1460 lines
43 KiB
Plaintext
1460 lines
43 KiB
Plaintext
# acx_nlnetlabs.m4 - common macros for configure checks
|
|
# Copyright 2009, Wouter Wijngaards, NLnet Labs.
|
|
# BSD licensed.
|
|
#
|
|
# Version 41
|
|
# 2021-07-30 fix for openssl use of lib64 directory.
|
|
# 2021-06-14 fix nonblocking test to use host instead of target for mingw test.
|
|
# 2021-05-17 fix nonblocking socket test from grep on mingw32 to mingw for
|
|
# 64bit compatibility.
|
|
# 2021-03-24 fix ACX_FUNC_DEPRECATED to use CPPFLAGS and CFLAGS.
|
|
# 2021-01-05 fix defun for aclocal
|
|
# 2021-01-05 autoconf 2.70 autoupdate and fixes, no AC_TRY_COMPILE
|
|
# 2020-08-24 Use EVP_sha256 instead of HMAC_Update (for openssl-3.0.0).
|
|
# 2016-03-21 Check -ldl -pthread for libcrypto for ldns and openssl 1.1.0.
|
|
# 2016-03-21 Use HMAC_Update instead of HMAC_CTX_Init (for openssl-1.1.0).
|
|
# 2016-01-04 -D_DEFAULT_SOURCE defined with -D_BSD_SOURCE for Linux glibc 2.20
|
|
# 2015-12-11 FLTO check for new OSX, clang.
|
|
# 2015-11-18 spelling check fix.
|
|
# 2015-11-05 ACX_SSL_CHECKS no longer adds -ldl needlessly.
|
|
# 2015-08-28 ACX_CHECK_PIE and ACX_CHECK_RELRO_NOW added.
|
|
# 2015-03-17 AHX_CONFIG_REALLOCARRAY added
|
|
# 2013-09-19 FLTO help text improved.
|
|
# 2013-07-18 Enable ACX_CHECK_COMPILER_FLAG to test for -Wstrict-prototypes
|
|
# 2013-06-25 FLTO has --disable-flto option.
|
|
# 2013-05-03 Update W32_SLEEP for newer mingw that links but not defines it.
|
|
# 2013-03-22 Fix ACX_RSRC_VERSION for long version numbers.
|
|
# 2012-02-09 Fix AHX_MEMCMP_BROKEN with undef in compat/memcmp.h.
|
|
# 2012-01-20 Fix COMPILER_FLAGS_UNBOUND for gcc 4.6.2 assigned-not-used-warns.
|
|
# 2011-12-05 Fix getaddrinfowithincludes on windows with fedora16 mingw32-gcc.
|
|
# Fix ACX_MALLOC for redefined malloc error.
|
|
# Fix GETADDRINFO_WITH_INCLUDES to add -lws2_32
|
|
# 2011-11-10 Fix FLTO test to not drop a.out in current directory.
|
|
# 2011-11-01 Fix FLTO test for llvm on Lion.
|
|
# 2011-08-01 Fix nonblock test (broken at v13).
|
|
# 2011-08-01 Fix autoconf 2.68 warnings
|
|
# 2011-06-23 Add ACX_CHECK_FLTO to check -flto.
|
|
# 2010-08-16 Fix FLAG_OMITTED for AS_TR_CPP changes in autoconf-2.66.
|
|
# 2010-07-02 Add check for ss_family (for minix).
|
|
# 2010-04-26 Fix to use CPPFLAGS for CHECK_COMPILER_FLAGS.
|
|
# 2010-03-01 Fix RPATH using CONFIG_COMMANDS to run at the very end.
|
|
# 2010-02-18 WITH_SSL outputs the LIBSSL_LDFLAGS, LIBS, CPPFLAGS separate, -ldl
|
|
# 2010-02-01 added ACX_CHECK_MEMCMP_SIGNED, AHX_MEMCMP_BROKEN
|
|
# 2010-01-20 added AHX_COONFIG_STRLCAT
|
|
# 2009-07-14 U_CHAR detection improved for windows crosscompile.
|
|
# added ACX_FUNC_MALLOC
|
|
# fixup some #if to #ifdef
|
|
# NONBLOCKING test for mingw crosscompile.
|
|
# 2009-07-13 added ACX_WITH_SSL_OPTIONAL
|
|
# 2009-07-03 fixup LDFLAGS for empty ssl dir.
|
|
#
|
|
# Automates some of the checking constructs. Aims at portability for POSIX.
|
|
# Documentation for functions is below.
|
|
#
|
|
# the following macro's are provided in this file:
|
|
# (see below for details on each macro).
|
|
#
|
|
# ACX_ESCAPE_BACKSLASH - escape backslashes in var for C-preproc.
|
|
# ACX_RSRC_VERSION - create windows resource version number.
|
|
# ACX_CHECK_COMPILER_FLAG - see if cc supports a flag.
|
|
# ACX_CHECK_ERROR_FLAGS - see which flag is -werror (used below).
|
|
# ACX_CHECK_COMPILER_FLAG_NEEDED - see if flags make the code compile cleanly.
|
|
# ACX_DEPFLAG - find cc dependency flags.
|
|
# ACX_DETERMINE_EXT_FLAGS_UNBOUND - find out which flags enable BSD and POSIX.
|
|
# ACX_CHECK_FORMAT_ATTRIBUTE - find cc printf format syntax.
|
|
# ACX_CHECK_UNUSED_ATTRIBUTE - find cc variable unused syntax.
|
|
# ACX_CHECK_FLTO - see if cc supports -flto and use it if so.
|
|
# ACX_LIBTOOL_C_ONLY - create libtool for C only, improved.
|
|
# ACX_TYPE_U_CHAR - u_char type.
|
|
# ACX_TYPE_RLIM_T - rlim_t type.
|
|
# ACX_TYPE_SOCKLEN_T - socklen_t type.
|
|
# ACX_TYPE_IN_ADDR_T - in_addr_t type.
|
|
# ACX_TYPE_IN_PORT_T - in_port_t type.
|
|
# ACX_ARG_RPATH - add --disable-rpath option.
|
|
# ACX_WITH_SSL - add --with-ssl option, link -lcrypto.
|
|
# ACX_WITH_SSL_OPTIONAL - add --with-ssl option, link -lcrypto,
|
|
# where --without-ssl is also accepted
|
|
# ACX_LIB_SSL - setup to link -lssl.
|
|
# ACX_SYS_LARGEFILE - improved sys_largefile, fseeko, >2G files.
|
|
# ACX_CHECK_GETADDRINFO_WITH_INCLUDES - find getaddrinfo, portably.
|
|
# ACX_FUNC_DEPRECATED - see if func is deprecated.
|
|
# ACX_CHECK_NONBLOCKING_BROKEN - see if nonblocking sockets really work.
|
|
# ACX_MKDIR_ONE_ARG - determine mkdir(2) number of arguments.
|
|
# ACX_FUNC_IOCTLSOCKET - find ioctlsocket, portably.
|
|
# ACX_FUNC_MALLOC - check malloc, define replacement .
|
|
# AHX_CONFIG_FORMAT_ATTRIBUTE - config.h text for format.
|
|
# AHX_CONFIG_UNUSED_ATTRIBUTE - config.h text for unused.
|
|
# AHX_CONFIG_FSEEKO - define fseeko, ftello fallback.
|
|
# AHX_CONFIG_RAND_MAX - define RAND_MAX if needed.
|
|
# AHX_CONFIG_MAXHOSTNAMELEN - define MAXHOSTNAMELEN if needed.
|
|
# AHX_CONFIG_IPV6_MIN_MTU - define IPV6_MIN_MTU if needed.
|
|
# AHX_CONFIG_SNPRINTF - snprintf compat prototype
|
|
# AHX_CONFIG_INET_PTON - inet_pton compat prototype
|
|
# AHX_CONFIG_INET_NTOP - inet_ntop compat prototype
|
|
# AHX_CONFIG_INET_ATON - inet_aton compat prototype
|
|
