[mirror_lxcfs.git] / configure.ac

# Process this file with autoconf to produce a configure script.

AC_PREREQ([2.69])
AC_INIT([lxcfs], [3.1.2], [lxc-devel@lists.linuxcontainers.org])
AC_SUBST(ACLOCAL_AMFLAGS, "-I m4")
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([config])
AC_CONFIG_HEADERS([config.h])
AC_CONFIG_SRCDIR([configure.ac])

AM_INIT_AUTOMAKE([subdir-objects -Wno-portability])

AC_GNU_SOURCE
AC_CONFIG_FILES([
	Makefile
	lxcfs.spec
	config/Makefile
	config/init/Makefile
	config/init/systemd/Makefile
	config/init/systemd/lxcfs.service
	config/init/sysvinit/Makefile
	config/init/upstart/Makefile
	share/Makefile
	share/00-lxcfs.conf
	share/lxc.mount.hook
	share/lxc.reboot.hook
	tests/Makefile ])

LT_INIT
AC_PROG_CC_C99
AC_CANONICAL_HOST
AM_PROG_CC_C_O
AC_USE_SYSTEM_EXTENSIONS

AC_CHECK_LIB(pthread, main)

# We need pkg-config
PKG_PROG_PKG_CONFIG

PKG_CHECK_MODULES(FUSE, fuse)

AC_PATH_PROG(HELP2MAN, help2man, false // No help2man //)
AM_CONDITIONAL([HAVE_HELP2MAN], [test "x$HELP2MAN" != "xfalse // No help2man //" ])

AC_ARG_WITH([runtime-path],
	[AC_HELP_STRING(
		[--with-runtime-path=dir],
		[runtime directory (default: /run)]
	)], [], [with_runtime_path=['/run']])

AS_AC_EXPAND(RUNTIME_PATH, "$with_runtime_path")
AS_AC_EXPAND(LXCFSSHAREDIR, "$datarootdir/lxcfs")
AS_AC_EXPAND(LXCCONFDIR, "$datarootdir/lxc/config/common.conf.d")
AS_AC_EXPAND(LXCFSTARGETDIR, "$localstatedir/lib/lxcfs")

# Detect the distribution. This is used for the default configuration and
# for some distro-specific build options.
AC_MSG_CHECKING([host distribution])
AC_ARG_WITH(distro, AS_HELP_STRING([--with-distro=DISTRO], [Specify the Linux distribution to target: One of redhat, oracle, centos, fedora, suse, gentoo, debian, arch, slackware, paldo, openmandriva or pardus.]))
if type lsb_release >/dev/null 2>&1 && test "z$with_distro" = "z"; then
	with_distro=`lsb_release -is`
fi
if test "z$with_distro" = "z"; then
	AC_CHECK_FILE(/etc/redhat-release,with_distro="redhat")
	AC_CHECK_FILE(/etc/oracle-release,with_distro="oracle")
	AC_CHECK_FILE(/etc/centos-release,with_distro="centos")
	AC_CHECK_FILE(/etc/fedora-release,with_distro="fedora")
	AC_CHECK_FILE(/etc/SuSE-release,with_distro="suse")
	AC_CHECK_FILE(/etc/gentoo-release,with_distro="gentoo")
	AC_CHECK_FILE(/etc/debian_version,with_distro="debian")
	AC_CHECK_FILE(/etc/arch-release,with_distro="arch")
	AC_CHECK_FILE(/etc/slackware-version,with_distro="slackware")
	AC_CHECK_FILE(/etc/frugalware-release,with_distro="frugalware")
	AC_CHECK_FILE(/etc/mandrakelinux-release, with_distro="openmandriva")
	AC_CHECK_FILE(/etc/mandriva-release,with_distro="openmandriva")
	AC_CHECK_FILE(/etc/pardus-release,with_distro="pardus")
	AC_CHECK_FILE(/etc/pld-release,with_distro="pld")
fi
with_distro=`echo ${with_distro} | tr '[[:upper:]]' '[[:lower:]]'`

