 156if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then 157eval "cv_prog_cc_flag_needed_$cache=yes" 158else 159eval "cv_prog_cc_flag_needed_$cache=fail" 160#echo 'Test with flag fails too!' 161#cat conftest.c 162#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 163#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 164#exit 1 165fi 166] 167fi 168rm -f conftest conftest.c conftest.o 169]) 170if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then 171AC_MSG_RESULT(yes) 172: 173$3 174else 175if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then 176AC_MSG_RESULT(no) 177#echo 'Test with flag is no!' 178#cat conftest.c 179#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 180#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 181#exit 1 182: 183$4 184else 185AC_MSG_RESULT(failed) 186: 187$5 188fi 189fi 190]) 191 192dnl Check for CC dependency flag 193dnl DEPFLAG: set to flag that generates dependencies. 194AC_DEFUN([ACX_DEPFLAG], 195[ 196AC_MSG_CHECKING([$CC dependency flag]) 197echo 'void f(){}' >conftest.c 198if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then 199 DEPFLAG="-MM" 200else 201 if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then 202 DEPFLAG="-xM1" 203 else 204 DEPFLAG="-MM" # dunno do something 205 fi 206fi 207AC_MSG_RESULT($DEPFLAG) 208rm -f conftest.c 209AC_SUBST(DEPFLAG) 210]) 211 212dnl Determine flags that gives POSIX and BSD functionality. 213dnl CFLAGS is modified for the result. 214AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND], 215[ 216ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"]) 217ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"]) 218 219AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT]) 220 221ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE, 222[ 223#include "confdefs.h" 224#include <stdlib.h> 225#include <ctype.h> 226#include <sys/time.h> 227#ifdef HAVE_TIME_H 228#include <time.h> 229#endif 230#include <unistd.h> 231#include <netdb.h> 232#ifdef HAVE_GETOPT_H 233#include <getopt.h> 234#endif 235 236int test() { 237 int a; 238 char **opts = NULL; 239 struct timeval tv; 240 char *t; 241 time_t time = 0; 242 char *buf = NULL; 243 const char* str = NULL; 244 struct msghdr msg; 245 msg.msg_control = 0; 246 t = ctime_r(&time, buf); 247 tv.tv_usec = 10; 248 srandom(32); 249 a = getopt(2, opts, "a"); 250 a = isascii(32); 251 str = gai_strerror(0); 252 return a; 253} 254], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"]) 255 256ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE, 257[ 258#include "confdefs.h" 259#include <stdlib.h> 260#include <ctype.h> 261#include <sys/time.h> 262#ifdef HAVE_TIME_H 263#include <time.h> 264#endif 265#include <unistd.h> 266#include <netdb.h> 267#ifdef HAVE_GETOPT_H 268#include <getopt.h> 269#endif 270 271int test() { 272 int a; 273 char **opts = NULL; 274 struct timeval tv; 275 char *t; 276 time_t time = 0; 277 char *buf = NULL; 278 const char* str = NULL; 279 struct msghdr msg; 280 msg.msg_control = 0; 281 t = ctime_r(&time, buf); 282 tv.tv_usec = 10; 283 srandom(32); 284 a = getopt(2, opts, "a"); 285 a = isascii(32); 286 str = gai_strerror(0); 287 return a; 288} 289], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"]) 290 291ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG, 292[ 293#include <stdbool.h> 294#include <ctype.h> 295int test() { 296 int a = 0; 297 return a; 298} 299], [CFLAGS="$CFLAGS $C99FLAG"]) 300 301ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE, 302[ 303#include <ctype.h> 304 305int test() { 306 int a; 307 a = isascii(32); 308 return a; 309} 310], [CFLAGS="$CFLAGS -D_BSD_SOURCE"]) 311 312ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE, 313[ 314#include <netinet/in.h> 315 316int test() { 317 struct in6_pktinfo inf; 318 int a = (int)sizeof(inf); 319 return a; 320} 321], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 322 323# check again for GNU_SOURCE for setresgid. May fail if setresgid 324# is not available at all. -D_FRSRESGID is to make this check unique. 