# AHX_CONFIG_MEMMOVE - memmove compat prototype
|
|
# AHX_CONFIG_STRLCAT - strlcat compat prototype
|
|
# AHX_CONFIG_STRLCPY - strlcpy compat prototype
|
|
# AHX_CONFIG_GMTIME_R - gmtime_r compat prototype
|
|
# AHX_CONFIG_W32_SLEEP - w32 compat for sleep
|
|
# AHX_CONFIG_W32_USLEEP - w32 compat for usleep
|
|
# AHX_CONFIG_W32_RANDOM - w32 compat for random
|
|
# AHX_CONFIG_W32_SRANDOM - w32 compat for srandom
|
|
# AHX_CONFIG_W32_FD_SET_T - w32 detection of FD_SET_T.
|
|
# ACX_CFLAGS_STRIP - strip one flag from CFLAGS
|
|
# ACX_STRIP_EXT_FLAGS - strip extension flags from CFLAGS
|
|
# AHX_CONFIG_FLAG_OMITTED - define omitted flag
|
|
# AHX_CONFIG_FLAG_EXT - define omitted extension flag
|
|
# AHX_CONFIG_EXT_FLAGS - define the stripped extension flags
|
|
# ACX_CHECK_MEMCMP_SIGNED - check if memcmp uses signed characters.
|
|
# AHX_MEMCMP_BROKEN - replace memcmp func for CHECK_MEMCMP_SIGNED.
|
|
# ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
|
|
# ACX_CHECK_PIE - add --enable-pie option and check if works
|
|
# ACX_CHECK_RELRO_NOW - add --enable-relro-now option and check it
|
|
#
|
|
|
|
dnl Escape backslashes as \\, for C:\ paths, for the C preprocessor defines.
|
|
dnl for example, ACX_ESCAPE_BACKSLASH($from_var, to_var)
|
|
dnl $1: the text to change.
|
|
dnl $2: the result.
|
|
AC_DEFUN([ACX_ESCAPE_BACKSLASH], [$2="`echo $1 | sed -e 's/\\\\/\\\\\\\\/g'`"
|
|
])
|
|
|
|
dnl Calculate comma separated windows-resource numbers from package version.
|
|
dnl Picks the first three(,0) or four numbers out of the name.
|
|
dnl $1: variable for the result
|
|
AC_DEFUN([ACX_RSRC_VERSION],
|
|
[$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/' `]
|
|
])
|
|
|
|
dnl Routine to help check for compiler flags.
|
|
dnl Checks if the compiler will accept the flag.
|
|
dnl $1: the flag without a - in front, so g to check -g.
|
|
dnl $2: executed if yes
|
|
dnl $3: executed if no
|
|
AC_DEFUN([ACX_CHECK_COMPILER_FLAG],
|
|
[
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_MSG_CHECKING(whether $CC supports -$1)
|
|
cache=`echo $1 | sed 'y%.=/+-%___p_%'`
|
|
AC_CACHE_VAL(cv_prog_cc_flag_$cache,
|
|
[
|
|
echo 'void f(void){}' >conftest.c
|
|
if test -z "`$CC $CPPFLAGS $CFLAGS -$1 -c conftest.c 2>&1`"; then
|
|
eval "cv_prog_cc_flag_$cache=yes"
|
|
else
|
|
eval "cv_prog_cc_flag_$cache=no"
|
|
fi
|
|
rm -f conftest conftest.o conftest.c
|
|
])
|
|
if eval "test \"`echo '$cv_prog_cc_flag_'$cache`\" = yes"; then
|
|
AC_MSG_RESULT(yes)
|
|
:
|
|
$2
|
|
else
|
|
AC_MSG_RESULT(no)
|
|
:
|
|
$3
|
|
fi
|
|
])
|
|
|
|
dnl setup flags for ACX_CHECK_COMPILER_FLAG_NEEDED
|
|
dnl ERRFLAG: result, compiler flag to turn warnings into errors
|
|
AC_DEFUN([ACX_CHECK_ERROR_FLAGS],
|
|
[
|
|
ACX_CHECK_COMPILER_FLAG(Werror, [ERRFLAG="-Werror"], [ERRFLAG="-errwarn"])
|
|
ACX_CHECK_COMPILER_FLAG(Wall, [ERRFLAG="$ERRFLAG -Wall"],
|
|
[ERRFLAG="$ERRFLAG -errfmt"])
|
|
])
|
|
|
|
dnl Routine to help check for needed compiler flags.
|
|
dnl $1: flags for CC
|
|
dnl $2: the includes and code
|
|
dnl $3: if the given code only compiles with the flag, execute argument 3
|
|
dnl $4: if the given code compiles without the flag, execute argument 4
|
|
dnl $5: with and without flag the compile fails, execute argument 5.
|
|
AC_DEFUN([ACX_CHECK_COMPILER_FLAG_NEEDED],
|
|
[
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_REQUIRE([ACX_CHECK_ERROR_FLAGS])
|
|
AC_MSG_CHECKING(whether we need $1 as a flag for $CC)
|
|
cache=AS_TR_SH($1)
|
|
dnl cache=`echo $1 | sed 'y%.=/+- %___p__%'`
|
|
AC_CACHE_VAL(cv_prog_cc_flag_needed_$cache,
|
|
[
|
|
echo '$2' > conftest.c
|
|
echo 'void f(){}' >>conftest.c
|
|
if test -z "`$CC $CPPFLAGS $CFLAGS $ERRFLAG -c conftest.c 2>&1`"; then
|
|
eval "cv_prog_cc_flag_needed_$cache=no"
|
|
else
|
|
[
|
|
if test -z "`$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`"; then
|
|
eval "cv_prog_cc_flag_needed_$cache=yes"
|
|
else
|
|
eval "cv_prog_cc_flag_needed_$cache=fail"
|
|
#echo 'Test with flag fails too!'
|
|
#cat conftest.c
|
|
#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
|
|
#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
|
|
#exit 1
|
|
fi
|
|
]
|
|
fi
|
|
rm -f conftest conftest.c conftest.o
|
|
])
|
|
if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = yes"; then
|
|
AC_MSG_RESULT(yes)
|
|
:
|
|
$3
|
|
else
|
|
if eval "test \"`echo '$cv_prog_cc_flag_needed_'$cache`\" = no"; then
|
|
AC_MSG_RESULT(no)
|
|
#echo 'Test with flag is no!'
|
|
#cat conftest.c
|
|
#echo "$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1"
|
|
#echo `$CC $CPPFLAGS $CFLAGS $1 $ERRFLAG -c conftest.c 2>&1`
|
|
#exit 1
|
|
:
|
|
$4
|
|
else
|
|
AC_MSG_RESULT(failed)
|
|
:
|
|
$5
|
|
fi
|
|
fi
|
|
])
|
|
|
|
dnl Check for CC dependency flag
|
|
dnl DEPFLAG: set to flag that generates dependencies.
|
|
AC_DEFUN([ACX_DEPFLAG],
|
|
[
|
|
AC_MSG_CHECKING([$CC dependency flag])
|
|
echo 'void f(){}' >conftest.c
|
|
if test "`$CC -MM conftest.c 2>&1`" = "conftest.o: conftest.c"; then
|
|
DEPFLAG="-MM"
|
|
else
|
|
if test "`$CC -xM1 conftest.c 2>&1`" = "conftest.o: conftest.c"; then
|
|
DEPFLAG="-xM1"
|
|
else
|
|
DEPFLAG="-MM" # dunno do something
|
|
fi
|
|
fi
|
|
AC_MSG_RESULT($DEPFLAG)
|
|
rm -f conftest.c
|
|
AC_SUBST(DEPFLAG)
|
|
])
|
|
|
|
dnl Determine flags that gives POSIX and BSD functionality.
|
|
dnl CFLAGS is modified for the result.
