1 # acx_nlnetlabs.m4 - common macros for configure checks
2 # Copyright 2009, Wouter Wijngaards, NLnet Labs.
6 # 2015-03-17 AHX_CONFIG_REALLOCARRAY added
7 # 2013-09-19 FLTO help text improved.
8 # 2013-07-18 Enable ACX_CHECK_COMPILER_FLAG to test for -Wstrict-prototypes
9 # 2013-06-25 FLTO has --disable-flto option.
10 # 2013-05-03 Update W32_SLEEP for newer mingw that links but not defines it.
11 # 2013-03-22 Fix ACX_RSRC_VERSION for long version numbers.
12 # 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h.
13 # 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns.
14 # 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc.
15 # Fix ACX_MALLOC for redefined malloc error.
16 # Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32
17 # 2011-11-10 Fix FLTO test to not drop a.out in current directory.
18 # 2011-11-01 Fix FLTO test for llvm on Lion.
19 # 2011-08-01 Fix nonblock test (broken at v13).
20 # 2011-08-01 Fix autoconf 2.68 warnings
21 # 2011-06-23 Add ACX_CHECK_FLTO to check -flto.
22 # 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66.
23 # 2010-07-02 Add check for ss_family (for minix).
24 # 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS.
25 # 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end.
26 # 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS seperate, -ldl
27 # 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN
28 # 2010-01-20 added AHX_COONFIG_STRLCAT
29 # 2009-07-14 U_CHAR detection improved for windows crosscompile.
30 # added ACX_FUNC_MALLOC
31 # fixup some #if to #ifdef
32 # NONBLOCKING test for mingw crosscompile.
33 # 2009-07-13 added ACX_WITH_SSL_OPTIONAL
34 # 2009-07-03 fixup LDFLAGS for empty ssl dir.
36 # Automates some of the checking constructs. Aims at portability for POSIX.
37 # Documentation for functions is below.
39 # the following macro's are provided in this file:
40 # (see below for details on each macro).
42 # ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc.
43 # ACX_RSRC_VERSION - create windows resource version number.
44 # ACX_CHECK_COMPILER_FLAG - see if cc supports a flag.
45 # ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below).
46 # ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly.
47 # ACX_DEPFLAG - find cc dependency flags.
48 # ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX.
49 # ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax.
50 # ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax.
51 # ACX_CHECK_FLTO - see if cc supports -flto and use it if so.
52 # ACX_LIBTOOL_C_ONLY - create libtool for C only, improved.
53 # ACX_TYPE_U_CHAR - u_char type.
54 # ACX_TYPE_RLIM_T - rlim_t type.
55 # ACX_TYPE_SOCKLEN_T - socklen_t type.
56 # ACX_TYPE_IN_ADDR_T - in_addr_t type.
57 # ACX_TYPE_IN_PORT_T - in_port_t type.
58 # ACX_ARG_RPATH - add --disable-rpath option.
59 # ACX_WITH_SSL - add --with-ssl option, link -lcrypto.
60 # ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto,
61 # where --without-ssl is also accepted
62 # ACX_LIB_SSL - setup to link -lssl.
63 # ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files.
64 # ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably.
65 # ACX_FUNC_DEPRECATED - see if func is deprecated.
66 # ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work.
67 # ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments.
68 # ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably.
69 # ACX_FUNC_MALLOC - check malloc, define replacement .
70 # AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format.
71 # AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused.
72 # AHX_CONFIG_FSEEKO - define fseeko, ftello fallback.
73 # AHX_CONFIG_RAND_MAX - define RAND_MAX if needed.
74 # AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed.
75 # AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed.
76 # AHX_CONFIG_SNPRINTF - snprintf compat prototype
77 # AHX_CONFIG_INET_PTON - inet_pton compat prototype
78 # AHX_CONFIG_INET_NTOP - inet_ntop compat prototype
79 # AHX_CONFIG_INET_ATON - inet_aton compat prototype
80 # AHX_CONFIG_MEMMOVE - memmove compat prototype
81 # AHX_CONFIG_STRLCAT - strlcat compat prototype
82 # AHX_CONFIG_STRLCPY - strlcpy compat prototype
83 # AHX_CONFIG_GMTIME_R - gmtime_r compat prototype
84 # AHX_CONFIG_W32_SLEEP - w32 compat for sleep
85 # AHX_CONFIG_W32_USLEEP - w32 compat for usleep
86 # AHX_CONFIG_W32_RANDOM - w32 compat for random
87 # AHX_CONFIG_W32_SRANDOM - w32 compat for srandom
88 # AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T.