325# otherwise we would get the previous cached result. 326ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID, 327[ 328#include <unistd.h> 329 330int test() { 331 int a = setresgid(0,0,0); 332 a = setresuid(0,0,0); 333 return a; 334} 335], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 336 337ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112, 338[ 339#include "confdefs.h" 340#ifdef HAVE_TIME_H 341#include <time.h> 342#endif 343#include <netdb.h> 344 345int test() { 346 int a = 0; 347 char *t; 348 time_t time = 0; 349 char *buf = NULL; 350 const char* str = NULL; 351 t = ctime_r(&time, buf); 352 str = gai_strerror(0); 353 return a; 354} 355], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"]) 356 357ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__, 358[ 359#include "confdefs.h" 360#include <stdlib.h> 361#include <ctype.h> 362#include <sys/time.h> 363#ifdef HAVE_TIME_H 364#include <time.h> 365#endif 366#include <unistd.h> 367#ifdef HAVE_GETOPT_H 368#include <getopt.h> 369#endif 370 371int test() { 372 int a; 373 char **opts = NULL; 374 struct timeval tv; 375 tv.tv_usec = 10; 376 srandom(32); 377 a = getopt(2, opts, "a"); 378 a = isascii(32); 379 return a; 380} 381], [CFLAGS="$CFLAGS -D__EXTENSIONS__"]) 382 383])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND 384 385dnl Check the printf-format attribute (if any) 386dnl result in HAVE_ATTR_FORMAT. 387dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE. 388AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE], 389[AC_REQUIRE([AC_PROG_CC]) 390AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute) 391AC_CACHE_VAL(ac_cv_c_format_attribute, 392[ac_cv_c_format_attribute=no 393AC_TRY_COMPILE( 394[#include <stdio.h> 395void f (char *format, ...) __attribute__ ((format (printf, 1, 2))); 396void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2))); 397], [ 398 f ("%s", "str"); 399], 400[ac_cv_c_format_attribute="yes"], 401[ac_cv_c_format_attribute="no"]) 402]) 403 404AC_MSG_RESULT($ac_cv_c_format_attribute) 405if test $ac_cv_c_format_attribute = yes; then 406 AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute]) 407fi 408])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE 409 410dnl Setup ATTR_FORMAT config.h parts. 411dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also. 412AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE], 413[ 414#ifdef HAVE_ATTR_FORMAT 415# define ATTR_FORMAT(archetype, string_index, first_to_check) \ 416 __attribute__ ((format (archetype, string_index, first_to_check))) 417#else /* !HAVE_ATTR_FORMAT */ 418# define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */ 419#endif /* !HAVE_ATTR_FORMAT */ 420]) 421 422dnl Check how to mark function arguments as unused. 423dnl result in HAVE_ATTR_UNUSED. 424dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also. 425AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE], 426[AC_REQUIRE([AC_PROG_CC]) 427AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute) 428AC_CACHE_VAL(ac_cv_c_unused_attribute, 429[ac_cv_c_unused_attribute=no 430AC_TRY_COMPILE( 431[#include <stdio.h> 432void f (char *u __attribute__((unused))); 433], [ 434 f ("x"); 435], 436[ac_cv_c_unused_attribute="yes"], 437[ac_cv_c_unused_attribute="no"]) 438]) 439 440dnl Setup ATTR_UNUSED config.h parts. 441dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also. 442AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE], 443[ 444#if defined(DOXYGEN) 445# define ATTR_UNUSED(x) x 446#elif defined(__cplusplus) 447# define ATTR_UNUSED(x) 448#elif defined(HAVE_ATTR_UNUSED) 449# define ATTR_UNUSED(x) x __attribute__((unused)) 450#else /* !HAVE_ATTR_UNUSED */ 451# define ATTR_UNUSED(x) x 452#endif /* !HAVE_ATTR_UNUSED */ 453]) 454 455AC_MSG_RESULT($ac_cv_c_unused_attribute) 456if test $ac_cv_c_unused_attribute = yes; then 457 AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute]) 458fi 459])dnl 460 461dnl Pre-fun for ACX_LIBTOOL_C_ONLY 462AC_DEFUN([ACX_LIBTOOL_C_PRE], [ 463# skip these tests, we do not need them. 464AC_DEFUN([AC_PROG_F77], [:]) 465AC_DEFUN([AC_PROG_FC], [:]) 466AC_DEFUN([AC_PROG_CXX], [:]) 467AC_DEFUN([AC_PROG_CXXCPP], [:]) 468AC_DEFUN([AC_PROG_OBJC], [:]) 469AC_DEFUN([AC_PROG_OBJCCPP], [:]) 470AC_DEFUN([AC_LIBTOOL_CXX], [:]) 471AC_DEFUN([AC_LIBTOOL_F77], [:]) 472# always use ./libtool unless override from commandline (libtool=mylibtool) 473if test -z "$libtool"; then 474 libtool="./libtool" 475fi 476AC_SUBST(libtool) 477# avoid libtool max commandline length test on systems that fork slowly. 