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configure.ac
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# $Id: configure.ac,v 1.519 2013/03/22 01:49:15 dtucker Exp $
#
# Copyright (c) 2016 Gilles Chehade <gilles@poolp.org>
# Copyright (c) 1999-2004 Damien Miller
#
# Permission to use, copy, modify, and distribute this software for any
# purpose with or without fee is hereby granted, provided that the above
# copyright notice and this permission notice appear in all copies.
#
# THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
# WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
# MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
# ANY SPECIAL, DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
# WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
# ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
# OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
#
# WE NEED TO CLEANUP CONFIGURE.AC AND MAKE IT FOLLOW THE
# STANDARD LAYOUT ...
#
# 3.1.3 Standard configure.ac Layout
#
# https://www.gnu.org/software/autoconf/manual/autoconf-2.69/html_node/Autoconf-Input-Layout.html
#
#
# AUTOCONF REQUIREMENTS
#
AC_PREREQ(2.69)
#
# AC_INIT
#
AC_INIT([OpenSMTPD],
[portable],
[bugs@opensmtpd.org],
[opensmtpd],
[https://www.OpenSMTPD.org])
AM_INIT_AUTOMAKE([subdir-objects no-dependencies])
LT_INIT
# here we should test for variables set by libtool detection
if test "x$with_pic" != "xno"; then
CFLAGS="$CFLAGS ${pic_flag}"
fi
#
# PACKAGE INFORMATION
#
AC_LANG([C])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_HEADER([config.h])
AC_PROG_CC
AC_CANONICAL_HOST
AC_C_BIGENDIAN
#
# CHECKS FOR PROGRAMS
#
AC_PROG_CPP
AC_PROG_INSTALL
AC_PROG_LIBTOOL
AC_PATH_PROG([AR], [ar])
AC_PATH_PROG([CAT], [cat])
AC_PATH_PROG([CHMOD], [chmod])
AC_PATH_PROG([CHOWN], [chown])
AC_PATH_PROG([ZCAT], [zcat])
AC_PATH_PROG([SED], [sed])
AC_PATH_PROG([TEST_MINUS_S_SH], [bash])
AC_PATH_PROG([TEST_MINUS_S_SH], [ksh])
AC_PATH_PROG([TEST_MINUS_S_SH], [sh])
AC_PATH_PROG([SH], [sh])
AC_PATH_PROG([GROFF], [groff])
AC_PATH_PROG([NROFF], [nroff])
AC_PATH_PROG([MANDOC], [mandoc])
AC_PROG_YACC
AC_SUBST([ZCAT])
if test -z "$AR"; then
AC_MSG_ERROR([*** 'ar' missing, please install or fix your \$PATH ***])
fi
if test -z "$LD"; then
LD=$CC
fi
AC_SUBST([LD])
dnl select manpage formatter
if test -n "$MANDOC"; then
MANFMT="$MANDOC"
elif test -n "$NROFF"; then
MANFMT="$NROFF -mandoc"
elif test -n "$GROFF"; then
MANFMT="$GROFF -mandoc -Tascii"
else
AC_MSG_WARN([no manpage formatted found])
MANFMT="false"
fi
AC_SUBST([MANFMT])
#
# CHECKS FOR LIBRARIES
#
#
# CHECKS FOR HEADERS
#
AC_CHECK_HEADERS([ \
arpa/nameser_compat.h \
crypt.h \
dirent.h \
err.h \
fcntl.h \
getopt.h \
grp.h \
libgen.h \
limits.h \
maillock.h \
mach/mach_time.h \
ndir.h \
netdb.h \
pam/pam_appl.h \
paths.h \
security/pam_appl.h \
shadow.h \
sys/cdefs.h \
sys/dir.h \
sys/file.h \
sys/mount.h \
sys/ndir.h \
sys/pstat.h \
sys/statfs.h \
sys/time.h \
sys/un.h \
time.h \
ucred.h \
util.h \
vis.h
])
