acx_nlnetlabs.m4 revision 259065
1# acx_nlnetlabs.m4 - common macros for configure checks 2# Copyright 2009, Wouter Wijngaards, NLnet Labs. 3# BSD licensed. 4# 5# Version 21 6# 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h. 7# 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns. 8# 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc. 9# Fix ACX_MALLOC for redefined malloc error. 10# Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32 11# 2011-11-10 Fix FLTO test to not drop a.out in current directory. 12# 2011-11-01 Fix FLTO test for llvm on Lion. 13# 2011-08-01 Fix nonblock test (broken at v13). 14# 2011-08-01 Fix autoconf 2.68 warnings 15# 2011-06-23 Add ACX_CHECK_FLTO to check -flto. 16# 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66. 17# 2010-07-02 Add check for ss_family (for minix). 18# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS. 19# 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end. 20# 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS seperate, -ldl 21# 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN 22# 2010-01-20 added AHX_COONFIG_STRLCAT 23# 2009-07-14 U_CHAR detection improved for windows crosscompile. 24# added ACX_FUNC_MALLOC 25# fixup some #if to #ifdef 26# NONBLOCKING test for mingw crosscompile. 27# 2009-07-13 added ACX_WITH_SSL_OPTIONAL 28# 2009-07-03 fixup LDFLAGS for empty ssl dir. 29# 30# Automates some of the checking constructs. Aims at portability for POSIX. 31# Documentation for functions is below. 32# 33# the following macro's are provided in this file: 34# (see below for details on each macro). 35# 36# ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc. 37# ACX_RSRC_VERSION - create windows resource version number. 38# ACX_CHECK_COMPILER_FLAG - see if cc supports a flag. 39# ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below). 40# ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly. 41# ACX_DEPFLAG - find cc dependency flags. 42# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX. 43# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax. 44# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax. 45# ACX_CHECK_FLTO - see if cc supports -flto and use it if so. 46# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved. 47# ACX_TYPE_U_CHAR - u_char type. 48# ACX_TYPE_RLIM_T - rlim_t type. 49# ACX_TYPE_SOCKLEN_T - socklen_t type. 50# ACX_TYPE_IN_ADDR_T - in_addr_t type. 51# ACX_TYPE_IN_PORT_T - in_port_t type. 52# ACX_ARG_RPATH - add --disable-rpath option. 53# ACX_WITH_SSL - add --with-ssl option, link -lcrypto. 54# ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto, 55# where --without-ssl is also accepted 56# ACX_LIB_SSL - setup to link -lssl. 57# ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files. 58# ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably. 59# ACX_FUNC_DEPRECATED - see if func is deprecated. 60# ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work. 61# ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments. 62# ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably. 63# ACX_FUNC_MALLOC - check malloc, define replacement . 64# AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format. 65# AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused. 66# AHX_CONFIG_FSEEKO - define fseeko, ftello fallback. 67# AHX_CONFIG_RAND_MAX - define RAND_MAX if needed. 68# AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed. 69# AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed. 70# AHX_CONFIG_SNPRINTF - snprintf compat prototype 71# AHX_CONFIG_INET_PTON - inet_pton compat prototype 72# AHX_CONFIG_INET_NTOP - inet_ntop compat prototype 73# AHX_CONFIG_INET_ATON - inet_aton compat prototype 74# AHX_CONFIG_MEMMOVE - memmove compat prototype 75# AHX_CONFIG_STRLCAT - strlcat compat prototype 76# AHX_CONFIG_STRLCPY - strlcpy compat prototype 77# AHX_CONFIG_GMTIME_R - gmtime_r compat prototype 78# AHX_CONFIG_W32_SLEEP - w32 compat for sleep 79# AHX_CONFIG_W32_USLEEP - w32 compat for usleep 80# AHX_CONFIG_W32_RANDOM - w32 compat for random 81# AHX_CONFIG_W32_SRANDOM - w32 compat for srandom 82# AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T. 83# ACX_CFLAGS_STRIP - strip one flag from CFLAGS 84# ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS 85# AHX_CONFIG_FLAG_OMITTED - define omitted flag 86# AHX_CONFIG_FLAG_EXT - define omitted extension flag 87# AHX_CONFIG_EXT_FLAGS - define the stripped extension flags 88# ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters. 89# AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED. 90# ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 91# 92 93dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines. 94dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var) 95dnl $1: the text to change. 96dnl $2: the result. 97AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`" 98]) 99 100dnl Calculate comma separated windows-resource numbers from package version. 101dnl Picks the first three(,0) or four numbers out of the name. 102dnl $1: variable for the result 103AC_DEFUN([ACX_RSRC_VERSION], 104[$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/' `] 105]) 106 107dnl Routine to help check for compiler flags. 