diff options
Diffstat (limited to 'external/unbound/acx_nlnetlabs.m4')
| m--------- | external/unbound | 0 | ||||
| -rw-r--r-- | external/unbound/acx_nlnetlabs.m4 | 1451 |
2 files changed, 0 insertions, 1451 deletions
diff --git a/external/unbound b/external/unbound new file mode 160000 +Subproject 193bdc4ee3fe2b0d17e547e86512528c2614483 diff --git a/external/unbound/acx_nlnetlabs.m4 b/external/unbound/acx_nlnetlabs.m4 deleted file mode 100644 index a6c174f1c..000000000 --- a/external/unbound/acx_nlnetlabs.m4 +++ /dev/null @@ -1,1451 +0,0 @@ -# acx_nlnetlabs.m4 - common macros for configure checks -# Copyright 2009, Wouter Wijngaards, NLnet Labs. -# BSD licensed. -# -# Version 34 -# 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. 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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 "$ssldir" != ""; then - LDFLAGS="$LDFLAGS -L$ssldir/lib" - LIBSSL_LDFLAGS="$LIBSSL_LDFLAGS -L$ssldir/lib" - ACX_RUNTIME_PATH_ADD([$ssldir/lib]) - fi - - AC_MSG_CHECKING([for HMAC_Update in -lcrypto]) - LIBS="$LIBS -lcrypto" - LIBSSL_LIBS="$LIBSSL_LIBS -lcrypto" - AC_TRY_LINK(, [ - int HMAC_Update(void); - (void)HMAC_Update(); - ], [ - AC_MSG_RESULT(yes) - AC_DEFINE([HAVE_HMAC_UPDATE], 1, - [If you have HMAC_Update]) - ], [ - AC_MSG_RESULT(no) - # check if -lwsock32 or -lgdi32 are needed. - BAKLIBS="$LIBS" - BAKSSLLIBS="$LIBSSL_LIBS" - LIBS="$LIBS -lgdi32" - LIBSSL_LIBS="$LIBSSL_LIBS -lgdi32" - AC_MSG_CHECKING([if -lcrypto needs -lgdi32]) - AC_TRY_LINK([], [ - int HMAC_Update(void); - (void)HMAC_Update(); - ],[ - AC_DEFINE([HAVE_HMAC_UPDATE], 1, - [If you have HMAC_Update]) - 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_TRY_LINK([], [ - int HMAC_Update(void); - (void)HMAC_Update(); - ],[ - AC_DEFINE([HAVE_HMAC_UPDATE], 1, - [If you have HMAC_Update]) - 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_TRY_LINK([], [ - int HMAC_Update(void); - (void)HMAC_Update(); - ],[ - AC_DEFINE([HAVE_HMAC_UPDATE], 1, - [If you have HMAC_Update]) - AC_MSG_RESULT(yes) - ],[ - AC_MSG_RESULT(no) - AC_MSG_ERROR([OpenSSL found in $ssldir, but version 0.9.7 or higher is required]) - ]) - ]) - ]) - ]) - fi - AC_SUBST(HAVE_SSL) - AC_SUBST(RUNTIME_PATH) - fi -AC_CHECK_HEADERS([openssl/ssl.h],,, [AC_INCLUDES_DEFAULT]) -AC_CHECK_HEADERS([openssl/err.h],,, [AC_INCLUDES_DEFAULT]) -AC_CHECK_HEADERS([openssl/rand.h],,, [AC_INCLUDES_DEFAULT]) -])dnl End of ACX_SSL_CHECKS - -dnl Check for SSL, where SSL is mandatory -dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found -dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. -dnl Checks main header files of SSL. -dnl -AC_DEFUN([ACX_WITH_SSL], -[ -AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], - [enable SSL (will check /usr/local/ssl - /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ - ],[ - withval="yes" - ]) - if test x_$withval = x_no; then - AC_MSG_ERROR([Need SSL library to do digital signature cryptography]) - fi - ACX_SSL_CHECKS($withval) -])dnl End of ACX_WITH_SSL - -dnl Check for SSL, where ssl is optional (--without-ssl is allowed) -dnl Adds --with-ssl option, searches for openssl and defines HAVE_SSL if found -dnl Setup of CPPFLAGS, CFLAGS. Adds -lcrypto to LIBS. -dnl Checks main header files of SSL. -dnl -AC_DEFUN([ACX_WITH_SSL_OPTIONAL], -[ -AC_ARG_WITH(ssl, AC_HELP_STRING([--with-ssl=pathname], - [enable SSL (will check /usr/local/ssl - /usr/lib/ssl /usr/ssl /usr/pkg /usr/local /opt/local /usr/sfw /usr)]),[ - ],[ - withval="yes" - ]) - ACX_SSL_CHECKS($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 "$ac_cv_header_windows_h" = "yes"; then - AC_DEFINE(USE_WINSOCK, 1, [Whether the windows socket API is used]) - USE_WINSOCK="1" - LIBS="$LIBS -lws2_32" -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 -c conftest.c 2>&1 | grep deprecated`"; 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 $target | grep mingw32 >/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_TRY_COMPILE([ -#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 |