if test "z$with_distro" = "z"; then
	with_distro="unknown"
fi
case $with_distro in
	ubuntu)
		distroconf=default.conf.ubuntu
		;;
	redhat|centos|fedora|oracle|oracleserver|pld)
		distroconf=default.conf.libvirt
		;;
	*)
		distroconf=default.conf.unknown
		;;
esac
AC_MSG_RESULT([$with_distro])
AM_CONDITIONAL([HAVE_DEBIAN], [test x"$with_distro" = "xdebian" -o x"$with_distro" = "xubuntu"])
AM_CONDITIONAL([DISTRO_UBUNTU], [test "x$with_distro" = "xubuntu"])

# Check for init system type
AC_MSG_CHECKING([for init system type])
AC_ARG_WITH([init-script],
	    [AC_HELP_STRING([--with-init-script@<:@=TYPE@<:@,TYPE,...@:>@@:>@],
			    [Type(s) of init script to install: bsd, openrc, sysvinit, systemd, upstart,
			     distro @<:@default=distro@:>@])],[],[with_init_script=distro])
case "$with_init_script" in
	distro)
		case $with_distro in
			fedora)
				init_script=systemd
				;;
			redhat|centos|oracle|oracleserver)
				init_script=sysvinit
				;;
			debian)
				init_script=upstart,systemd,sysvinit
				;;
			ubuntu)
				init_script=upstart,systemd,sysvinit
				;;
			pld)
				init_script=systemd,sysvinit
				;;
			slackware)
				echo -n "Warning: bsd init job not yet implemented"
				init_script=
				;;
                        gentoo)
				echo -n "Warning: openrc init job not yet implemented"
				init_script=
				;;
			*)
				echo -n "Linux distribution init system unknown."
				init_script=
				;;
		esac
		;;
	*)
		init_script=$with_init_script
		;;
esac

# Check valid init systems were given, run in subshell so we don't mess up IFS
(IFS="," ; for init_sys in $init_script;
do
	case "$init_sys" in
		none|bsd|openrc|sysvinit|systemd|upstart)
			;;
		*)
			exit 1
			;;
	esac
done) || AC_MSG_ERROR([Unknown init system type in $init_script])

AM_CONDITIONAL([INIT_SCRIPT_BSD], [echo "$init_script" |grep -q "bsd"])
AM_CONDITIONAL([INIT_SCRIPT_OPENRC], [echo "$init_script" |grep -q "openrc"])
AM_CONDITIONAL([INIT_SCRIPT_SYSV], [echo "$init_script" |grep -q "sysvinit"])
AM_CONDITIONAL([INIT_SCRIPT_SYSTEMD], [echo "$init_script" |grep -q "systemd"])
AM_CONDITIONAL([INIT_SCRIPT_UPSTART], [echo "$init_script" |grep -q "upstart"])
AC_MSG_RESULT($init_script)

AC_SUBST([lxcfsdir], "${libdir}/lxcfs")

# Rootfs path, where the container mount structure is assembled
AC_ARG_WITH([rootfs-path],
	[AC_HELP_STRING(
		[--with-rootfs-path=dir],
		[lxc rootfs mount point]
	)], [], [with_rootfs_path=['${libdir}/lxc/rootfs']])

AS_AC_EXPAND(LIBDIR, "$libdir")

AC_CHECK_FUNCS([strlcpy],
	AM_CONDITIONAL(HAVE_STRLCPY, true)
	AC_DEFINE(HAVE_STRLCPY,1,[Have strlcpy]),
	AM_CONDITIONAL(HAVE_STRLCPY, false))
AC_CHECK_FUNCS([strlcat],
	AM_CONDITIONAL(HAVE_STRLCAT, true)
	AC_DEFINE(HAVE_STRLCAT,1,[Have strlcat]),
	AM_CONDITIONAL(HAVE_STRLCAT, false))

