1# acx_nlnetlabs.m4 - common macros for configure checks 2# Copyright 2009, Wouter Wijngaards, NLnet Labs. 3# BSD licensed. 4# 5# Version 48 6# 2024-01-16 fix to add -l:libssp.a to -lcrypto link check. 7# and check for getaddrinfo with only header. 8# 2024-01-15 fix to add crypt32 to -lcrypto link check when checking for gdi32. 9# 2023-05-04 fix to remove unused whitespace. 10# 2023-01-26 fix -Wstrict-prototypes. 11# 2022-09-01 fix checking if nonblocking sockets work on OpenBSD. 12# 2021-08-17 fix sed script in ssldir split handling. 13# 2021-08-17 fix for openssl to detect split version, with ssldir_include 14# and ssldir_lib output directories. 15# 2021-07-30 fix for openssl use of lib64 directory. 16# 2021-06-14 fix nonblocking test to use host instead of target for mingw test. 17# 2021-05-17 fix nonblocking socket test from grep on mingw32 to mingw for 18# 64bit compatibility. 19# 2021-03-24 fix ACX_FUNC_DEPRECATED to use CPPFLAGS and CFLAGS. 20# 2021-01-05 fix defun for aclocal 21# 2021-01-05 autoconf 2.70 autoupdate and fixes, no AC_TRY_COMPILE 22# 2020-08-24 Use EVP_sha256 instead of HMAC_Update (for openssl-3.0.0). 23# 2016-03-21 Check -ldl -pthread for libcrypto for ldns and openssl 1.1.0. 24# 2016-03-21 Use HMAC_Update instead of HMAC_CTX_Init (for openssl-1.1.0). 25# 2016-01-04 -D_DEFAULT_SOURCE defined with -D_BSD_SOURCE for Linux glibc 2.20 26# 2015-12-11 FLTO check for new OSX, clang. 27# 2015-11-18 spelling check fix. 28# 2015-11-05 ACX_SSL_CHECKS no longer adds -ldl needlessly. 29# 2015-08-28 ACX_CHECK_PIE and ACX_CHECK_RELRO_NOW added. 30# 2015-03-17 AHX_CONFIG_REALLOCARRAY added 31# 2013-09-19 FLTO help text improved. 32# 2013-07-18 Enable ACX_CHECK_COMPILER_FLAG to test for -Wstrict-prototypes 33# 2013-06-25 FLTO has --disable-flto option. 34# 2013-05-03 Update W32_SLEEP for newer mingw that links but not defines it. 35# 2013-03-22 Fix ACX_RSRC_VERSION for long version numbers. 36# 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h. 37# 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns. 38# 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc. 39# Fix ACX_MALLOC for redefined malloc error. 40# Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32 41# 2011-11-10 Fix FLTO test to not drop a.out in current directory. 42# 2011-11-01 Fix FLTO test for llvm on Lion. 43# 2011-08-01 Fix nonblock test (broken at v13). 44# 2011-08-01 Fix autoconf 2.68 warnings 45# 2011-06-23 Add ACX_CHECK_FLTO to check -flto. 46# 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66. 47# 2010-07-02 Add check for ss_family (for minix). 48# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS. 49# 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end. 50# 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS separate, -ldl 51# 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN 52# 2010-01-20 added AHX_COONFIG_STRLCAT 53# 2009-07-14 U_CHAR detection improved for windows crosscompile. 54# added ACX_FUNC_MALLOC 55# fixup some #if to #ifdef 56# NONBLOCKING test for mingw crosscompile. 57# 2009-07-13 added ACX_WITH_SSL_OPTIONAL 58# 2009-07-03 fixup LDFLAGS for empty ssl dir. 59# 60# Automates some of the checking constructs. Aims at portability for POSIX. 61# Documentation for functions is below. 62# 63# the following macro's are provided in this file: 64# (see below for details on each macro). 65# 66# ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc. 67# ACX_RSRC_VERSION - create windows resource version number. 68# ACX_CHECK_COMPILER_FLAG - see if cc supports a flag. 69# ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below). 70# ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly. 71# ACX_DEPFLAG - find cc dependency flags. 72# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX. 73# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax. 74# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax. 75# ACX_CHECK_FLTO - see if cc supports -flto and use it if so. 76# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved. 77# ACX_TYPE_U_CHAR - u_char type. 78# ACX_TYPE_RLIM_T - rlim_t type. 79# ACX_TYPE_SOCKLEN_T - socklen_t type. 80# ACX_TYPE_IN_ADDR_T - in_addr_t type. 81# ACX_TYPE_IN_PORT_T - in_port_t type. 82# ACX_ARG_RPATH - add --disable-rpath option. 83# ACX_WITH_SSL - add --with-ssl option, link -lcrypto. 84# ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto, 85# where --without-ssl is also accepted 86# ACX_LIB_SSL - setup to link -lssl. 87# ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files. 88# ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably. 89# ACX_FUNC_DEPRECATED - see if func is deprecated. 90# ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work. 91# ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments. 92# ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably. 93# ACX_FUNC_MALLOC - check malloc, define replacement . 94# AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format. 95# AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused. 96# AHX_CONFIG_FSEEKO - define fseeko, ftello fallback. 97# AHX_CONFIG_RAND_MAX - define RAND_MAX if needed. 98# AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed. 99# AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed. 100# AHX_CONFIG_SNPRINTF - snprintf compat prototype 101# AHX_CONFIG_INET_PTON - inet_pton compat prototype 102# AHX_CONFIG_INET_NTOP - inet_ntop compat prototype 103# AHX_CONFIG_INET_ATON - inet_aton compat prototype 104# AHX_CONFIG_MEMMOVE - memmove compat prototype 105# AHX_CONFIG_STRLCAT - strlcat compat prototype 106# AHX_CONFIG_STRLCPY - strlcpy compat prototype 107# AHX_CONFIG_GMTIME_R - gmtime_r compat prototype 108# AHX_CONFIG_W32_SLEEP - w32 compat for sleep 109# AHX_CONFIG_W32_USLEEP - w32 compat for usleep 110# AHX_CONFIG_W32_RANDOM - w32 compat for random 111# AHX_CONFIG_W32_SRANDOM - w32 compat for srandom 112# AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T. 113# ACX_CFLAGS_STRIP - strip one flag from CFLAGS 114# ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS 115# AHX_CONFIG_FLAG_OMITTED - define omitted flag 116# AHX_CONFIG_FLAG_EXT - define omitted extension flag 117# AHX_CONFIG_EXT_FLAGS - define the stripped extension flags 118# ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters. 119# AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED. 120# ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 121# ACX_CHECK_PIE - add --enable-pie option and check if works 122# ACX_CHECK_RELRO_NOW - add --enable-relro-now option and check it 123# 124 125dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines. 126dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var) 127dnl $1: the text to change. 