478AC_CANONICAL_HOST 479if echo "$host_os" | grep "sunos4" >/dev/null; then 480 lt_cv_sys_max_cmd_len=32750; 481fi 482AC_PATH_TOOL(AR, ar, [false]) 483if test $AR = false; then 484 AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it]) 485fi 486]) 487 488dnl Perform libtool check, portably, only for C 489AC_DEFUN([ACX_LIBTOOL_C_ONLY], [ 490dnl as a requirement so that is gets called before LIBTOOL 491dnl because libtools 'AC_REQUIRE' names are right after this one, before 492dnl this function contents. 493AC_REQUIRE([ACX_LIBTOOL_C_PRE]) 494AC_PROG_LIBTOOL 495]) 496 497dnl Detect if u_char type is defined, otherwise define it. 498AC_DEFUN([ACX_TYPE_U_CHAR], 499[AC_CHECK_TYPE([u_char], , 500 [AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [ 501AC_INCLUDES_DEFAULT 502#ifdef HAVE_WINSOCK2_H 503# include <winsock2.h> 504#endif 505]) ]) 506 507dnl Detect if rlim_t type is defined, otherwise define it. 508AC_DEFUN([ACX_TYPE_RLIM_T], 509[AC_CHECK_TYPE(rlim_t, , 510 [AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [ 511AC_INCLUDES_DEFAULT 512#ifdef HAVE_SYS_RESOURCE_H 513# include <sys/resource.h> 514#endif 515]) ]) 516 517dnl Detect if socklen_t type is defined, otherwise define it. 518AC_DEFUN([ACX_TYPE_SOCKLEN_T], 519[ 520AC_CHECK_TYPE(socklen_t, , 521 [AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [ 522AC_INCLUDES_DEFAULT 523#ifdef HAVE_SYS_SOCKET_H 524# include <sys/socket.h> 525#endif 526#ifdef HAVE_WS2TCPIP_H 527# include <ws2tcpip.h> 528#endif 529]) ]) 530 531dnl Detect if in_addr_t type is defined, otherwise define it. 532AC_DEFUN([ACX_TYPE_IN_ADDR_T], 533[ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [ 534AC_INCLUDES_DEFAULT 535#ifdef HAVE_SYS_TYPES_H 536# include <sys/types.h> 537#endif 538#ifdef HAVE_NETINET_IN_H 539# include <netinet/in.h> 540#endif 541]) ]) 542 543dnl Detect if in_port_t type is defined, otherwise define it. 544AC_DEFUN([ACX_TYPE_IN_PORT_T], 545[ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [ 546AC_INCLUDES_DEFAULT 547#ifdef HAVE_SYS_TYPES_H 548# include <sys/types.h> 549#endif 550#ifdef HAVE_NETINET_IN_H 551# include <netinet/in.h> 552#endif 553]) ]) 554 555dnl Add option to disable the evil rpath. Check whether to use rpath or not. 556dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool. 557AC_DEFUN([ACX_ARG_RPATH], 558[ 559AC_ARG_ENABLE(rpath, 560 [ --disable-rpath disable hardcoded rpath (default=enabled)], 561 enable_rpath=$enableval, enable_rpath=yes) 562if test "x$enable_rpath" = xno; then 563 dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.]) 564 AC_CONFIG_COMMANDS([disable-rpath], [ 565 sed < libtool > libtool-2 \ 566 's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/' 567 mv libtool-2 libtool 568 chmod 755 libtool 569 libtool="./libtool" 570 ]) 571fi 572]) 573 574dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is 575dnl an absolute path. 576dnl $1: the pathname to add. 577AC_DEFUN([ACX_RUNTIME_PATH_ADD], [ 578 if test "x$enable_rpath" = xyes; then 579 if echo "$1" | grep "^/" >/dev/null; then 580 RUNTIME_PATH="$RUNTIME_PATH -R$1" 581 fi 582 fi 583]) 584 585dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL 586dnl Takes one argument; the withval checked in those 2 functions 587dnl sets up the environment for the given openssl path 588AC_DEFUN([ACX_SSL_CHECKS], [ 589 withval=$1 590 if test x_$withval != x_no; then 591 AC_MSG_CHECKING(for SSL) 592 if test x_$withval = x_ -o x_$withval = x_yes; then 593 withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr" 594 fi 595 for dir in $withval; do 596 ssldir="$dir" 597 if test -f "$dir/include/openssl/ssl.h"; then 598 found_ssl="yes" 599 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.]) 