108dnl Checks if the compiler will accept the flag. 109dnl $1: the flag without a - in front, so g to check -g. 110dnl $2: executed if yes 111dnl $3: executed if no 112AC_DEFUN([ACX_CHECK_COMPILER_FLAG], 113[ 114AC_REQUIRE([AC_PROG_CC]) 115AC_MSG_CHECKING(whether $CC supports -$1) 116cache=`echo $1 | sed 'y%.=/+-%___p_%'` 117AC_CACHE_VAL(cv_prog_cc_flag_$cache, 118[ 119echo 'void f(){}' >conftest.c 120if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then 121eval "cv_prog_cc_flag_$cache=yes" 122else 123eval "cv_prog_cc_flag_$cache=no" 124fi 125rm -f conftest conftest.o conftest.c 126]) 127if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then 128AC_MSG_RESULT(yes) 129: 130$2 131else 132AC_MSG_RESULT(no) 133: 134$3 135fi 136]) 137 138dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED 139dnl ERRFLAG: result, compiler flag to turn warnings into errors 140AC_DEFUN([ACX_CHECK_ERROR_FLAGS], 141[ 142ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"]) 143ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"], 144 [ERRFLAG="$ERRFLAG -errfmt"]) 145]) 146 147dnl Routine to help check for needed compiler flags. 148dnl $1: flags for CC 149dnl $2: the includes and code 150dnl $3: if the given code only compiles with the flag, execute argument 3 151dnl $4: if the given code compiles without the flag, execute argument 4 152dnl $5: with and without flag the compile fails, execute argument 5. 153AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED], 154[ 155AC_REQUIRE([AC_PROG_CC]) 156AC_REQUIRE([ACX_CHECK_ERROR_FLAGS]) 157AC_MSG_CHECKING(whether we need $1 as a flag for $CC) 158cache=AS_TR_SH($1) 159dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'` 160AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache, 161[ 162echo '$2' > conftest.c 163echo 'void f(){}' >>conftest.c 164if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then 165eval "cv_prog_cc_flag_needed_$cache=no" 166else 167[ 168if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then 169eval "cv_prog_cc_flag_needed_$cache=yes" 170else 171eval "cv_prog_cc_flag_needed_$cache=fail" 172#echo 'Test with flag fails too!' 173#cat conftest.c 174#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 175#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 176#exit 1 177fi 178] 179fi 180rm -f conftest conftest.c conftest.o 181]) 182if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then 183AC_MSG_RESULT(yes) 184: 185$3 186else 187if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then 188AC_MSG_RESULT(no) 189#echo 'Test with flag is no!' 190#cat conftest.c 191#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 192#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 193#exit 1 194: 195$4 196else 197AC_MSG_RESULT(failed) 198: 199$5 200fi 201fi 202]) 203 204dnl Check for CC dependency flag 205dnl DEPFLAG: set to flag that generates dependencies. 206AC_DEFUN([ACX_DEPFLAG], 207[ 208AC_MSG_CHECKING([$CC dependency flag]) 209echo 'void f(){}' >conftest.c 210if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then 211 DEPFLAG="-MM" 212else 213 if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then 214 DEPFLAG="-xM1" 215 else 216 DEPFLAG="-MM" # dunno do something 217 fi 218fi 219AC_MSG_RESULT($DEPFLAG) 220rm -f conftest.c 221AC_SUBST(DEPFLAG) 222]) 223 224dnl Determine flags that gives POSIX and BSD functionality. 225dnl CFLAGS is modified for the result. 226AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND], 227[ 228ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"]) 229ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"]) 230 231AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT]) 232 233ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE, 234[ 235#include "confdefs.h" 236#include <stdlib.h> 237#include <ctype.h> 238#include <sys/time.h> 239#ifdef HAVE_TIME_H 240#include <time.h> 241#endif 242#include <unistd.h> 243#include <netdb.h> 244#ifdef HAVE_GETOPT_H 245#include <getopt.h> 246#endif 247 248int test() { 249 int a; 250 char **opts = NULL; 251 struct timeval tv; 252 char *t; 253 time_t time = 0; 254 char *buf = NULL; 255 const char* str = NULL; 256 struct msghdr msg; 257 msg.msg_control = 0; 258 t = ctime_r(&time, buf); 259 tv.tv_usec = 10; 260 srandom(32); 261 a = getopt(2, opts, "a"); 262 a = isascii(32); 263 str = gai_strerror(0); 264 if(str && t && tv.tv_usec && msg.msg_control) 265 a = 0; 266 return a; 267} 268], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"]) 269 270ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE, 271[ 272#include "confdefs.h" 273#include <stdlib.h> 274#include <ctype.h> 275#include <sys/time.h> 276#ifdef HAVE_TIME_H 277#include <time.h> 278#endif 279#include <unistd.h> 280#include <netdb.h> 281#ifdef HAVE_GETOPT_H 282#include <getopt.h> 283#endif 284 285int test() { 286 int a; 287 char **opts = NULL; 288 struct timeval tv; 289 char *t; 290 time_t time = 0; 291 char *buf = NULL; 292 const char* str = NULL; 293 struct msghdr