AM_CONDITIONAL([NEED_ERR_H], [test x$HAVE_ERR_H = x1])
AM_CONDITIONAL([SUPPORT_PATHS_H], [test x$HAVE_PATHS_H = x1])
# NetBSD requires sys/types.h before login_cap.h
AC_CHECK_HEADERS([login_cap.h], [], [], [
#include <sys/types.h>
])
# older BSDs need sys/param.h before sys/mount.h
AC_CHECK_HEADERS([sys/mount.h], [], [], [
#include <sys/param.h>
])
AC_CHECK_HEADERS([bsd/libutil.h libutil.h])
AC_CHECK_HEADER([fts.h],
[],
[AC_MSG_ERROR([*** fts.h missing - please install libfts ***])],
[
#include <sys/types.h>
#include <sys/stat.h>
])
need_libasr=no
AC_CHECK_HEADER([asr.h],
[],
[need_libasr=yes],
[
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
])
AM_CONDITIONAL([NEED_LIBASR], [test x"$need_libasr" = x"yes"])
#
# CHECKS FOR TYPES
#
AC_CHECK_TYPES([long long, unsigned long long, long double, u_int, u_char])
AC_CHECK_SIZEOF([short int], [2])
AC_CHECK_SIZEOF([int], [4])
AC_CHECK_SIZEOF([long int], [4])
AC_CHECK_SIZEOF([long long int], [8])
AC_TYPE_INT8_T
AC_TYPE_INT16_T
AC_TYPE_INT32_T
AC_TYPE_INT64_T
AC_TYPE_UINT8_T
AC_TYPE_UINT16_T
AC_TYPE_UINT32_T
AC_TYPE_UINT64_T
AC_TYPE_INTPTR_T
AC_TYPE_INTMAX_T
AC_TYPE_UINTPTR_T
AC_TYPE_UINTMAX_T
AC_TYPE_SIZE_T
AC_TYPE_SSIZE_T
AC_TYPE_OFF_T
AC_TYPE_MODE_T
AC_TYPE_PID_T
AC_TYPE_UID_T
TYPE_SOCKLEN_T
AC_CHECK_TYPES([sig_atomic_t], [], [], [
#include <signal.h>
])
AC_CHECK_TYPES([fsblkcnt_t, fsfilcnt_t], [], [], [
#include <sys/types.h>
#ifdef HAVE_SYS_BITYPES_H
#include <sys/bitypes.h>
#endif
#ifdef HAVE_SYS_STATFS_H
#include <sys/statfs.h>
#endif
#ifdef HAVE_SYS_STATVFS_H
#include <sys/statvfs.h>
#endif
])
AC_CHECK_TYPES([in_addr_t, in_port_t], [], [], [
#include <sys/types.h>
#include <netinet/in.h>
])
AC_CHECK_TYPES([sa_family_t], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
#include <netinet/in.h>
])
AC_CHECK_TYPES([struct timespec])
AC_CHECK_TYPES([struct ifgroupreq])
AC_CHECK_TYPES([struct sockaddr_storage], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
])
AC_CHECK_TYPES([struct sockaddr_in6], [], [], [
#include <sys/types.h>
#include <netinet/in.h>
])
AC_CHECK_TYPES([struct in6_addr], [], [], [
#include <sys/types.h>
#include <netinet/in.h>
])
AC_CHECK_TYPES([struct addrinfo], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
#include <netdb.h>
])
AC_CHECK_TYPES([struct timeval], [], [], [
#include <sys/time.h>
])
AC_CHECK_DECL([LLONG_MAX], [have_llong_max=1], , [#include <limits.h>])
#
# CHECKS FOR STRUCTURES
#
AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_scope_id], [], [], [
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <netinet/in.h>
])
AC_CHECK_MEMBERS([struct passwd.pw_gecos, struct passwd.pw_class,
struct passwd.pw_change, struct passwd.pw_expire],
[], [], [
#include <sys/types.h>
#include <pwd.h>
])
AC_CHECK_MEMBERS([struct stat.st_flags], , ,
[ #include <sys/types.h>
#include <sys/stat.h> ]
)
AC_CHECK_MEMBERS([struct stat.st_mtim], , ,
[ #include <sys/types.h>
#include <sys/stat.h> ]
)
AC_CHECK_MEMBERS([struct stat.st_mtimespec], , ,
[ #include <sys/types.h>