AC_CHECK_TYPES([struct clone_args], [], [], [[#include <linux/sched.h>]])

AC_CHECK_FUNCS([clone3],
	AM_CONDITIONAL(HAVE_CLONE3, true)
	AC_DEFINE(HAVE_CLONE3,1,[Supports clone3]),
	AM_CONDITIONAL(HAVE_CLONE3, false))

AC_CHECK_FUNCS([pidfd_open],
	AM_CONDITIONAL(HAVE_PIDFD_OPEN, true)
	AC_DEFINE(HAVE_PIDFD_OPEN,1,[Supports pidfd_open]),
	AM_CONDITIONAL(HAVE_PIDFD_OPEN, false))

AC_CHECK_FUNCS([pidfd_send_signal],
	AM_CONDITIONAL(HAVE_PIDFD_SEND_SIGNAL, true)
	AC_DEFINE(HAVE_PIDFD_SEND_SIGNAL,1,[Supports pidfd_send_signal]),
	AM_CONDITIONAL(HAVE_PIDFD_SEND_SIGNAL, false))

AX_CHECK_COMPILE_FLAG([-fdiagnostics-color], [CFLAGS="$CFLAGS -fdiagnostics-color"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough=5], [CFLAGS="$CFLAGS -Wimplicit-fallthrough=5"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wcast-align], [CFLAGS="$CFLAGS -Wcast-align"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wstrict-prototypes], [CFLAGS="$CFLAGS -Wstrict-prototypes"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-strict-aliasing"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-fstack-clash-protection], [CFLAGS="$CFLAGS -fstack-clash-protection"],,[-Werror])
AX_CHECK_LINK_FLAG([-fstack-protector-strong], [CFLAGS="$CFLAGS -fstack-protector-strong"],,[-Werror])
AX_CHECK_LINK_FLAG([--param=ssp-buffer-size=4], [CFLAGS="$CFLAGS --param=ssp-buffer-size=4"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-g], [CFLAGS="$CFLAGS -g"],,[-Werror])
AX_CHECK_COMPILE_FLAG([--mcet -fcf-protection], [CFLAGS="$CFLAGS --mcet -fcf-protection"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Werror=implicit-function-declaration], [CFLAGS="$CFLAGS -Werror=implicit-function-declaration"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wlogical-op], [CFLAGS="$CFLAGS -Wlogical-op"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wmissing-include-dirs], [CFLAGS="$CFLAGS -Wmissing-include-dirs"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wold-style-definition], [CFLAGS="$CFLAGS -Wold-style-definition"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Winit-self], [CFLAGS="$CFLAGS -Winit-self"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wunused-but-set-variable], [CFLAGS="$CFLAGS -Wunused-but-set-variable"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wfloat-equal], [CFLAGS="$CFLAGS -Wfloat-equal"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wsuggest-attribute=noreturn], [CFLAGS="$CFLAGS -Wsuggest-attribute=noreturn"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Werror=return-type], [CFLAGS="$CFLAGS -Werror=return-type"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Werror=incompatible-pointer-types], [CFLAGS="$CFLAGS -Werror=incompatible-pointer-types"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wformat=2], [CFLAGS="$CFLAGS -Wformat=2"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wshadow], [CFLAGS="$CFLAGS -Wshadow"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wendif-labels], [CFLAGS="$CFLAGS -Wendif-labels"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Werror=overflow], [CFLAGS="$CFLAGS -Werror=overflow"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-fdiagnostics-show-option], [CFLAGS="$CFLAGS -fdiagnostics-show-option"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Werror=shift-count-overflow], [CFLAGS="$CFLAGS -Werror=shift-count-overflow"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Werror=shift-overflow=2], [CFLAGS="$CFLAGS -Werror=shift-overflow=2"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wdate-time], [CFLAGS="$CFLAGS -Wdate-time"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-Wnested-externs], [CFLAGS="$CFLAGS -Wnested-externs"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-fasynchronous-unwind-tables], [CFLAGS="$CFLAGS -fasynchronous-unwind-tables"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-pipe], [CFLAGS="$CFLAGS -pipe"],,[-Werror])
AX_CHECK_COMPILE_FLAG([-fexceptions], [CFLAGS="$CFLAGS -fexceptions"],,[-Werror])