msg; 294 msg.msg_control = 0; 295 t = ctime_r(&time, buf); 296 tv.tv_usec = 10; 297 srandom(32); 298 a = getopt(2, opts, "a"); 299 a = isascii(32); 300 str = gai_strerror(0); 301 if(str && t && tv.tv_usec && msg.msg_control) 302 a = 0; 303 return a; 304} 305], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"]) 306 307ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG, 308[ 309#include <stdbool.h> 310#include <ctype.h> 311int test() { 312 int a = 0; 313 return a; 314} 315], [CFLAGS="$CFLAGS $C99FLAG"]) 316 317ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE, 318[ 319#include <ctype.h> 320 321int test() { 322 int a; 323 a = isascii(32); 324 return a; 325} 326], [CFLAGS="$CFLAGS -D_BSD_SOURCE"]) 327 328ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE, 329[ 330#include <netinet/in.h> 331 332int test() { 333 struct in6_pktinfo inf; 334 int a = (int)sizeof(inf); 335 return a; 336} 337], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 338 339# check again for GNU_SOURCE for setresgid. May fail if setresgid 340# is not available at all. -D_FRSRESGID is to make this check unique. 341# otherwise we would get the previous cached result. 342ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID, 343[ 344#include <unistd.h> 345 346int test() { 347 int a = setresgid(0,0,0); 348 a = setresuid(0,0,0); 349 return a; 350} 351], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 352 353ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112, 354[ 355#include "confdefs.h" 356#ifdef HAVE_TIME_H 357#include <time.h> 358#endif 359#include <netdb.h> 360 361int test() { 362 int a = 0; 363 char *t; 364 time_t time = 0; 365 char *buf = NULL; 366 const char* str = NULL; 367 t = ctime_r(&time, buf); 368 str = gai_strerror(0); 369 if(t && str) 370 a = 0; 371 return a; 372} 373], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"]) 374 375ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__, 376[ 377#include "confdefs.h" 378#include <stdlib.h> 379#include <ctype.h> 380#include <sys/time.h> 381#ifdef HAVE_TIME_H 382#include <time.h> 383#endif 384#include <unistd.h> 385#ifdef HAVE_GETOPT_H 386#include <getopt.h> 387#endif 388 389int test() { 390 int a; 391 char **opts = NULL; 392 struct timeval tv; 393 tv.tv_usec = 10; 394 srandom(32); 395 a = getopt(2, opts, "a"); 396 a = isascii(32); 397 if(tv.tv_usec) 398 a = 0; 399 return a; 400} 401], [CFLAGS="$CFLAGS -D__EXTENSIONS__"]) 402 403])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND 404 405dnl Check if CC supports -flto. 406dnl in a way that supports clang and suncc (that flag does something else, 407dnl but fails to link). It sets it in CFLAGS if it works. 408AC_DEFUN([ACX_CHECK_FLTO], 409[AC_MSG_CHECKING([if $CC supports -flto]) 410BAKCFLAGS="$CFLAGS" 411CFLAGS="$CFLAGS -flto" 412AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [ 413 if $CC $CFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then 414 CFLAGS="$BAKCFLAGS" 415 AC_MSG_RESULT(no) 416 else 417 AC_MSG_RESULT(yes) 418 fi 419 rm -f conftest conftest.c conftest.o 420], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)]) 421]) 422 423dnl Check the printf-format attribute (if any) 424dnl result in HAVE_ATTR_FORMAT. 425dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE. 426AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE], 427[AC_REQUIRE([AC_PROG_CC]) 428AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute) 429AC_CACHE_VAL(ac_cv_c_format_attribute, 430[ac_cv_c_format_attribute=no 431AC_TRY_COMPILE( 432[#include <stdio.h> 433void f (char *format, ...) __attribute__ ((format (printf, 1, 2))); 434void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2))); 435], [ 436 f ("%s", "str"); 437], 438[ac_cv_c_format_attribute="yes"], 439[ac_cv_c_format_attribute="no"]) 440]) 441 442AC_MSG_RESULT($ac_cv_c_format_attribute) 443if test $ac_cv_c_format_attribute = yes; then 444 AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute]) 445fi 446])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE 447 448dnl Setup ATTR_FORMAT config.h parts. 449dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also. 450AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE], 451[ 452#ifdef HAVE_ATTR_FORMAT 453# define ATTR_FORMAT(archetype, string_index, first_to_check) \ 454 __attribute__ ((format (archetype, string_index, first_to_check))) 455#else /* !HAVE_ATTR_FORMAT */ 456# define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */ 457#endif /* !HAVE_ATTR_FORMAT */ 458]) 459 460dnl Check how to mark function arguments as unused. 461dnl result in HAVE_ATTR_UNUSED. 462dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also. 463AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE], 464[AC_REQUIRE([AC_PROG_CC]) 465AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute) 466AC_CACHE_VAL(ac_cv_c_unused_attribute, 467[ac_cv_c_unused_attribute=no 468AC_TRY_COMPILE( 469[#include <stdio.h> 470void f (char *u __attribute__((unused))); 471], [ 472 f ("x"); 473], 474[ac_cv_c_unused_attribute="yes"], 475[ac_cv_c_unused_attribute="no"]) 476]) 477 478dnl Setup ATTR_UNUSED config.h parts. 479dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also. 480AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE], 481[ 482#if defined(DOXYGEN) 483# define ATTR_UNUSED(x) x 484#elif defined(__cplusplus) 485# define ATTR_UNUSED(x) 486#elif defined(HAVE_ATTR_UNUSED) 487# define ATTR_UNUSED(x) x __attribute__((unused)) 488#else /* !HAVE_ATTR_UNUSED */ 489# define ATTR_UNUSED(x) x 490#endif /* !HAVE_ATTR_UNUSED */ 491]) 492 493AC_MSG_RESULT($ac_cv_c_unused_attribute) 494if test $ac_cv_c_unused_attribute = yes; then 495 AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute]) 496fi 497])dnl 498 499dnl Pre-fun for ACX_LIBTOOL_C_ONLY 500AC_DEFUN([ACX_LIBTOOL_C_PRE], [ 501# skip these tests, we do not need them. 502AC_DEFUN([AC_PROG_F77], [:]) 503AC_DEFUN([AC_PROG_FC], [:]) 504AC_DEFUN([AC_PROG_CXX], [:]) 505AC_DEFUN([AC_PROG_CXXCPP], [:]) 506AC_DEFUN([AC_PROG_OBJC], [:]) 507AC_DEFUN([AC_PROG_OBJCCPP], [:]) 508AC_DEFUN([AC_LIBTOOL_CXX], [:]) 509AC_DEFUN([AC_LIBTOOL_F77], [:]) 510# always use ./libtool unless override from commandline (libtool=mylibtool) 511if test -z "$libtool"; then 512 libtool="./libtool" 513fi 514AC_SUBST(libtool) 515# avoid libtool max commandline length test on systems that fork slowly. 516AC_CANONICAL_HOST 517if echo "$host_os" | grep "sunos4" >/dev/null; then 518 lt_cv_sys_max_cmd_len=32750; 519fi 520AC_PATH_TOOL(AR, ar, [false]) 521if test $AR = false; then 522 AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it]) 523fi 524]) 525 526dnl Perform libtool check, portably, only for C 527AC_DEFUN([ACX_LIBTOOL_C_ONLY], [ 528dnl as a requirement so that is gets called before LIBTOOL 529dnl because libtools 'AC_REQUIRE' names are right after this one, before 530dnl this function contents. 531AC_REQUIRE([ACX_LIBTOOL_C_PRE]) 532AC_PROG_LIBTOOL 533]) 534 535dnl Detect if u_char type is defined, otherwise define it. 536AC_DEFUN([ACX_TYPE_U_CHAR], 537[AC_CHECK_TYPE([u_char], , 538 [AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [ 539AC_INCLUDES_DEFAULT 540#ifdef HAVE_WINSOCK2_H 541# include <winsock2.h> 542#endif 543]) ]) 544 545dnl Detect if rlim_t type is defined, otherwise define it. 546AC_DEFUN([ACX_TYPE_RLIM_T], 547[AC_CHECK_TYPE(rlim_t, , 548 [AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [ 549AC_INCLUDES_DEFAULT 550#ifdef HAVE_SYS_RESOURCE_H 551# include <sys/resource.h> 552#endif 553]) ]) 554 555dnl Detect if socklen_t type is defined, otherwise define it. 556AC_DEFUN([ACX_TYPE_SOCKLEN_T], 557[ 558AC_CHECK_TYPE(socklen_t, , 559 [AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [ 560AC_INCLUDES_DEFAULT 561#ifdef HAVE_SYS_SOCKET_H 562# include <sys/socket.h> 563#endif 564#ifdef HAVE_WS2TCPIP_H 565# include <ws2tcpip.h> 566#endif 567]) ]) 568 569dnl Detect if in_addr_t type is defined, otherwise define it. 570AC_DEFUN([ACX_TYPE_IN_ADDR_T], 571[ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [ 572AC_INCLUDES_DEFAULT 573#ifdef HAVE_SYS_TYPES_H 574# include <sys/types.h> 575#endif 576#ifdef HAVE_NETINET_IN_H 577# include <netinet/in.h> 578#endif 579]) ]) 580 581dnl Detect if in_port_t type is defined, otherwise define it. 582AC_DEFUN([ACX_TYPE_IN_PORT_T], 583[ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [ 584AC_INCLUDES_DEFAULT 585#ifdef HAVE_SYS_TYPES_H 586# include <sys/types.h> 587#endif 588#ifdef HAVE_NETINET_IN_H 589# include <netinet/in.h> 590#endif 591]) ]) 592 593dnl Add option to disable the evil rpath. Check whether to use rpath or not. 594dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool. 595AC_DEFUN([ACX_ARG_RPATH], 596[ 597AC_ARG_ENABLE(rpath, 598 [ --disable-rpath disable hardcoded rpath (default=enabled)], 599 enable_rpath=$enableval, enable_rpath=yes) 600if test "x$enable_rpath" = xno; then 601 dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.]) 602 AC_CONFIG_COMMANDS([disable-rpath], [ 603 sed < libtool > libtool-2 \ 604 's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/' 605 mv libtool-2 libtool 606 chmod 755 libtool 607 libtool="./libtool" 608 ]) 609fi 610]) 611 612dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is 613dnl an absolute path. 614dnl $1: the pathname to add. 615AC_DEFUN([ACX_RUNTIME_PATH_ADD], [ 616 if test "x$enable_rpath" = xyes; then 617 if echo "$1" | grep "^/" >/dev/null; then 618 RUNTIME_PATH="$RUNTIME_PATH -R$1" 619 fi 620 fi 621]) 622 623dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL 624dnl Takes one argument; the withval checked in those 2 functions 625dnl sets up the environment for the given openssl path 626AC_DEFUN([ACX_SSL_CHECKS], [ 627 withval=$1 628 if test x_$withval != x_no; then 629 AC_MSG_CHECKING(for SSL) 630 if test x_$withval = x_ -o x_$withval = x_yes; then 631 withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr" 632 fi 633 for dir in $withval; do 634 ssldir="$dir" 635 if test -f "$dir/include/openssl/ssl.h"; then 636 found_ssl="yes" 637 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.]) 