#include <sys/stat.h> ]
)
AC_CHECK_MEMBERS([struct sockaddr.sa_len], , ,
[ #include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h> ]
)
AC_CHECK_MEMBERS([struct sockaddr_storage.ss_len], , ,
[ #include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h> ]
)
AC_CHECK_MEMBERS([struct sockaddr_in.sin_len], , ,
[ #include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h> ]
)
AC_CHECK_MEMBERS([struct sockaddr_in6.sin6_len], , ,
[ #include <netdb.h>
#include <netinet/in.h>
#include <sys/socket.h> ]
)
AC_CHECK_MEMBERS([struct statfs.f_favail], , ,
[ #include <sys/vfs.h>
#include <sys/statfs.h> ]
)
AC_CHECK_MEMBERS([struct sockaddr_storage.ss_family], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
])
AC_CHECK_MEMBERS([struct sockaddr_storage.__ss_family], [], [], [
#include <sys/types.h>
#include <sys/socket.h>
])
AC_CHECK_MEMBERS([struct tm.tm_gmtoff, struct tm.tm_zone], [],
[
AC_CHECK_DECLS([timezone, altzone, tzname],
[],
[ AC_MSG_ERROR([cannot find timezone])],
[ #include <time.h> ]
)
],
[ #include <time.h> ]
)
AC_CHECK_MEMBERS([struct DIR.d_type], [], [], [
#include <sys/types.h>
#include <dirent.h>
])
#
# CHECKS FOR DECLARATIONS
#
AC_CHECK_DECLS([O_NONBLOCK], [], [], [
#include <sys/types.h>
#ifdef HAVE_SYS_STAT_H
# include <sys/stat.h>
#endif
#ifdef HAVE_FCNTL_H
# include <fcntl.h>
#endif
])
AC_CHECK_DECLS([AF_LOCAL, PF_LOCAL], [], [], [
#include <sys/socket.h>
])
AC_CHECK_DECLS([IPPORT_HILASTAUTO], [], [], [
#include <netinet/in.h>
])
AC_CHECK_DECLS([WAIT_MYPGRP], [], [], [
#include <sys/wait.h>
])
AC_CHECK_DECLS([writev], [], [], [
#include <sys/types.h>
#include <sys/uio.h>
#include <unistd.h>
])
AC_CHECK_DECLS([LOG_PERROR], [], [], [
#include <syslog.h>
])
#
# CHECKS FOR COMPILER CHARACTERISTICS
#
AC_C_INLINE
AC_ARG_WITH([libs],
[ --with-libs Specify additional libraries to link with],
[
if test -n "$withval" -a "$withval" != "no" -a "${withval}" != "yes"; then
LIBS="$LIBS $withval"
fi
]
)
#
# CHECKS FOR LIBRARY FUNCTIONS
#
AC_SEARCH_LIBS([basename],
[gen],
[
AC_DEFINE([HAVE_BASENAME], [1],
[Define if you have the basename() function.])
])
AC_SEARCH_LIBS([closefrom],
[gen],
[
AC_DEFINE([HAVE_CLOSEFROM], [1],
[Define if you have the closefrom() function.])
AC_COMPILE_IFELSE(
[
AC_LANG_PROGRAM([AC_INCLUDES_DEFAULT], [[int res = closefrom(0);]])
],
AC_DEFINE(HAVE_CLOSEFROM_INT, 1, [closefrom return int])
)
])
AC_SEARCH_LIBS([fmt_scaled],
[util bsd],
[
AC_DEFINE([HAVE_FMT_SCALED], [1],
[Define if you have the fmt_scaled() function.])
])
AC_SEARCH_LIBS([dirname],
[gen],
[
AC_DEFINE([HAVE_DIRNAME], [1],
[Define if you have the dirname() function.])
])
AC_SEARCH_LIBS([inet_net_pton],
[resolv bsd],
[
AC_DEFINE([HAVE_INET_NET_PTON], [1],
[Define if you have the inet_net_pton() function.])
])
AC_SEARCH_LIBS([clock_gettime],
[rt],
[
AC_DEFINE([HAVE_CLOCK_GETTIME], [1],
[Define if you have the clock_gettime() function.])
])
AC_SEARCH_LIBS([fts_open],
[fts],
[
AC_DEFINE([HAVE_FTS_OPEN], [1],
[Define if you have the fts_open() function.])