89 # ACX_CFLAGS_STRIP - strip one flag from CFLAGS
90 # ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS
91 # AHX_CONFIG_FLAG_OMITTED - define omitted flag
92 # AHX_CONFIG_FLAG_EXT - define omitted extension flag
93 # AHX_CONFIG_EXT_FLAGS - define the stripped extension flags
94 # ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters.
95 # AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED.
96 # ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
99 dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines.
100 dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var)
101 dnl $1: the text to change.
103 AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`"
106 dnl Calculate comma separated windows-resource numbers from package version.
107 dnl Picks the first three(,0) or four numbers out of the name.
108 dnl $1: variable for the result
109 AC_DEFUN([ACX_RSRC_VERSION],
110 [$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/' `]
113 dnl Routine to help check for compiler flags.
114 dnl Checks if the compiler will accept the flag.
115 dnl $1: the flag without a - in front, so g to check -g.
116 dnl $2: executed if yes
117 dnl $3: executed if no
118 AC_DEFUN([ACX_CHECK_COMPILER_FLAG],
120 AC_REQUIRE([AC_PROG_CC])
121 AC_MSG_CHECKING(whether $CC supports -$1)
122 cache=`echo $1 | sed 'y%.=/+-%___p_%'`
123 AC_CACHE_VAL(cv_prog_cc_flag_$cache,
125 echo 'void f(void){}' >conftest.c
126 if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then
127 eval "cv_prog_cc_flag_$cache=yes"
129 eval "cv_prog_cc_flag_$cache=no"
131 rm -f conftest conftest.o conftest.c
133 if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then
144 dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED
145 dnl ERRFLAG: result, compiler flag to turn warnings into errors
146 AC_DEFUN([ACX_CHECK_ERROR_FLAGS],
148 ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"])
149 ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"],
150 [ERRFLAG="$ERRFLAG -errfmt"])
153 dnl Routine to help check for needed compiler flags.
155 dnl $2: the includes and code
156 dnl $3: if the given code only compiles with the flag, execute argument 3
157 dnl $4: if the given code compiles without the flag, execute argument 4
158 dnl $5: with and without flag the compile fails, execute argument 5.
159 AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED],
161 AC_REQUIRE([AC_PROG_CC])
162 AC_REQUIRE([ACX_CHECK_ERROR_FLAGS])
163 AC_MSG_CHECKING(whether we need $1 as a flag for $CC)
165 dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'`
166 AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache,
168 echo '$2' > conftest.c
169 echo 'void f(){}' >>conftest.c
170 if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then
171 eval "cv_prog_cc_flag_needed_$cache=no"
174 if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then
175 eval "cv_prog_cc_flag_needed_$cache=yes"
177 eval "cv_prog_cc_flag_needed_$cache=fail"
178 #echo 'Test with flag fails too!'
180 #echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
181 #echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
186 rm -f conftest conftest.c conftest.o
188 if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then
193 if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then
195 #echo 'Test with flag is no!'
197 #echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
198 #echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
203 AC_MSG_RESULT(failed)
210 dnl Check for CC dependency flag
211 dnl DEPFLAG: set to flag that generates dependencies.
212 AC_DEFUN([ACX_DEPFLAG],
214 AC_MSG_CHECKING([$CC dependency flag])
215 echo 'void f(){}' >conftest.c
216 if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then
219 if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then
222 DEPFLAG="-MM" # dunno do something
225 AC_MSG_RESULT($DEPFLAG)
230 dnl Determine flags that gives POSIX and BSD functionality.
231 dnl CFLAGS is modified for the result.
232 AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND],
234 ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"])
235 ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"])
237 AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT])
239 ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE,
241 #include "confdefs.h"
244 #include <sys/time.h>
261 const char* str = NULL;
264 t = ctime_r(&time, buf);
267 a = getopt(2, opts, "a");
269 str = gai_strerror(0);
270 if(str && t && tv.tv_usec && msg.msg_control)
274 ], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"])
276 ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE,
278 #include "confdefs.h"
281 #include <sys/time.h>
298 const char* str = NULL;
301 t = ctime_r(&time, buf);
304 a = getopt(2, opts, "a");
306 str = gai_strerror(0);
307 if(str && t && tv.tv_usec && msg.msg_control)
311 ], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"])
313 ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG,
321 ], [CFLAGS="$CFLAGS $C99FLAG"])
323 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE,
332 ], [CFLAGS="$CFLAGS -D_BSD_SOURCE"])
334 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE,
336 #include <netinet/in.h>
339 struct in6_pktinfo inf;
340 int a = (int)sizeof(inf);
343 ], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
345 # check again for GNU_SOURCE for setresgid. May fail if setresgid
346 # is not available at all. -D_FRSRESGID is to make this check unique.