638 dnl assume /usr/include is already in the include-path. 639 if test "$ssldir" != "/usr"; then 640 CPPFLAGS="$CPPFLAGS -I$ssldir/include" 641 LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir/include" 642 fi 643 break; 644 fi 645 done 646 if test x_$found_ssl != x_yes; then 647 AC_MSG_ERROR(Cannot find the SSL libraries in $withval) 648 else 649 AC_MSG_RESULT(found in $ssldir) 650 HAVE_SSL=yes 651 dnl assume /usr is already in the lib and dynlib paths. 652 if test "$ssldir" != "/usr" -a "$ssldir" != ""; then 653 LDFLAGS="$LDFLAGS -L$ssldir/lib" 654 LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib" 655 ACX_RUNTIME_PATH_ADD([$ssldir/lib]) 656 fi 657 658 AC_MSG_CHECKING([for HMAC_CTX_init in -lcrypto]) 659 LIBS="$LIBS -lcrypto" 660 LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto" 661 AC_TRY_LINK(, [ 662 int HMAC_CTX_init(void); 663 (void)HMAC_CTX_init(); 664 ], [ 665 AC_MSG_RESULT(yes) 666 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 667 [If you have HMAC_CTX_init]) 668 ], [ 669 AC_MSG_RESULT(no) 670 # check if -lwsock32 or -lgdi32 are needed. 671 BAKLIBS="$LIBS" 672 BAKSSLLIBS="$LIBSSL_LIBS" 673 LIBS="$LIBS -lgdi32" 674 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32" 675 AC_MSG_CHECKING([if -lcrypto needs -lgdi32]) 676 AC_TRY_LINK([], [ 677 int HMAC_CTX_init(void); 678 (void)HMAC_CTX_init(); 679 ],[ 680 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 681 [If you have HMAC_CTX_init]) 682 AC_MSG_RESULT(yes) 683 ],[ 684 AC_MSG_RESULT(no) 685 LIBS="$BAKLIBS" 686 LIBSSL_LIBS="$BAKSSLLIBS" 687 LIBS="$LIBS -ldl" 688 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 689 AC_MSG_CHECKING([if -lcrypto needs -ldl]) 690 AC_TRY_LINK([], [ 691 int HMAC_CTX_init(void); 692 (void)HMAC_CTX_init(); 693 ],[ 694 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1, 695 [If you have HMAC_CTX_init]) 696 AC_MSG_RESULT(yes) 697 ],[ 698 AC_MSG_RESULT(no) 699 AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required]) 700 ]) 701 ]) 702 ]) 703 fi 704 AC_SUBST(HAVE_SSL) 705 AC_SUBST(RUNTIME_PATH) 706 # openssl engine functionality needs dlopen(). 707 BAKLIBS="$LIBS" 708 AC_SEARCH_LIBS([dlopen], [dl]) 709 if test "$LIBS" != "$BAKLIBS"; then 710 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 711 fi 712 fi 713AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT]) 714AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT]) 715AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT]) 716])dnl End of ACX_SSL_CHECKS 717 718dnl Check for SSL, where SSL is mandatory 719dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 720dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 721dnl Checks main header files of SSL. 722dnl 723AC_DEFUN([ACX_WITH_SSL], 724[ 725AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], 726 [enable SSL (will check /usr/local/ssl 727 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ 728 ],[ 729 withval="yes" 730 ]) 731 if test x_$withval = x_no; then 732 AC_MSG_ERROR([Need SSL library to do digital signature cryptography]) 733 fi 734 ACX_SSL_CHECKS($withval) 735])dnl End of ACX_WITH_SSL 736 737dnl Check for SSL, where ssl is optional (--without-ssl is allowed) 738dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 739dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 740dnl Checks main header files of SSL. 741dnl 742AC_DEFUN([ACX_WITH_SSL_OPTIONAL], 743[ 744AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], 745 [enable SSL (will check /usr/local/ssl 746 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ 747 ],[ 748 withval="yes" 749 ]) 750 ACX_SSL_CHECKS($withval) 751])dnl End of ACX_WITH_SSL_OPTIONAL 752 753dnl Setup to use -lssl 754dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one). 755AC_DEFUN([ACX_LIB_SSL], 756[ 757# check if libssl needs libdl 758BAKLIBS="$LIBS" 759LIBS="-lssl $LIBS" 760AC_MSG_CHECKING([if libssl needs libdl]) 761AC_TRY_LINK_FUNC([SSL_CTX_new], [ 762 AC_MSG_RESULT([no]) 763 LIBS="$BAKLIBS" 764] , [ 765 AC_MSG_RESULT([yes]) 766 LIBS="$BAKLIBS" 767 AC_SEARCH_LIBS([dlopen], [dl]) 768]) ])dnl End of ACX_LIB_SSL 769 770dnl Setup to use very large files (>2Gb). 771dnl setups fseeko and its own 772AC_DEFUN([ACX_SYS_LARGEFILE], 773[ 774AC_SYS_LARGEFILE 775dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko 776ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1, 777[ 778#include <stdio.h> 779int test() { 780 int a = fseeko(stdin, 0, 0); 781 return a; 782} 783], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"]) 784]) 785 786dnl Check getaddrinfo. 787dnl Works on linux, solaris, bsd and windows(links winsock). 788dnl defines HAVE_GETADDRINFO, USE_WINSOCK. 789AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES], 790[AC_REQUIRE([AC_PROG_CC]) 791AC_MSG_CHECKING(for getaddrinfo) 792ac_cv_func_getaddrinfo=no 793AC_LINK_IFELSE( 794[AC_LANG_SOURCE([[ 795#ifdef __cplusplus 796extern "C" 797{ 798#endif 799char* getaddrinfo(); 800char* (*f) () = getaddrinfo; 801#ifdef __cplusplus 802} 803#endif 804int main() { 805 ; 806 return 0; 807} 808]])], 809dnl this case on linux, solaris, bsd 810[ac_cv_func_getaddrinfo="yes" 811dnl see if on windows 812if test "$ac_cv_header_windows_h" = "yes"; then 813 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 814 USE_WINSOCK="1" 815 LIBS="$LIBS -lws2_32" 816fi 817], 818dnl no quick getaddrinfo, try mingw32 and winsock2 library. 