|
|
AC_DEFUN([ACX_DETERMINE_EXT_FLAGS_UNBOUND],
|
|
[
|
|
ACX_CHECK_COMPILER_FLAG(std=c99, [C99FLAG="-std=c99"])
|
|
ACX_CHECK_COMPILER_FLAG(xc99, [C99FLAG="-xc99"])
|
|
|
|
AC_CHECK_HEADERS([getopt.h time.h],,, [AC_INCLUDES_DEFAULT])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED($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,
|
|
[
|
|
#include "confdefs.h"
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <sys/time.h>
|
|
#ifdef HAVE_TIME_H
|
|
#include <time.h>
|
|
#endif
|
|
#include <unistd.h>
|
|
#include <netdb.h>
|
|
#ifdef HAVE_GETOPT_H
|
|
#include <getopt.h>
|
|
#endif
|
|
|
|
int test() {
|
|
int a;
|
|
char **opts = NULL;
|
|
struct timeval tv;
|
|
char *t;
|
|
time_t time = 0;
|
|
char *buf = NULL;
|
|
const char* str = NULL;
|
|
struct msghdr msg;
|
|
msg.msg_control = 0;
|
|
t = ctime_r(&time, buf);
|
|
tv.tv_usec = 10;
|
|
srandom(32);
|
|
a = getopt(2, opts, "a");
|
|
a = isascii(32);
|
|
str = gai_strerror(0);
|
|
if(str && t && tv.tv_usec && msg.msg_control)
|
|
a = 0;
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_XOPEN_SOURCE_EXTENDED=1 -D_ALL_SOURCE"])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE,
|
|
[
|
|
#include "confdefs.h"
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <sys/time.h>
|
|
#ifdef HAVE_TIME_H
|
|
#include <time.h>
|
|
#endif
|
|
#include <unistd.h>
|
|
#include <netdb.h>
|
|
#ifdef HAVE_GETOPT_H
|
|
#include <getopt.h>
|
|
#endif
|
|
|
|
int test() {
|
|
int a;
|
|
char **opts = NULL;
|
|
struct timeval tv;
|
|
char *t;
|
|
time_t time = 0;
|
|
char *buf = NULL;
|
|
const char* str = NULL;
|
|
struct msghdr msg;
|
|
msg.msg_control = 0;
|
|
t = ctime_r(&time, buf);
|
|
tv.tv_usec = 10;
|
|
srandom(32);
|
|
a = getopt(2, opts, "a");
|
|
a = isascii(32);
|
|
str = gai_strerror(0);
|
|
if(str && t && tv.tv_usec && msg.msg_control)
|
|
a = 0;
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS $C99FLAG -D__EXTENSIONS__ -D_BSD_SOURCE -D_DEFAULT_SOURCE -D_POSIX_C_SOURCE=200112 -D_XOPEN_SOURCE=600 -D_ALL_SOURCE"])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED($C99FLAG,
|
|
[
|
|
#include <stdbool.h>
|
|
#include <ctype.h>
|
|
int test() {
|
|
int a = 0;
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS $C99FLAG"])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_BSD_SOURCE -D_DEFAULT_SOURCE,
|
|
[
|
|
#include <ctype.h>
|
|
|
|
int test() {
|
|
int a;
|
|
a = isascii(32);
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS -D_BSD_SOURCE -D_DEFAULT_SOURCE"])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE,
|
|
[
|
|
#include <netinet/in.h>
|
|
|
|
int test() {
|
|
struct in6_pktinfo inf;
|
|
int a = (int)sizeof(inf);
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
|
|
|
|
# check again for GNU_SOURCE for setresgid. May fail if setresgid
|
|
# is not available at all. -D_FRSRESGID is to make this check unique.
|
|
# otherwise we would get the previous cached result.
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_GNU_SOURCE -D_FRSRESGID,
|
|
[
|
|
#include <unistd.h>
|
|
|
|
int test() {
|
|
int a = setresgid(0,0,0);
|
|
a = setresuid(0,0,0);
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS -D_GNU_SOURCE"])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_POSIX_C_SOURCE=200112,
|
|
[
|
|
#include "confdefs.h"
|
|
#ifdef HAVE_TIME_H
|
|
#include <time.h>
|
|
#endif
|
|
#include <netdb.h>
|
|
|
|
int test() {
|
|
int a = 0;
|
|
char *t;
|
|
time_t time = 0;
|
|
char *buf = NULL;
|
|
const char* str = NULL;
|
|
t = ctime_r(&time, buf);
|
|
str = gai_strerror(0);
|
|
if(t && str)
|
|
a = 0;
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS -D_POSIX_C_SOURCE=200112"])
|
|
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED(-D__EXTENSIONS__,
|
|
[
|
|
#include "confdefs.h"
|
|
#include <stdlib.h>
|
|
#include <ctype.h>
|
|
#include <sys/time.h>
|
|
#ifdef HAVE_TIME_H
|
|
#include <time.h>
|
|
#endif
|
|
#include <unistd.h>
|
|
#ifdef HAVE_GETOPT_H
|
|
#include <getopt.h>
|
|
#endif
|
|
|
|
int test() {
|
|
int a;
|
|
char **opts = NULL;
|
|
struct timeval tv;
|
|
tv.tv_usec = 10;
|
|
srandom(32);
|
|
a = getopt(2, opts, "a");
|
|
a = isascii(32);
|
|
if(tv.tv_usec)
|
|
a = 0;
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS -D__EXTENSIONS__"])
|
|
|
|
])dnl End of ACX_DETERMINE_EXT_FLAGS_UNBOUND
|
|
|
|
dnl Check if CC supports -flto.
|
|
dnl in a way that supports clang and suncc (that flag does something else,
|
|
dnl but fails to link). It sets it in CFLAGS if it works.
|
|
AC_DEFUN([ACX_CHECK_FLTO], [
|
|
AC_ARG_ENABLE([flto], AS_HELP_STRING([--disable-flto], [Disable link-time optimization (gcc specific option)]))
|
|
AS_IF([test "x$enable_flto" != "xno"], [
|
|
AC_MSG_CHECKING([if $CC supports -flto])
|
|
BAKCFLAGS="$CFLAGS"
|
|
CFLAGS="$CFLAGS -flto"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
|
|
if $CC $CFLAGS -o conftest conftest.c 2>&1 | $GREP -e "warning: no debug symbols in executable" -e "warning: object" >/dev/null; then
|
|
CFLAGS="$BAKCFLAGS"
|
|
AC_MSG_RESULT(no)
|
|
else
|
|
AC_MSG_RESULT(yes)
|
|
fi
|
|
rm -f conftest conftest.c conftest.o
|
|
], [CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
|
|
])
|
|
])
|
|
|
|
dnl Check the printf-format attribute (if any)
|
|
dnl result in HAVE_ATTR_FORMAT.
|
|
dnl Make sure you also include the AHX_CONFIG_FORMAT_ATTRIBUTE.
|
|
AC_DEFUN([ACX_CHECK_FORMAT_ATTRIBUTE],
|
|
[AC_REQUIRE([AC_PROG_CC])
|
|
AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "format" attribute)
|
|
AC_CACHE_VAL(ac_cv_c_format_attribute,
|
|
[ac_cv_c_format_attribute=no
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
|
|
void f (char *format, ...) __attribute__ ((format (printf, 1, 2)));
|
|
void (*pf) (char *format, ...) __attribute__ ((format (printf, 1, 2)));
|
|
]], [[
|
|
f ("%s", "str");
|
|
]])],[ac_cv_c_format_attribute="yes"],[ac_cv_c_format_attribute="no"])
|
|
])
|
|
|
|
AC_MSG_RESULT($ac_cv_c_format_attribute)
|
|
if test $ac_cv_c_format_attribute = yes; then
|
|
AC_DEFINE(HAVE_ATTR_FORMAT, 1, [Whether the C compiler accepts the "format" attribute])
|
|
fi
|
|
])dnl End of ACX_CHECK_FORMAT_ATTRIBUTE
|
|
|
|
dnl Setup ATTR_FORMAT config.h parts.
|
|
dnl make sure you call ACX_CHECK_FORMAT_ATTRIBUTE also.
|
|
AC_DEFUN([AHX_CONFIG_FORMAT_ATTRIBUTE],
|
|
[
|
|
#ifdef HAVE_ATTR_FORMAT
|
|
# define ATTR_FORMAT(archetype, string_index, first_to_check) \
|
|
__attribute__ ((format (archetype, string_index, first_to_check)))
|
|
#else /* !HAVE_ATTR_FORMAT */
|
|
# define ATTR_FORMAT(archetype, string_index, first_to_check) /* empty */
|
|
#endif /* !HAVE_ATTR_FORMAT */
|
|
])
|
|
|
|
dnl Check how to mark function arguments as unused.
|
|
dnl result in HAVE_ATTR_UNUSED.
|
|
dnl Make sure you include AHX_CONFIG_UNUSED_ATTRIBUTE also.
|
|
AC_DEFUN([ACX_CHECK_UNUSED_ATTRIBUTE],
|
|
[AC_REQUIRE([AC_PROG_CC])
|
|
AC_MSG_CHECKING(whether the C compiler (${CC-cc}) accepts the "unused" attribute)
|
|
AC_CACHE_VAL(ac_cv_c_unused_attribute,
|
|
[ac_cv_c_unused_attribute=no
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[#include <stdio.h>
|
|
void f (char *u __attribute__((unused)));
|
|
]], [[
|
|
f ("x");
|
|
]])],[ac_cv_c_unused_attribute="yes"],[ac_cv_c_unused_attribute="no"])
|
|
])
|
|
|
|
dnl Setup ATTR_UNUSED config.h parts.