347 # otherwise we would get the previous cached result.
348 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID,
353 int a = setresgid(0,0,0);
354 a = setresuid(0,0,0);
357 ], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
359 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112,
361 #include "confdefs.h"
372 const char* str = NULL;
373 t = ctime_r(&time, buf);
374 str = gai_strerror(0);
379 ], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"])
381 ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__,
383 #include "confdefs.h"
386 #include <sys/time.h>
401 a = getopt(2, opts, "a");
407 ], [CFLAGS="$CFLAGS -D__EXTENSIONS__"])
409 ])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND
411 dnl Check if CC supports -flto.
412 dnl in a way that supports clang and suncc (that flag does something else,
413 dnl but fails to link). It sets it in CFLAGS if it works.
414 AC_DEFUN([ACX_CHECK_FLTO], [
415 AC_ARG_ENABLE([flto], AS_HELP_STRING([--disable-flto], [Disable link-time optimization (gcc specific option)]))
416 AS_IF([test "x$enable_flto" != "xno"], [
417 AC_MSG_CHECKING([if $CC supports -flto])
419 CFLAGS="$CFLAGS -flto"
420 AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
421 if $CC $CFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
427 rm -f conftest conftest.c conftest.o
428 ], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
432 dnl Check the printf-format attribute (if any)
433 dnl result in HAVE_ATTR_FORMAT.
434 dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE.
435 AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE],
436 [AC_REQUIRE([AC_PROG_CC])
437 AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute)
438 AC_CACHE_VAL(ac_cv_c_format_attribute,
439 [ac_cv_c_format_attribute=no
442 void f (char *format, ...) __attribute__ ((format (printf, 1, 2)));
443 void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2)));
447 [ac_cv_c_format_attribute="yes"],
448 [ac_cv_c_format_attribute="no"])
451 AC_MSG_RESULT($ac_cv_c_format_attribute)
452 if test $ac_cv_c_format_attribute = yes; then
453 AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute])
455 ])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE
457 dnl Setup ATTR_FORMAT config.h parts.
458 dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also.
459 AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE],
461 #ifdef HAVE_ATTR_FORMAT
462 # define ATTR_FORMAT(archetype, string_index, first_to_check) \
463 __attribute__ ((format (archetype, string_index, first_to_check)))
464 #else /* !HAVE_ATTR_FORMAT */
465 # define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */
466 #endif /* !HAVE_ATTR_FORMAT */
469 dnl Check how to mark function arguments as unused.
470 dnl result in HAVE_ATTR_UNUSED.
471 dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also.
472 AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE],
473 [AC_REQUIRE([AC_PROG_CC])
474 AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute)
475 AC_CACHE_VAL(ac_cv_c_unused_attribute,
476 [ac_cv_c_unused_attribute=no
479 void f (char *u __attribute__((unused)));
483 [ac_cv_c_unused_attribute="yes"],
484 [ac_cv_c_unused_attribute="no"])
487 dnl Setup ATTR_UNUSED config.h parts.
488 dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also.
489 AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE],
492 # define ATTR_UNUSED(x) x
493 #elif defined(__cplusplus)
494 # define ATTR_UNUSED(x)
495 #elif defined(HAVE_ATTR_UNUSED)
496 # define ATTR_UNUSED(x) x __attribute__((unused))
497 #else /* !HAVE_ATTR_UNUSED */
498 # define ATTR_UNUSED(x) x
499 #endif /* !HAVE_ATTR_UNUSED */
502 AC_MSG_RESULT($ac_cv_c_unused_attribute)
503 if test $ac_cv_c_unused_attribute = yes; then
504 AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute])
508 dnl Pre-fun for ACX_LIBTOOL_C_ONLY
509 AC_DEFUN([ACX_LIBTOOL_C_PRE], [
510 # skip these tests, we do not need them.
511 AC_DEFUN([AC_PROG_F77], [:])
512 AC_DEFUN([AC_PROG_FC], [:])
513 AC_DEFUN([AC_PROG_CXX], [:])
514 AC_DEFUN([AC_PROG_CXXCPP], [:])
515 AC_DEFUN([AC_PROG_OBJC], [:])
516 AC_DEFUN([AC_PROG_OBJCCPP], [:])
517 AC_DEFUN([AC_LIBTOOL_CXX], [:])
518 AC_DEFUN([AC_LIBTOOL_F77], [:])
519 # always use ./libtool unless override from commandline (libtool=mylibtool)
520 if test -z "$libtool"; then
524 # avoid libtool max commandline length test on systems that fork slowly.
