tree: More elegantly prevent deleting the root node

[people/ms/libloc.git] / configure.ac

AC_PREREQ(2.60)
AC_INIT([libloc],
        [0.9.16],
        [location@lists.ipfire.org],
        [libloc],
        [https://location.ipfire.org/])

AC_CONFIG_SRCDIR([src/libloc.c])
AC_CONFIG_AUX_DIR([build-aux])
AM_INIT_AUTOMAKE([
	foreign
	1.11
	-Wall
	-Wno-portability
	silent-rules
	tar-pax
	no-dist-gzip
	dist-xz
	subdir-objects
])
AC_PROG_CC
AC_USE_SYSTEM_EXTENSIONS
AC_SYS_LARGEFILE
AC_CONFIG_MACRO_DIR([m4])
AM_SILENT_RULES([yes])
LT_INIT([
	disable-static
	pic-only
])
AC_PREFIX_DEFAULT([/usr])
gl_LD_VERSION_SCRIPT

IT_PROG_INTLTOOL([0.40.0])

# Interpret embedded Python in HTML files
XGETTEXT="${XGETTEXT} -L Python --keyword=_:1,2 --keyword=N_:1,2 --no-location"

GETTEXT_PACKAGE=${PACKAGE_TARNAME}
AC_SUBST(GETTEXT_PACKAGE)

AC_PROG_SED
AC_PROG_MKDIR_P

# - man ------------------------------------------------------------------------

have_man_pages=no
AC_ARG_ENABLE(man_pages, AS_HELP_STRING([--disable-man-pages],
	[do not install man pages]))
AS_IF([test "x$enable_man_pages" != xno], [have_man_pages=yes])
AM_CONDITIONAL(ENABLE_MAN_PAGES, [test "x$have_man_pages" = "xyes"])

AC_PATH_PROG([XSLTPROC], [xsltproc])

AC_CHECK_PROGS(ASCIIDOC, [asciidoc])
if test "${have_man_pages}" = "yes" && test -z "${ASCIIDOC}"; then
	AC_MSG_ERROR([Required program 'asciidoc' not found])
fi

# - pkg-config -----------------------------------------------------------------

m4_ifndef([PKG_PROG_PKG_CONFIG],
	[m4_fatal([Could not locate the pkg-config autoconf
		macros. These are usually located in /usr/share/aclocal/pkg.m4.
		If your macros are in a different location, try setting the
		environment variable AL_OPTS="-I/other/macro/dir" before running
		./autogen.sh or autoreconf again. Make sure pkg-config is installed.])])

PKG_PROG_PKG_CONFIG
PKG_INSTALLDIR(['${usrlib_execdir}/pkgconfig'])

# - bash-completion ------------------------------------------------------------

#enable_bash_completion=yes
AC_ARG_WITH([bashcompletiondir],
	AS_HELP_STRING([--with-bashcompletiondir=DIR], [Bash completions directory]),
	[],
	[AS_IF([`$PKG_CONFIG --exists bash-completion`], [
		with_bashcompletiondir=`$PKG_CONFIG --variable=completionsdir bash-completion`
	], [
		with_bashcompletiondir=${datadir}/bash-completion/completions
	])
])

AC_SUBST([bashcompletiondir], [$with_bashcompletiondir])

AC_ARG_ENABLE([bash-completion],
	AS_HELP_STRING([--disable-bash-completion], [do not install bash completion files]),
	[], [enable_bash_completion=yes]
)

AM_CONDITIONAL([BUILD_BASH_COMPLETION], [test "x$enable_bash_completion" = xyes])

# - debug ----------------------------------------------------------------------

AC_ARG_ENABLE([debug],
        AS_HELP_STRING([--enable-debug], [enable debug messages @<:@default=disabled@:>@]),
        [], [enable_debug=no])
AS_IF([test "x$enable_debug" = "xyes"], [
        AC_DEFINE(ENABLE_DEBUG, [1], [Debug messages.])
])

AC_CHECK_HEADERS_ONCE([
	arpa/inet.h \
	arpa/nameser.h \
	arpa/nameser_compat.h \
	endian.h \
	netinet/in.h \
    resolv.h \
	string.h \
])