AX_CHECK_LINK_FLAG([-z relro], [LDFLAGS="$LDFLAGS -z relro"],,[])
AX_CHECK_LINK_FLAG([-z now], [LDFLAGS="$LDFLAGS -z now"],,[])

# Build with ASAN commands
AC_ARG_ENABLE([asan],
	[AS_HELP_STRING([--enable-asan], [build with address sanitizer enabled [default=no]])],
	[enable_asan=$enableval], [enable_asan=no])
AM_CONDITIONAL([ENABLE_ASAN], [test "x$enable_asan" = "xyes"])

# Build with UBSAN commands
AC_ARG_ENABLE([ubsan],
	[AS_HELP_STRING([--enable-ubsan], [build with ubsan sanitizer enabled [default=no]])],
	[enable_asan=$enableval], [enable_ubsan=no])
AM_CONDITIONAL([ENABLE_UBSAN], [test "x$enable_ubsan" = "xyes"])

AC_OUTPUT

# Configuration overview
cat << EOF

----------------------------
Environment:
 - compiler: $CC

Debugging:
 - tests: $enable_tests
 - ASAN: $enable_asan
 - mutex debugging: $enable_mutex_debugging
EOF
Commit	Line	Data
2183082c SH	1	# Process this file with autoconf to produce a configure script.
2183082c SH	2
9ce186dc	3	AC_PREREQ([2.69])
9d494a0f	4	AC_INIT([lxcfs], [3.1.2], [lxc-devel@lists.linuxcontainers.org])
7456f3b5 SG	5	AC_SUBST(ACLOCAL_AMFLAGS, "-I m4")
7456f3b5 SG	6	AC_CONFIG_MACRO_DIR([m4])
9ce186dc CB	7	AC_CONFIG_AUX_DIR([config])
	8	AC_CONFIG_HEADERS([config.h])
	9	AC_CONFIG_SRCDIR([configure.ac])
2183082c	10
b46e63e2	11	AM_INIT_AUTOMAKE([subdir-objects -Wno-portability])
df54106a	12
2183082c	13	AC_GNU_SOURCE
2183082c	14	AC_CONFIG_FILES([
c1f9bbee	15	Makefile
3cd4195e	16	lxcfs.spec
6cb7f996 SH	17	config/Makefile
	18	config/init/Makefile
	19	config/init/systemd/Makefile
89113f7e	20	config/init/systemd/lxcfs.service
6cb7f996 SH	21	config/init/sysvinit/Makefile
6cb7f996 SH	22	config/init/upstart/Makefile
7456f3b5 SG	23	share/Makefile
	24	share/00-lxcfs.conf
	25	share/lxc.mount.hook
5d6df2dd	26	share/lxc.reboot.hook
c1f9bbee	27	tests/Makefile ])
2183082c	28
2183082c	29	LT_INIT
2183082c	30	AC_PROG_CC_C99
9ce186dc CB	31	AC_CANONICAL_HOST
	32	AM_PROG_CC_C_O
	33	AC_USE_SYSTEM_EXTENSIONS
2183082c	34
2c51f8dd SH	35	AC_CHECK_LIB(pthread, main)
2c51f8dd SH	36
9ce186dc CB	37	# We need pkg-config
	38	PKG_PROG_PKG_CONFIG
	39
2183082c SH	40	PKG_CHECK_MODULES(FUSE, fuse)
	41
	42	AC_PATH_PROG(HELP2MAN, help2man, false // No help2man //)
d85bd3de	43	AM_CONDITIONAL([HAVE_HELP2MAN], [test "x$HELP2MAN" != "xfalse // No help2man //" ])
2183082c	44
35482f91 SH	45	AC_ARG_WITH([runtime-path],
	46	[AC_HELP_STRING(
	47	[--with-runtime-path=dir],
	48	[runtime directory (default: /run)]
	49	)], [], [with_runtime_path=['/run']])