526 if echo "$host_os" | grep "sunos4" >/dev/null; then
527 lt_cv_sys_max_cmd_len=32750;
529 AC_PATH_TOOL(AR, ar, [false])
530 if test $AR = false; then
531 AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it])
535 dnl Perform libtool check, portably, only for C
536 AC_DEFUN([ACX_LIBTOOL_C_ONLY], [
537 dnl as a requirement so that is gets called before LIBTOOL
538 dnl because libtools 'AC_REQUIRE' names are right after this one, before
539 dnl this function contents.
540 AC_REQUIRE([ACX_LIBTOOL_C_PRE])
544 dnl Detect if u_char type is defined, otherwise define it.
545 AC_DEFUN([ACX_TYPE_U_CHAR],
546 [AC_CHECK_TYPE([u_char], ,
547 [AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [
549 #ifdef HAVE_WINSOCK2_H
550 # include <winsock2.h>
554 dnl Detect if rlim_t type is defined, otherwise define it.
555 AC_DEFUN([ACX_TYPE_RLIM_T],
556 [AC_CHECK_TYPE(rlim_t, ,
557 [AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [
559 #ifdef HAVE_SYS_RESOURCE_H
560 # include <sys/resource.h>
564 dnl Detect if socklen_t type is defined, otherwise define it.
565 AC_DEFUN([ACX_TYPE_SOCKLEN_T],
567 AC_CHECK_TYPE(socklen_t, ,
568 [AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [
570 #ifdef HAVE_SYS_SOCKET_H
571 # include <sys/socket.h>
573 #ifdef HAVE_WS2TCPIP_H
574 # include <ws2tcpip.h>
578 dnl Detect if in_addr_t type is defined, otherwise define it.
579 AC_DEFUN([ACX_TYPE_IN_ADDR_T],
580 [ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [
582 #ifdef HAVE_SYS_TYPES_H
583 # include <sys/types.h>
585 #ifdef HAVE_NETINET_IN_H
586 # include <netinet/in.h>
590 dnl Detect if in_port_t type is defined, otherwise define it.
591 AC_DEFUN([ACX_TYPE_IN_PORT_T],
592 [ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [
594 #ifdef HAVE_SYS_TYPES_H
595 # include <sys/types.h>
597 #ifdef HAVE_NETINET_IN_H
598 # include <netinet/in.h>
602 dnl Add option to disable the evil rpath. Check whether to use rpath or not.
603 dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool.
604 AC_DEFUN([ACX_ARG_RPATH],
607 [ --disable-rpath disable hardcoded rpath (default=enabled)],
608 enable_rpath=$enableval, enable_rpath=yes)
609 if test "x$enable_rpath" = xno; then
610 dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.])
611 AC_CONFIG_COMMANDS([disable-rpath], [
612 sed < libtool > libtool-2 \
613 's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/'
621 dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is
622 dnl an absolute path.
623 dnl $1: the pathname to add.
624 AC_DEFUN([ACX_RUNTIME_PATH_ADD], [
625 if test "x$enable_rpath" = xyes; then
626 if echo "$1" | grep "^/" >/dev/null; then
627 RUNTIME_PATH="$RUNTIME_PATH -R$1"
632 dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL
633 dnl Takes one argument; the withval checked in those 2 functions
634 dnl sets up the environment for the given openssl path
635 AC_DEFUN([ACX_SSL_CHECKS], [
637 if test x_$withval != x_no; then
638 AC_MSG_CHECKING(for SSL)
639 if test x_$withval = x_ -o x_$withval = x_yes; then
640 withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr"
642 for dir in $withval; do
644 if test -f "$dir/include/openssl/ssl.h"; then
646 AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.])
647 dnl assume /usr/include is already in the include-path.
648 if test "$ssldir" != "/usr"; then
649 CPPFLAGS="$CPPFLAGS -I$ssldir/include"
650 LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir/include"
655 if test x_$found_ssl != x_yes; then
656 AC_MSG_ERROR(Cannot find the SSL libraries in $withval)
658 AC_MSG_RESULT(found in $ssldir)
660 dnl assume /usr is already in the lib and dynlib paths.
661 if test "$ssldir" != "/usr" -a "$ssldir" != ""; then
662 LDFLAGS="$LDFLAGS -L$ssldir/lib"
663 LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib"
664 ACX_RUNTIME_PATH_ADD([$ssldir/lib])
667 AC_MSG_CHECKING([for HMAC_CTX_init in -lcrypto])
668 LIBS="$LIBS -lcrypto"
669 LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto"
671 int HMAC_CTX_init(void);
672 (void)HMAC_CTX_init();
675 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1,
676 [If you have HMAC_CTX_init])
679 # check if -lwsock32 or -lgdi32 are needed.