819ORIGLIBS="$LIBS" 820LIBS="$LIBS -lws2_32" 821AC_LINK_IFELSE( 822[AC_LANG_PROGRAM( 823[ 824#ifdef HAVE_WS2TCPIP_H 825#include <ws2tcpip.h> 826#endif 827], 828[ 829 (void)getaddrinfo(NULL, NULL, NULL, NULL); 830] 831)], 832[ 833ac_cv_func_getaddrinfo="yes" 834dnl already: LIBS="$LIBS -lws2_32" 835AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 836USE_WINSOCK="1" 837], 838[ 839ac_cv_func_getaddrinfo="no" 840LIBS="$ORIGLIBS" 841]) 842) 843 844AC_MSG_RESULT($ac_cv_func_getaddrinfo) 845if test $ac_cv_func_getaddrinfo = yes; then 846 AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available]) 847fi 848])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES 849 850dnl check if a function is deprecated. defines DEPRECATED_func in config.h. 851dnl $1: function name 852dnl $2: C-statement that calls the function. 853dnl $3: includes for the program. 854dnl $4: executes if yes 855dnl $5: executes if no 856AC_DEFUN([ACX_FUNC_DEPRECATED], 857[ 858AC_REQUIRE([AC_PROG_CC]) 859AC_MSG_CHECKING(if $1 is deprecated) 860cache=`echo $1 | sed 'y%.=/+-%___p_%'` 861AC_CACHE_VAL(cv_cc_deprecated_$cache, 862[ 863echo '$3' >conftest.c 864echo 'void f(){ $2 }' >>conftest.c 865if test -z "`$CC -c conftest.c 2>&1 | grep deprecated`"; then 866eval "cv_cc_deprecated_$cache=no" 867else 868eval "cv_cc_deprecated_$cache=yes" 869fi 870rm -f conftest conftest.o conftest.c 871]) 872if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then 873AC_MSG_RESULT(yes) 874AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated]) 875: 876$4 877else 878AC_MSG_RESULT(no) 879: 880$5 881fi 882])dnl end of ACX_FUNC_DEPRECATED 883 884dnl check if select and nonblocking sockets actually work. 885dnl Needs fork(2) and select(2). 886dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from 887dnl a nonblocking socket do not work, a new call to select is necessary. 888AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN], 889[ 890AC_MSG_CHECKING([if nonblocking sockets work]) 891if echo $target | grep mingw32 >/dev/null; then 892 AC_MSG_RESULT([no (windows)]) 893 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 894else 895AC_RUN_IFELSE([ 896AC_LANG_SOURCE([[ 897#include <stdio.h> 898#include <string.h> 899#include <stdlib.h> 900#include <fcntl.h> 901#include <errno.h> 902#ifdef HAVE_SYS_TYPES_H 903#include <sys/types.h> 904#endif 905#ifdef HAVE_SYS_SOCKET_H 906#include <sys/socket.h> 907#endif 908#ifdef HAVE_NETINET_IN_H 909#include <netinet/in.h> 910#endif 911#ifdef HAVE_ARPA_INET_H 912#include <arpa/inet.h> 913#endif 914#ifdef HAVE_UNISTD_H 915#include <unistd.h> 916#endif 917#ifdef HAVE_TIME_H 918#include <time.h> 919#endif 920 921int main(void) 922{ 923 int port; 924 int sfd, cfd; 925 int num = 10; 926 int i, p; 927 struct sockaddr_in a; 928 /* test if select and nonblocking reads work well together */ 929 /* open port. 930 fork child to send 10 messages. 931 select to read. 932 then try to nonblocking read the 10 messages 933 then, nonblocking read must give EAGAIN 934 */ 935 936 port = 12345 + (time(0)%32); 937 sfd = socket(PF_INET, SOCK_DGRAM, 0); 938 if(sfd == -1) { 939 perror("socket"); 940 return 1; 941 } 942 memset(&a, 0, sizeof(a)); 943 a.sin_family = AF_INET; 944 a.sin_port = htons(port); 945 a.sin_addr.s_addr = inet_addr("127.0.0.1"); 946 if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 947 perror("bind"); 948 return 1; 949 } 950 if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) { 951 perror("fcntl"); 952 return 1; 953 } 954 955 cfd = socket(PF_INET, SOCK_DGRAM, 0); 956 if(cfd == -1) { 957 perror("client socket"); 958 return 1; 959 } 960 a.sin_port = 0; 961 if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 962 perror("client bind"); 963 return 1; 964 } 965 a.sin_port = htons(port); 966 967 /* no handler, causes exit in 10 seconds */ 968 alarm(10); 969 970 /* send and receive on the socket */ 971 if((p=fork()) == 0) { 972 for(i=0; i<num; i++) { 973 if(sendto(cfd, &i, sizeof(i), 0, 974 (struct sockaddr*)&a, sizeof(a)) < 0) { 975 perror("sendto"); 976 return 1; 977 } 978 } 979 } else { 980 /* parent */ 981 fd_set rset; 982 int x; 983 if(p == -1) { 984 perror("fork"); 985 return 1; 986 } 987 FD_ZERO(&rset); 988 FD_SET(sfd, &rset); 989 if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) { 990 perror("select"); 991 return 1; 992 } 993 i = 0; 994 while(i < num) { 995 if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) { 996 if(errno == EAGAIN) 997 continue; 998 perror("recv"); 999 return 1; 1000 } 1001 i++; 1002 } 1003 /* now we want to get EAGAIN: nonblocking goodness */ 1004 errno = 0; 1005 recv(sfd, &x, sizeof(x), 0); 1006 if(errno != EAGAIN) { 1007 perror("trying to recv again"); 1008 return 1; 1009 } 1010 /* EAGAIN encountered */ 1011 } 1012 1013 close(sfd); 1014 close(cfd); 1015 return 0; 1016} 1017]])], [ 1018 AC_MSG_RESULT([yes]) 1019], [ 1020 AC_MSG_RESULT([no]) 1021 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 1022], [ 1023 AC_MSG_RESULT([crosscompile(yes)]) 1024]) 1025fi 1026])dnl End of ACX_CHECK_NONBLOCKING_BROKEN 1027 1028dnl Check if mkdir has one or two arguments. 