	50
	51	AS_AC_EXPAND(RUNTIME_PATH, "$with_runtime_path")
7456f3b5	52	AS_AC_EXPAND(LXCFSSHAREDIR, "$datarootdir/lxcfs")
b4851b56	53	AS_AC_EXPAND(LXCCONFDIR, "$datarootdir/lxc/config/common.conf.d")
7456f3b5 SG	54	AS_AC_EXPAND(LXCFSTARGETDIR, "$localstatedir/lib/lxcfs")
7456f3b5 SG	55
6cb7f996 SH	56	# Detect the distribution. This is used for the default configuration and
	57	# for some distro-specific build options.
	58	AC_MSG_CHECKING([host distribution])
	59	AC_ARG_WITH(distro, AS_HELP_STRING([--with-distro=DISTRO], [Specify the Linux distribution to target: One of redhat, oracle, centos, fedora, suse, gentoo, debian, arch, slackware, paldo, openmandriva or pardus.]))
	60	if type lsb_release >/dev/null 2>&1 && test "z$with_distro" = "z"; then
	61	with_distro=`lsb_release -is`
	62	fi
	63	if test "z$with_distro" = "z"; then
	64	AC_CHECK_FILE(/etc/redhat-release,with_distro="redhat")
	65	AC_CHECK_FILE(/etc/oracle-release,with_distro="oracle")
	66	AC_CHECK_FILE(/etc/centos-release,with_distro="centos")
	67	AC_CHECK_FILE(/etc/fedora-release,with_distro="fedora")
	68	AC_CHECK_FILE(/etc/SuSE-release,with_distro="suse")
	69	AC_CHECK_FILE(/etc/gentoo-release,with_distro="gentoo")
	70	AC_CHECK_FILE(/etc/debian_version,with_distro="debian")
	71	AC_CHECK_FILE(/etc/arch-release,with_distro="arch")
	72	AC_CHECK_FILE(/etc/slackware-version,with_distro="slackware")
	73	AC_CHECK_FILE(/etc/frugalware-release,with_distro="frugalware")
	74	AC_CHECK_FILE(/etc/mandrakelinux-release, with_distro="openmandriva")
	75	AC_CHECK_FILE(/etc/mandriva-release,with_distro="openmandriva")
	76	AC_CHECK_FILE(/etc/pardus-release,with_distro="pardus")
00d7fdd8	77	AC_CHECK_FILE(/etc/pld-release,with_distro="pld")
6cb7f996 SH	78	fi
	79	with_distro=`echo ${with_distro} \| tr '[[:upper:]]' '[[:lower:]]'`
	80
	81	if test "z$with_distro" = "z"; then
	82	with_distro="unknown"
	83	fi
	84	case $with_distro in
	85	ubuntu)
	86	distroconf=default.conf.ubuntu
	87	;;
00d7fdd8	88	redhat\|centos\|fedora\|oracle\|oracleserver\|pld)
6cb7f996 SH	89	distroconf=default.conf.libvirt
	90	;;
	91	*)
	92	distroconf=default.conf.unknown
	93	;;
	94	esac
	95	AC_MSG_RESULT([$with_distro])
	96	AM_CONDITIONAL([HAVE_DEBIAN], [test x"$with_distro" = "xdebian" -o x"$with_distro" = "xubuntu"])
	97	AM_CONDITIONAL([DISTRO_UBUNTU], [test "x$with_distro" = "xubuntu"])
	98
	99	# Check for init system type
	100	AC_MSG_CHECKING([for init system type])
	101	AC_ARG_WITH([init-script],