681 BAKSSLLIBS="$LIBSSL_LIBS"
683 LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32"
684 AC_MSG_CHECKING([if -lcrypto needs -lgdi32])
686 int HMAC_CTX_init(void);
687 (void)HMAC_CTX_init();
689 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1,
690 [If you have HMAC_CTX_init])
695 LIBSSL_LIBS="$BAKSSLLIBS"
697 LIBSSL_LIBS="$LIBSSL_LIBS -ldl"
698 AC_MSG_CHECKING([if -lcrypto needs -ldl])
700 int HMAC_CTX_init(void);
701 (void)HMAC_CTX_init();
703 AC_DEFINE([HAVE_HMAC_CTX_INIT], 1,
704 [If you have HMAC_CTX_init])
708 AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required])
714 AC_SUBST(RUNTIME_PATH)
715 # openssl engine functionality needs dlopen().
717 AC_SEARCH_LIBS([dlopen], [dl])
718 if test "$LIBS" != "$BAKLIBS"; then
719 LIBSSL_LIBS="$LIBSSL_LIBS -ldl"
722 AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT])
723 AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT])
724 AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT])
725 ])dnl End of ACX_SSL_CHECKS
727 dnl Check for SSL, where SSL is mandatory
728 dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
729 dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
730 dnl Checks main header files of SSL.
732 AC_DEFUN([ACX_WITH_SSL],
734 AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
735 [enable SSL (will check /usr/local/ssl
736 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[
740 if test x_$withval = x_no; then
741 AC_MSG_ERROR([Need SSL library to do digital signature cryptography])
743 ACX_SSL_CHECKS($withval)
744 ])dnl End of ACX_WITH_SSL
746 dnl Check for SSL, where ssl is optional (--without-ssl is allowed)
747 dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
748 dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
749 dnl Checks main header files of SSL.
751 AC_DEFUN([ACX_WITH_SSL_OPTIONAL],
753 AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname],
754 [enable SSL (will check /usr/local/ssl
755 /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[
759 ACX_SSL_CHECKS($withval)
760 ])dnl End of ACX_WITH_SSL_OPTIONAL
762 dnl Setup to use -lssl
763 dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one).
764 AC_DEFUN([ACX_LIB_SSL],
766 # check if libssl needs libdl
769 AC_MSG_CHECKING([if libssl needs libdl])
770 AC_TRY_LINK_FUNC([SSL_CTX_new], [
776 AC_SEARCH_LIBS([dlopen], [dl])
777 ]) ])dnl End of ACX_LIB_SSL
779 dnl Setup to use very large files (>2Gb).
780 dnl setups fseeko and its own
781 AC_DEFUN([ACX_SYS_LARGEFILE],
784 dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko
785 ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1,
789 int a = fseeko(stdin, 0, 0);
792 ], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"])
795 dnl Check getaddrinfo.
796 dnl Works on linux, solaris, bsd and windows(links winsock).
797 dnl defines HAVE_GETADDRINFO, USE_WINSOCK.
798 AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES],
799 [AC_REQUIRE([AC_PROG_CC])
800 AC_MSG_CHECKING(for getaddrinfo)
801 ac_cv_func_getaddrinfo=no
809 char* (*f) () = getaddrinfo;
818 dnl this case on linux, solaris, bsd
819 [ac_cv_func_getaddrinfo="yes"
820 dnl see if on windows
821 if test "$ac_cv_header_windows_h" = "yes"; then
822 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
824 LIBS="$LIBS -lws2_32"
827 dnl no quick getaddrinfo, try mingw32 and winsock2 library.
829 LIBS="$LIBS -lws2_32"
833 #ifdef HAVE_WS2TCPIP_H
834 #include <ws2tcpip.h>
838 (void)getaddrinfo(NULL, NULL, NULL, NULL);
842 ac_cv_func_getaddrinfo="yes"
843 dnl already: LIBS="$LIBS -lws2_32"
844 AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
848 ac_cv_func_getaddrinfo="no"
853 AC_MSG_RESULT($ac_cv_func_getaddrinfo)
854 if test $ac_cv_func_getaddrinfo = yes; then
855 AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available])
857 ])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES
859 dnl check if a function is deprecated. defines DEPRECATED_func in config.h.
860 dnl $1: function name
861 dnl $2: C-statement that calls the function.
862 dnl $3: includes for the program.
