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#
# Note:
#
# If for any reason autoconf fails, run "autoreconf -i --install " and try again.
# This is how the error looks like on Arch Linux:
#        ./configure: line 3064: syntax error near unexpected token `newline'
#        ./configure: line 3064: `AX_CHECK_COMPILE_FLAG('
#
# We rely solely on autoconf, without automake. Apparently, in this case
# the macros from m4 directory are not picked up by default by automake.
# "autoreconf -i --install" seems to fix the problem.
#

AC_PREREQ([2.68])
AC_INIT([firejail],[0.9.66rc1],[netblue30@protonmail.com],[],[https://firejail.wordpress.com])
AC_CONFIG_SRCDIR([src/firejail/main.c])

AC_CONFIG_MACRO_DIR([m4])

AC_PROG_CC
AC_PROG_INSTALL
AC_PROG_RANLIB

HAVE_SPECTRE="no"
AX_CHECK_COMPILE_FLAG(
    [-mindirect-branch=thunk],
    [HAVE_SPECTRE="yes" && EXTRA_CFLAGS="$EXTRA_CFLAGS -mindirect-branch=thunk"]
)
AX_CHECK_COMPILE_FLAG(
    [-mretpoline],
    [HAVE_SPECTRE="yes" && EXTRA_CFLAGS="$EXTRA_CFLAGS -mretpoline"]
)
AX_CHECK_COMPILE_FLAG(
    [-fstack-clash-protection],
    [HAVE_SPECTRE="yes" && EXTRA_CFLAGS="$EXTRA_CFLAGS -fstack-clash-protection"]
)
AX_CHECK_COMPILE_FLAG(
    [-fstack-protector-strong],
    [HAVE_SPECTRE="yes" && EXTRA_CFLAGS="$EXTRA_CFLAGS -fstack-protector-strong"]
)

AC_ARG_ENABLE([analyzer],
    AS_HELP_STRING([--enable-analyzer], [enable GCC static analyzer]))
AS_IF([test "x$enable_analyzer" = "xyes"], [
	EXTRA_CFLAGS="$EXTRA_CFLAGS -fanalyzer -Wno-analyzer-malloc-leak"
])

HAVE_APPARMOR=""
AC_ARG_ENABLE([apparmor],
    AS_HELP_STRING([--enable-apparmor], [enable apparmor]))
AS_IF([test "x$enable_apparmor" = "xyes"], [
	HAVE_APPARMOR="-DHAVE_APPARMOR"
	PKG_CHECK_MODULES([AA], libapparmor,
	    [EXTRA_CFLAGS="$EXTRA_CFLAGS $AA_CFLAGS" && EXTRA_LDFLAGS="$EXTRA_LDFLAGS $AA_LIBS"])
	AC_SUBST(HAVE_APPARMOR)
])

HAVE_SELINUX=""
AC_ARG_ENABLE([selinux],
    AS_HELP_STRING([--enable-selinux], [SELinux labeling support]))
AS_IF([test "x$enable_selinux" = "xyes"], [
	HAVE_SELINUX="-DHAVE_SELINUX"
	EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lselinux "
	AC_SUBST(HAVE_SELINUX)
])

AC_SUBST([EXTRA_CFLAGS])
AC_SUBST([EXTRA_LDFLAGS])


HAVE_DBUSPROXY=""
AC_ARG_ENABLE([dbusproxy],
    AS_HELP_STRING([--disable-dbusproxy], [disable dbus proxy]))
AS_IF([test "x$enable_dbusproxy" != "xno"], [
	HAVE_DBUSPROXY="-DHAVE_DBUSPROXY"
	AC_SUBST(HAVE_DBUSPROXY)
])

# overlayfs features temporarely disabled pending fixes
HAVE_OVERLAYFS=""
AC_SUBST(HAVE_OVERLAYFS)
#
#AC_ARG_ENABLE([overlayfs],
#    AS_HELP_STRING([--disable-overlayfs], [disable overlayfs]))
#AS_IF([test "x$enable_overlayfs" != "xno"], [
#	HAVE_OVERLAYFS="-DHAVE_OVERLAYFS"
#	AC_SUBST(HAVE_OVERLAYFS)
#])