600 dnl assume /usr/include is already in the include-path. 601 if test "$ssldir" != "/usr"; then 602 CPPFLAGS="$CPPFLAGS -I$ssldir/include" 603 LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir/include" 604 fi 605 break; 606 fi 607 done 608 if test x_$found_ssl != x_yes; then 609 AC_MSG_ERROR(Cannot find the SSL libraries in $withval) 610 else 611 AC_MSG_RESULT(found in $ssldir) 612 HAVE_SSL=yes 613 dnl assume /usr is already in the lib and dynlib paths. 614 if test "$ssldir" != "/usr" -a "$ssldir" != ""; then 615 LDFLAGS="$LDFLAGS -L$ssldir/lib" 616 LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib" 617 ACX_RUNTIME_PATH_ADD([$ssldir/lib]) 618 fi 619 620 AC_MSG_CHECKING([for HMAC_CTX_init in -lcrypto]) 621 LIBS="$LIBS -lcrypto" 622 LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto" 623 AC_TRY_LINK(, [ 624 int HMAC_CTX_init(void); 625 (void)HMAC_CTX_init(); 626 ], [ 627 AC_MSG_RESULT(yes) 628 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 629 [If you have HMAC_CTX_init]) 630 ], [ 631 AC_MSG_RESULT(no) 632 # check if -lwsock32 or -lgdi32 are needed. 633 BAKLIBS="$LIBS" 634 BAKSSLLIBS="$LIBSSL_LIBS" 635 LIBS="$LIBS -lgdi32" 636 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32" 637 AC_MSG_CHECKING([if -lcrypto needs -lgdi32]) 638 AC_TRY_LINK([], [ 639 int HMAC_CTX_init(void); 640 (void)HMAC_CTX_init(); 641 ],[ 642 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 643 [If you have HMAC_CTX_init]) 644 AC_MSG_RESULT(yes) 645 ],[ 646 AC_MSG_RESULT(no) 647 LIBS="$BAKLIBS" 648 LIBSSL_LIBS="$BAKSSLLIBS" 649 LIBS="$LIBS -ldl" 650 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 651 AC_MSG_CHECKING([if -lcrypto needs -ldl]) 652 AC_TRY_LINK([], [ 653 int HMAC_CTX_init(void); 654 (void)HMAC_CTX_init(); 655 ],[ 656 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 657 [If you have HMAC_CTX_init]) 658 AC_MSG_RESULT(yes) 659 ],[ 660 AC_MSG_RESULT(no) 661 AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required]) 662 ]) 663 ]) 664 ]) 665 fi 666 AC_SUBST(HAVE_SSL) 667 AC_SUBST(RUNTIME_PATH) 668 # openssl engine functionality needs dlopen(). 669 BAKLIBS="$LIBS" 670 AC_SEARCH_LIBS([dlopen], [dl]) 671 if test "$LIBS" != "$BAKLIBS"; then 672 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 673 fi 674 fi 675AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT]) 676AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT]) 677AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT]) 678])dnl End of ACX_SSL_CHECKS 679 680dnl Check for SSL, where SSL is mandatory 681dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 682dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 683dnl Checks main header files of SSL. 684dnl 685AC_DEFUN([ACX_WITH_SSL], 686[ 687AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], 688 [enable SSL (will check /usr/local/ssl 689 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ 690 ],[ 691 withval="yes" 692 ]) 693 if test x_$withval = x_no; then 694 AC_MSG_ERROR([Need SSL library to do digital signature cryptography]) 695 fi 696 ACX_SSL_CHECKS($withval) 697])dnl End of ACX_WITH_SSL 698 699dnl Check for SSL, where ssl is optional (--without-ssl is allowed) 700dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 701dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 702dnl Checks main header files of SSL. 703dnl 704AC_DEFUN([ACX_WITH_SSL_OPTIONAL], 705[ 706AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], 707 [enable SSL (will check /usr/local/ssl 708 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ 709 ],[ 710 withval="yes" 711 ]) 712 ACX_SSL_CHECKS($withval) 713])dnl End of ACX_WITH_SSL_OPTIONAL 714 715dnl Setup to use -lssl 716dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one). 