863 dnl $4: executes if yes
864 dnl $5: executes if no
865 AC_DEFUN([ACX_FUNC_DEPRECATED],
867 AC_REQUIRE([AC_PROG_CC])
868 AC_MSG_CHECKING(if $1 is deprecated)
869 cache=`echo $1 | sed 'y%.=/+-%___p_%'`
870 AC_CACHE_VAL(cv_cc_deprecated_$cache,
872 echo '$3' >conftest.c
873 echo 'void f(){ $2 }' >>conftest.c
874 if test -z "`$CC -c conftest.c 2>&1 | grep deprecated`"; then
875 eval "cv_cc_deprecated_$cache=no"
877 eval "cv_cc_deprecated_$cache=yes"
879 rm -f conftest conftest.o conftest.c
881 if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then
883 AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated])
891 ])dnl end of ACX_FUNC_DEPRECATED
893 dnl check if select and nonblocking sockets actually work.
894 dnl Needs fork(2) and select(2).
895 dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from
896 dnl a nonblocking socket do not work, a new call to select is necessary.
897 AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN],
899 AC_MSG_CHECKING([if nonblocking sockets work])
900 if echo $target | grep mingw32 >/dev/null; then
901 AC_MSG_RESULT([no (windows)])
902 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
911 #ifdef HAVE_SYS_TYPES_H
912 #include <sys/types.h>
914 #ifdef HAVE_SYS_SOCKET_H
915 #include <sys/socket.h>
917 #ifdef HAVE_NETINET_IN_H
918 #include <netinet/in.h>
920 #ifdef HAVE_ARPA_INET_H
921 #include <arpa/inet.h>
936 struct sockaddr_in a;
937 /* test if select and nonblocking reads work well together */
939 fork child to send 10 messages.
941 then try to nonblocking read the 10 messages
942 then, nonblocking read must give EAGAIN
945 port = 12345 + (time(0)%32);
946 sfd = socket(PF_INET, SOCK_DGRAM, 0);
951 memset(&a, 0, sizeof(a));
952 a.sin_family = AF_INET;
953 a.sin_port = htons(port);
954 a.sin_addr.s_addr = inet_addr("127.0.0.1");
955 if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
959 if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) {
964 cfd = socket(PF_INET, SOCK_DGRAM, 0);
966 perror("client socket");
970 if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
971 perror("client bind");
974 a.sin_port = htons(port);
976 /* no handler, causes exit in 10 seconds */
979 /* send and receive on the socket */
980 if((p=fork()) == 0) {
981 for(i=0; i<num; i++) {
982 if(sendto(cfd, &i, sizeof(i), 0,
983 (struct sockaddr*)&a, sizeof(a)) < 0) {
998 if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) {
1004 if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) {
1012 /* now we want to get EAGAIN: nonblocking goodness */
1014 recv(sfd, &x, sizeof(x), 0);
1015 if(errno != EAGAIN) {
1016 perror("trying to recv again");
1019 /* EAGAIN encountered */
1027 AC_MSG_RESULT([yes])
1030 AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
1032 AC_MSG_RESULT([crosscompile(yes)])
1035 ])dnl End of ACX_CHECK_NONBLOCKING_BROKEN
1037 dnl Check if mkdir has one or two arguments.
1038 dnl defines MKDIR_HAS_ONE_ARG
1039 AC_DEFUN([ACX_MKDIR_ONE_ARG],
1041 AC_MSG_CHECKING([whether mkdir has one arg])
1045 #ifdef HAVE_WINSOCK2_H
1046 #include <winsock2.h>
1048 #ifdef HAVE_SYS_STAT_H
1049 #include <sys/stat.h>
1052 (void)mkdir("directory");
1055 AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.])
1059 ])dnl end of ACX_MKDIR_ONE_ARG
1061 dnl Check for ioctlsocket function. works on mingw32 too.
1062 AC_DEFUN([ACX_FUNC_IOCTLSOCKET],
1065 AC_MSG_CHECKING(for ioctlsocket)
1066 AC_LINK_IFELSE([AC_LANG_PROGRAM([
1067 #ifdef HAVE_WINSOCK2_H
1068 #include <winsock2.h>
1071 (void)ioctlsocket(0, 0, NULL);
1074 AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available])
1075 ],[AC_MSG_RESULT(no)])
1076 ])dnl end of ACX_FUNC_IOCTLSOCKET
1078 dnl detect malloc and provide malloc compat prototype.
1079 dnl $1: unique name for compat code
1080 AC_DEFUN([ACX_FUNC_MALLOC],
1082 AC_MSG_CHECKING([for GNU libc compatible malloc])
1083 AC_RUN_IFELSE([AC_LANG_PROGRAM(
1084 [[#if defined STDC_HEADERS || defined HAVE_STDLIB_H
1089 ]], [ if(malloc(0) != 0) return 1;])
1091 [AC_MSG_RESULT([no])
1093 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ,
1094 [AC_MSG_RESULT([yes])
1095 AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])],
1096 [AC_MSG_RESULT([no (crosscompile)])
1098 AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] )
1101 dnl Define fallback for fseeko and ftello if needed.