|
|
dnl make sure you call ACX_CHECK_UNUSED_ATTRIBUTE also.
|
|
AC_DEFUN([AHX_CONFIG_UNUSED_ATTRIBUTE],
|
|
[
|
|
#if defined(DOXYGEN)
|
|
# define ATTR_UNUSED(x) x
|
|
#elif defined(__cplusplus)
|
|
# define ATTR_UNUSED(x)
|
|
#elif defined(HAVE_ATTR_UNUSED)
|
|
# define ATTR_UNUSED(x) x __attribute__((unused))
|
|
#else /* !HAVE_ATTR_UNUSED */
|
|
# define ATTR_UNUSED(x) x
|
|
#endif /* !HAVE_ATTR_UNUSED */
|
|
])
|
|
|
|
AC_MSG_RESULT($ac_cv_c_unused_attribute)
|
|
if test $ac_cv_c_unused_attribute = yes; then
|
|
AC_DEFINE(HAVE_ATTR_UNUSED, 1, [Whether the C compiler accepts the "unused" attribute])
|
|
fi
|
|
])dnl
|
|
|
|
dnl Pre-fun for ACX_LIBTOOL_C_ONLY
|
|
AC_DEFUN([ACX_LIBTOOL_C_PRE], [
|
|
# skip these tests, we do not need them.
|
|
AC_DEFUN([AC_PROG_F77], [:])
|
|
AC_DEFUN([AC_PROG_FC], [:])
|
|
AC_DEFUN([AC_PROG_CXX], [:])
|
|
AC_DEFUN([AC_PROG_CXXCPP], [:])
|
|
AC_DEFUN([AC_PROG_OBJC], [:])
|
|
AC_DEFUN([AC_PROG_OBJCCPP], [:])
|
|
AC_DEFUN([AC_LIBTOOL_CXX], [:])
|
|
AC_DEFUN([AC_LIBTOOL_F77], [:])
|
|
# always use ./libtool unless override from commandline (libtool=mylibtool)
|
|
if test -z "$libtool"; then
|
|
libtool="./libtool"
|
|
fi
|
|
AC_SUBST(libtool)
|
|
# avoid libtool max commandline length test on systems that fork slowly.
|
|
AC_CANONICAL_HOST
|
|
if echo "$host_os" | grep "sunos4" >/dev/null; then
|
|
lt_cv_sys_max_cmd_len=32750;
|
|
fi
|
|
AC_PATH_TOOL(AR, ar, [false])
|
|
if test $AR = false; then
|
|
AC_MSG_ERROR([Cannot find 'ar', please extend PATH to include it])
|
|
fi
|
|
])
|
|
|
|
dnl Perform libtool check, portably, only for C
|
|
AC_DEFUN([ACX_LIBTOOL_C_ONLY], [
|
|
dnl as a requirement so that is gets called before LIBTOOL
|
|
dnl because libtools 'AC_REQUIRE' names are right after this one, before
|
|
dnl this function contents.
|
|
AC_REQUIRE([ACX_LIBTOOL_C_PRE])
|
|
LT_INIT
|
|
])
|
|
|
|
dnl Detect if u_char type is defined, otherwise define it.
|
|
AC_DEFUN([ACX_TYPE_U_CHAR],
|
|
[AC_CHECK_TYPE([u_char], ,
|
|
[AC_DEFINE([u_char], [unsigned char], [Define to 'unsigned char if not defined])], [
|
|
AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_WINSOCK2_H
|
|
# include <winsock2.h>
|
|
#endif
|
|
]) ])
|
|
|
|
dnl Detect if rlim_t type is defined, otherwise define it.
|
|
AC_DEFUN([ACX_TYPE_RLIM_T],
|
|
[AC_CHECK_TYPE(rlim_t, ,
|
|
[AC_DEFINE([rlim_t], [unsigned long], [Define to 'int' if not defined])], [
|
|
AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_SYS_RESOURCE_H
|
|
# include <sys/resource.h>
|
|
#endif
|
|
]) ])
|
|
|
|
dnl Detect if socklen_t type is defined, otherwise define it.
|
|
AC_DEFUN([ACX_TYPE_SOCKLEN_T],
|
|
[
|
|
AC_CHECK_TYPE(socklen_t, ,
|
|
[AC_DEFINE([socklen_t], [int], [Define to 'int' if not defined])], [
|
|
AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
# include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_WS2TCPIP_H
|
|
# include <ws2tcpip.h>
|
|
#endif
|
|
]) ])
|
|
|
|
dnl Detect if in_addr_t type is defined, otherwise define it.
|
|
AC_DEFUN([ACX_TYPE_IN_ADDR_T],
|
|
[ AC_CHECK_TYPE(in_addr_t, [], [AC_DEFINE([in_addr_t], [uint32_t], [in_addr_t])], [
|
|
AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
# include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
# include <netinet/in.h>
|
|
#endif
|
|
]) ])
|
|
|
|
dnl Detect if in_port_t type is defined, otherwise define it.
|
|
AC_DEFUN([ACX_TYPE_IN_PORT_T],
|
|
[ AC_CHECK_TYPE(in_port_t, [], [AC_DEFINE([in_port_t], [uint16_t], [in_port_t])], [
|
|
AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
# include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
# include <netinet/in.h>
|
|
#endif
|
|
]) ])
|
|
|
|
dnl Add option to disable the evil rpath. Check whether to use rpath or not.
|
|
dnl Adds the --disable-rpath option. Uses trick to edit the ./libtool.
|
|
AC_DEFUN([ACX_ARG_RPATH],
|
|
[
|
|
AC_ARG_ENABLE(rpath,
|
|
[ --disable-rpath disable hardcoded rpath (default=enabled)],
|
|
enable_rpath=$enableval, enable_rpath=yes)
|
|
if test "x$enable_rpath" = xno; then
|
|
dnl AC_MSG_RESULT([Fixing libtool for -rpath problems.])
|
|
AC_CONFIG_COMMANDS([disable-rpath], [
|
|
sed < libtool > libtool-2 \
|
|
's/^hardcode_libdir_flag_spec.*$'/'hardcode_libdir_flag_spec=" -D__LIBTOOL_RPATH_SED__ "/'
|
|
mv libtool-2 libtool
|
|
chmod 755 libtool
|
|
libtool="./libtool"
|
|
])
|
|
fi
|
|
])
|
|
|
|
dnl Add a -R to the RUNTIME_PATH. Only if rpath is enabled and it is
|
|
dnl an absolute path.
|
|
dnl $1: the pathname to add.
|
|
AC_DEFUN([ACX_RUNTIME_PATH_ADD], [
|
|
if test "x$enable_rpath" = xyes; then
|
|
if echo "$1" | grep "^/" >/dev/null; then
|
|
RUNTIME_PATH="$RUNTIME_PATH -R$1"
|
|
fi
|
|
fi
|
|
])
|
|
|
|
dnl Common code for both ACX_WITH_SSL and ACX_WITH_SSL_OPTIONAL
|
|
dnl Takes one argument; the withval checked in those 2 functions
|
|
dnl sets up the environment for the given openssl path
|
|
AC_DEFUN([ACX_SSL_CHECKS], [
|
|
withval=$1
|
|
if test x_$withval != x_no; then
|
|
AC_MSG_CHECKING(for SSL)
|
|
if test x_$withval = x_ -o x_$withval = x_yes; then
|
|
withval="/usr/local/ssl /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr"
|
|
fi
|
|
for dir in $withval; do
|
|
ssldir="$dir"
|
|
if test -f "$dir/include/openssl/ssl.h"; then
|
|
found_ssl="yes"
|
|
AC_DEFINE_UNQUOTED([HAVE_SSL], [], [Define if you have the SSL libraries installed.])
|
|
dnl assume /usr/include is already in the include-path.
|
|
if test "$ssldir" != "/usr"; then
|
|
CPPFLAGS="$CPPFLAGS -I$ssldir/include"
|
|
LIBSSL_CPPFLAGS="$LIBSSL_CPPFLAGS -I$ssldir/include"
|
|
fi
|
|
break;
|
|
fi
|
|
done
|
|
if test x_$found_ssl != x_yes; then
|
|
AC_MSG_ERROR(Cannot find the SSL libraries in $withval)
|
|
else
|
|
AC_MSG_RESULT(found in $ssldir)
|
|
HAVE_SSL=yes
|
|
dnl assume /usr is already in the lib and dynlib paths.