])
AC_SEARCH_LIBS([daemon],
[bsd],
[
AC_DEFINE([HAVE_DAEMON], [1],
[Define if you have the daemon() function.])
])
AC_SEARCH_LIBS([fparseln],
[util],
[
AC_DEFINE([HAVE_FPARSELN], [1],
[Define if you have the fparseln() function.])
])
AC_SEARCH_LIBS([res_hnok],
[resolv],
[
AC_DEFINE([HAVE_RES_HNOK], [1],
[Define if you have the res_hnok() function.])
])
AC_SEARCH_LIBS([res_randomid],
[resolv],
[
AC_DEFINE([HAVE_RES_RANDOMID], [1],
[Define if you have the res_randomid() function.])
])
AC_SEARCH_LIBS([res_9_b64_ntop],
[resolv],
[
AC_DEFINE([HAVE_RES_9_B64_NTOP], [1],
[Define if you have the res_9_b64_ntop() function.])
])
AC_SEARCH_LIBS([__b64_pton],
[resolv],
[
AC_DEFINE([HAVE___B64_PTON], [1],
[Define if you have the __b64_pton() function.])
])
AC_SEARCH_LIBS([b64_pton],
[resolv],
[
AC_DEFINE([HAVE_B64_PTON], [1],
[Define if you have the b64_pton() function.])
])
AC_SEARCH_LIBS([__b64_ntop],
[resolv],
[
AC_DEFINE([HAVE___B64_NTOP], [1],
[Define if you have the b64_ntop() function.])
])
AC_SEARCH_LIBS([b64_ntop],
[resolv],
[
AC_DEFINE([HAVE_B64_NTOP], [1],
[Define if you have the b64_ntop() function.])
])
AC_SEARCH_LIBS([setsockopt],
[socket],
[
AC_DEFINE([HAVE_SETSOCKOPT], [1],
[Define if you have the setsockopt() function.])
])
AC_SEARCH_LIBS([crypt],
[crypt],
[
AC_DEFINE([HAVE_CRYPT], [1],
[Define if you have the crypt() function.])
])
AC_SEARCH_LIBS([imsg_init],
[util],
[
AC_DEFINE([HAVE_IMSG], [1],
[Define if you have the imsg framework.])
])
AC_SEARCH_LIBS([event_asr_run],
[event],
[
AC_DEFINE([HAVE_EVENT_ASR_RUN], [1],
[Define if you have the event_asr_run() function.])
])
AC_CHECK_FUNCS([ \
asprintf \
arc4random \
bcopy \
calloc_conceal \
chflags \
crypt_checkpass \
dirfd \
err \
errc \
errx \
explicit_bzero \
fchflags \
fgetln \
flock \
freeaddrinfo \
freezero \
getaddrinfo \
getdtablesize \
getdtablecount \
getline \
getnameinfo \
gettimeofday \
getopt \
getpeereid \
getpeerucred \
getspnam \
inet_aton \
inet_ntoa \
inet_ntop \
malloc_conceal \
memmove \
nanosleep \
nsleep \
pidfile \
pledge \
reallocarray \
recallocarray \
res_hnok \
res_randomid \
setenv \
seteuid \
setegid \
setproctitle \
setregid \
setreuid \
setresuid \
setresgid \
setsid \
signal \
sigaction \
snprintf \
socketpair \
strdup \
strerror \
strlcat \
strlcpy \
strmode \
strndup \
strnlen \
strnvis \
strtonum \
sysconf \
tcgetpgrp \
time \
usleep \
vasprintf \
vsnprintf \
waitpid \
warn \
warnx \
])
AC_CHECK_DECL([strsep],
[AC_CHECK_FUNCS([strsep])],
[],
[
#ifdef HAVE_STRING_H
# include <string.h>
#endif
])
# These functions might be found in libressl
AC_CHECK_DECLS([strlcat, strlcpy],
[],
[],
[])
#
# CHECKS FOR SYSTEM SERVICES
#
AC_MSG_CHECKING([for /proc/pid/fd directory])
if test -d "/proc/$$/fd"; then
AC_DEFINE([HAVE_PROC_PID], [1], [Define if you have /proc/$pid/fd])