1102 AC_DEFUN([AHX_CONFIG_FSEEKO],
1105 #define fseeko fseek
1106 #define ftello ftell
1107 #endif /* HAVE_FSEEKO */
1110 dnl Define RAND_MAX if not defined
1111 AC_DEFUN([AHX_CONFIG_RAND_MAX],
1114 #define RAND_MAX 2147483647
1118 dnl Define MAXHOSTNAMELEN if not defined
1119 AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN],
1121 #ifndef MAXHOSTNAMELEN
1122 #define MAXHOSTNAMELEN 256
1126 dnl Define IPV6_MIN_MTU if not defined
1127 AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU],
1129 #ifndef IPV6_MIN_MTU
1130 #define IPV6_MIN_MTU 1280
1131 #endif /* IPV6_MIN_MTU */
1134 dnl provide snprintf, vsnprintf compat prototype
1135 dnl $1: unique name for compat code
1136 AC_DEFUN([AHX_CONFIG_SNPRINTF],
1138 #ifndef HAVE_SNPRINTF
1139 #define snprintf snprintf_$1
1140 #define vsnprintf vsnprintf_$1
1142 int snprintf (char *str, size_t count, const char *fmt, ...);
1143 int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);
1144 #endif /* HAVE_SNPRINTF */
1147 dnl provide inet_pton compat prototype.
1148 dnl $1: unique name for compat code
1149 AC_DEFUN([AHX_CONFIG_INET_PTON],
1151 #ifndef HAVE_INET_PTON
1152 #define inet_pton inet_pton_$1
1153 int inet_pton(int af, const char* src, void* dst);
1154 #endif /* HAVE_INET_PTON */
1157 dnl provide inet_ntop compat prototype.
1158 dnl $1: unique name for compat code
1159 AC_DEFUN([AHX_CONFIG_INET_NTOP],
1161 #ifndef HAVE_INET_NTOP
1162 #define inet_ntop inet_ntop_$1
1163 const char *inet_ntop(int af, const void *src, char *dst, size_t size);
1167 dnl provide inet_aton compat prototype.
1168 dnl $1: unique name for compat code
1169 AC_DEFUN([AHX_CONFIG_INET_ATON],
1171 #ifndef HAVE_INET_ATON
1172 #define inet_aton inet_aton_$1
1173 int inet_aton(const char *cp, struct in_addr *addr);
1177 dnl provide memmove compat prototype.
1178 dnl $1: unique name for compat code
1179 AC_DEFUN([AHX_CONFIG_MEMMOVE],
1181 #ifndef HAVE_MEMMOVE
1182 #define memmove memmove_$1
1183 void *memmove(void *dest, const void *src, size_t n);
1187 dnl provide strlcat compat prototype.
1188 dnl $1: unique name for compat code
1189 AC_DEFUN([AHX_CONFIG_STRLCAT],
1191 #ifndef HAVE_STRLCAT
1192 #define strlcat strlcat_$1
1193 size_t strlcat(char *dst, const char *src, size_t siz);
1197 dnl provide strlcpy compat prototype.
1198 dnl $1: unique name for compat code
1199 AC_DEFUN([AHX_CONFIG_STRLCPY],
1201 #ifndef HAVE_STRLCPY
1202 #define strlcpy strlcpy_$1
1203 size_t strlcpy(char *dst, const char *src, size_t siz);
1207 dnl provide gmtime_r compat prototype.
1208 dnl $1: unique name for compat code
1209 AC_DEFUN([AHX_CONFIG_GMTIME_R],
1211 #ifndef HAVE_GMTIME_R
1212 #define gmtime_r gmtime_r_$1
1213 struct tm *gmtime_r(const time_t *timep, struct tm *result);
1217 dnl provide reallocarray compat prototype.