1029dnl defines MKDIR_HAS_ONE_ARG 1030AC_DEFUN([ACX_MKDIR_ONE_ARG], 1031[ 1032AC_MSG_CHECKING([whether mkdir has one arg]) 1033AC_TRY_COMPILE([ 1034#include <stdio.h> 1035#include <unistd.h> 1036#ifdef HAVE_WINSOCK2_H 1037#include <winsock2.h> 1038#endif 1039#ifdef HAVE_SYS_STAT_H 1040#include <sys/stat.h> 1041#endif 1042], [ 1043 (void)mkdir("directory"); 1044], 1045AC_MSG_RESULT(yes) 1046AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.]) 1047, 1048AC_MSG_RESULT(no) 1049) 1050])dnl end of ACX_MKDIR_ONE_ARG 1051 1052dnl Check for ioctlsocket function. works on mingw32 too. 1053AC_DEFUN([ACX_FUNC_IOCTLSOCKET], 1054[ 1055# check ioctlsocket 1056AC_MSG_CHECKING(for ioctlsocket) 1057AC_LINK_IFELSE([AC_LANG_PROGRAM([ 1058#ifdef HAVE_WINSOCK2_H 1059#include <winsock2.h> 1060#endif 1061], [ 1062 (void)ioctlsocket(0, 0, NULL); 1063])], [ 1064AC_MSG_RESULT(yes) 1065AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available]) 1066],[AC_MSG_RESULT(no)]) 1067])dnl end of ACX_FUNC_IOCTLSOCKET 1068 1069dnl detect malloc and provide malloc compat prototype. 1070dnl $1: unique name for compat code 1071AC_DEFUN([ACX_FUNC_MALLOC], 1072[ 1073 AC_MSG_CHECKING([for GNU libc compatible malloc]) 1074 AC_RUN_IFELSE([AC_LANG_PROGRAM( 1075[[#if defined STDC_HEADERS || defined HAVE_STDLIB_H 1076#include <stdlib.h> 1077#else 1078char *malloc (); 1079#endif 1080]], [ if(malloc(0) != 0) return 1;]) 1081], 1082 [AC_MSG_RESULT([no]) 1083 AC_LIBOBJ(malloc) 1084 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] , 1085 [AC_MSG_RESULT([yes]) 1086 AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])], 1087 [AC_MSG_RESULT([no (crosscompile)]) 1088 AC_LIBOBJ(malloc) 1089 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ) 1090]) 1091 1092dnl Define fallback for fseeko and ftello if needed. 1093AC_DEFUN([AHX_CONFIG_FSEEKO], 1094[ 1095#ifndef HAVE_FSEEKO 1096#define fseeko fseek 1097#define ftello ftell 1098#endif /* HAVE_FSEEKO */ 1099]) 1100 1101dnl Define RAND_MAX if not defined 1102AC_DEFUN([AHX_CONFIG_RAND_MAX], 1103[ 1104#ifndef RAND_MAX 1105#define RAND_MAX 2147483647 1106#endif 1107]) 1108 1109dnl Define MAXHOSTNAMELEN if not defined 1110AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN], 1111[ 1112#ifndef MAXHOSTNAMELEN 1113#define MAXHOSTNAMELEN 256 1114#endif 1115]) 1116 1117dnl Define IPV6_MIN_MTU if not defined 1118AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU], 1119[ 1120#ifndef IPV6_MIN_MTU 1121#define IPV6_MIN_MTU 1280 1122#endif /* IPV6_MIN_MTU */ 1123]) 1124 1125dnl provide snprintf, vsnprintf compat prototype 1126dnl $1: unique name for compat code 1127AC_DEFUN([AHX_CONFIG_SNPRINTF], 1128[ 1129#ifndef HAVE_SNPRINTF 1130#define snprintf snprintf_$1 1131#define vsnprintf vsnprintf_$1 1132#include <stdarg.h> 1133int snprintf (char *str, size_t count, const char *fmt, ...); 1134int vsnprintf (char *str, size_t count, const char *fmt, va_list arg); 1135#endif /* HAVE_SNPRINTF */ 1136]) 1137 1138dnl provide inet_pton compat prototype. 1139dnl $1: unique name for compat code 1140AC_DEFUN([AHX_CONFIG_INET_PTON], 1141[ 1142#ifndef HAVE_INET_PTON 1143#define inet_pton inet_pton_$1 1144int inet_pton(int af, const char* src, void* dst); 1145#endif /* HAVE_INET_PTON */ 1146]) 1147 1148dnl provide inet_ntop compat prototype. 1149dnl $1: unique name for compat code 1150AC_DEFUN([AHX_CONFIG_INET_NTOP], 1151[ 1152#ifndef HAVE_INET_NTOP 1153#define inet_ntop inet_ntop_$1 1154const char *inet_ntop(int af, const void *src, char *dst, size_t size); 1155#endif 1156]) 1157 1158dnl provide inet_aton compat prototype. 1159dnl $1: unique name for compat code 1160AC_DEFUN([AHX_CONFIG_INET_ATON], 1161[ 1162#ifndef HAVE_INET_ATON 1163#define inet_aton inet_aton_$1 1164int inet_aton(const char *cp, struct in_addr *addr); 1165#endif 1166]) 1167 1168dnl provide memmove compat prototype. 1169dnl $1: unique name for compat code 1170AC_DEFUN([AHX_CONFIG_MEMMOVE], 1171[ 1172#ifndef HAVE_MEMMOVE 1173#define memmove memmove_$1 1174void *memmove(void *dest, const void *src, size_t n); 1175#endif 1176]) 1177 1178dnl provide strlcat compat prototype. 1179dnl $1: unique name for compat code 1180AC_DEFUN([AHX_CONFIG_STRLCAT], 1181[ 1182#ifndef HAVE_STRLCAT 1183#define strlcat strlcat_$1 1184size_t strlcat(char *dst, const char *src, size_t siz); 1185#endif 1186]) 1187 1188dnl provide strlcpy compat prototype. 1189dnl $1: unique name for compat code 1190AC_DEFUN([AHX_CONFIG_STRLCPY], 1191[ 1192#ifndef HAVE_STRLCPY 1193#define strlcpy strlcpy_$1 1194size_t strlcpy(char *dst, const char *src, size_t siz); 1195#endif 1196]) 1197 1198dnl provide gmtime_r compat prototype. 