|
|
if test "$ssldir" != "/usr" -a "$ssldir" != ""; then
|
|
if test ! -d "$ssldir/lib" -a -d "$ssldir/lib64"; then
|
|
LDFLAGS="$LDFLAGS -L$ssldir/lib64"
|
|
LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib64"
|
|
ACX_RUNTIME_PATH_ADD([$ssldir/lib64])
|
|
else
|
|
LDFLAGS="$LDFLAGS -L$ssldir/lib"
|
|
LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib"
|
|
ACX_RUNTIME_PATH_ADD([$ssldir/lib])
|
|
fi
|
|
fi
|
|
|
|
AC_MSG_CHECKING([for EVP_sha256 in -lcrypto])
|
|
LIBS="$LIBS -lcrypto"
|
|
LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
|
|
int EVP_sha256(void);
|
|
(void)EVP_sha256();
|
|
]])],[
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE([HAVE_EVP_SHA256], 1,
|
|
[If you have EVP_sha256])
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
# check if -lwsock32 or -lgdi32 are needed.
|
|
BAKLIBS="$LIBS"
|
|
BAKSSLLIBS="$LIBSSL_LIBS"
|
|
LIBS="$LIBS -lgdi32 -lws2_32"
|
|
LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32 -lws2_32"
|
|
AC_MSG_CHECKING([if -lcrypto needs -lgdi32])
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
|
|
int EVP_sha256(void);
|
|
(void)EVP_sha256();
|
|
]])],[
|
|
AC_DEFINE([HAVE_EVP_SHA256], 1,
|
|
[If you have EVP_sha256])
|
|
AC_MSG_RESULT(yes)
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
LIBS="$BAKLIBS"
|
|
LIBSSL_LIBS="$BAKSSLLIBS"
|
|
LIBS="$LIBS -ldl"
|
|
LIBSSL_LIBS="$LIBSSL_LIBS -ldl"
|
|
AC_MSG_CHECKING([if -lcrypto needs -ldl])
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
|
|
int EVP_sha256(void);
|
|
(void)EVP_sha256();
|
|
]])],[
|
|
AC_DEFINE([HAVE_EVP_SHA256], 1,
|
|
[If you have EVP_sha256])
|
|
AC_MSG_RESULT(yes)
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
LIBS="$BAKLIBS"
|
|
LIBSSL_LIBS="$BAKSSLLIBS"
|
|
LIBS="$LIBS -ldl -pthread"
|
|
LIBSSL_LIBS="$LIBSSL_LIBS -ldl -pthread"
|
|
AC_MSG_CHECKING([if -lcrypto needs -ldl -pthread])
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([[]], [[
|
|
int EVP_sha256(void);
|
|
(void)EVP_sha256();
|
|
]])],[
|
|
AC_DEFINE([HAVE_EVP_SHA256], 1,
|
|
[If you have EVP_sha256])
|
|
AC_MSG_RESULT(yes)
|
|
],[
|
|
AC_MSG_RESULT(no)
|
|
AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required])
|
|
])
|
|
])
|
|
])
|
|
])
|
|
fi
|
|
AC_SUBST(HAVE_SSL)
|
|
AC_SUBST(RUNTIME_PATH)
|
|
fi
|
|
AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT])
|
|
AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT])
|
|
AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT])
|
|
])dnl End of ACX_SSL_CHECKS
|
|
|
|
dnl Check for SSL, where SSL is mandatory
|
|
dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
|
|
dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
|
|
dnl Checks main header files of SSL.
|
|
dnl
|
|
AC_DEFUN([ACX_WITH_SSL],
|
|
[
|
|
AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl=pathname],[enable SSL (will check /usr/local/ssl
|
|
/usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[
|
|
],[
|
|
withval="yes"
|
|
])
|
|
if test x_$withval = x_no; then
|
|
AC_MSG_ERROR([Need SSL library to do digital signature cryptography])
|
|
fi
|
|
ACX_SSL_CHECKS($withval)
|
|
])dnl End of ACX_WITH_SSL
|
|
|
|
dnl Check for SSL, where ssl is optional (--without-ssl is allowed)
|
|
dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found
|
|
dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS.
|
|
dnl Checks main header files of SSL.
|
|
dnl
|
|
AC_DEFUN([ACX_WITH_SSL_OPTIONAL],
|
|
[
|
|
AC_ARG_WITH(ssl, AS_HELP_STRING([--with-ssl=pathname],[enable SSL (will check /usr/local/ssl
|
|
/usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[
|
|
],[
|
|
withval="yes"
|
|
])
|
|
ACX_SSL_CHECKS($withval)
|
|
])dnl End of ACX_WITH_SSL_OPTIONAL
|
|
|
|
dnl Setup to use -lssl
|
|
dnl To use -lcrypto, use the ACX_WITH_SSL setup (before this one).
|
|
AC_DEFUN([ACX_LIB_SSL],
|
|
[
|
|
# check if libssl needs libdl
|
|
BAKLIBS="$LIBS"
|
|
LIBS="-lssl $LIBS"
|
|
AC_MSG_CHECKING([if libssl needs libdl])
|
|
AC_TRY_LINK_FUNC([SSL_CTX_new], [
|
|
AC_MSG_RESULT([no])
|
|
LIBS="$BAKLIBS"
|
|
] , [
|
|
AC_MSG_RESULT([yes])
|
|
LIBS="$BAKLIBS"
|
|
AC_SEARCH_LIBS([dlopen], [dl])
|
|
]) ])dnl End of ACX_LIB_SSL
|
|
|
|
dnl Setup to use very large files (>2Gb).
|
|
dnl setups fseeko and its own
|
|
AC_DEFUN([ACX_SYS_LARGEFILE],
|
|
[
|
|
AC_SYS_LARGEFILE
|
|
dnl try to see if an additional _LARGEFILE_SOURCE 1 is needed to get fseeko
|
|
ACX_CHECK_COMPILER_FLAG_NEEDED(-D_LARGEFILE_SOURCE=1,
|
|
[
|
|
#include <stdio.h>
|
|
int test() {
|
|
int a = fseeko(stdin, 0, 0);
|
|
return a;
|
|
}
|
|
], [CFLAGS="$CFLAGS -D_LARGEFILE_SOURCE=1"])
|
|
])
|
|
|
|
dnl Check getaddrinfo.
|
|
dnl Works on linux, solaris, bsd and windows(links winsock).
|
|
dnl defines HAVE_GETADDRINFO, USE_WINSOCK.
|
|
AC_DEFUN([ACX_CHECK_GETADDRINFO_WITH_INCLUDES],
|
|
[AC_REQUIRE([AC_PROG_CC])
|
|
AC_MSG_CHECKING(for getaddrinfo)
|
|
ac_cv_func_getaddrinfo=no
|
|
AC_LINK_IFELSE(
|
|
[AC_LANG_SOURCE([[
|
|
#ifdef __cplusplus
|
|
extern "C"
|
|
{
|
|
#endif
|
|
char* getaddrinfo();
|
|
char* (*f) () = getaddrinfo;
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
int main() {
|
|
;
|
|
return 0;
|
|
}
|
|
]])],
|
|
dnl this case on linux, solaris, bsd
|
|
[ac_cv_func_getaddrinfo="yes"
|
|
dnl see if on windows
|
|
if test "$ac_cv_header_windows_h" = "yes"; then
|
|
AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
|
|
USE_WINSOCK="1"
|
|
if echo $LIBS | grep 'lws2_32' >/dev/null; then
|
|
:
|
|
else
|
|
LIBS="$LIBS -lws2_32"
|
|
fi
|
|
fi
|
|
],
|
|
dnl no quick getaddrinfo, try mingw32 and winsock2 library.