128dnl $2: the result. 129AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`" 130]) 131 132dnl Calculate comma separated windows-resource numbers from package version. 133dnl Picks the first three(,0) or four numbers out of the name. 134dnl $1: variable for the result 135AC_DEFUN([ACX_RSRC_VERSION], 136[$1=[`echo $PACKAGE_VERSION | sed -e 's/^[^0-9]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^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]*\([0-9][0-9]*\)[^0-9][^0-9]*\([0-9][0-9]*\)[^0-9]*$/\1,\2,\3,0/' `] 137]) 138 139dnl Routine to help check for compiler flags. 140dnl Checks if the compiler will accept the flag. 141dnl $1: the flag without a - in front, so g to check -g. 142dnl $2: executed if yes 143dnl $3: executed if no 144AC_DEFUN([ACX_CHECK_COMPILER_FLAG], 145[ 146AC_REQUIRE([AC_PROG_CC]) 147AC_MSG_CHECKING(whether $CC supports -$1) 148cache=`echo $1 | sed 'y%.=/+-%___p_%'` 149AC_CACHE_VAL(cv_prog_cc_flag_$cache, 150[ 151echo 'void f(void){}' >conftest.c 152if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then 153eval "cv_prog_cc_flag_$cache=yes" 154else 155eval "cv_prog_cc_flag_$cache=no" 156fi 157rm -f conftest conftest.o conftest.c 158]) 159if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then 160AC_MSG_RESULT(yes) 161: 162$2 163else 164AC_MSG_RESULT(no) 165: 166$3 167fi 168]) 169 170dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED 171dnl ERRFLAG: result, compiler flag to turn warnings into errors 172AC_DEFUN([ACX_CHECK_ERROR_FLAGS], 173[ 174ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"]) 175ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"], 176 [ERRFLAG="$ERRFLAG -errfmt"]) 177]) 178 179dnl Routine to help check for needed compiler flags. 180dnl $1: flags for CC 181dnl $2: the includes and code 182dnl $3: if the given code only compiles with the flag, execute argument 3 183dnl $4: if the given code compiles without the flag, execute argument 4 184dnl $5: with and without flag the compile fails, execute argument 5. 185AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED], 186[ 187AC_REQUIRE([AC_PROG_CC]) 188AC_REQUIRE([ACX_CHECK_ERROR_FLAGS]) 189AC_MSG_CHECKING(whether we need $1 as a flag for $CC) 190cache=AS_TR_SH($1) 191dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'` 192AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache, 193[ 194echo '$2' > conftest.c 195echo 'void f(void){}' >>conftest.c 196if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then 197eval "cv_prog_cc_flag_needed_$cache=no" 198else 199[ 200if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then 201eval "cv_prog_cc_flag_needed_$cache=yes" 202else 203eval "cv_prog_cc_flag_needed_$cache=fail" 204#echo 'Test with flag fails too!' 205#cat conftest.c 206#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 207#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 208#exit 1 209fi 210] 211fi 212rm -f conftest conftest.c conftest.o 213]) 214if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then 215AC_MSG_RESULT(yes) 216: 217$3 218else 219if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then 220AC_MSG_RESULT(no) 221#echo 'Test with flag is no!' 222#cat conftest.c 223#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1" 224#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1` 225#exit 1 226: 227$4 228else 229AC_MSG_RESULT(failed) 230: 231$5 232fi 233fi 234]) 235 236dnl Check for CC dependency flag 237dnl DEPFLAG: set to flag that generates dependencies. 238AC_DEFUN([ACX_DEPFLAG], 239[ 240AC_MSG_CHECKING([$CC dependency flag]) 241echo 'void f(void){}' >conftest.c 242if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then 243 DEPFLAG="-MM" 244else 245 if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then 246 DEPFLAG="-xM1" 247 else 248 DEPFLAG="-MM" # dunno do something 249 fi 250fi 251AC_MSG_RESULT($DEPFLAG) 252rm -f conftest.c 253AC_SUBST(DEPFLAG) 254]) 255 256dnl Determine flags that gives POSIX and BSD functionality. 257dnl CFLAGS is modified for the result. 258AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND], 259[ 260ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"]) 261ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"]) 262 263AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT]) 264 265ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE, 266[ 267#include "confdefs.h" 268#include <stdlib.h> 269#include <ctype.h> 270#include <sys/time.h> 271#ifdef HAVE_TIME_H 272#include <time.h> 273#endif 274#include <unistd.h> 275#include <netdb.h> 276#ifdef HAVE_GETOPT_H 277#include <getopt.h> 278#endif 279 280int test(void) { 281 int a; 282 char **opts = NULL; 283 struct timeval tv; 284 char *t; 285 time_t time = 0; 286 char *buf = NULL; 287 const char* str = NULL; 288 struct msghdr msg; 289 msg.msg_control = 0; 290 t = ctime_r(&time, buf); 291 tv.tv_usec = 10; 292 srandom(32); 293 a = getopt(2, opts, "a"); 294 a = isascii(32); 295 str = gai_strerror(0); 296 if(str && t && tv.tv_usec && msg.msg_control) 297 a = 0; 298 return a; 299} 300], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"]) 301 302ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE, 303[ 304#include "confdefs.h" 305#include <stdlib.h> 306#include <ctype.h> 307#include <sys/time.h> 308#ifdef HAVE_TIME_H 309#include <time.h> 310#endif 311#include <unistd.h> 312#include <netdb.h> 313#ifdef