252 lines
6.4 KiB
Plaintext
252 lines
6.4 KiB
Plaintext
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# $Id: acinclude.m4 23020 2006-09-01 18:20:19Z androsyn $ - aclocal.m4 - Autoconf fun...
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AC_DEFUN([AC_DEFINE_DIR], [
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test "x$prefix" = xNONE && prefix="$ac_default_prefix"
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test "x$exec_prefix" = xNONE && exec_prefix='${prefix}'
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ac_define_dir=`eval echo [$]$2`
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ac_define_dir=`eval echo [$]ac_define_dir`
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$1="$ac_define_dir"
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AC_SUBST($1)
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ifelse($3, ,
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AC_DEFINE_UNQUOTED($1, "$ac_define_dir"),
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AC_DEFINE_UNQUOTED($1, "$ac_define_dir", $3))
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])
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AC_DEFUN([AC_SUBST_DIR], [
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ifelse($2,,,$1="[$]$2")
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$1=`(
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test "x$prefix" = xNONE && prefix="$ac_default_prefix"
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test "x$exec_prefix" = xNONE && exec_prefix="${prefix}"
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eval echo \""[$]$1"\"
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)`
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AC_SUBST($1)
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])
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dnl IPv6 support macros..pretty much swiped from wget
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dnl RB_PROTO_INET6
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AC_DEFUN([RB_PROTO_INET6],[
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AC_CACHE_CHECK([for INET6 protocol support], [rb_cv_proto_inet6],[
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AC_TRY_CPP([
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#include <sys/types.h>
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#include <sys/socket.h>
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#ifndef PF_INET6
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#error Missing PF_INET6
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#endif
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#ifndef AF_INET6
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#error Mlssing AF_INET6
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#endif
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],[
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rb_cv_proto_inet6=yes
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],[
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rb_cv_proto_inet6=no
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])
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])
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if test "X$rb_cv_proto_inet6" = "Xyes"; then :
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$1
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else :
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$2
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fi
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])
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AC_DEFUN([RB_TYPE_STRUCT_SOCKADDR_IN6],[
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rb_have_sockaddr_in6=
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AC_CHECK_TYPES([struct sockaddr_in6],[
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rb_have_sockaddr_in6=yes
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],[
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rb_have_sockaddr_in6=no
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],[
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#include <sys/types.h>
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#include <sys/socket.h>
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#include <netinet/in.h>
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])
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if test "X$rb_have_sockaddr_in6" = "Xyes"; then :
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$1
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else :
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$2
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fi
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])
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AC_DEFUN([RB_CHECK_TIMER_CREATE],
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[AC_CACHE_CHECK([for a working timer_create(CLOCK_REALTIME)],
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[rb__cv_timer_create_works],
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[AC_TRY_RUN([
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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int main(int argc, char *argv[])
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{
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#if HAVE_TIMER_CREATE
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struct sigevent ev;
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timer_t timer;
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ev.sigev_notify = SIGEV_SIGNAL;
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ev.sigev_signo = SIGVTALRM;
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if (timer_create(CLOCK_REALTIME, &ev, &timer) != 0) {
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return 1;
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}
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#else
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return 1;
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#endif
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return 0;
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}
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],
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[rb__cv_timer_create_works=yes],
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[rb__cv_timer_create_works=no], [rb__cv_timer_create_works=no])
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])
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case $rb__cv_timer_create_works in
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yes) AC_DEFINE([USE_TIMER_CREATE], 1,
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[Define to 1 if we can use timer_create(CLOCK_REALTIME,...)]);;
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esac
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])
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AC_DEFUN([RB_CHECK_TIMERFD_CREATE],
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[AC_CACHE_CHECK([for a working timerfd_create(CLOCK_REALTIME)],
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[rb__cv_timerfd_create_works],
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[AC_TRY_RUN([
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#ifdef HAVE_TIME_H
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#include <time.h>
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#endif
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#ifdef HAVE_SIGNAL_H
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#include <signal.h>
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#endif
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#ifdef HAVE_UNISTD_H
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#include <unistd.h>
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#endif
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#ifdef HAVE_SYS_TIMERFD_H
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#include <sys/timerfd.h>
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#endif
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int main(int argc, char *argv[])
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{
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#if defined(HAVE_TIMERFD_CREATE) && defined(HAVE_SYS_TIMERFD_H)
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if (timerfd_create(CLOCK_REALTIME, 0) < 0) {
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return 1;
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}
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#else
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return 1;
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#endif
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return 0;
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}
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],
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[rb__cv_timerfd_create_works=yes],
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[rb__cv_timerfd_create_works=no], [rb__cv_timerfd_create_works=no])
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])
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case $rb__cv_timerfd_create_works in
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yes) AC_DEFINE([USE_TIMERFD_CREATE], 1,
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[Define to 1 if we can use timerfd_create(CLOCK_REALTIME,...)]);;
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esac
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])
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dnl
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dnl Useful macros for autoconf to check for ssp-patched gcc
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dnl 1.0 - September 2003 - Tiago Sousa <mirage@kaotik.org>
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dnl 1.1 - August 2006 - Ted Percival <ted@midg3t.net>
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dnl * Stricter language checking (C or C++)
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dnl * Adds GCC_STACK_PROTECT_LIB to add -lssp to LDFLAGS as necessary
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dnl * Caches all results
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dnl * Uses macros to ensure correct ouput in quiet/silent mode
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dnl 1.2 - April 2007 - Ted Percival <ted@midg3t.net>
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dnl * Added GCC_STACK_PROTECTOR macro for simpler (one-line) invocation
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dnl * GCC_STACK_PROTECT_LIB now adds -lssp to LIBS rather than LDFLAGS
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dnl
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dnl About ssp:
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dnl GCC extension for protecting applications from stack-smashing attacks
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dnl http://www.research.ibm.com/trl/projects/security/ssp/
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dnl
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dnl Usage:
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dnl Most people will simply call GCC_STACK_PROTECTOR.