|
|
ORIGLIBS="$LIBS"
|
|
LIBS="$LIBS -lws2_32"
|
|
AC_LINK_IFELSE(
|
|
[AC_LANG_PROGRAM(
|
|
[
|
|
#ifdef HAVE_WS2TCPIP_H
|
|
#include <ws2tcpip.h>
|
|
#endif
|
|
],
|
|
[
|
|
(void)getaddrinfo(NULL, NULL, NULL, NULL);
|
|
]
|
|
)],
|
|
[
|
|
ac_cv_func_getaddrinfo="yes"
|
|
dnl already: LIBS="$LIBS -lws2_32"
|
|
AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used])
|
|
USE_WINSOCK="1"
|
|
],
|
|
[
|
|
ac_cv_func_getaddrinfo="no"
|
|
LIBS="$ORIGLIBS"
|
|
])
|
|
)
|
|
|
|
AC_MSG_RESULT($ac_cv_func_getaddrinfo)
|
|
if test $ac_cv_func_getaddrinfo = yes; then
|
|
AC_DEFINE(HAVE_GETADDRINFO, 1, [Whether getaddrinfo is available])
|
|
fi
|
|
])dnl Endof AC_CHECK_GETADDRINFO_WITH_INCLUDES
|
|
|
|
dnl check if a function is deprecated. defines DEPRECATED_func in config.h.
|
|
dnl $1: function name
|
|
dnl $2: C-statement that calls the function.
|
|
dnl $3: includes for the program.
|
|
dnl $4: executes if yes
|
|
dnl $5: executes if no
|
|
AC_DEFUN([ACX_FUNC_DEPRECATED],
|
|
[
|
|
AC_REQUIRE([AC_PROG_CC])
|
|
AC_MSG_CHECKING(if $1 is deprecated)
|
|
cache=`echo $1 | sed 'y%.=/+-%___p_%'`
|
|
AC_CACHE_VAL(cv_cc_deprecated_$cache,
|
|
[
|
|
echo '$3' >conftest.c
|
|
echo 'void f(){ $2 }' >>conftest.c
|
|
if test -z "`$CC $CPPFLAGS $CFLAGS -c conftest.c 2>&1 | grep -e deprecated -e unavailable`"; then
|
|
eval "cv_cc_deprecated_$cache=no"
|
|
else
|
|
eval "cv_cc_deprecated_$cache=yes"
|
|
fi
|
|
rm -f conftest conftest.o conftest.c
|
|
])
|
|
if eval "test \"`echo '$cv_cc_deprecated_'$cache`\" = yes"; then
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE_UNQUOTED(AS_TR_CPP([DEPRECATED_$1]), 1, [Whether $1 is deprecated])
|
|
:
|
|
$4
|
|
else
|
|
AC_MSG_RESULT(no)
|
|
:
|
|
$5
|
|
fi
|
|
])dnl end of ACX_FUNC_DEPRECATED
|
|
|
|
dnl check if select and nonblocking sockets actually work.
|
|
dnl Needs fork(2) and select(2).
|
|
dnl defines NONBLOCKING_IS_BROKEN, and if that is true multiple reads from
|
|
dnl a nonblocking socket do not work, a new call to select is necessary.
|
|
AC_DEFUN([ACX_CHECK_NONBLOCKING_BROKEN],
|
|
[
|
|
AC_MSG_CHECKING([if nonblocking sockets work])
|
|
if echo $host | grep mingw >/dev/null; then
|
|
AC_MSG_RESULT([no (windows)])
|
|
AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
|
|
else
|
|
AC_RUN_IFELSE([
|
|
AC_LANG_SOURCE([[
|
|
#include <stdio.h>
|
|
#include <string.h>
|
|
#include <stdlib.h>
|
|
#include <fcntl.h>
|
|
#include <errno.h>
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
#include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_TIME_H
|
|
#include <time.h>
|
|
#endif
|
|
|
|
int main(void)
|
|
{
|
|
int port;
|
|
int sfd, cfd;
|
|
int num = 10;
|
|
int i, p;
|
|
struct sockaddr_in a;
|
|
/* test if select and nonblocking reads work well together */
|
|
/* open port.
|
|
fork child to send 10 messages.
|
|
select to read.
|
|
then try to nonblocking read the 10 messages
|
|
then, nonblocking read must give EAGAIN
|
|
*/
|
|
|
|
port = 12345 + (time(0)%32);
|
|
sfd = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if(sfd == -1) {
|
|
perror("socket");
|
|
return 1;
|
|
}
|
|
memset(&a, 0, sizeof(a));
|
|
a.sin_family = AF_INET;
|
|
a.sin_port = htons(port);
|
|
a.sin_addr.s_addr = inet_addr("127.0.0.1");
|
|
if(bind(sfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
|
|
perror("bind");
|
|
return 1;
|
|
}
|
|
if(fcntl(sfd, F_SETFL, O_NONBLOCK) == -1) {
|
|
perror("fcntl");
|
|
return 1;
|
|
}
|
|
|
|
cfd = socket(PF_INET, SOCK_DGRAM, 0);
|
|
if(cfd == -1) {
|
|
perror("client socket");
|
|
return 1;
|
|
}
|
|
a.sin_port = 0;
|
|
if(bind(cfd, (struct sockaddr*)&a, sizeof(a)) < 0) {
|
|
perror("client bind");
|
|
return 1;
|
|
}
|
|
a.sin_port = htons(port);
|
|
|
|
/* no handler, causes exit in 10 seconds */
|
|
alarm(10);
|
|
|
|
/* send and receive on the socket */
|
|
if((p=fork()) == 0) {
|
|
for(i=0; i<num; i++) {
|
|
if(sendto(cfd, &i, sizeof(i), 0,
|
|
(struct sockaddr*)&a, sizeof(a)) < 0) {
|
|
perror("sendto");
|
|
return 1;
|
|
}
|
|
}
|
|
} else {
|
|
/* parent */
|
|
fd_set rset;
|
|
int x;
|
|
if(p == -1) {
|
|
perror("fork");
|
|
return 1;
|
|
}
|
|
FD_ZERO(&rset);
|
|
FD_SET(sfd, &rset);
|
|
if(select(sfd+1, &rset, NULL, NULL, NULL) < 1) {
|
|
perror("select");
|
|
return 1;
|
|
}
|
|
i = 0;
|
|
while(i < num) {
|
|
if(recv(sfd, &x, sizeof(x), 0) != sizeof(x)) {
|
|
if(errno == EAGAIN)
|
|
continue;
|
|
perror("recv");
|
|
return 1;
|
|
}
|
|
i++;
|
|
}
|
|
/* now we want to get EAGAIN: nonblocking goodness */
|
|
errno = 0;
|
|
recv(sfd, &x, sizeof(x), 0);
|
|
if(errno != EAGAIN) {
|
|
perror("trying to recv again");
|
|
return 1;
|
|
}
|
|
/* EAGAIN encountered */
|
|
}
|
|
|
|
close(sfd);
|
|
close(cfd);
|
|
return 0;
|
|
}
|
|
]])], [
|
|
AC_MSG_RESULT([yes])
|
|
], [
|
|
AC_MSG_RESULT([no])
|
|
AC_DEFINE([NONBLOCKING_IS_BROKEN], 1, [Define if the network stack does not fully support nonblocking io (causes lower performance).])
|
|
], [
|
|
AC_MSG_RESULT([crosscompile(yes)])
|
|
])
|
|
fi
|
|
])dnl End of ACX_CHECK_NONBLOCKING_BROKEN
|
|
|
|
dnl Check if mkdir has one or two arguments.
|
|
dnl defines MKDIR_HAS_ONE_ARG
|
|
AC_DEFUN([ACX_MKDIR_ONE_ARG],
|
|
[
|
|
AC_MSG_CHECKING([whether mkdir has one arg])
|
|
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
|
|
#include <stdio.h>
|
|
#include <unistd.h>
|
|
#ifdef HAVE_WINSOCK2_H
|
|
#include <winsock2.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_STAT_H
|
|
#include <sys/stat.h>
|
|
#endif
|
|
]], [[
|
|
(void)mkdir("directory");
|
|
]])],[AC_MSG_RESULT(yes)
|
|
AC_DEFINE(MKDIR_HAS_ONE_ARG, 1, [Define if mkdir has one argument.])
|
|
],[AC_MSG_RESULT(no)
|
|
])
|
|
])dnl end of ACX_MKDIR_ONE_ARG
|
|
|
|
dnl Check for ioctlsocket function. works on mingw32 too.