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
fi
#
# AC_CONFIG_FILES
#
#
# AC_OUTPUT
#
###
### EVERYTHING BELOW MUST BE CLEANED AND MOVED ABOVE
###
#l150 (without _FORTIFY_SOURCE=2)
if test "$GCC" = "yes" -o "$GCC" = "egcs"; then
OSSH_CHECK_CFLAG_COMPILE([-Qunused-arguments])
OSSH_CHECK_CFLAG_COMPILE([-Wunknown-warning-option])
OSSH_CHECK_CFLAG_COMPILE([-Wall])
OSSH_CHECK_CFLAG_COMPILE([-Wpointer-arith])
OSSH_CHECK_CFLAG_COMPILE([-Wuninitialized])
OSSH_CHECK_CFLAG_COMPILE([-Wsign-compare])
OSSH_CHECK_CFLAG_COMPILE([-Wformat-security])
OSSH_CHECK_CFLAG_COMPILE([-Wsizeof-pointer-memaccess])
OSSH_CHECK_CFLAG_COMPILE([-Wpointer-sign], [-Wno-pointer-sign])
OSSH_CHECK_CFLAG_COMPILE([-Wunused-result], [-Wno-unused-result])
OSSH_CHECK_CFLAG_COMPILE([-fno-strict-aliasing])
# OSSH_CHECK_CFLAG_COMPILE([-D_FORTIFY_SOURCE=2])
if test "x$use_toolchain_hardening" = "x1"; then
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,relro])
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,now])
OSSH_CHECK_LDFLAG_LINK([-Wl,-z,noexecstack])
# NB. -ftrapv expects certain support functions to be present in
# the compiler library (libgcc or similar) to detect integer operations
# that can overflow. We must check that the result of enabling it
# actually links. The test program compiled/linked includes a number
# of integer operations that should exercise this.
OSSH_CHECK_CFLAG_LINK([-ftrapv])
fi
AC_MSG_CHECKING([gcc version])
GCC_VER=`$CC -v 2>&1 | $AWK '/gcc version /{print $3}'`
case $GCC_VER in
1.*) no_attrib_nonnull=1 ;;
2.8* | 2.9*)
no_attrib_nonnull=1
;;
2.*) no_attrib_nonnull=1 ;;
*) ;;
esac
AC_MSG_RESULT([$GCC_VER])
AC_MSG_CHECKING([if $CC accepts -fno-builtin-memset])
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -fno-builtin-memset"
AC_LINK_IFELSE([AC_LANG_PROGRAM([[ #include <string.h> ]],
[[ char b[10]; memset(b, 0, sizeof(b)); ]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
CFLAGS="$saved_CFLAGS" ]
)
# -fstack-protector-all doesn't always work for some GCC versions
# and/or platforms, so we test if we can. If it's not supported
# on a given platform gcc will emit a warning so we use -Werror.
if test "x$use_stack_protector" = "x1"; then
for t in -fstack-protector-strong -fstack-protector-all \
-fstack-protector; do
AC_MSG_CHECKING([if $CC supports $t])
saved_CFLAGS="$CFLAGS"
saved_LDFLAGS="$LDFLAGS"
CFLAGS="$CFLAGS $t -Werror"
LDFLAGS="$LDFLAGS $t -Werror"
AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
[[
char x[256];
snprintf(x, sizeof(x), "XXX");
]])],
[ AC_MSG_RESULT([yes])
CFLAGS="$saved_CFLAGS $t"
LDFLAGS="$saved_LDFLAGS $t"
AC_MSG_CHECKING([if $t works])
AC_RUN_IFELSE(
[AC_LANG_PROGRAM([[ #include <stdio.h> ]],
[[
char x[256];
snprintf(x, sizeof(x), "XXX");