HAVE_GETOPT_H 314#include <getopt.h> 315#endif 316 317int test(void) { 318 int a; 319 char **opts = NULL; 320 struct timeval tv; 321 char *t; 322 time_t time = 0; 323 char *buf = NULL; 324 const char* str = NULL; 325 struct msghdr msg; 326 msg.msg_control = 0; 327 t = ctime_r(&time, buf); 328 tv.tv_usec = 10; 329 srandom(32); 330 a = getopt(2, opts, "a"); 331 a = isascii(32); 332 str = gai_strerror(0); 333 if(str && t && tv.tv_usec && msg.msg_control) 334 a = 0; 335 return a; 336} 337], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"]) 338 339ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG, 340[ 341#include <stdbool.h> 342#include <ctype.h> 343int test(void) { 344 int a = 0; 345 return a; 346} 347], [CFLAGS="$CFLAGS $C99FLAG"]) 348 349ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE -D_DEFAULT_SOURCE, 350[ 351#include <ctype.h> 352 353int test(void) { 354 int a; 355 a = isascii(32); 356 return a; 357} 358], [CFLAGS="$CFLAGS -D_BSD_SOURCE -D_DEFAULT_SOURCE"]) 359 360ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE, 361[ 362#include <netinet/in.h> 363 364int test(void) { 365 struct in6_pktinfo inf; 366 int a = (int)sizeof(inf); 367 return a; 368} 369], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 370 371# check again for GNU_SOURCE for setresgid. May fail if setresgid 372# is not available at all. -D_FRSRESGID is to make this check unique. 373# otherwise we would get the previous cached result. 374ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID, 375[ 376#include <unistd.h> 377 378int test(void) { 379 int a = setresgid(0,0,0); 380 a = setresuid(0,0,0); 381 return a; 382} 383], [CFLAGS="$CFLAGS -D_GNU_SOURCE"]) 384 385ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112, 386[ 387#include "confdefs.h" 388#ifdef HAVE_TIME_H 389#include <time.h> 390#endif 391#include <netdb.h> 392 393int test(void) { 394 int a = 0; 395 char *t; 396 time_t time = 0; 397 char *buf = NULL; 398 const char* str = NULL; 399 t = ctime_r(&time, buf); 400 str = gai_strerror(0); 401 if(t && str) 402 a = 0; 403 return a; 404} 405], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"]) 406 407ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__, 408[ 409#include "confdefs.h" 410#include <stdlib.h> 411#include <ctype.h> 412#include <sys/time.h> 413#ifdef HAVE_TIME_H 414#include <time.h> 415#endif 416#include <unistd.h> 417#ifdef HAVE_GETOPT_H 418#include <getopt.h> 419#endif 420 421int test(void) { 422 int a; 423 char **opts = NULL; 424 struct timeval tv; 425 tv.tv_usec = 10; 426 srandom(32); 427 a = getopt(2, opts, "a"); 428 a = isascii(32); 429 if(tv.tv_usec) 430 a = 0; 431 return a; 432} 433], [CFLAGS="$CFLAGS -D__EXTENSIONS__"]) 434 435])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND 436 437dnl Check if CC supports -flto. 438dnl in a way that supports clang and suncc (that flag does something else, 439dnl but fails to link). It sets it in CFLAGS if it works. 440AC_DEFUN([ACX_CHECK_FLTO], [ 441 AC_ARG_ENABLE([flto], AS_HELP_STRING([--disable-flto], [Disable link-time optimization (gcc specific option)])) 442 AS_IF([test "x$enable_flto" != "xno"], [ 443 AC_MSG_CHECKING([if $CC supports -flto]) 444 BAKCFLAGS="$CFLAGS" 445 CFLAGS="$CFLAGS -flto" 446 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [ 447 if $CC $CFLAGS -o conftest conftest.c 2>&1 | $GREP -e "warning: no debug symbols in executable" -e "warning: object" >/dev/null; then 448 CFLAGS="$BAKCFLAGS" 449 AC_MSG_RESULT(no) 450 else 451 AC_MSG_RESULT(yes) 452 fi 453 rm -f conftest conftest.c conftest.o 454 ], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)]) 455 ]) 456]) 457 458dnl Check the printf-format attribute (if any) 459dnl result in HAVE_ATTR_FORMAT. 460dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE. 461AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE], 462[AC_REQUIRE([AC_PROG_CC]) 463AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute) 464AC_CACHE_VAL(ac_cv_c_format_attribute, 465[ac_cv_c_format_attribute=no 466AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h> 467void f (char *format, ...) __attribute__ ((format (printf, 1, 2))); 468void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2))); 469]], [[ 470 f ("%s", "str"); 471]])],[ac_cv_c_format_attribute="yes"],[ac_cv_c_format_attribute="no"]) 472]) 473 474AC_MSG_RESULT($ac_cv_c_format_attribute) 475if test $ac_cv_c_format_attribute = yes; then 476 AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute]) 477fi 478])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE 479 480dnl Setup ATTR_FORMAT config.h parts. 481dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also. 482AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE], 483[ 484#ifdef HAVE_ATTR_FORMAT 485# define ATTR_FORMAT(archetype, string_index, first_to_check) \ 486 __attribute__ ((format (archetype, string_index, first_to_check))) 487#else /* !HAVE_ATTR_FORMAT */ 488# define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */ 489#endif /* !HAVE_ATTR_FORMAT */ 490]) 491 492dnl Check how to mark function arguments as unused. 493dnl result in HAVE_ATTR_UNUSED. 494dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also. 495AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE], 496[AC_REQUIRE([AC_PROG_CC]) 497AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute) 498AC_CACHE_VAL(ac_cv_c_unused_attribute, 499[ac_cv_c_unused_attribute=no 500AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h> 501void f (char *u __attribute__((unused))); 502]], [[ 503 f ("x"); 504]])],[ac_cv_c_unused_attribute="yes"],[ac_cv_c_unused_attribute="no"]) 505]) 506 507dnl Setup ATTR_UNUSED config.h parts. 508dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also. 509AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE], 510[ 511#if defined(DOXYGEN) 512# define ATTR_UNUSED(x) x 513#elif defined(__cplusplus) 514# define ATTR_UNUSED(x) 515#elif defined(HAVE_ATTR_UNUSED) 516# define ATTR_UNUSED(x) x __attribute__((unused)) 517#else /* !HAVE_ATTR_UNUSED */ 518# define ATTR_UNUSED(x) x 519#endif /* !HAVE_ATTR_UNUSED */ 520]) 521 522AC_MSG_RESULT($ac_cv_c_unused_attribute) 523if test $ac_cv_c_unused_attribute = yes; then 524 AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute]) 525fi 526])dnl 527 528dnl Pre-fun for ACX_LIBTOOL_C_ONLY 529AC_DEFUN([ACX_LIBTOOL_C_PRE], [ 530# skip these tests, we do not need them. 531AC_DEFUN([AC_PROG_F77], [:]) 532AC_DEFUN([AC_PROG_FC], [:]) 533AC_DEFUN([AC_PROG_CXX], [:]) 534AC_DEFUN([AC_PROG_CXXCPP], [:]) 535AC_DEFUN([AC_PROG_OBJC], [:]) 536AC_DEFUN([AC_PROG_OBJCCPP], [:]) 537AC_DEFUN([AC_LIBTOOL_CXX], [:]) 538AC_DEFUN([AC_LIBTOOL_F77], [:]) 539# always use ./libtool unless override from commandline (libtool=mylibtool) 540if test -z "$libtool"; then 541 libtool="./libtool" 542fi 543AC_SUBST(libtool) 544# avoid libtool max commandline length test on systems that fork slowly. 545AC_CANONICAL_HOST 546if echo "$host_os" | grep "sunos4" >/dev/null; then 547 lt_cv_sys_max_cmd_len=32750; 548fi 549AC_PATH_TOOL(AR, ar, [false]) 550if test $AR = false; then 551 AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it]) 552fi 553]) 554 555dnl Perform libtool check, portably, only for C 556AC_DEFUN([ACX_LIBTOOL_C_ONLY], [ 557dnl as a requirement so that is gets called before LIBTOOL 558dnl because libtools 'AC_REQUIRE' names are right after this one, before 559dnl this function contents. 560AC_REQUIRE([ACX_LIBTOOL_C_PRE]) 561LT_INIT 562]) 563 564dnl Detect if u_char type is defined, otherwise define it. 565AC_DEFUN([ACX_TYPE_U_CHAR], 566[AC_CHECK_TYPE([u_char], , 567 [AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [ 568AC_INCLUDES_DEFAULT 569#ifdef HAVE_WINSOCK2_H 570# include <winsock2.h> 571#endif 572]) ]) 573 574dnl Detect if rlim_t type is defined, otherwise define it. 575AC_DEFUN([ACX_TYPE_RLIM_T], 576[AC_CHECK_TYPE(rlim_t, , 577 [AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [ 578AC_INCLUDES_DEFAULT 579#ifdef HAVE_SYS_RESOURCE_H 580# include <sys/resource.h> 581#endif 582]) ]) 583 584dnl Detect if socklen_t type is defined, otherwise define it. 585AC_DEFUN([ACX_TYPE_SOCKLEN_T], 586[ 587AC_CHECK_TYPE(socklen_t, , 588 [AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [ 589AC_INCLUDES_DEFAULT 590#ifdef HAVE_SYS_SOCKET_H 591# include <sys/socket.h> 592#endif 593#ifdef HAVE_WS2TCPIP_H 594# include <ws2tcpip.h> 595#endif 596]) ]) 597 598dnl Detect if in_addr_t type is defined, otherwise define it. 599AC_DEFUN([ACX_TYPE_IN_ADDR_T], 600[ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [ 601AC_INCLUDES_DEFAULT 602#ifdef HAVE_SYS_TYPES_H 603# include <sys/types.h> 604#endif 605#ifdef HAVE_NETINET_IN_H 606# include <netinet/in.h> 607#endif 608]) ]) 609 610dnl Detect if in_port_t type is defined, otherwise define it. 611AC_DEFUN([ACX_TYPE_IN_PORT_T], 612[ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [ 613AC_INCLUDES_DEFAULT 614#ifdef HAVE_SYS_TYPES_H 615# include <sys/types.h> 616#endif 617#ifdef HAVE_NETINET_IN_H 618# include <netinet/in.h> 619#endif 620]) ]) 621 622dnl Add option to disable the evil rpath. Check whether to use rpath or not. 623dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool. 624AC_DEFUN([ACX_ARG_RPATH], 625[ 626AC_ARG_ENABLE(rpath, 627 [ --disable-rpath disable hardcoded rpath (default=enabled)], 628 enable_rpath=$enableval, enable_rpath=yes) 629if test "x$enable_rpath" = xno; then 630 dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.]) 631 AC_CONFIG_COMMANDS([disable-rpath], [ 632 sed < libtool > libtool-2 \ 633 's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/' 634 mv libtool-2 libtool 635 chmod 755 libtool 636 libtool="./libtool" 637 ]) 638fi 639]) 640 641dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is 642dnl an absolute path. 643dnl $1: the pathname to add. 644AC_DEFUN([ACX_RUNTIME_PATH_ADD], [ 645 if test "x$enable_rpath" = xyes; then 646 if echo "$1" | grep "^/" >/dev/null; then 647 RUNTIME_PATH="$RUNTIME_PATH -R$1" 648 fi 649 fi 650]) 651 652dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL 653dnl Takes one argument; the withval checked in those 2 functions 654dnl sets up the environment for the given openssl path 655AC_DEFUN([ACX_SSL_CHECKS], [ 656 withval=$1 657 if test x_$withval != x_no; then 658 AC_MSG_CHECKING(for SSL) 659 if test -n "$withval"; then 660 dnl look for openssl install with different version, eg. 661 dnl in /usr/include/openssl11/openssl/ssl.h 662 dnl and /usr/lib64/openssl11/libssl.so 663 dnl with the --with-ssl=/usr/include/openssl11 664 if test ! -f "$withval/include/openssl/ssl.h" -a -f "$withval/openssl/ssl.h"; then 665 ssldir="$withval" 666 found_ssl="yes" 667 withval="" 668 ssldir_include="$ssldir" 669 dnl find the libdir 670 ssldir_lib=`echo $ssldir | sed -e 's/include/lib/'` 671 if test -f "$ssldir_lib/libssl.a" -o -f "$ssldir_lib/libssl.so"; then 672 : # found here 673 else 674 ssldir_lib=`echo $ssldir | sed -e 's/include/lib64/'` 675 if test -f "$ssldir_lib/libssl.a" -o -f "$ssldir_lib/libssl.so"; then 676 : # found here 677 else 678 AC_MSG_ERROR([Could not find openssl lib file, $ssldir_lib/libssl.[so,a], pass like "/usr/local" or "/usr/include/openssl11"]) 679 fi 680 fi 681 fi 682 fi 683 if test x_$withval = x_ -o x_$withval = x_yes; then 684 withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr" 685 fi 686 for dir in $withval; do 687 ssldir="$dir" 688 if test -f "$dir/include/openssl/ssl.h"; then 689 found_ssl="yes" 690 ssldir_include="$ssldir/include" 691 if test ! -d "$ssldir/lib" -a -d "$ssldir/lib64"; then 692 ssldir_lib="$ssldir/lib64" 693 else 694 ssldir_lib="$ssldir/lib" 695 fi 696 break; 697 fi 698 done 699 if test x_$found_ssl != x_yes; then 700 AC_MSG_ERROR(Cannot find the SSL libraries in $withval) 701 else 702 AC_MSG_RESULT(found in $ssldir) 703 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.]) 704 HAVE_SSL=yes 705 dnl assume /usr is already in the include, lib and dynlib paths. 