717AC_DEFUN([ACX_LIB_SSL], 718[ 719# check if libssl needs libdl 720BAKLIBS="$LIBS" 721LIBS="-lssl $LIBS" 722AC_MSG_CHECKING([if libssl needs libdl]) 723AC_TRY_LINK_FUNC([SSL_CTX_new], [ 724 AC_MSG_RESULT([no]) 725 LIBS="$BAKLIBS" 726] , [ 727 AC_MSG_RESULT([yes]) 728 LIBS="$BAKLIBS" 729 AC_SEARCH_LIBS([dlopen], [dl]) 730]) ])dnl End of ACX_LIB_SSL 731 732dnl Setup to use very large files (>2Gb). 733dnl setups fseeko and its own 734AC_DEFUN([ACX_SYS_LARGEFILE], 735[ 736AC_SYS_LARGEFILE 737dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko 738ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1, 739[ 740#include <stdio.h> 741int test() { 742 int a = fseeko(stdin, 0, 0); 743 return a; 744} 745], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"]) 746]) 747 748dnl Check getaddrinfo. 749dnl Works on linux, solaris, bsd and windows(links winsock). 750dnl defines HAVE_GETADDRINFO, USE_WINSOCK. 751AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES], 752[AC_REQUIRE([AC_PROG_CC]) 753AC_MSG_CHECKING(for getaddrinfo) 754ac_cv_func_getaddrinfo=no 755AC_LINK_IFELSE( 756[ 757#ifdef __cplusplus 758extern "C" 759{ 760#endif 761char* getaddrinfo(); 762char* (*f) () = getaddrinfo; 763#ifdef __cplusplus 764} 765#endif 766int main() { 767 ; 768 return 0; 769} 770], 771dnl this case on linux, solaris, bsd 772[ac_cv_func_getaddrinfo="yes"], 773dnl no quick getaddrinfo, try mingw32 and winsock2 library. 774ORIGLIBS="$LIBS" 775LIBS="$LIBS -lws2_32" 776AC_LINK_IFELSE( 777AC_LANG_PROGRAM( 778[ 779#ifdef HAVE_WS2TCPIP_H 780#include <ws2tcpip.h> 781#endif 782], 783[ 784 (void)getaddrinfo(NULL, NULL, NULL, NULL); 785] 786), 787[ 788ac_cv_func_getaddrinfo="yes" 789dnl already: LIBS="$LIBS -lws2_32" 790AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 791USE_WINSOCK="1" 792], 793[ 794ac_cv_func_getaddrinfo="no" 795LIBS="$ORIGLIBS" 796]) 797) 798 799AC_MSG_RESULT($ac_cv_func_getaddrinfo) 800if test $ac_cv_func_getaddrinfo = yes; then 801 AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available]) 802fi 803])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES 804 805dnl check if a function is deprecated. defines DEPRECATED_func in config.h. 806dnl $1: function name 807dnl $2: C-statement that calls the function. 808dnl $3: includes for the program. 809dnl $4: executes if yes 810dnl $5: executes if no 811AC_DEFUN([ACX_FUNC_DEPRECATED], 812[ 813AC_REQUIRE([AC_PROG_CC]) 814AC_MSG_CHECKING(if $1 is deprecated) 815cache=`echo $1 | sed 'y%.=/+-%___p_%'` 816AC_CACHE_VAL(cv_cc_deprecated_$cache, 817[ 818echo '$3' >conftest.c 819echo 'void f(){ $2 }' >>conftest.c 820if test -z "`$CC -c conftest.c 2>&1 | grep deprecated`"; then 821eval "cv_cc_deprecated_$cache=no" 822else 823eval "cv_cc_deprecated_$cache=yes" 824fi 825rm -f conftest conftest.o conftest.c 826]) 827if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then 828AC_MSG_RESULT(yes) 829AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated]) 830: 831$4 832else 833AC_MSG_RESULT(no) 834: 835$5 836fi 837])dnl end of ACX_FUNC_DEPRECATED 838 839dnl check if select and nonblocking sockets actually work. 840dnl Needs fork(2) and select(2). 841dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from 842dnl a nonblocking socket do not work, a new call to select is necessary. 843AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN], 844[ 845AC_MSG_CHECKING([if nonblocking sockets work]) 846if echo $target | grep mingw32 >/dev/null; then 847 AC_MSG_RESULT([no (windows)]) 848 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 849else 850AC_RUN_IFELSE(AC_LANG_PROGRAM([ 851#include <stdio.h> 852#include <string.h> 853#include <stdlib.h> 854#include <fcntl.h> 855#include <errno.h> 856#ifdef HAVE_SYS_TYPES_H 857#include <sys/types.h> 858#endif 859#ifdef HAVE_SYS_SOCKET_H 860#include <sys/socket.h> 861#endif 862#ifdef HAVE_NETINET_IN_H 863#include <netinet/in.h> 864#endif 865#ifdef HAVE_ARPA_INET_H 866#include <arpa/inet.h> 867#endif 868#ifdef HAVE_UNISTD_H 869#include <unistd.h> 870#endif 871#ifdef HAVE_TIME_H 872#include <time.h> 873#endif 874],[[ 875 int port; 876 int sfd, cfd; 877 int num = 10; 878 int i, p; 879 struct sockaddr_in a; 880 /* test if select and nonblocking reads work well together */ 881 /* open port. 882 fork child to send 10 messages. 