AC_PREREQ([2.63])
AC_INIT([bubblewrap], [0.4.0], [atomic-devel@projectatomic.io])
AC_CONFIG_HEADER([config.h])
AC_CONFIG_MACRO_DIR([m4])
AC_CONFIG_AUX_DIR([build-aux])

AC_USE_SYSTEM_EXTENSIONS

AM_INIT_AUTOMAKE([1.11 -Wno-portability foreign no-define tar-ustar no-dist-gzip dist-xz])
AM_MAINTAINER_MODE([enable])
AM_SILENT_RULES([yes])

AC_SYS_LARGEFILE

AC_PROG_CC
AM_PROG_CC_C_O

AC_CHECK_HEADERS([sys/capability.h], [], [AC_MSG_ERROR([*** POSIX caps headers not found])])

AC_ARG_ENABLE(man,
              [AS_HELP_STRING([--enable-man],
                              [generate man pages [default=auto]])],,
              enable_man=maybe)

AS_IF([test "$enable_man" != no], [
  AC_PATH_PROG([XSLTPROC], [xsltproc], [])
  AS_IF([test -z "$XSLTPROC"], [
    AS_IF([test "$enable_man" = yes], [
      AC_MSG_ERROR([xsltproc is required for --enable-man])
    ])
    enable_man=no
  ], [
    enable_man=yes
  ])
])
AM_CONDITIONAL(ENABLE_MAN, test "$enable_man" != no)

AC_ARG_WITH([bash-completion-dir],
    AS_HELP_STRING([--with-bash-completion-dir[=PATH]],
        [Install the bash auto-completion script in this directory. @<:@default=yes@:>@]),
    [],
    [with_bash_completion_dir=yes])

if test "x$with_bash_completion_dir" = "xyes"; then
    PKG_CHECK_MODULES([BASH_COMPLETION], [bash-completion >= 2.0],
        [BASH_COMPLETION_DIR="`pkg-config --variable=completionsdir bash-completion`"],
        [BASH_COMPLETION_DIR="$datadir/bash-completion/completions"])
else
    BASH_COMPLETION_DIR="$with_bash_completion_dir"
fi

AC_SUBST([BASH_COMPLETION_DIR])
AM_CONDITIONAL([ENABLE_BASH_COMPLETION],[test "x$with_bash_completion_dir" != "xno"])
# ------------------------------------------------------------------------------
have_selinux=no
AC_ARG_ENABLE(selinux, AS_HELP_STRING([--disable-selinux], [Disable optional SELINUX support]))
if test "x$enable_selinux" != "xno"; then
        PKG_CHECK_MODULES([SELINUX], [libselinux >= 2.1.9],
                [AC_DEFINE(HAVE_SELINUX, 1, [Define if SELinux is available])
                 have_selinux=yes
                 M4_DEFINES="$M4_DEFINES -DHAVE_SELINUX"],
                [have_selinux=no])
        if test "x$have_selinux" = xno -a "x$enable_selinux" = xyes; then
                AC_MSG_ERROR([*** SELinux support requested but libraries not found])
        fi
fi
AM_CONDITIONAL(HAVE_SELINUX, [test "$have_selinux" = "yes"])

dnl Keep this in sync with ostree, except remove -Werror=declaration-after-statement
CC_CHECK_FLAGS_APPEND([WARN_CFLAGS], [CFLAGS], [\
        -pipe \
        -Wall \
	-Werror=empty-body \
	-Werror=strict-prototypes \
	-Werror=missing-prototypes \
	-Werror=implicit-function-declaration \
        "-Werror=format=2 -Werror=format-security -Werror=format-nonliteral" \
	-Werror=pointer-arith -Werror=init-self \
        -Werror=missing-declarations \
        -Werror=return-type \
        -Werror=overflow \
        -Werror=int-conversion \
        -Werror=parenthesis \
        -Werror=incompatible-pointer-types \
        -Werror=misleading-indentation \
	-Werror=missing-include-dirs -Werror=aggregate-return \
])
AC_SUBST(WARN_CFLAGS)

AC_CHECK_LIB(cap, cap_from_text)

if test "$ac_cv_lib_cap_cap_from_text" != "yes"; then
            AC_MSG_ERROR([*** libcap requested but not found])
fi

AC_ARG_WITH(priv-mode,
            AS_HELP_STRING([--with-priv-mode=setuid/none],
                           [How to set privilege-raising during make install]),
            [],
            [with_priv_mode="none"])

AM_CONDITIONAL(PRIV_MODE_SETUID, test "x$with_priv_mode" = "xsetuid")

AC_ARG_ENABLE(sudo,
              AS_HELP_STRING([--enable-sudo],[Use sudo to set privileged mode on binaries during install (only needed if --with-priv-mode used)]),
              [SUDO_BIN="sudo"], [SUDO_BIN=""])
AC_SUBST([SUDO_BIN])

AC_ARG_ENABLE(require-userns,
            AS_HELP_STRING([--enable-require-userns=yes/no (default no)],
                           [Require user namespaces by default when installed suid]),
            [],
            [enable_require_userns="no"])

AS_IF([ test "x$enable_require_userns" = "xyes" ], [
        AC_DEFINE(ENABLE_REQUIRE_USERNS, 1, [Define if userns should be used by default in suid mode])
     ])

AC_PROG_AWK
AC_REQUIRE_AUX_FILE([tap-driver.sh])

AC_CONFIG_FILES([
Makefile
])
AC_OUTPUT

echo "
    bubblewrap $VERSION
    ===================

    man pages (xsltproc):                         $enable_man
    SELinux:                                      $have_selinux
    setuid mode on make install:                  $with_priv_mode
    require default userns:                       $enable_require_userns
    mysteriously satisfying to pop:               yes"
echo ""