706 if test "$ssldir" != "/usr"; then 707 CPPFLAGS="$CPPFLAGS -I$ssldir_include" 708 LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir_include" 709 LDFLAGS="$LDFLAGS -L$ssldir_lib" 710 LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir_lib" 711 ACX_RUNTIME_PATH_ADD([$ssldir_lib]) 712 fi 713 714 AC_MSG_CHECKING([for EVP_sha256 in -lcrypto]) 715 LIBS="$LIBS -lcrypto" 716 LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto" 717 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ 718 int EVP_sha256(void); 719 (void)EVP_sha256(); 720 ]])],[ 721 AC_MSG_RESULT(yes) 722 AC_DEFINE([HAVE_EVP_SHA256], 1, 723 [If you have EVP_sha256]) 724 ],[ 725 AC_MSG_RESULT(no) 726 # check if -lwsock32 or -lgdi32 are needed. 727 BAKLIBS="$LIBS" 728 BAKSSLLIBS="$LIBSSL_LIBS" 729 LIBS="$LIBS -lgdi32 -lws2_32" 730 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32" 731 AC_MSG_CHECKING([if -lcrypto needs -lgdi32]) 732 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ 733 int EVP_sha256(void); 734 (void)EVP_sha256(); 735 ]])],[ 736 AC_DEFINE([HAVE_EVP_SHA256], 1, 737 [If you have EVP_sha256]) 738 AC_MSG_RESULT(yes) 739 ],[ 740 AC_MSG_RESULT(no) 741 LIBS="$BAKLIBS" 742 LIBSSL_LIBS="$BAKSSLLIBS" 743 744 LIBS="$LIBS -lgdi32 -lws2_32 -lcrypt32" 745 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32 -lcrypt32" 746 AC_MSG_CHECKING([if -lcrypto needs -lgdi32 -lws2_32 -lcrypt32]) 747 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ 748 int EVP_sha256(void); 749 (void)EVP_sha256(); 750 ]])],[ 751 AC_DEFINE([HAVE_EVP_SHA256], 1, 752 [If you have EVP_sha256]) 753 AC_MSG_RESULT(yes) 754 ],[ 755 AC_MSG_RESULT(no) 756 LIBS="$BAKLIBS" 757 LIBSSL_LIBS="$BAKSSLLIBS" 758 759 LIBS="$LIBS -lgdi32 -lws2_32 -lcrypt32 -l:libssp.a" 760 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32 -lcrypt32 -l:libssp.a" 761 AC_MSG_CHECKING([if -lcrypto needs -lgdi32 -lws2_32 -lcrypt32 -l:libssp.a]) 762 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ 763 int EVP_sha256(void); 764 (void)EVP_sha256(); 765 ]])],[ 766 AC_DEFINE([HAVE_EVP_SHA256], 1, 767 [If you have EVP_sha256]) 768 AC_MSG_RESULT(yes) 769 ],[ 770 AC_MSG_RESULT(no) 771 LIBS="$BAKLIBS" 772 LIBSSL_LIBS="$BAKSSLLIBS" 773 774 LIBS="$LIBS -ldl" 775 LIBSSL_LIBS="$LIBSSL_LIBS -ldl" 776 AC_MSG_CHECKING([if -lcrypto needs -ldl]) 777 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ 778 int EVP_sha256(void); 779 (void)EVP_sha256(); 780 ]])],[ 781 AC_DEFINE([HAVE_EVP_SHA256], 1, 782 [If you have EVP_sha256]) 783 AC_MSG_RESULT(yes) 784 ],[ 785 AC_MSG_RESULT(no) 786 LIBS="$BAKLIBS" 787 LIBSSL_LIBS="$BAKSSLLIBS" 788 LIBS="$LIBS -ldl -pthread" 789 LIBSSL_LIBS="$LIBSSL_LIBS -ldl -pthread" 790 AC_MSG_CHECKING([if -lcrypto needs -ldl -pthread]) 791 AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[ 792 int EVP_sha256(void); 793 (void)EVP_sha256(); 794 ]])],[ 795 AC_DEFINE([HAVE_EVP_SHA256], 1, 796 [If you have EVP_sha256]) 797 AC_MSG_RESULT(yes) 798 ],[ 799 AC_MSG_RESULT(no) 800 AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required]) 801 ]) 802 ]) 803 ]) 804 ]) 805 ]) 806 ]) 807 fi 808 AC_SUBST(HAVE_SSL) 809 AC_SUBST(RUNTIME_PATH) 810 fi 811AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT]) 812AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT]) 813AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT]) 814])dnl End of ACX_SSL_CHECKS 815 816dnl Check for SSL, where SSL is mandatory 817dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 818dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 819dnl Checks main header files of SSL. 820dnl 821AC_DEFUN([ACX_WITH_SSL], 822[ 823AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl=pathname],[enable SSL (will check /usr/local/ssl 824 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr or specify like /usr/include/openssl11)]),[ 825 ],[ 826 withval="yes" 827 ]) 828 if test x_$withval = x_no; then 829 AC_MSG_ERROR([Need SSL library to do digital signature cryptography]) 830 fi 831 ACX_SSL_CHECKS($withval) 832])dnl End of ACX_WITH_SSL 833 834dnl Check for SSL, where ssl is optional (--without-ssl is allowed) 835dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found 836dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. 837dnl Checks main header files of SSL. 838dnl 839AC_DEFUN([ACX_WITH_SSL_OPTIONAL], 840[ 841AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl=pathname],[enable SSL (will check /usr/local/ssl 842 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr or specify like /usr/include/openssl11)]),[ 843 ],[ 844 withval="yes" 845 ]) 846 ACX_SSL_CHECKS($withval) 847])dnl End of ACX_WITH_SSL_OPTIONAL 848 849dnl Setup to use -lssl 850dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one). 851AC_DEFUN([ACX_LIB_SSL], 852[ 853# check if libssl needs libdl 854BAKLIBS="$LIBS" 855LIBS="-lssl $LIBS" 856AC_MSG_CHECKING([if libssl needs libdl]) 857AC_TRY_LINK_FUNC([SSL_CTX_new], [ 858 AC_MSG_RESULT([no]) 859 LIBS="$BAKLIBS" 860] , [ 861 AC_MSG_RESULT([yes]) 862 LIBS="$BAKLIBS" 863 AC_SEARCH_LIBS([dlopen], [dl]) 864]) ])dnl End of ACX_LIB_SSL 865 866dnl Setup to use very large files (>2Gb). 867dnl setups fseeko and its own 868AC_DEFUN([ACX_SYS_LARGEFILE], 869[ 870AC_SYS_LARGEFILE 871dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko 872ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1, 873[ 874#include <stdio.h> 875int test(void) { 876 int a = fseeko(stdin, 0, 0); 877 return a; 878} 879], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"]) 880]) 881 882dnl Check getaddrinfo. 883dnl Works on linux, solaris, bsd and windows(links winsock). 884dnl defines HAVE_GETADDRINFO, USE_WINSOCK. 885AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES], 886[AC_REQUIRE([AC_PROG_CC]) 887AC_MSG_CHECKING(for getaddrinfo) 888ac_cv_func_getaddrinfo=no 889AC_LINK_IFELSE( 890[AC_LANG_SOURCE([[ 891#ifdef __cplusplus 892extern "C" 893{ 894#endif 895char* getaddrinfo(); 896char* (*f) () = getaddrinfo; 897#ifdef __cplusplus 898} 899#endif 900int main(void) { 901 ; 902 return 0; 903} 904]])], 905dnl this case on linux, solaris, bsd 906[ac_cv_func_getaddrinfo="yes" 907dnl see if on windows 908if test "$ac_cv_header_windows_h" = "yes"; then 909 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 910 USE_WINSOCK="1" 911 if echo "$LIBS" | grep 'lws2_32' >/dev/null; then 912 : 913 else 914 LIBS="$LIBS -lws2_32" 915 fi 916fi 917], 918dnl no quick getaddrinfo, try mingw32 and winsock2 library. 