	102	[AC_HELP_STRING([--with-init-script@<:@=TYPE@<:@,TYPE,...@:>@@:>@],
	103	[Type(s) of init script to install: bsd, openrc, sysvinit, systemd, upstart,
	104	distro @<:@default=distro@:>@])],[],[with_init_script=distro])
	105	case "$with_init_script" in
	106	distro)
	107	case $with_distro in
	108	fedora)
	109	init_script=systemd
	110	;;
	111	redhat\|centos\|oracle\|oracleserver)
	112	init_script=sysvinit
	113	;;
	114	debian)
ef2256ce	115	init_script=upstart,systemd,sysvinit
6cb7f996 SH	116	;;
6cb7f996 SH	117	ubuntu)
ef2256ce	118	init_script=upstart,systemd,sysvinit
6cb7f996	119	;;
00d7fdd8 ER	120	pld)
	121	init_script=systemd,sysvinit
	122	;;
6cb7f996 SH	123	slackware)
	124	echo -n "Warning: bsd init job not yet implemented"
	125	init_script=
	126	;;
	127	gentoo)
	128	echo -n "Warning: openrc init job not yet implemented"
	129	init_script=
	130	;;
	131	*)
	132	echo -n "Linux distribution init system unknown."
	133	init_script=
	134	;;
	135	esac
	136	;;
	137	*)
	138	init_script=$with_init_script
	139	;;
	140	esac
	141
	142	# Check valid init systems were given, run in subshell so we don't mess up IFS
	143	(IFS="," ; for init_sys in $init_script;
	144	do
	145	case "$init_sys" in
	146	none\|bsd\|openrc\|sysvinit\|systemd\|upstart)
	147	;;
	148	*)
	149	exit 1
	150	;;
	151	esac
	152	done) \|\| AC_MSG_ERROR([Unknown init system type in $init_script])
	153
	154	AM_CONDITIONAL([INIT_SCRIPT_BSD], [echo "$init_script" \|grep -q "bsd"])
	155	AM_CONDITIONAL([INIT_SCRIPT_OPENRC], [echo "$init_script" \|grep -q "openrc"])
	156	AM_CONDITIONAL([INIT_SCRIPT_SYSV], [echo "$init_script" \|grep -q "sysvinit"])
	157	AM_CONDITIONAL([INIT_SCRIPT_SYSTEMD], [echo "$init_script" \|grep -q "systemd"])
	158	AM_CONDITIONAL([INIT_SCRIPT_UPSTART], [echo "$init_script" \|grep -q "upstart"])
	159	AC_MSG_RESULT($init_script)
	160
369154d6	161	AC_SUBST([lxcfsdir], "${libdir}/lxcfs")
df54106a	162
237e200e SH	163	# Rootfs path, where the container mount structure is assembled
	164	AC_ARG_WITH([rootfs-path],
	165	[AC_HELP_STRING(
	166	[--with-rootfs-path=dir],
	167	[lxc rootfs mount point]
	168	)], [], [with_rootfs_path=['${libdir}/lxc/rootfs']])
	169
	170	AS_AC_EXPAND(LIBDIR, "$libdir")
	171
5fbea8a6 CB	172	AC_CHECK_FUNCS([strlcpy],
	173	AM_CONDITIONAL(HAVE_STRLCPY, true)
	174	AC_DEFINE(HAVE_STRLCPY,1,[Have strlcpy]),
	175	AM_CONDITIONAL(HAVE_STRLCPY, false))
	176	AC_CHECK_FUNCS([strlcat],
	177	AM_CONDITIONAL(HAVE_STRLCAT, true)
	178	AC_DEFINE(HAVE_STRLCAT,1,[Have strlcat]),