HAVE_OUTPUT=""
AC_ARG_ENABLE([output],
    AS_HELP_STRING([--disable-output], [disable --output logging]))
AS_IF([test "x$enable_output" != "xno"], [
	HAVE_OUTPUT="-DHAVE_OUTPUT"
	AC_SUBST(HAVE_OUTPUT)
])

HAVE_USERTMPFS=""
AC_ARG_ENABLE([usertmpfs],
    AS_HELP_STRING([--disable-usertmpfs], [disable tmpfs as regular user]))
AS_IF([test "x$enable_usertmpfs" != "xno"], [
	HAVE_USERTMPFS="-DHAVE_USERTMPFS"
	AC_SUBST(HAVE_USERTMPFS)
])

HAVE_MAN="no"
AC_ARG_ENABLE([man],
    AS_HELP_STRING([--disable-man], [disable man pages]))
AS_IF([test "x$enable_man" != "xno"], [
	HAVE_MAN="-DHAVE_MAN"
	AC_SUBST(HAVE_MAN)
	AC_CHECK_PROG([HAVE_GAWK], [gawk], [yes], [no])
	AS_IF([test "x$HAVE_GAWK" != "xyes"], [AC_MSG_ERROR("*** gawk not found ***")])
])

HAVE_FIRETUNNEL=""
AC_ARG_ENABLE([firetunnel],
    AS_HELP_STRING([--disable-firetunnel], [disable firetunnel]))
AS_IF([test "x$enable_firetunnel" != "xno"], [
	HAVE_FIRETUNNEL="-DHAVE_FIRETUNNEL"
	AC_SUBST(HAVE_FIRETUNNEL)
])

HAVE_PRIVATEHOME=""
AC_ARG_ENABLE([private-home],
    AS_HELP_STRING([--disable-private-home], [disable private home feature]))
AS_IF([test "x$enable_private_home" != "xno"], [
	HAVE_PRIVATE_HOME="-DHAVE_PRIVATE_HOME"
	AC_SUBST(HAVE_PRIVATE_HOME)
])

HAVE_CHROOT=""
AC_ARG_ENABLE([chroot],
    AS_HELP_STRING([--disable-chroot], [disable chroot]))
AS_IF([test "x$enable_chroot" != "xno"], [
	HAVE_CHROOT="-DHAVE_CHROOT"
	AC_SUBST(HAVE_CHROOT)
])

HAVE_GLOBALCFG=""
AC_ARG_ENABLE([globalcfg],
    AS_HELP_STRING([--disable-globalcfg], [if the global config file firejail.cfg is not present, continue the program using defaults]))
AS_IF([test "x$enable_globalcfg" != "xno"], [
	HAVE_GLOBALCFG="-DHAVE_GLOBALCFG"
	AC_SUBST(HAVE_GLOBALCFG)
])

HAVE_NETWORK=""
AC_ARG_ENABLE([network],
    AS_HELP_STRING([--disable-network], [disable network]))
AS_IF([test "x$enable_network" != "xno"], [
	HAVE_NETWORK="-DHAVE_NETWORK"
	AC_SUBST(HAVE_NETWORK)
])

HAVE_USERNS=""
AC_ARG_ENABLE([userns],
    AS_HELP_STRING([--disable-userns], [disable user namespace]))
AS_IF([test "x$enable_userns" != "xno"], [
	HAVE_USERNS="-DHAVE_USERNS"
	AC_SUBST(HAVE_USERNS)
])

HAVE_X11=""
AC_ARG_ENABLE([x11],
    AS_HELP_STRING([--disable-x11], [disable X11 sandboxing support]))
AS_IF([test "x$enable_x11" != "xno"], [
	HAVE_X11="-DHAVE_X11"
	AC_SUBST(HAVE_X11)
])

HAVE_FILE_TRANSFER=""
AC_ARG_ENABLE([file-transfer],
    AS_HELP_STRING([--disable-file-transfer], [disable file transfer]))
AS_IF([test "x$enable_file_transfer" != "xno"], [
	HAVE_FILE_TRANSFER="-DHAVE_FILE_TRANSFER"
	AC_SUBST(HAVE_FILE_TRANSFER)
])