]])],
[ AC_MSG_RESULT([yes])
break ],
[ AC_MSG_RESULT([no]) ],
[ AC_MSG_WARN([cross compiling: cannot test])
break ]
)
],
[ AC_MSG_RESULT([no]) ]
)
CFLAGS="$saved_CFLAGS"
LDFLAGS="$saved_LDFLAGS"
done
fi
if test -z "$have_llong_max"; then
# retry LLONG_MAX with -std=gnu99, needed on some Linuxes
unset ac_cv_have_decl_LLONG_MAX
saved_CFLAGS="$CFLAGS"
CFLAGS="$CFLAGS -std=gnu99"
AC_CHECK_DECL([LLONG_MAX],
[have_llong_max=1],
[CFLAGS="$saved_CFLAGS"],
[#include <limits.h>]
)
fi
fi
AC_MSG_CHECKING([if compiler allows __attribute__ on return types])
AC_COMPILE_IFELSE(
[AC_LANG_PROGRAM([[
#include <stdlib.h>
__attribute__((__unused__)) static void foo(void){return;}]],
[[ exit(0); ]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
AC_DEFINE(NO_ATTRIBUTE_ON_RETURN_TYPE, 1,
[compiler does not accept __attribute__ on return types]) ]
)
if test "x$no_attrib_nonnull" != "x1"; then
AC_DEFINE([HAVE_ATTRIBUTE__NONNULL__], [1], [Have attribute nonnull])
fi
AC_ARG_WITH([rpath],
[ --without-rpath Disable auto-added -R linker paths],
[
if test "x$withval" = "xno"; then
need_dash_r=""
fi
if test "x$withval" = "xyes"; then
need_dash_r=1
fi
]
)
AC_ARG_WITH([cflags],
[ --with-cflags Specify additional flags to pass to compiler],
[
if test -n "$withval" -a "$withval" != "no" -a "${withval}" != "yes"; then
CFLAGS="$CFLAGS $withval"
fi
]
)
AC_ARG_WITH([cppflags],
[ --with-cppflags Specify additional flags to pass to preprocessor] ,
[
if test -n "$withval" -a "$withval" != "no" -a "${withval}" != "yes"; then
CPPFLAGS="$CPPFLAGS $withval"
fi
]
)
AC_ARG_WITH([ldflags],
[ --with-ldflags Specify additional flags to pass to linker],
[
if test -n "$withval" -a "$withval" != "xno" -a "${withval}" != "yes"; then
LDFLAGS="$LDFLAGS $withval"
fi
]
)
AC_ARG_WITH([Werror],
[ --with-Werror Build main code with -Werror],
[
if test -n "$withval" -a "$withval" != "no"; then
werror_flags="-Werror"
if test "${withval}" != "yes"; then
werror_flags="$withval"
fi
fi
]
)
AC_ARG_WITH([pie],
[ --with-pie Build Position Independent Executables if possible], [
if test "x$withval" = "xno"; then
use_pie=no
fi
if test "x$withval" = "xyes"; then
use_pie=yes
fi
]
)
if test -z "$use_pie"; then
use_pie=no
fi
if test "x$use_toolchain_hardening" != "x1" -a "x$use_pie" = "xauto"; then
# Turn off automatic PIE when toolchain hardening is off.
use_pie=no
fi
if test "x$use_pie" = "xauto"; then
# Automatic PIE requires gcc >= 4.x
AC_MSG_CHECKING([for gcc >= 4.x])
AC_COMPILE_IFELSE([AC_LANG_SOURCE([[
#if !defined(__GNUC__) || __GNUC__ < 4
#error gcc is too old
#endif
]])],
[ AC_MSG_RESULT([yes]) ],
[ AC_MSG_RESULT([no])
use_pie=no ]
)
fi
if test "x$use_pie" != "xno"; then
SAVED_CFLAGS="$CFLAGS"
SAVED_LDFLAGS="$LDFLAGS"
OSSH_CHECK_CFLAG_COMPILE([-fPIE])
OSSH_CHECK_LDFLAG_LINK([-pie])