883 select to read. 884 then try to nonblocking read the 10 messages 885 then, nonblocking read must give EAGAIN 886 */ 887 888 port = 12345 + (time(0)%32); 889 sfd = socket(PF_INET, SOCK_DGRAM, 0); 890 if(sfd == -1) { 891 perror("socket"); 892 return 1; 893 } 894 memset(&a, 0, sizeof(a)); 895 a.sin_family = AF_INET; 896 a.sin_port = htons(port); 897 a.sin_addr.s_addr = inet_addr("127.0.0.1"); 898 if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 899 perror("bind"); 900 return 1; 901 } 902 if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) { 903 perror("fcntl"); 904 return 1; 905 } 906 907 cfd = socket(PF_INET, SOCK_DGRAM, 0); 908 if(cfd == -1) { 909 perror("client socket"); 910 return 1; 911 } 912 a.sin_port = 0; 913 if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 914 perror("client bind"); 915 return 1; 916 } 917 a.sin_port = htons(port); 918 919 /* no handler, causes exit in 10 seconds */ 920 alarm(10); 921 922 /* send and receive on the socket */ 923 if((p=fork()) == 0) { 924 for(i=0; i<num; i++) { 925 if(sendto(cfd, &i, sizeof(i), 0, 926 (struct sockaddr*)&a, sizeof(a)) < 0) { 927 perror("sendto"); 928 return 1; 929 } 930 } 931 } else { 932 /* parent */ 933 fd_set rset; 934 int x; 935 if(p == -1) { 936 perror("fork"); 937 return 1; 938 } 939 FD_ZERO(&rset); 940 FD_SET(sfd, &rset); 941 if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) { 942 perror("select"); 943 return 1; 944 } 945 i = 0; 946 while(i < num) { 947 if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) { 948 if(errno == EAGAIN) 949 continue; 950 perror("recv"); 951 return 1; 952 } 953 i++; 954 } 955 /* now we want to get EAGAIN: nonblocking goodness */ 956 errno = 0; 957 recv(sfd, &x, sizeof(x), 0); 958 if(errno != EAGAIN) { 959 perror("trying to recv again"); 960 return 1; 961 } 962 /* EAGAIN encountered */ 963 } 964 965 close(sfd); 966 close(cfd); 967]]), [ 968 AC_MSG_RESULT([yes]) 969], [ 970 AC_MSG_RESULT([no]) 971 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 972], [ 973 AC_MSG_RESULT([crosscompile(yes)]) 974]) 975fi 976])dnl End of ACX_CHECK_NONBLOCKING_BROKEN 977 978dnl Check if mkdir has one or two arguments. 979dnl defines MKDIR_HAS_ONE_ARG 980AC_DEFUN([ACX_MKDIR_ONE_ARG], 981[ 982AC_MSG_CHECKING([whether mkdir has one arg]) 983AC_TRY_COMPILE([ 984#include <stdio.h> 985#include <unistd.h> 986#ifdef HAVE_WINSOCK2_H 987#include <winsock2.h> 988#endif 989#ifdef HAVE_SYS_STAT_H 990#include <sys/stat.h> 991#endif 992], [ 993 (void)mkdir("directory"); 994], 995AC_MSG_RESULT(yes) 996AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.]) 997, 998AC_MSG_RESULT(no) 999) 1000])dnl end of ACX_MKDIR_ONE_ARG 1001 1002dnl Check for ioctlsocket function. works on mingw32 too. 1003AC_DEFUN([ACX_FUNC_IOCTLSOCKET], 1004[ 1005# check ioctlsocket 1006AC_MSG_CHECKING(for ioctlsocket) 1007AC_LINK_IFELSE(AC_LANG_PROGRAM([ 1008#ifdef HAVE_WINSOCK2_H 1009#include <winsock2.h> 1010#endif 1011], [ 1012 (void)ioctlsocket(0, 0, NULL); 1013]), [ 1014AC_MSG_RESULT(yes) 1015AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available]) 1016],[AC_MSG_RESULT(no)]) 1017])dnl end of ACX_FUNC_IOCTLSOCKET 1018 1019dnl detect malloc and provide malloc compat prototype. 1020dnl $1: unique name for compat code 1021AC_DEFUN([ACX_FUNC_MALLOC], 1022[ 1023 AC_FUNC_MALLOC 1024 if test "$ac_cv_func_malloc_0_nonnull" = no; then 1025 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.]) 1026 fi 1027]) 1028 1029dnl Define fallback for fseeko and ftello if needed. 