HAVE_WHITELIST=""
AC_ARG_ENABLE([whitelist],
    AS_HELP_STRING([--disable-whitelist], [disable whitelist]))
AS_IF([test "x$enable_whitelist" != "xno"], [
	HAVE_WHITELIST="-DHAVE_WHITELIST"
	AC_SUBST(HAVE_WHITELIST)
])

HAVE_SUID=""
AC_ARG_ENABLE([suid],
    AS_HELP_STRING([--disable-suid], [install as a non-SUID executable]))
AS_IF([test "x$enable_suid" = "xno"],
	[HAVE_SUID="no"],
	[HAVE_SUID="yes"]
)
AC_SUBST(HAVE_SUID)

HAVE_FATAL_WARNINGS=""
AC_ARG_ENABLE([fatal_warnings],
    AS_HELP_STRING([--enable-fatal-warnings], [-W -Wall -Werror]))
AS_IF([test "x$enable_fatal_warnings" = "xyes"], [
	HAVE_FATAL_WARNINGS="-W -Wall -Werror"
	AC_SUBST(HAVE_FATAL_WARNINGS)
])

BUSYBOX_WORKAROUND="no"
AC_ARG_ENABLE([busybox-workaround],
    AS_HELP_STRING([--enable-busybox-workaround], [enable busybox workaround]))
AS_IF([test "x$enable_busybox_workaround" = "xyes"], [
	BUSYBOX_WORKAROUND="yes"
	AC_SUBST(BUSYBOX_WORKAROUND)
])


HAVE_GCOV=""
AC_ARG_ENABLE([gcov],
    AS_HELP_STRING([--enable-gcov], [Gcov instrumentation]))
AS_IF([test "x$enable_gcov" = "xyes"], [
	HAVE_GCOV="--coverage -DHAVE_GCOV "
	EXTRA_LDFLAGS="$EXTRA_LDFLAGS -lgcov --coverage "
	AC_SUBST(HAVE_GCOV)
])

HAVE_CONTRIB_INSTALL="yes"
AC_ARG_ENABLE([contrib-install],
    AS_HELP_STRING([--enable-contrib-install], [install contrib scripts]))
AS_IF([test "x$enable_contrib_install" = "xno"],
	[HAVE_CONTRIB_INSTALL="no"],
	[HAVE_CONTRIB_INSTALL="yes"]
)
AC_SUBST(HAVE_CONTRIB_INSTALL)

HAVE_FORCE_NONEWPRIVS=""
AC_ARG_ENABLE([force-nonewprivs],
    AS_HELP_STRING([--enable-force-nonewprivs], [enable force nonewprivs]))
AS_IF([test "x$enable_force_nonewprivs" = "xyes"], [
	HAVE_FORCE_NONEWPRIVS="-DHAVE_FORCE_NONEWPRIVS"
	AC_SUBST(HAVE_FORCE_NONEWPRIVS)
])

HAVE_LTS=""
AC_ARG_ENABLE([lts],
    AS_HELP_STRING([--enable-lts], [enable long-term support software version (LTS)]))
AS_IF([test "x$enable_lts" = "xyes"], [
	HAVE_LTS="-DHAVE_LTS"
	AC_SUBST(HAVE_LTS)

	HAVE_DBUSPROXY=""
	AC_SUBST(HAVE_DBUSPROXY)

	HAVE_OVERLAYFS=""
	AC_SUBST(HAVE_OVERLAYFS)

	HAVE_OUTPUT=""
	AC_SUBST(HAVE_OUTPUT)

	HAVE_USERTMPFS=""
	AC_SUBST(HAVE_USERTMPFS)

	HAVE_MAN="-DHAVE_MAN"
	AC_SUBST(HAVE_MAN)

	HAVE_FIRETUNNEL=""
	AC_SUBST(HAVE_FIRETUNNEL)

	HAVE_PRIVATEHOME=""
	AC_SUBST(HAVE_PRIVATE_HOME)