919dnl perhaps getaddrinfo needs only the include 920AC_LINK_IFELSE( 921[AC_LANG_PROGRAM( 922[ 923#ifdef HAVE_WS2TCPIP_H 924#include <ws2tcpip.h> 925#endif 926], 927[ 928 (void)getaddrinfo(NULL, NULL, NULL, NULL); 929] 930)], 931[ 932ac_cv_func_getaddrinfo="yes" 933AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 934USE_WINSOCK="1" 935], 936 937ORIGLIBS="$LIBS" 938LIBS="$LIBS -lws2_32" 939AC_LINK_IFELSE( 940[AC_LANG_PROGRAM( 941[ 942#ifdef HAVE_WS2TCPIP_H 943#include <ws2tcpip.h> 944#endif 945], 946[ 947 (void)getaddrinfo(NULL, NULL, NULL, NULL); 948] 949)], 950[ 951ac_cv_func_getaddrinfo="yes" 952dnl already: LIBS="$LIBS -lws2_32" 953AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) 954USE_WINSOCK="1" 955], 956[ 957ac_cv_func_getaddrinfo="no" 958LIBS="$ORIGLIBS" 959]) 960) 961) 962 963AC_MSG_RESULT($ac_cv_func_getaddrinfo) 964if test $ac_cv_func_getaddrinfo = yes; then 965 AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available]) 966fi 967])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES 968 969dnl check if a function is deprecated. defines DEPRECATED_func in config.h. 970dnl $1: function name 971dnl $2: C-statement that calls the function. 972dnl $3: includes for the program. 973dnl $4: executes if yes 974dnl $5: executes if no 975AC_DEFUN([ACX_FUNC_DEPRECATED], 976[ 977AC_REQUIRE([AC_PROG_CC]) 978AC_MSG_CHECKING(if $1 is deprecated) 979cache=`echo $1 | sed 'y%.=/+-%___p_%'` 980AC_CACHE_VAL(cv_cc_deprecated_$cache, 981[ 982echo '$3' >conftest.c 983echo 'void f(void){ $2 }' >>conftest.c 984if test -z "`$CC $CPPFLAGS $CFLAGS -c conftest.c 2>&1 | grep -e deprecated -e unavailable`"; then 985eval "cv_cc_deprecated_$cache=no" 986else 987eval "cv_cc_deprecated_$cache=yes" 988fi 989rm -f conftest conftest.o conftest.c 990]) 991if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then 992AC_MSG_RESULT(yes) 993AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated]) 994: 995$4 996else 997AC_MSG_RESULT(no) 998: 999$5 1000fi 1001])dnl end of ACX_FUNC_DEPRECATED 1002 1003dnl check if select and nonblocking sockets actually work. 1004dnl Needs fork(2) and select(2). 1005dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from 1006dnl a nonblocking socket do not work, a new call to select is necessary. 1007AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN], 1008[ 1009AC_MSG_CHECKING([if nonblocking sockets work]) 1010if echo $host | grep mingw >/dev/null; then 1011 AC_MSG_RESULT([no (windows)]) 1012 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 1013else 1014AC_RUN_IFELSE([ 1015AC_LANG_SOURCE([[ 1016#include <stdio.h> 1017#include <string.h> 1018#include <stdlib.h> 1019#include <fcntl.h> 1020#include <errno.h> 1021#ifdef HAVE_SYS_TYPES_H 1022#include <sys/types.h> 1023#endif 1024#ifdef HAVE_SYS_SELECT_H 1025#include <sys/select.h> 1026#endif 1027#ifdef HAVE_SYS_SOCKET_H 1028#include <sys/socket.h> 1029#endif 1030#ifdef HAVE_NETINET_IN_H 1031#include <netinet/in.h> 1032#endif 1033#ifdef HAVE_ARPA_INET_H 1034#include <arpa/inet.h> 1035#endif 1036#ifdef HAVE_UNISTD_H 1037#include <unistd.h> 1038#endif 1039#ifdef HAVE_TIME_H 1040#include <time.h> 1041#endif 1042 1043int main(void) 1044{ 1045 int port; 1046 int sfd, cfd; 1047 int num = 10; 1048 int i, p; 1049 struct sockaddr_in a; 1050 /* test if select and nonblocking reads work well together */ 1051 /* open port. 1052 fork child to send 10 messages. 1053 select to read. 1054 then try to nonblocking read the 10 messages 1055 then, nonblocking read must give EAGAIN 1056 */ 1057 1058 port = 12345 + (time(0)%32); 1059 sfd = socket(PF_INET, SOCK_DGRAM, 0); 1060 if(sfd == -1) { 1061 perror("socket"); 1062 return 1; 1063 } 1064 memset(&a, 0, sizeof(a)); 1065 a.sin_family = AF_INET; 1066 a.sin_port = htons(port); 1067 a.sin_addr.s_addr = inet_addr("127.0.0.1"); 1068 if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 1069 perror("bind"); 1070 return 1; 1071 } 1072 if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) { 1073 perror("fcntl"); 1074 return 1; 1075 } 1076 1077 cfd = socket(PF_INET, SOCK_DGRAM, 0); 1078 if(cfd == -1) { 1079 perror("client socket"); 1080 return 1; 1081 } 1082 a.sin_port = 0; 1083 if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) { 1084 perror("client bind"); 1085 return 1; 1086 } 1087 a.sin_port = htons(port); 1088 1089 /* no handler, causes exit in 10 seconds */ 1090 alarm(10); 1091 1092 /* send and receive on the socket */ 1093 if((p=fork()) == 0) { 1094 for(i=0; i<num; i++) { 1095 if(sendto(cfd, &i, sizeof(i), 0, 1096 (struct sockaddr*)&a, sizeof(a)) < 0) { 1097 perror("sendto"); 1098 return 1; 1099 } 1100 } 1101 } else { 1102 /* parent */ 1103 fd_set rset; 1104 int x; 1105 if(p == -1) { 1106 perror("fork"); 1107 return 1; 1108 } 1109 FD_ZERO(&rset); 1110 FD_SET(sfd, &rset); 1111 if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) { 1112 perror("select"); 1113 return 1; 1114 } 1115 i = 0; 1116 while(i < num) { 1117 if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) { 1118 if(errno == EAGAIN) 1119 continue; 1120 perror("recv"); 1121 return 1; 1122 } 1123 i++; 1124 } 1125 /* now we want to get EAGAIN: nonblocking goodness */ 1126 errno = 0; 1127 recv(sfd, &x, sizeof(x), 0); 1128 if(errno != EAGAIN) { 1129 perror("trying to recv again"); 1130 return 1; 1131 } 1132 /* EAGAIN encountered */ 1133 } 1134 1135 close(sfd); 1136 close(cfd); 1137 return 0; 1138} 1139]])], [ 1140 AC_MSG_RESULT([yes]) 1141], [ 1142 AC_MSG_RESULT([no]) 1143 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).]) 1144], [ 1145 AC_MSG_RESULT([crosscompile(yes)]) 1146]) 1147fi 1148])dnl End of ACX_CHECK_NONBLOCKING_BROKEN 1149 1150dnl Check if mkdir has one or two arguments. 