# We use both -fPIE and -pie or neither.
AC_MSG_CHECKING([whether both -fPIE and -pie are supported])
if echo "x $CFLAGS" | grep ' -fPIE' >/dev/null 2>&1 && \
echo "x $LDFLAGS" | grep ' -pie' >/dev/null 2>&1 ; then
AC_MSG_RESULT([yes])
else
AC_MSG_RESULT([no])
CFLAGS="$SAVED_CFLAGS"
LDFLAGS="$SAVED_LDFLAGS"
fi
fi
#l432 (customized)
# Check for some target-specific stuff
case "$host" in
*-*-darwin*)
use_pie=auto
AC_MSG_CHECKING([if we have working getaddrinfo])
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
#include <mach-o/dyld.h>
main() { if (NSVersionOfRunTimeLibrary("System") >= (60 << 16))
exit(0);
else
exit(1);
}
]])],
[AC_MSG_RESULT([working])],
[AC_MSG_RESULT([buggy])
AC_DEFINE([BROKEN_GETADDRINFO], [1],
[getaddrinfo is broken (if present)])
],
[AC_MSG_RESULT([assume it is working])])
AC_DEFINE([SETEUID_BREAKS_SETUID], [1], [define if seteuid breaks setuid])
AC_DEFINE([BROKEN_SETREUID], [1], [define if setreuid is broken])
AC_DEFINE([BROKEN_SETREGID], [1], [define if setregid is broken])
AC_DEFINE([BROKEN_GLOB], [1], [OS X glob does not do what we expect])
AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV],
[Define to a Set Process Title type if your system is
supported by bsd-setproctitle.c])
AC_DEFINE([BROKEN_STRNVIS], [1],
[OSX strnvis argument order is swapped compared to OpenBSD])
BROKEN_STRNVIS=1
;;
*-*-dragonfly*)
;;
*-*-linux* | *-gnu* | *-k*bsd*-gnu* )
use_pie=auto
CFLAGS="$CFLAGS -D_BSD_SOURCE -D_DEFAULT_SOURCE"
AC_DEFINE([SPT_TYPE], [SPT_REUSEARGV])
;;
*-*-netbsd*)
if test "x$withval" != "xno"; then
need_dash_r=1
fi
AC_DEFINE([BROKEN_STRNVIS], [1],
[NetBSD strnvis argument order is swapped compared to OpenBSD])
BROKEN_STRNVIS=1
;;
*-*-freebsd*)
AC_DEFINE([BROKEN_GLOB], [1], [FreeBSD glob does not do what we need])
AC_DEFINE([BROKEN_STRNVIS], [1],
[FreeBSD strnvis argument order is swapped compared to OpenBSD])
BROKEN_STRNVIS=1
;;
*-*-openbsd*)
use_pie=auto
AC_DEFINE([HAVE_ATTRIBUTE__SENTINEL__], [1], [OpenBSD's gcc has sentinel])
AC_DEFINE([HAVE_ATTRIBUTE__BOUNDED__], [1], [OpenBSD's gcc has bounded])
AC_DEFINE([BROKEN_STRNVIS], [0],
[FreeBSD strnvis argument order is swapped compared to OpenBSD])
BROKEN_STRNVIS=0
YACC='yacc'
ASR_LIB=
AC_DEFINE([NOOP_ASR_FREEADDRINFO], [0], [OpenBSD doesn't need ASR_FREEADDRINFO])
;;
*-sun-solaris*)
AC_DEFINE([HAVE_M_DATA], [1], [M_DATA is defined in sys/stream.h included by netinet/in.h])
;;
esac
AC_SUBST([ASR_LIB])
AC_MSG_CHECKING([compiler and flags for sanity])
AC_RUN_IFELSE([AC_LANG_PROGRAM([[
#include <stdio.h>
#include <stdlib.h> ]], [[ exit(0); ]])],
[ AC_MSG_RESULT([yes]) ],
[
AC_MSG_RESULT([no])
AC_MSG_ERROR([*** compiler cannot create working executables, check config.log ***])
],
[ AC_MSG_WARN([cross compiling: not checking compiler sanity]) ]
)
#l1747
# Check for missing getpeereid (or equiv) support
NO_PEERCHECK=""
if test "x$ac_cv_func_getpeereid" != "xyes" -a "x$ac_cv_func_getpeerucred" != "xyes"; then
AC_MSG_CHECKING([whether system supports SO_PEERCRED getsockopt])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[
#include <sys/types.h>
#include <sys/socket.h>]], [[int i = SO_PEERCRED;]])],
[ AC_MSG_RESULT([yes])
AC_DEFINE([HAVE_SO_PEERCRED], [1], [Have PEERCRED socket option])
], [AC_MSG_RESULT([no])
NO_PEERCHECK=1
])
fi
#l4176 (customized s/ssh.1/smtpd/smtpd.8/)
# Options from here on. Some of these are preset by platform above
AC_ARG_WITH([mantype],
[ --with-mantype=man|cat|doc Set man page type],
[