	179	AM_CONDITIONAL(HAVE_STRLCAT, false))
	180
87f7558b CB	181	AC_CHECK_TYPES([struct clone_args], [], [], [[#include <linux/sched.h>]])
	182
	183	AC_CHECK_FUNCS([clone3],
	184	AM_CONDITIONAL(HAVE_CLONE3, true)
	185	AC_DEFINE(HAVE_CLONE3,1,[Supports clone3]),
	186	AM_CONDITIONAL(HAVE_CLONE3, false))
	187
2aa59b2e CB	188	AC_CHECK_FUNCS([pidfd_open],
	189	AM_CONDITIONAL(HAVE_PIDFD_OPEN, true)
	190	AC_DEFINE(HAVE_PIDFD_OPEN,1,[Supports pidfd_open]),
	191	AM_CONDITIONAL(HAVE_PIDFD_OPEN, false))
	192
	193	AC_CHECK_FUNCS([pidfd_send_signal],
	194	AM_CONDITIONAL(HAVE_PIDFD_SEND_SIGNAL, true)
	195	AC_DEFINE(HAVE_PIDFD_SEND_SIGNAL,1,[Supports pidfd_send_signal]),
	196	AM_CONDITIONAL(HAVE_PIDFD_SEND_SIGNAL, false))
	197
9ce186dc CB	198	AX_CHECK_COMPILE_FLAG([-fdiagnostics-color], [CFLAGS="$CFLAGS -fdiagnostics-color"],,[-Werror])
	199	AX_CHECK_COMPILE_FLAG([-Wimplicit-fallthrough=5], [CFLAGS="$CFLAGS -Wimplicit-fallthrough=5"],,[-Werror])
	200	AX_CHECK_COMPILE_FLAG([-Wcast-align], [CFLAGS="$CFLAGS -Wcast-align"],,[-Werror])
	201	AX_CHECK_COMPILE_FLAG([-Wstrict-prototypes], [CFLAGS="$CFLAGS -Wstrict-prototypes"],,[-Werror])
	202	AX_CHECK_COMPILE_FLAG([-fno-strict-aliasing], [CFLAGS="$CFLAGS -fno-strict-aliasing"],,[-Werror])
	203	AX_CHECK_COMPILE_FLAG([-fstack-clash-protection], [CFLAGS="$CFLAGS -fstack-clash-protection"],,[-Werror])
	204	AX_CHECK_LINK_FLAG([-fstack-protector-strong], [CFLAGS="$CFLAGS -fstack-protector-strong"],,[-Werror])
	205	AX_CHECK_LINK_FLAG([--param=ssp-buffer-size=4], [CFLAGS="$CFLAGS --param=ssp-buffer-size=4"],,[-Werror])
	206	AX_CHECK_COMPILE_FLAG([-g], [CFLAGS="$CFLAGS -g"],,[-Werror])
	207	AX_CHECK_COMPILE_FLAG([--mcet -fcf-protection], [CFLAGS="$CFLAGS --mcet -fcf-protection"],,[-Werror])
	208	AX_CHECK_COMPILE_FLAG([-Werror=implicit-function-declaration], [CFLAGS="$CFLAGS -Werror=implicit-function-declaration"],,[-Werror])
	209	AX_CHECK_COMPILE_FLAG([-Wlogical-op], [CFLAGS="$CFLAGS -Wlogical-op"],,[-Werror])
	210	AX_CHECK_COMPILE_FLAG([-Wmissing-include-dirs], [CFLAGS="$CFLAGS -Wmissing-include-dirs"],,[-Werror])
	211	AX_CHECK_COMPILE_FLAG([-Wold-style-definition], [CFLAGS="$CFLAGS -Wold-style-definition"],,[-Werror])
	212	AX_CHECK_COMPILE_FLAG([-Winit-self], [CFLAGS="$CFLAGS -Winit-self"],,[-Werror])
	213	AX_CHECK_COMPILE_FLAG([-Wunused-but-set-variable], [CFLAGS="$CFLAGS -Wunused-but-set-variable"],,[-Werror])
	214	AX_CHECK_COMPILE_FLAG([-Wfloat-equal], [CFLAGS="$CFLAGS -Wfloat-equal"],,[-Werror])