1030AC_DEFUN([AHX_CONFIG_FSEEKO], 1031[ 1032#ifndef HAVE_FSEEKO 1033#define fseeko fseek 1034#define ftello ftell 1035#endif /* HAVE_FSEEKO */ 1036]) 1037 1038dnl Define RAND_MAX if not defined 1039AC_DEFUN([AHX_CONFIG_RAND_MAX], 1040[ 1041#ifndef RAND_MAX 1042#define RAND_MAX 2147483647 1043#endif 1044]) 1045 1046dnl Define MAXHOSTNAMELEN if not defined 1047AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN], 1048[ 1049#ifndef MAXHOSTNAMELEN 1050#define MAXHOSTNAMELEN 256 1051#endif 1052]) 1053 1054dnl Define IPV6_MIN_MTU if not defined 1055AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU], 1056[ 1057#ifndef IPV6_MIN_MTU 1058#define IPV6_MIN_MTU 1280 1059#endif /* IPV6_MIN_MTU */ 1060]) 1061 1062dnl provide snprintf, vsnprintf compat prototype 1063dnl $1: unique name for compat code 1064AC_DEFUN([AHX_CONFIG_SNPRINTF], 1065[ 1066#ifndef HAVE_SNPRINTF 1067#define snprintf snprintf_$1 1068#define vsnprintf vsnprintf_$1 1069#include <stdarg.h> 1070int snprintf (char *str, size_t count, const char *fmt, ...); 1071int vsnprintf (char *str, size_t count, const char *fmt, va_list arg); 1072#endif /* HAVE_SNPRINTF */ 1073]) 1074 1075dnl provide inet_pton compat prototype. 1076dnl $1: unique name for compat code 1077AC_DEFUN([AHX_CONFIG_INET_PTON], 1078[ 1079#ifndef HAVE_INET_PTON 1080#define inet_pton inet_pton_$1 1081int inet_pton(int af, const char* src, void* dst); 1082#endif /* HAVE_INET_PTON */ 1083]) 1084 1085dnl provide inet_ntop compat prototype. 1086dnl $1: unique name for compat code 1087AC_DEFUN([AHX_CONFIG_INET_NTOP], 1088[ 1089#ifndef HAVE_INET_NTOP 1090#define inet_ntop inet_ntop_$1 1091const char *inet_ntop(int af, const void *src, char *dst, size_t size); 1092#endif 1093]) 1094 1095dnl provide inet_aton compat prototype. 1096dnl $1: unique name for compat code 1097AC_DEFUN([AHX_CONFIG_INET_ATON], 1098[ 1099#ifndef HAVE_INET_ATON 1100#define inet_aton inet_aton_$1 1101int inet_aton(const char *cp, struct in_addr *addr); 1102#endif 1103]) 1104 1105dnl provide memmove compat prototype. 1106dnl $1: unique name for compat code 1107AC_DEFUN([AHX_CONFIG_MEMMOVE], 1108[ 1109#ifndef HAVE_MEMMOVE 1110#define memmove memmove_$1 1111void *memmove(void *dest, const void *src, size_t n); 1112#endif 1113]) 1114 1115dnl provide strlcat compat prototype. 1116dnl $1: unique name for compat code 1117AC_DEFUN([AHX_CONFIG_STRLCAT], 1118[ 1119#ifndef HAVE_STRLCAT 1120#define strlcat strlcat_$1 1121size_t strlcat(char *dst, const char *src, size_t siz); 1122#endif 1123]) 1124 1125dnl provide strlcpy compat prototype. 1126dnl $1: unique name for compat code 1127AC_DEFUN([AHX_CONFIG_STRLCPY], 1128[ 1129#ifndef HAVE_STRLCPY 1130#define strlcpy strlcpy_$1 1131size_t strlcpy(char *dst, const char *src, size_t siz); 1132#endif 1133]) 1134 1135dnl provide gmtime_r compat prototype. 1136dnl $1: unique name for compat code 1137AC_DEFUN([AHX_CONFIG_GMTIME_R], 1138[ 1139#ifndef HAVE_GMTIME_R 1140#define gmtime_r gmtime_r_$1 1141struct tm *gmtime_r(const time_t *timep, struct tm *result); 1142#endif 1143]) 1144 1145dnl provide w32 compat definition for sleep 1146AC_DEFUN([AHX_CONFIG_W32_SLEEP], 1147[ 1148#ifndef HAVE_SLEEP 1149#define sleep(x) Sleep((x)*1000) /* on win32 */ 1150#endif /* HAVE_SLEEP */ 1151]) 1152 1153dnl provide w32 compat definition for usleep 1154AC_DEFUN([AHX_CONFIG_W32_USLEEP], 1155[ 1156#ifndef HAVE_USLEEP 1157#define usleep(x) Sleep((x)/1000 + 1) /* on win32 */ 1158#endif /* HAVE_USLEEP */ 1159]) 1160 1161dnl provide w32 compat definition for random 1162AC_DEFUN([AHX_CONFIG_W32_RANDOM], 1163[ 1164#ifndef HAVE_RANDOM 1165#define random rand /* on win32, for tests only (bad random) */ 1166#endif /* HAVE_RANDOM */ 1167]) 1168 1169dnl provide w32 compat definition for srandom 1170AC_DEFUN([AHX_CONFIG_W32_SRANDOM], 1171[ 1172#ifndef HAVE_SRANDOM 1173#define srandom(x) srand(x) /* on win32, for tests only (bad random) */ 1174#endif /* HAVE_SRANDOM */ 1175]) 1176 1177dnl provide w32 compat definition for FD_SET_T 1178AC_DEFUN([AHX_CONFIG_W32_FD_SET_T], 1179[ 1180/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */ 1181#ifdef HAVE_WINSOCK2_H 1182#define FD_SET_T (u_int) 1183#else 1184#define FD_SET_T 1185#endif 1186]) 1187 1188dnl Remove an extension flag from CFLAGS, define replacement to be made. 1189dnl Used by ACX_STRIP_EXT_FLAGS. 