|
|
AC_DEFUN([ACX_FUNC_IOCTLSOCKET],
|
|
[
|
|
# check ioctlsocket
|
|
AC_MSG_CHECKING(for ioctlsocket)
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([
|
|
#ifdef HAVE_WINSOCK2_H
|
|
#include <winsock2.h>
|
|
#endif
|
|
], [
|
|
(void)ioctlsocket(0, 0, NULL);
|
|
])], [
|
|
AC_MSG_RESULT(yes)
|
|
AC_DEFINE(HAVE_IOCTLSOCKET, 1, [if the function 'ioctlsocket' is available])
|
|
],[AC_MSG_RESULT(no)])
|
|
])dnl end of ACX_FUNC_IOCTLSOCKET
|
|
|
|
dnl detect malloc and provide malloc compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([ACX_FUNC_MALLOC],
|
|
[
|
|
AC_MSG_CHECKING([for GNU libc compatible malloc])
|
|
AC_RUN_IFELSE([AC_LANG_PROGRAM(
|
|
[[#if defined STDC_HEADERS || defined HAVE_STDLIB_H
|
|
#include <stdlib.h>
|
|
#else
|
|
char *malloc ();
|
|
#endif
|
|
]], [ if(malloc(0) != 0) return 1;])
|
|
],
|
|
[AC_MSG_RESULT([no])
|
|
AC_LIBOBJ(malloc)
|
|
AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] ,
|
|
[AC_MSG_RESULT([yes])
|
|
AC_DEFINE([HAVE_MALLOC], 1, [If have GNU libc compatible malloc])],
|
|
[AC_MSG_RESULT([no (crosscompile)])
|
|
AC_LIBOBJ(malloc)
|
|
AC_DEFINE_UNQUOTED([malloc], [rpl_malloc_$1], [Define if replacement function should be used.])] )
|
|
])
|
|
|
|
dnl Define fallback for fseeko and ftello if needed.
|
|
AC_DEFUN([AHX_CONFIG_FSEEKO],
|
|
[
|
|
#ifndef HAVE_FSEEKO
|
|
#define fseeko fseek
|
|
#define ftello ftell
|
|
#endif /* HAVE_FSEEKO */
|
|
])
|
|
|
|
dnl Define RAND_MAX if not defined
|
|
AC_DEFUN([AHX_CONFIG_RAND_MAX],
|
|
[
|
|
#ifndef RAND_MAX
|
|
#define RAND_MAX 2147483647
|
|
#endif
|
|
])
|
|
|
|
dnl Define MAXHOSTNAMELEN if not defined
|
|
AC_DEFUN([AHX_CONFIG_MAXHOSTNAMELEN],
|
|
[
|
|
#ifndef MAXHOSTNAMELEN
|
|
#define MAXHOSTNAMELEN 256
|
|
#endif
|
|
])
|
|
|
|
dnl Define IPV6_MIN_MTU if not defined
|
|
AC_DEFUN([AHX_CONFIG_IPV6_MIN_MTU],
|
|
[
|
|
#ifndef IPV6_MIN_MTU
|
|
#define IPV6_MIN_MTU 1280
|
|
#endif /* IPV6_MIN_MTU */
|
|
])
|
|
|
|
dnl provide snprintf, vsnprintf compat prototype
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_SNPRINTF],
|
|
[
|
|
#ifndef HAVE_SNPRINTF
|
|
#define snprintf snprintf_$1
|
|
#define vsnprintf vsnprintf_$1
|
|
#include <stdarg.h>
|
|
int snprintf (char *str, size_t count, const char *fmt, ...);
|
|
int vsnprintf (char *str, size_t count, const char *fmt, va_list arg);
|
|
#endif /* HAVE_SNPRINTF */
|
|
])
|
|
|
|
dnl provide inet_pton compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_INET_PTON],
|
|
[
|
|
#ifndef HAVE_INET_PTON
|
|
#define inet_pton inet_pton_$1
|
|
int inet_pton(int af, const char* src, void* dst);
|
|
#endif /* HAVE_INET_PTON */
|
|
])
|
|
|
|
dnl provide inet_ntop compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_INET_NTOP],
|
|
[
|
|
#ifndef HAVE_INET_NTOP
|
|
#define inet_ntop inet_ntop_$1
|
|
const char *inet_ntop(int af, const void *src, char *dst, size_t size);
|
|
#endif
|
|
])
|
|
|
|
dnl provide inet_aton compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_INET_ATON],
|
|
[
|
|
#ifndef HAVE_INET_ATON
|
|
#define inet_aton inet_aton_$1
|
|
int inet_aton(const char *cp, struct in_addr *addr);
|
|
#endif
|
|
])
|
|
|
|
dnl provide memmove compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_MEMMOVE],
|
|
[
|
|
#ifndef HAVE_MEMMOVE
|
|
#define memmove memmove_$1
|
|
void *memmove(void *dest, const void *src, size_t n);
|
|
#endif
|
|
])
|
|
|
|
dnl provide strlcat compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_STRLCAT],
|
|
[
|
|
#ifndef HAVE_STRLCAT
|
|
#define strlcat strlcat_$1
|
|
size_t strlcat(char *dst, const char *src, size_t siz);
|
|
#endif
|
|
])
|
|
|
|
dnl provide strlcpy compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_STRLCPY],
|
|
[
|
|
#ifndef HAVE_STRLCPY
|
|
#define strlcpy strlcpy_$1
|
|
size_t strlcpy(char *dst, const char *src, size_t siz);
|
|
#endif
|
|
])
|
|
|
|
dnl provide gmtime_r compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_GMTIME_R],
|
|
[
|
|
#ifndef HAVE_GMTIME_R
|
|
#define gmtime_r gmtime_r_$1
|
|
struct tm *gmtime_r(const time_t *timep, struct tm *result);
|
|
#endif
|
|
])
|
|
|
|
dnl provide reallocarray compat prototype.
|
|
dnl $1: unique name for compat code
|
|
AC_DEFUN([AHX_CONFIG_REALLOCARRAY],
|
|
[
|
|
#ifndef HAVE_REALLOCARRAY
|
|
#define reallocarray reallocarray$1
|
|
void* reallocarray(void *ptr, size_t nmemb, size_t size);
|
|
#endif
|
|
])
|
|
|
|
dnl provide w32 compat definition for sleep
|
|
AC_DEFUN([AHX_CONFIG_W32_SLEEP],
|
|
[
|
|
#if !defined(HAVE_SLEEP) || defined(HAVE_WINDOWS_H)
|
|
#define sleep(x) Sleep((x)*1000) /* on win32 */
|
|
#endif /* HAVE_SLEEP */
|
|
])
|
|
|
|
dnl provide w32 compat definition for usleep
|
|
AC_DEFUN([AHX_CONFIG_W32_USLEEP],
|
|
[
|
|
#ifndef HAVE_USLEEP
|
|
#define usleep(x) Sleep((x)/1000 + 1) /* on win32 */
|
|
#endif /* HAVE_USLEEP */
|
|
])
|
|
|
|
dnl provide w32 compat definition for random
|
|
AC_DEFUN([AHX_CONFIG_W32_RANDOM],
|
|
[
|
|
#ifndef HAVE_RANDOM
|
|
#define random rand /* on win32, for tests only (bad random) */
|
|
#endif /* HAVE_RANDOM */
|
|
])
|
|
|
|
dnl provide w32 compat definition for srandom
|
|
AC_DEFUN([AHX_CONFIG_W32_SRANDOM],
|
|
[
|
|
#ifndef HAVE_SRANDOM
|
|
#define srandom(x) srand(x) /* on win32, for tests only (bad random) */
|
|
#endif /* HAVE_SRANDOM */
|
|
])
|
|
|
|
dnl provide w32 compat definition for FD_SET_T
|
|
AC_DEFUN([AHX_CONFIG_W32_FD_SET_T],
|
|
[
|
|
/* detect if we need to cast to unsigned int for FD_SET to avoid warnings */
|
|
#ifdef HAVE_WINSOCK2_H
|
|
#define FD_SET_T (u_int)
|
|
#else
|
|
#define FD_SET_T
|
|
#endif
|
|
])
|
|
|
|
dnl Remove an extension flag from CFLAGS, define replacement to be made.
|
|
dnl Used by ACX_STRIP_EXT_FLAGS.
|
|
dnl $1: the name of the flag, for example -D_GNU_SOURCE.