1151dnl defines MKDIR_HAS_ONE_ARG 1152AC_DEFUN([ACX_MKDIR_ONE_ARG], 1153[ 1154AC_MSG_CHECKING([whether mkdir has one arg]) 1155AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ 1156#include <stdio.h> 1157#include <unistd.h> 1158#ifdef HAVE_WINSOCK2_H 1159#include <winsock2.h> 1160#endif 1161#ifdef HAVE_SYS_STAT_H 1162#include <sys/stat.h> 1163#endif 1164]], [[ 1165 (void)mkdir("directory"); 1166]])],[AC_MSG_RESULT(yes) 1167AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.]) 1168],[AC_MSG_RESULT(no) 1169]) 1170])dnl end of ACX_MKDIR_ONE_ARG 1171 1172dnl Check for ioctlsocket function. works on mingw32 too. 1173AC_DEFUN([ACX_FUNC_IOCTLSOCKET], 1174[ 1175# check ioctlsocket 1176AC_MSG_CHECKING(for ioctlsocket) 1177AC_LINK_IFELSE([AC_LANG_PROGRAM([ 1178#ifdef HAVE_WINSOCK2_H 1179#include <winsock2.h> 1180#endif 1181], [ 1182 (void)ioctlsocket(0, 0, NULL); 1183])], [ 1184AC_MSG_RESULT(yes) 1185AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available]) 1186],[AC_MSG_RESULT(no)]) 1187])dnl end of ACX_FUNC_IOCTLSOCKET 1188 1189dnl detect malloc and provide malloc compat prototype. 1190dnl $1: unique name for compat code 1191AC_DEFUN([ACX_FUNC_MALLOC], 1192[ 1193 AC_MSG_CHECKING([for GNU libc compatible malloc]) 1194 AC_RUN_IFELSE([AC_LANG_PROGRAM( 1195[[#if defined STDC_HEADERS || defined HAVE_STDLIB_H 1196#include <stdlib.h> 1197#else 1198char *malloc (); 1199#endif 1200]], [ if(malloc(0) != 0) return 1;]) 1201], 1202 [AC_MSG_RESULT([no]) 1203 AC_LIBOBJ(malloc) 1204 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] , 1205 [AC_MSG_RESULT([yes]) 1206 AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])], 1207 [AC_MSG_RESULT([no (crosscompile)]) 1208 AC_LIBOBJ(malloc) 1209 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ) 1210]) 1211 1212dnl Define fallback for fseeko and ftello if needed. 1213AC_DEFUN([AHX_CONFIG_FSEEKO], 1214[ 1215#ifndef HAVE_FSEEKO 1216#define fseeko fseek 1217#define ftello ftell 1218#endif /* HAVE_FSEEKO */ 1219]) 1220 1221dnl Define RAND_MAX if not defined 1222AC_DEFUN([AHX_CONFIG_RAND_MAX], 1223[ 1224#ifndef RAND_MAX 1225#define RAND_MAX 2147483647 1226#endif 1227]) 1228 1229dnl Define MAXHOSTNAMELEN if not defined 1230AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN], 1231[ 1232#ifndef MAXHOSTNAMELEN 1233#define MAXHOSTNAMELEN 256 1234#endif 1235]) 1236 1237dnl Define IPV6_MIN_MTU if not defined 1238AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU], 1239[ 1240#ifndef IPV6_MIN_MTU 1241#define IPV6_MIN_MTU 1280 1242#endif /* IPV6_MIN_MTU */ 1243]) 1244 1245dnl provide snprintf, vsnprintf compat prototype 1246dnl $1: unique name for compat code 1247AC_DEFUN([AHX_CONFIG_SNPRINTF], 1248[ 1249#ifndef HAVE_SNPRINTF 1250#define snprintf snprintf_$1 1251#define vsnprintf vsnprintf_$1 1252#include <stdarg.h> 1253int snprintf (char *str, size_t count, const char *fmt, ...); 1254int vsnprintf (char *str, size_t count, const char *fmt, va_list arg); 1255#endif /* HAVE_SNPRINTF */ 1256]) 1257 1258dnl provide inet_pton compat prototype. 1259dnl $1: unique name for compat code 1260AC_DEFUN([AHX_CONFIG_INET_PTON], 1261[ 1262#ifndef HAVE_INET_PTON 1263#define inet_pton inet_pton_$1 1264int inet_pton(int af, const char* src, void* dst); 1265#endif /* HAVE_INET_PTON */ 1266]) 1267 1268dnl provide inet_ntop compat prototype. 1269dnl $1: unique name for compat code 1270AC_DEFUN([AHX_CONFIG_INET_NTOP], 1271[ 1272#ifndef HAVE_INET_NTOP 1273#define inet_ntop inet_ntop_$1 1274const char *inet_ntop(int af, const void *src, char *dst, size_t size); 1275#endif 1276]) 1277 1278dnl provide inet_aton compat prototype. 1279dnl $1: unique name for compat code 1280AC_DEFUN([AHX_CONFIG_INET_ATON], 1281[ 1282#ifndef HAVE_INET_ATON 1283#define inet_aton inet_aton_$1 1284int inet_aton(const char *cp, struct in_addr *addr); 1285#endif 1286]) 1287 1288dnl provide memmove compat prototype. 1289dnl $1: unique name for compat code 1290AC_DEFUN([AHX_CONFIG_MEMMOVE], 1291[ 1292#ifndef HAVE_MEMMOVE 1293#define memmove memmove_$1 1294void *memmove(void *dest, const void *src, size_t n); 1295#endif 1296]) 1297 1298dnl provide strlcat compat prototype. 1299dnl $1: unique name for compat code 1300AC_DEFUN([AHX_CONFIG_STRLCAT], 1301[ 1302#ifndef HAVE_STRLCAT 1303#define strlcat strlcat_$1 1304size_t strlcat(char *dst, const char *src, size_t siz); 1305#endif 1306]) 1307 1308dnl provide strlcpy compat prototype. 1309dnl $1: unique name for compat code 1310AC_DEFUN([AHX_CONFIG_STRLCPY], 1311[ 1312#ifndef HAVE_STRLCPY 1313#define strlcpy strlcpy_$1 1314size_t strlcpy(char *dst, const char *src, size_t siz); 1315#endif 1316]) 1317 1318dnl provide gmtime_r compat prototype. 1319dnl $1: unique name for compat code 1320AC_DEFUN([AHX_CONFIG_GMTIME_R], 1321[ 1322#ifndef HAVE_GMTIME_R 1323#define gmtime_r gmtime_r_$1 1324struct tm *gmtime_r(const time_t *timep, struct tm *result); 1325#endif 1326]) 1327 1328dnl provide reallocarray compat prototype. 1329dnl $1: unique name for compat code 1330AC_DEFUN([AHX_CONFIG_REALLOCARRAY], 1331[ 1332#ifndef HAVE_REALLOCARRAY 1333#define reallocarray reallocarray$1 1334void* reallocarray(void *ptr, size_t nmemb, size_t size); 1335#endif 1336]) 1337 1338dnl provide w32 compat definition for sleep 1339AC_DEFUN([AHX_CONFIG_W32_SLEEP], 1340[ 1341#if !defined(HAVE_SLEEP) || defined(HAVE_WINDOWS_H) 1342#define sleep(x) Sleep((x)*1000) /* on win32 */ 1343#endif /* HAVE_SLEEP */ 1344]) 1345 1346dnl provide w32 compat definition for usleep 1347AC_DEFUN([AHX_CONFIG_W32_USLEEP], 1348[ 1349#ifndef HAVE_USLEEP 1350#define usleep(x) Sleep((x)/1000 + 1) /* on win32 */ 1351#endif /* HAVE_USLEEP */ 1352]) 1353 1354dnl provide w32 compat definition for random 1355AC_DEFUN([AHX_CONFIG_W32_RANDOM], 1356[ 1357#ifndef HAVE_RANDOM 1358#define random rand /* on win32, for tests only (bad random) */ 1359#endif /* HAVE_RANDOM */ 1360]) 1361 1362dnl provide w32 compat definition for srandom 1363AC_DEFUN([AHX_CONFIG_W32_SRANDOM], 1364[ 1365#ifndef HAVE_SRANDOM 1366#define srandom(x) srand(x) /* on win32, for tests only (bad random) */ 1367#endif /* HAVE_SRANDOM */ 1368]) 1369 1370dnl provide w32 compat definition for FD_SET_T 1371AC_DEFUN([AHX_CONFIG_W32_FD_SET_T], 1372[ 1373/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */ 1374#ifdef HAVE_WINSOCK2_H 1375#define FD_SET_T (u_int) 1376#else 1377#define FD_SET_T 1378#endif 1379]) 1380 1381dnl Remove an extension flag from CFLAGS, define replacement to be made. 1382dnl Used by ACX_STRIP_EXT_FLAGS. 