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dnl If you only use one of C or C++, you can save time by only calling the
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dnl macro appropriate for that language. In that case you should also call
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dnl GCC_STACK_PROTECT_LIB first.
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dnl
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dnl GCC_STACK_PROTECTOR
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dnl Tries to turn on stack protection for C and C++ by calling the following
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dnl three macros with the right languages.
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dnl
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dnl GCC_STACK_PROTECT_CC
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dnl checks -fstack-protector with the C compiler, if it exists then updates
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dnl CFLAGS and defines ENABLE_SSP_CC
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dnl
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dnl GCC_STACK_PROTECT_CXX
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dnl checks -fstack-protector with the C++ compiler, if it exists then updates
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dnl CXXFLAGS and defines ENABLE_SSP_CXX
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dnl
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dnl GCC_STACK_PROTECT_LIB
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dnl adds -lssp to LIBS if it is available
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dnl ssp is usually provided as part of libc, but was previously a separate lib
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dnl It does not hurt to add -lssp even if libc provides SSP - in that case
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dnl libssp will simply be ignored.
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dnl
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AC_DEFUN([GCC_STACK_PROTECT_LIB],[
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AC_CACHE_CHECK([whether libssp exists], ssp_cv_lib,
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[ssp_old_libs="$LIBS"
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LIBS="$LIBS -lssp"
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AC_TRY_LINK(,, ssp_cv_lib=yes, ssp_cv_lib=no)
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LIBS="$ssp_old_libs"
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])
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if test $ssp_cv_lib = yes; then
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LIBS="$LIBS -lssp"
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fi
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])
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AC_DEFUN([GCC_STACK_PROTECT_CC],[
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AC_LANG_ASSERT(C)
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if test "X$CC" != "X"; then
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AC_CACHE_CHECK([whether ${CC} accepts -fstack-protector],
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ssp_cv_cc,
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[ssp_old_cflags="$CFLAGS"
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CFLAGS="$CFLAGS -fstack-protector"
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AC_TRY_COMPILE(,, ssp_cv_cc=yes, ssp_cv_cc=no)
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CFLAGS="$ssp_old_cflags"
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])
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if test $ssp_cv_cc = yes; then
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CFLAGS="$CFLAGS -fstack-protector"
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AC_DEFINE([ENABLE_SSP_CC], 1, [Define if SSP C support is enabled.])
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fi
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fi
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])
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AC_DEFUN([GCC_STACK_PROTECT_CXX],[
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AC_LANG_ASSERT(C++)
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if test "X$CXX" != "X"; then
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AC_CACHE_CHECK([whether ${CXX} accepts -fstack-protector],
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ssp_cv_cxx,
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[ssp_old_cxxflags="$CXXFLAGS"
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CXXFLAGS="$CXXFLAGS -fstack-protector"
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AC_TRY_COMPILE(,, ssp_cv_cxx=yes, ssp_cv_cxx=no)
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CXXFLAGS="$ssp_old_cxxflags"
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])
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if test $ssp_cv_cxx = yes; then
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CXXFLAGS="$CXXFLAGS -fstack-protector"
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AC_DEFINE([ENABLE_SSP_CXX], 1, [Define if SSP C++ support is enabled.])
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fi
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fi
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])
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AC_DEFUN([GCC_STACK_PROTECTOR],[
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GCC_STACK_PROTECT_LIB
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AC_LANG_PUSH([C])
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GCC_STACK_PROTECT_CC
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AC_LANG_POP([C])
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AC_LANG_PUSH([C++])
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GCC_STACK_PROTECT_CXX
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AC_LANG_POP([C++])
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])
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