	215	AX_CHECK_COMPILE_FLAG([-Wsuggest-attribute=noreturn], [CFLAGS="$CFLAGS -Wsuggest-attribute=noreturn"],,[-Werror])
	216	AX_CHECK_COMPILE_FLAG([-Werror=return-type], [CFLAGS="$CFLAGS -Werror=return-type"],,[-Werror])
	217	AX_CHECK_COMPILE_FLAG([-Werror=incompatible-pointer-types], [CFLAGS="$CFLAGS -Werror=incompatible-pointer-types"],,[-Werror])
	218	AX_CHECK_COMPILE_FLAG([-Wformat=2], [CFLAGS="$CFLAGS -Wformat=2"],,[-Werror])
	219	AX_CHECK_COMPILE_FLAG([-Wshadow], [CFLAGS="$CFLAGS -Wshadow"],,[-Werror])
	220	AX_CHECK_COMPILE_FLAG([-Wendif-labels], [CFLAGS="$CFLAGS -Wendif-labels"],,[-Werror])
	221	AX_CHECK_COMPILE_FLAG([-Werror=overflow], [CFLAGS="$CFLAGS -Werror=overflow"],,[-Werror])
	222	AX_CHECK_COMPILE_FLAG([-fdiagnostics-show-option], [CFLAGS="$CFLAGS -fdiagnostics-show-option"],,[-Werror])
	223	AX_CHECK_COMPILE_FLAG([-Werror=shift-count-overflow], [CFLAGS="$CFLAGS -Werror=shift-count-overflow"],,[-Werror])
	224	AX_CHECK_COMPILE_FLAG([-Werror=shift-overflow=2], [CFLAGS="$CFLAGS -Werror=shift-overflow=2"],,[-Werror])
	225	AX_CHECK_COMPILE_FLAG([-Wdate-time], [CFLAGS="$CFLAGS -Wdate-time"],,[-Werror])
	226	AX_CHECK_COMPILE_FLAG([-Wnested-externs], [CFLAGS="$CFLAGS -Wnested-externs"],,[-Werror])
	227	AX_CHECK_COMPILE_FLAG([-fasynchronous-unwind-tables], [CFLAGS="$CFLAGS -fasynchronous-unwind-tables"],,[-Werror])
	228	AX_CHECK_COMPILE_FLAG([-pipe], [CFLAGS="$CFLAGS -pipe"],,[-Werror])
	229	AX_CHECK_COMPILE_FLAG([-fexceptions], [CFLAGS="$CFLAGS -fexceptions"],,[-Werror])
	230
	231	AX_CHECK_LINK_FLAG([-z relro], [LDFLAGS="$LDFLAGS -z relro"],,[])
	232	AX_CHECK_LINK_FLAG([-z now], [LDFLAGS="$LDFLAGS -z now"],,[])
	233
7eac3825 CB	234	# Build with ASAN commands
	235	AC_ARG_ENABLE([asan],
	236	[AS_HELP_STRING([--enable-asan], [build with address sanitizer enabled [default=no]])],
	237	[enable_asan=$enableval], [enable_asan=no])
	238	AM_CONDITIONAL([ENABLE_ASAN], [test "x$enable_asan" = "xyes"])
	239
	240	# Build with UBSAN commands
	241	AC_ARG_ENABLE([ubsan],
	242	[AS_HELP_STRING([--enable-ubsan], [build with ubsan sanitizer enabled [default=no]])],
	243	[enable_asan=$enableval], [enable_ubsan=no])
	244	AM_CONDITIONAL([ENABLE_UBSAN], [test "x$enable_ubsan" = "xyes"])
	245
2183082c	246	AC_OUTPUT
7eac3825 CB	247
	248	# Configuration overview
	249	cat << EOF
	250
	251	----------------------------
	252	Environment:
	253	- compiler: $CC
	254
	255	Debugging:
	256	- tests: $enable_tests
	257	- ASAN: $enable_asan
	258	- mutex debugging: $enable_mutex_debugging
	259	EOF