	HAVE_CHROOT=""
	AC_SUBST(HAVE_CHROOT)

	HAVE_GLOBALCFG=""
	AC_SUBST(HAVE_GLOBALCFG)

	HAVE_USERNS=""
	AC_SUBST(HAVE_USERNS)

	HAVE_X11=""
	AC_SUBST(HAVE_X11)

	HAVE_FILE_TRANSFER=""
	AC_SUBST(HAVE_FILE_TRANSFER)

	HAVE_SUID="yes"
	AC_SUBST(HAVE_SUID)

	BUSYBOX_WORKAROUND="no"
	AC_SUBST(BUSYBOX_WORKAROUND)

	HAVE_CONTRIB_INSTALL="no",
	AC_SUBST(HAVE_CONTRIB_INSTALL)
])




# checking pthread library
AC_CHECK_LIB([pthread], [main], [], AC_MSG_ERROR([*** POSIX thread support not installed ***]))
AC_CHECK_HEADER(pthread.h,,AC_MSG_ERROR([*** POSIX thread support not installed ***]))
AC_CHECK_HEADER([linux/seccomp.h],,AC_MSG_ERROR([*** SECCOMP support is not installed (/usr/include/linux/seccomp.h missing) ***]))

# set sysconfdir
if test "$prefix" = /usr; then
	test "$sysconfdir" = '${prefix}/etc' && sysconfdir="/etc"
fi

AC_CONFIG_FILES([mkdeb.sh], [chmod +x mkdeb.sh])
AC_CONFIG_FILES([Makefile src/common.mk src/lib/Makefile src/fcopy/Makefile src/fnet/Makefile src/firejail/Makefile src/fnetfilter/Makefile \
src/firemon/Makefile src/libtrace/Makefile src/libtracelog/Makefile src/firecfg/Makefile src/fbuilder/Makefile src/fsec-print/Makefile \
src/ftee/Makefile src/fseccomp/Makefile src/fldd/Makefile src/libpostexecseccomp/Makefile src/fsec-optimize/Makefile \
src/profstats/Makefile src/man/Makefile src/zsh_completion/Makefile src/bash_completion/Makefile test/Makefile \
src/jailcheck/Makefile])
AC_OUTPUT

cat <<EOF

Configuration options:
   prefix: $prefix
   sysconfdir: $sysconfdir
   apparmor: $HAVE_APPARMOR
   SELinux labeling support: $HAVE_SELINUX
   global config: $HAVE_GLOBALCFG
   chroot: $HAVE_CHROOT
   network: $HAVE_NETWORK
   user namespace: $HAVE_USERNS
   X11 sandboxing support: $HAVE_X11
   whitelisting: $HAVE_WHITELIST
   private home support: $HAVE_PRIVATE_HOME
   file transfer support: $HAVE_FILE_TRANSFER
   overlayfs support: $HAVE_OVERLAYFS
   DBUS proxy support: $HAVE_DBUSPROXY
   allow tmpfs as regular user: $HAVE_USERTMPFS
   enable --ouput logging: $HAVE_OUTPUT
   Manpage support: $HAVE_MAN
   firetunnel support: $HAVE_FIRETUNNEL
   busybox workaround: $BUSYBOX_WORKAROUND
   Spectre compiler patch: $HAVE_SPECTRE
   EXTRA_LDFLAGS: $EXTRA_LDFLAGS
   EXTRA_CFLAGS: $EXTRA_CFLAGS
   fatal warnings: $HAVE_FATAL_WARNINGS
   Gcov instrumentation: $HAVE_GCOV
   Install contrib scripts: $HAVE_CONTRIB_INSTALL
   Install as a SUID executable: $HAVE_SUID
   LTS: $HAVE_LTS
   Always enforce filters: $HAVE_FORCE_NONEWPRIVS

EOF

if test "$HAVE_LTS" = -DHAVE_LTS; then
	cat <<\EOF


*********************************************************
*    Warning: Long-term support (LTS) was enabled!      *
*    Most compile-time options have bean rewritten!     *
*********************************************************


EOF
fi