1199dnl $1: unique name for compat code 1200AC_DEFUN([AHX_CONFIG_GMTIME_R], 1201[ 1202#ifndef HAVE_GMTIME_R 1203#define gmtime_r gmtime_r_$1 1204struct tm *gmtime_r(const time_t *timep, struct tm *result); 1205#endif 1206]) 1207 1208dnl provide w32 compat definition for sleep 1209AC_DEFUN([AHX_CONFIG_W32_SLEEP], 1210[ 1211#ifndef HAVE_SLEEP 1212#define sleep(x) Sleep((x)*1000) /* on win32 */ 1213#endif /* HAVE_SLEEP */ 1214]) 1215 1216dnl provide w32 compat definition for usleep 1217AC_DEFUN([AHX_CONFIG_W32_USLEEP], 1218[ 1219#ifndef HAVE_USLEEP 1220#define usleep(x) Sleep((x)/1000 + 1) /* on win32 */ 1221#endif /* HAVE_USLEEP */ 1222]) 1223 1224dnl provide w32 compat definition for random 1225AC_DEFUN([AHX_CONFIG_W32_RANDOM], 1226[ 1227#ifndef HAVE_RANDOM 1228#define random rand /* on win32, for tests only (bad random) */ 1229#endif /* HAVE_RANDOM */ 1230]) 1231 1232dnl provide w32 compat definition for srandom 1233AC_DEFUN([AHX_CONFIG_W32_SRANDOM], 1234[ 1235#ifndef HAVE_SRANDOM 1236#define srandom(x) srand(x) /* on win32, for tests only (bad random) */ 1237#endif /* HAVE_SRANDOM */ 1238]) 1239 1240dnl provide w32 compat definition for FD_SET_T 1241AC_DEFUN([AHX_CONFIG_W32_FD_SET_T], 1242[ 1243/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */ 1244#ifdef HAVE_WINSOCK2_H 1245#define FD_SET_T (u_int) 1246#else 1247#define FD_SET_T 1248#endif 1249]) 1250 1251dnl Remove an extension flag from CFLAGS, define replacement to be made. 1252dnl Used by ACX_STRIP_EXT_FLAGS. 1253dnl $1: the name of the flag, for example -D_GNU_SOURCE. 1254AC_DEFUN([ACX_CFLAGS_STRIP], 1255[ 1256 if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then 1257 CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`" 1258 AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h) 1259 fi 1260]) 1261 1262dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h 1263dnl use with ACX_DETERMINE_EXT_FLAGS. 1264AC_DEFUN([ACX_STRIP_EXT_FLAGS], 1265[ 1266 AC_MSG_NOTICE([Stripping extension flags...]) 1267 ACX_CFLAGS_STRIP(-D_GNU_SOURCE) 1268 ACX_CFLAGS_STRIP(-D_BSD_SOURCE) 1269 ACX_CFLAGS_STRIP(-D__EXTENSIONS__) 1270 ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112) 1271 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600) 1272 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1) 1273 ACX_CFLAGS_STRIP(-D_ALL_SOURCE) 1274 ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1) 1275]) dnl End of ACX_STRIP_EXT_FLAGS 1276 1277dnl define one omitted flag for config.h 1278dnl $1: flag name. -D_GNU_SOURCE 1279dnl $2: replacement define. _GNU_SOURCE 1280dnl $3: define value, 1 1281AC_DEFUN([AHX_CONFIG_FLAG_OMITTED], 1282[#if defined($1) && !defined($2) 1283#define $2 $3 1284[#]endif ]) 1285 1286dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags 1287dnl $1: the -DNAME or -DNAME=value string. 1288AC_DEFUN([AHX_CONFIG_FLAG_EXT], 1289[AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,))) 1290]) 1291 1292dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS. 1293AC_DEFUN([AHX_CONFIG_EXT_FLAGS], 1294[AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE) 1295AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE) 1296AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__) 1297AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112) 1298AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600) 1299AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1) 1300AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE) 1301AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1) 1302]) 1303 1304dnl check if memcmp is using signed characters and replace if so. 1305AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED], 1306[AC_MSG_CHECKING([if memcmp compares unsigned]) 1307AC_RUN_IFELSE([AC_LANG_SOURCE([[ 1308#include <stdio.h> 1309#include <stdlib.h> 1310#include <string.h> 1311int main(void) 1312{ 1313 char a = 255, b = 0; 1314 if(memcmp(&a, &b, 1) < 0) 1315 return 1; 1316 return 0; 1317} 1318]])], [AC_MSG_RESULT([yes]) ], 1319[ AC_MSG_RESULT([no]) 1320 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1321 AC_LIBOBJ([memcmp]) 1322], [ AC_MSG_RESULT([cross-compile no]) 1323 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1324 AC_LIBOBJ([memcmp]) 1325]) ]) 1326 1327dnl define memcmp to its replacement, pass unique id for program as arg 1328AC_DEFUN([AHX_MEMCMP_BROKEN], [ 1329#ifdef MEMCMP_IS_BROKEN 1330#include "compat/memcmp.h" 1331#define memcmp memcmp_$1 1332int memcmp(const void *x, const void *y, size_t n); 1333#endif 1334]) 1335 1336dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 1337AC_DEFUN([ACX_CHECK_SS_FAMILY], 1338[AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [ 1339 AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [ 1340 AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage]) 1341 ],, [AC_INCLUDES_DEFAULT 1342#ifdef HAVE_NETINET_IN_H 1343#include <netinet/in.h> 1344#endif 1345#ifdef HAVE_SYS_SOCKET_H 1346#include <sys/socket.h> 1347#endif 1348#ifdef HAVE_NETDB_H 1349#include <netdb.h> 1350#endif 1351#ifdef HAVE_ARPA_INET_H 1352#include <arpa/inet.h> 1353#endif 1354 ]) 1355], [AC_INCLUDES_DEFAULT 1356#ifdef HAVE_NETINET_IN_H 1357#include <netinet/in.h> 1358#endif 1359#ifdef HAVE_SYS_SOCKET_H 1360#include <sys/socket.h> 1361#endif 1362#ifdef HAVE_NETDB_H 1363#include <netdb.h> 1364#endif 1365#ifdef HAVE_ARPA_INET_H 1366#include <arpa/inet.h> 1367#endif 1368]) ]) 1369 1370dnl End of file 1371