1383dnl $1: the name of the flag, for example -D_GNU_SOURCE. 1384AC_DEFUN([ACX_CFLAGS_STRIP], 1385[ 1386 if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then 1387 CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`" 1388 AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h) 1389 fi 1390]) 1391 1392dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h 1393dnl use with ACX_DETERMINE_EXT_FLAGS. 1394AC_DEFUN([ACX_STRIP_EXT_FLAGS], 1395[ 1396 AC_MSG_NOTICE([Stripping extension flags...]) 1397 ACX_CFLAGS_STRIP(-D_GNU_SOURCE) 1398 ACX_CFLAGS_STRIP(-D_BSD_SOURCE) 1399 ACX_CFLAGS_STRIP(-D_DEFAULT_SOURCE) 1400 ACX_CFLAGS_STRIP(-D__EXTENSIONS__) 1401 ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112) 1402 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600) 1403 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1) 1404 ACX_CFLAGS_STRIP(-D_ALL_SOURCE) 1405 ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1) 1406]) dnl End of ACX_STRIP_EXT_FLAGS 1407 1408dnl define one omitted flag for config.h 1409dnl $1: flag name. -D_GNU_SOURCE 1410dnl $2: replacement define. _GNU_SOURCE 1411dnl $3: define value, 1 1412AC_DEFUN([AHX_CONFIG_FLAG_OMITTED], 1413[#if defined($1) && !defined($2) 1414#define $2 $3 1415[#]endif]) 1416 1417dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags 1418dnl $1: the -DNAME or -DNAME=value string. 1419AC_DEFUN([AHX_CONFIG_FLAG_EXT], 1420[AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,))) 1421]) 1422 1423dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS. 1424AC_DEFUN([AHX_CONFIG_EXT_FLAGS], 1425[AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE) 1426AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE) 1427AHX_CONFIG_FLAG_EXT(-D_DEFAULT_SOURCE) 1428AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__) 1429AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112) 1430AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600) 1431AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1) 1432AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE) 1433AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1) 1434]) 1435 1436dnl check if memcmp is using signed characters and replace if so. 1437AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED], 1438[AC_MSG_CHECKING([if memcmp compares unsigned]) 1439AC_RUN_IFELSE([AC_LANG_SOURCE([[ 1440#include <stdio.h> 1441#include <stdlib.h> 1442#include <string.h> 1443int main(void) 1444{ 1445 char a = 255, b = 0; 1446 if(memcmp(&a, &b, 1) < 0) 1447 return 1; 1448 return 0; 1449} 1450]])], [AC_MSG_RESULT([yes]) ], 1451[ AC_MSG_RESULT([no]) 1452 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1453 AC_LIBOBJ([memcmp]) 1454], [ AC_MSG_RESULT([cross-compile no]) 1455 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes]) 1456 AC_LIBOBJ([memcmp]) 1457]) ]) 1458 1459dnl define memcmp to its replacement, pass unique id for program as arg 1460AC_DEFUN([AHX_MEMCMP_BROKEN], [ 1461#ifdef MEMCMP_IS_BROKEN 1462#include "compat/memcmp.h" 1463#define memcmp memcmp_$1 1464int memcmp(const void *x, const void *y, size_t n); 1465#endif 1466]) 1467 1468dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family 1469AC_DEFUN([ACX_CHECK_SS_FAMILY], 1470[AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [ 1471 AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [ 1472 AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage]) 1473 ],, [AC_INCLUDES_DEFAULT 1474#ifdef HAVE_NETINET_IN_H 1475#include <netinet/in.h> 1476#endif 1477#ifdef HAVE_SYS_SOCKET_H 1478#include <sys/socket.h> 1479#endif 1480#ifdef HAVE_NETDB_H 1481#include <netdb.h> 1482#endif 1483#ifdef HAVE_ARPA_INET_H 1484#include <arpa/inet.h> 1485#endif 1486 ]) 1487], [AC_INCLUDES_DEFAULT 1488#ifdef HAVE_NETINET_IN_H 1489#include <netinet/in.h> 1490#endif 1491#ifdef HAVE_SYS_SOCKET_H 1492#include <sys/socket.h> 1493#endif 1494#ifdef HAVE_NETDB_H 1495#include <netdb.h> 1496#endif 1497#ifdef HAVE_ARPA_INET_H 1498#include <arpa/inet.h> 1499#endif 1500]) ]) 1501 1502dnl Check if CC and linker support -fPIE and -pie. 1503dnl If so, sets them in CFLAGS / LDFLAGS. 1504AC_DEFUN([ACX_CHECK_PIE], [ 1505 AC_ARG_ENABLE([pie], AS_HELP_STRING([--enable-pie], [Enable Position-Independent Executable (eg. to fully benefit from ASLR, small performance penalty)])) 1506 AS_IF([test "x$enable_pie" = "xyes"], [ 1507 AC_MSG_CHECKING([if $CC supports PIE]) 1508 BAKLDFLAGS="$LDFLAGS" 1509 BAKCFLAGS="$CFLAGS" 1510 LDFLAGS="$LDFLAGS -pie" 1511 CFLAGS="$CFLAGS -fPIE" 1512 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [ 1513 if $CC $CFLAGS $LDFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then 1514 LDFLAGS="$BAKLDFLAGS" 1515 AC_MSG_RESULT(no) 1516 else 1517 AC_MSG_RESULT(yes) 1518 fi 1519 rm -f conftest conftest.c conftest.o 1520 ], [LDFLAGS="$BAKLDFLAGS" ; CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)]) 1521 ]) 1522]) 1523 1524dnl Check if linker supports -Wl,-z,relro,-z,now. 1525dnl If so, adds it to LDFLAGS. 1526AC_DEFUN([ACX_CHECK_RELRO_NOW], [ 1527 AC_ARG_ENABLE([relro_now], AS_HELP_STRING([--enable-relro-now], [Enable full relocation binding at load-time (RELRO NOW, to protect GOT and .dtor areas)])) 1528 AS_IF([test "x$enable_relro_now" = "xyes"], [ 1529 AC_MSG_CHECKING([if $CC supports -Wl,-z,relro,-z,now]) 1530 BAKLDFLAGS="$LDFLAGS" 1531 LDFLAGS="$LDFLAGS -Wl,-z,relro,-z,now" 1532 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [ 1533 if $CC $CFLAGS $LDFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then 1534 LDFLAGS="$BAKLDFLAGS" 1535 AC_MSG_RESULT(no) 1536 else 1537 AC_MSG_RESULT(yes) 1538 fi 1539 rm -f conftest conftest.c conftest.o 1540 ], [LDFLAGS="$BAKLDFLAGS" ; AC_MSG_RESULT(no)]) 1541 ]) 1542]) 1543 1544dnl End of file 1545