|
|
AC_DEFUN([ACX_CFLAGS_STRIP],
|
|
[
|
|
if echo $CFLAGS | grep " $1" >/dev/null 2>&1; then
|
|
CFLAGS="`echo $CFLAGS | sed -e 's/ $1//g'`"
|
|
AC_DEFINE(m4_bpatsubst(OMITTED_$1,[[-=]],_), 1, Put $1 define in config.h)
|
|
fi
|
|
])
|
|
|
|
dnl Remove EXT flags from the CFLAGS and set them to be defined in config.h
|
|
dnl use with ACX_DETERMINE_EXT_FLAGS.
|
|
AC_DEFUN([ACX_STRIP_EXT_FLAGS],
|
|
[
|
|
AC_MSG_NOTICE([Stripping extension flags...])
|
|
ACX_CFLAGS_STRIP(-D_GNU_SOURCE)
|
|
ACX_CFLAGS_STRIP(-D_BSD_SOURCE)
|
|
ACX_CFLAGS_STRIP(-D_DEFAULT_SOURCE)
|
|
ACX_CFLAGS_STRIP(-D__EXTENSIONS__)
|
|
ACX_CFLAGS_STRIP(-D_POSIX_C_SOURCE=200112)
|
|
ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE=600)
|
|
ACX_CFLAGS_STRIP(-D_XOPEN_SOURCE_EXTENDED=1)
|
|
ACX_CFLAGS_STRIP(-D_ALL_SOURCE)
|
|
ACX_CFLAGS_STRIP(-D_LARGEFILE_SOURCE=1)
|
|
]) dnl End of ACX_STRIP_EXT_FLAGS
|
|
|
|
dnl define one omitted flag for config.h
|
|
dnl $1: flag name. -D_GNU_SOURCE
|
|
dnl $2: replacement define. _GNU_SOURCE
|
|
dnl $3: define value, 1
|
|
AC_DEFUN([AHX_CONFIG_FLAG_OMITTED],
|
|
[#if defined($1) && !defined($2)
|
|
#define $2 $3
|
|
[#]endif ])
|
|
|
|
dnl Wrapper for AHX_CONFIG_FLAG_OMITTED for -D style flags
|
|
dnl $1: the -DNAME or -DNAME=value string.
|
|
AC_DEFUN([AHX_CONFIG_FLAG_EXT],
|
|
[AHX_CONFIG_FLAG_OMITTED(m4_bpatsubst(OMITTED_$1,[[-=]],_),m4_bpatsubst(m4_bpatsubst($1,-D,),=.*$,),m4_if(m4_bregexp($1,=),-1,1,m4_bpatsubst($1,^.*=,)))
|
|
])
|
|
|
|
dnl config.h part to define omitted cflags, use with ACX_STRIP_EXT_FLAGS.
|
|
AC_DEFUN([AHX_CONFIG_EXT_FLAGS],
|
|
[AHX_CONFIG_FLAG_EXT(-D_GNU_SOURCE)
|
|
AHX_CONFIG_FLAG_EXT(-D_BSD_SOURCE)
|
|
AHX_CONFIG_FLAG_EXT(-D_DEFAULT_SOURCE)
|
|
AHX_CONFIG_FLAG_EXT(-D__EXTENSIONS__)
|
|
AHX_CONFIG_FLAG_EXT(-D_POSIX_C_SOURCE=200112)
|
|
AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE=600)
|
|
AHX_CONFIG_FLAG_EXT(-D_XOPEN_SOURCE_EXTENDED=1)
|
|
AHX_CONFIG_FLAG_EXT(-D_ALL_SOURCE)
|
|
AHX_CONFIG_FLAG_EXT(-D_LARGEFILE_SOURCE=1)
|
|
])
|
|
|
|
dnl check if memcmp is using signed characters and replace if so.
|
|
AC_DEFUN([ACX_CHECK_MEMCMP_SIGNED],
|
|
[AC_MSG_CHECKING([if memcmp compares unsigned])
|
|
AC_RUN_IFELSE([AC_LANG_SOURCE([[
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
int main(void)
|
|
{
|
|
char a = 255, b = 0;
|
|
if(memcmp(&a, &b, 1) < 0)
|
|
return 1;
|
|
return 0;
|
|
}
|
|
]])], [AC_MSG_RESULT([yes]) ],
|
|
[ AC_MSG_RESULT([no])
|
|
AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
|
|
AC_LIBOBJ([memcmp])
|
|
], [ AC_MSG_RESULT([cross-compile no])
|
|
AC_DEFINE([MEMCMP_IS_BROKEN], [1], [Define if memcmp() does not compare unsigned bytes])
|
|
AC_LIBOBJ([memcmp])
|
|
]) ])
|
|
|
|
dnl define memcmp to its replacement, pass unique id for program as arg
|
|
AC_DEFUN([AHX_MEMCMP_BROKEN], [
|
|
#ifdef MEMCMP_IS_BROKEN
|
|
#include "compat/memcmp.h"
|
|
#define memcmp memcmp_$1
|
|
int memcmp(const void *x, const void *y, size_t n);
|
|
#endif
|
|
])
|
|
|
|
dnl ACX_CHECK_SS_FAMILY - check for sockaddr_storage.ss_family
|
|
AC_DEFUN([ACX_CHECK_SS_FAMILY],
|
|
[AC_CHECK_MEMBER([struct sockaddr_storage.ss_family], [], [
|
|
AC_CHECK_MEMBER([struct sockaddr_storage.__ss_family], [
|
|
AC_DEFINE([ss_family], [__ss_family], [Fallback member name for socket family in struct sockaddr_storage])
|
|
],, [AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
])
|
|
], [AC_INCLUDES_DEFAULT
|
|
#ifdef HAVE_NETINET_IN_H
|
|
#include <netinet/in.h>
|
|
#endif
|
|
#ifdef HAVE_SYS_SOCKET_H
|
|
#include <sys/socket.h>
|
|
#endif
|
|
#ifdef HAVE_NETDB_H
|
|
#include <netdb.h>
|
|
#endif
|
|
#ifdef HAVE_ARPA_INET_H
|
|
#include <arpa/inet.h>
|
|
#endif
|
|
]) ])
|
|
|
|
dnl Check if CC and linker support -fPIE and -pie.
|
|
dnl If so, sets them in CFLAGS / LDFLAGS.
|
|
AC_DEFUN([ACX_CHECK_PIE], [
|
|
AC_ARG_ENABLE([pie], AS_HELP_STRING([--enable-pie], [Enable Position-Independent Executable (eg. to fully benefit from ASLR, small performance penalty)]))
|
|
AS_IF([test "x$enable_pie" = "xyes"], [
|
|
AC_MSG_CHECKING([if $CC supports PIE])
|
|
BAKLDFLAGS="$LDFLAGS"
|
|
BAKCFLAGS="$CFLAGS"
|
|
LDFLAGS="$LDFLAGS -pie"
|
|
CFLAGS="$CFLAGS -fPIE"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
|
|
if $CC $CFLAGS $LDFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
|
|
LDFLAGS="$BAKLDFLAGS"
|
|
AC_MSG_RESULT(no)
|
|
else
|
|
AC_MSG_RESULT(yes)
|
|
fi
|
|
rm -f conftest conftest.c conftest.o
|
|
], [LDFLAGS="$BAKLDFLAGS" ; CFLAGS="$BAKCFLAGS" ; AC_MSG_RESULT(no)])
|
|
])
|
|
])
|
|
|
|
dnl Check if linker supports -Wl,-z,relro,-z,now.
|
|
dnl If so, adds it to LDFLAGS.
|
|
AC_DEFUN([ACX_CHECK_RELRO_NOW], [
|
|
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)]))
|
|
AS_IF([test "x$enable_relro_now" = "xyes"], [
|
|
AC_MSG_CHECKING([if $CC supports -Wl,-z,relro,-z,now])
|
|
BAKLDFLAGS="$LDFLAGS"
|
|
LDFLAGS="$LDFLAGS -Wl,-z,relro,-z,now"
|
|
AC_LINK_IFELSE([AC_LANG_PROGRAM([], [])], [
|
|
if $CC $CFLAGS $LDFLAGS -o conftest conftest.c 2>&1 | grep "warning: no debug symbols in executable" >/dev/null; then
|
|
LDFLAGS="$BAKLDFLAGS"
|
|
AC_MSG_RESULT(no)
|
|
else
|
|
AC_MSG_RESULT(yes)
|
|
fi
|
|
rm -f conftest conftest.c conftest.o
|
|
], [LDFLAGS="$BAKLDFLAGS" ; AC_MSG_RESULT(no)])
|
|
])
|
|
])
|
|
|
|
dnl End of file
|