1218 dnl $1: unique name for compat code
1219 AC_DEFUN([AHX_CONFIG_REALLOCARRAY],
1221 #ifndef HAVE_REALLOCARRAY
1222 #define reallocarray reallocarray$1
1223 void* reallocarray(void *ptr, size_t nmemb, size_t size);
1227 dnl provide w32 compat definition for sleep
1228 AC_DEFUN([AHX_CONFIG_W32_SLEEP],
1230 #if !defined(HAVE_SLEEP) || defined(HAVE_WINDOWS_H)
1231 #define sleep(x) Sleep((x)*1000) /* on win32 */
1232 #endif /* HAVE_SLEEP */
1235 dnl provide w32 compat definition for usleep
1236 AC_DEFUN([AHX_CONFIG_W32_USLEEP],
1239 #define usleep(x) Sleep((x)/1000 + 1) /* on win32 */
1240 #endif /* HAVE_USLEEP */
1243 dnl provide w32 compat definition for random
1244 AC_DEFUN([AHX_CONFIG_W32_RANDOM],
1247 #define random rand /* on win32, for tests only (bad random) */
1248 #endif /* HAVE_RANDOM */
1251 dnl provide w32 compat definition for srandom
1252 AC_DEFUN([AHX_CONFIG_W32_SRANDOM],
1254 #ifndef HAVE_SRANDOM
1255 #define srandom(x) srand(x) /* on win32, for tests only (bad random) */
1256 #endif /* HAVE_SRANDOM */
1259 dnl provide w32 compat definition for FD_SET_T
1260 AC_DEFUN([AHX_CONFIG_W32_FD_SET_T],
1262 /* detect if we need to cast to unsigned int for FD_SET to avoid warnings */
1263 #ifdef HAVE_WINSOCK2_H
1264 #define FD_SET_T (u_int)
1270 dnl Remove an extension flag from CFLAGS, define replacement to be made.
1271 dnl Used by ACX_STRIP_EXT_FLAGS.
1272 dnl $1: the name of the flag, for example -D_GNU_SOURCE.
1273 AC_DEFUN([ACX_CFLAGS_STRIP],
1275 if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then
1276 CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`"
1277 AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h)
1281 dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h
1282 dnl use with ACX_DETERMINE_EXT_FLAGS.
1283 AC_DEFUN([ACX_STRIP_EXT_FLAGS],
1285 AC_MSG_NOTICE([Stripping extension flags...])
1286 ACX_CFLAGS_STRIP(-D_GNU_SOURCE)
1287 ACX_CFLAGS_STRIP(-D_BSD_SOURCE)
1288 ACX_CFLAGS_STRIP(-D__EXTENSIONS__)
1289 ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112)
1290 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600)
1291 ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1)
1292 ACX_CFLAGS_STRIP(-D_ALL_SOURCE)
1293 ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1)
1294 ]) dnl End of ACX_STRIP_EXT_FLAGS
1296 dnl define one omitted flag for config.h
1297 dnl $1: flag name. -D_GNU_SOURCE
1298 dnl $2: replacement define. _GNU_SOURCE
1299 dnl $3: define value, 1
1300 AC_DEFUN([AHX_CONFIG_FLAG_OMITTED],
1301 [#if defined($1) && !defined($2)
1305 dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags
1306 dnl $1: the -DNAME or -DNAME=value string.
1307 AC_DEFUN([AHX_CONFIG_FLAG_EXT],
1308 [AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,)))
1311 dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS.
1312 AC_DEFUN([AHX_CONFIG_EXT_FLAGS],
1313 [AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE)
1314 AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE)
1315 AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__)
1316 AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112)
1317 AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600)
1318 AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1)
1319 AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE)
1320 AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1)
1323 dnl check if memcmp is using signed characters and replace if so.
1324 AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED],
1325 [AC_MSG_CHECKING([if memcmp compares unsigned])
1326 AC_RUN_IFELSE([AC_LANG_SOURCE([[
1332 char a = 255, b = 0;
1333 if(memcmp(&a, &b, 1) < 0)
1337 ]])], [AC_MSG_RESULT([yes]) ],
1338 [ AC_MSG_RESULT([no])
1339 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
1341 ], [ AC_MSG_RESULT([cross-compile no])
1342 AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
1346 dnl define memcmp to its replacement, pass unique id for program as arg
1347 AC_DEFUN([AHX_MEMCMP_BROKEN], [
1348 #ifdef MEMCMP_IS_BROKEN
1349 #include "compat/memcmp.h"
1350 #define memcmp memcmp_$1
1351 int memcmp(const void *x, const void *y, size_t n);
1355 dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
1356 AC_DEFUN([ACX_CHECK_SS_FAMILY],
1357 [AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [
1358 AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [
1359 AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage])
1360 ],, [AC_INCLUDES_DEFAULT
1361 #ifdef HAVE_NETINET_IN_H
1362 #include <netinet/in.h>
1364 #ifdef HAVE_SYS_SOCKET_H
1365 #include <sys/socket.h>
1370 #ifdef HAVE_ARPA_INET_H
1371 #include <arpa/inet.h>
1374 ], [AC_INCLUDES_DEFAULT
1375 #ifdef HAVE_NETINET_IN_H
1376 #include <netinet/in.h>
1378 #ifdef HAVE_SYS_SOCKET_H
1379 #include <sys/socket.h>
1384 #ifdef HAVE_ARPA_INET_H
1385 #include <arpa/inet.h>