1190dnl $1: the name of the flag, for example -D_GNU_SOURCE. 1191AC_DEFUN([ACX_CFLAGS_STRIP], 1192[ 1193 if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then 1194 CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`" 1195 AC_DEFINE(AS_TR_CPP(OMITTED_$1), 1, Put $1 define in config.h) 1196 fi 1197]) 1198 1199dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h 1200dnl use with ACX_DETERMINE_EXT_FLAGS. 1201AC_DEFUN([ACX_STRIP_EXT_FLAGS], 1202[ 1203 AC_MSG_NOTICE([Stripping extension flags...]) 1204 ACX_CFLAGS_STRIP(-D_GNU_SOURCE) 1205 ACX_CFLAGS_STRIP(-D_BSD_SOURCE) 1206 ACX_CFLAGS_STRIP(-D__EXTENSIONS__) 1207 ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112) 1208 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600) 1209 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1) 1210 ACX_CFLAGS_STRIP(-D_ALL_SOURCE) 1211 ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1) 1212]) dnl End of ACX_STRIP_EXT_FLAGS 1213 1214dnl define one omitted flag for config.h 1215dnl $1: flag name. -D_GNU_SOURCE 1216dnl $2: replacement define. _GNU_SOURCE 1217dnl $3: define value, 1 1218AC_DEFUN([AHX_CONFIG_FLAG_OMITTED], 1219[#if defined($1) && !defined($2) 1220#define $2 $3 1221[#]endif ]) 1222 1223dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags 1224dnl $1: the -DNAME or -DNAME=value string. 1225AC_DEFUN([AHX_CONFIG_FLAG_EXT], 1226[AHX_CONFIG_FLAG_OMITTED(AS_TR_CPP(OMITTED_$1),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,))) 1227]) 1228 1229dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS. 1230AC_DEFUN([AHX_CONFIG_EXT_FLAGS], 1231[AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE) 1232AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE) 1233AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__) 1234AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112) 1235AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600) 1236AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1) 1237AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE) 1238AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1) 1239]) 1240 1241dnl check if memcmp is using signed characters and replace if so. 1242AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED], 1243[AC_MSG_CHECKING([if memcmp compares unsigned]) 1244AC_RUN_IFELSE([AC_LANG_SOURCE([[ 1245#include <stdio.h> 1246#include <stdlib.h> 1247#include <string.h> 1248int main(void) 1249{ 1250 char a = 255, b = 0; 1251 if(memcmp(&a, &b, 1) < 0) 1252 return 1; 1253 return 0; 1254} 1255]])], [AC_MSG_RESULT([yes]) ], 1256[ AC_MSG_RESULT([no]) 1257 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1258 AC_LIBOBJ([memcmp]) 1259], [ AC_MSG_RESULT([cross-compile no]) 1260 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1261 AC_LIBOBJ([memcmp]) 1262]) ]) 1263 1264dnl define memcmp to its replacement, pass unique id for program as arg 1265AC_DEFUN([AHX_MEMCMP_BROKEN], [ 1266#ifdef MEMCMP_IS_BROKEN 1267# ifdef memcmp 1268# undef memcmp 1269# endif 1270#define memcmp memcmp_$1 1271int memcmp(const void *x, const void *y, size_t n); 1272#endif 1273]) 1274 1275dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 1276AC_DEFUN([ACX_CHECK_SS_FAMILY], 1277[AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [ 1278 AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [ 1279 AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage]) 1280 ],, [AC_INCLUDES_DEFAULT 1281#ifdef HAVE_NETINET_IN_H 1282#include <netinet/in.h> 1283#endif 1284#ifdef HAVE_SYS_SOCKET_H 1285#include <sys/socket.h> 1286#endif 1287#ifdef HAVE_NETDB_H 1288#include <netdb.h> 1289#endif 1290#ifdef HAVE_ARPA_INET_H 1291#include <arpa/inet.h> 1292#endif 1293 ]) 1294], [AC_INCLUDES_DEFAULT 1295#ifdef HAVE_NETINET_IN_H 1296#include <netinet/in.h> 1297#endif 1298#ifdef HAVE_SYS_SOCKET_H 1299#include <sys/socket.h> 1300#endif 1301#ifdef HAVE_NETDB_H 1302#include <netdb.h> 1303#endif 1304#ifdef HAVE_ARPA_INET_H 1305#include <arpa/inet.h> 1306#endif 1307]) ]) 1308 1309dnl End of file 1310