AC_CHECK_FUNCS([ \
    be16toh \
    be32toh \
    be64toh \
    htobe16 \
    htobe32 \
    htobe64 \
    madvise \
    mmap \
    munmap \
    res_query \
	__secure_getenv \
	secure_getenv \
    qsort \
])

my_CFLAGS="\
-Wall \
-Wchar-subscripts \
-Wformat-security \
-Wmissing-declarations \
-Wmissing-prototypes \
-Wnested-externs \
-Wpointer-arith \
-Wshadow \
-Wsign-compare \
-Wstrict-prototypes \
-Wtype-limits \
"
AC_SUBST([my_CFLAGS])
AC_SUBST([my_LDFLAGS])

# Enable -fanalyzer if requested
AC_ARG_ENABLE([analyzer],
	AS_HELP_STRING([--enable-analyzer], [enable static analyzer (-fanalyzer) @<:@default=disabled@:>@]),
	[], [enable_analyzer=no])
AS_IF([test "x$enable_analyzer" = "xyes"],
	CC_CHECK_FLAGS_APPEND([my_CFLAGS], [CFLAGS], [-fanalyzer])
)

# Enable -fno-semantic-interposition (if available)
CC_CHECK_FLAGS_APPEND([my_CFLAGS], [CFLAGS], [-fno-semantic-interposition])
CC_CHECK_FLAGS_APPEND([my_LDFLAGS], [LDFLAGS], [-fno-semantic-interposition])

# ------------------------------------------------------------------------------

AC_ARG_WITH([database-path],
	AS_HELP_STRING([--with-database-path], [The default database path]),
	[], [with_database_path=/var/lib/location/database.db]
)

if test -z "${with_database_path}"; then
	AC_MSG_ERROR([The default database path is empty])
fi

AC_DEFINE_UNQUOTED([LIBLOC_DEFAULT_DATABASE_PATH], ["${with_database_path}"],
	[The default path for the database])
AC_SUBST([DEFAULT_DATABASE_PATH], [${with_database_path}])

AC_ARG_WITH([systemd],
	AS_HELP_STRING([--with-systemd], [Enable systemd support.])
)

AS_IF([test "x$with_systemd" != "xno"],
      [PKG_CHECK_MODULES(systemd, [libsystemd],
      [have_systemd=yes], [have_systemd=no])],
      [have_systemd=no]
)

AS_IF([test "x$have_systemd" = "xyes"],
      [AC_MSG_CHECKING([for systemd system unit directory])
	AC_ARG_WITH([systemdsystemunitdir],
		AS_HELP_STRING([--with-systemdsystemunitdir=DIR], [Directory for systemd service files]),
		[], [with_systemdsystemunitdir=$($PKG_CONFIG --variable=systemdsystemunitdir systemd)]
	)

	AC_SUBST([systemdsystemunitdir], [$with_systemdsystemunitdir])

	if test -n "$systemdsystemunitdir" -a "x$systemdsystemunitdir" != xno; then
		AC_MSG_RESULT([$systemdsystemunitdir])
	else
		AC_MSG_ERROR([not found (try --with-systemdsystemunitdir)])
	fi
      ],
      [AS_IF([test "x$with_systemd" = "xyes"],
             [AC_MSG_ERROR([Systemd support is enabled but no systemd has been found.])
      ])
])

AM_CONDITIONAL(HAVE_SYSTEMD, [test "x$have_systemd" = "xyes"])

# ------------------------------------------------------------------------------

# Python
AM_PATH_PYTHON([3.4])
PKG_CHECK_MODULES([PYTHON], [python-${PYTHON_VERSION}])

# Perl
AC_PATH_PROG(PERL, perl, no)
AC_SUBST(PERL)

AX_PROG_PERL_MODULES(Config ExtUtils::MakeMaker,, AC_MSG_WARN(Need some Perl modules))

AC_ARG_ENABLE(perl, AS_HELP_STRING([--disable-perl], [do not build the perl modules]), [],[enable_perl=yes])
AM_CONDITIONAL(ENABLE_PERL, test "$enable_perl" = "yes")
AS_IF([test "$enable_perl" = "yes"],
      [
       PERL_MODPATH=$($PERL -MConfig -e 'print $Config{installvendorarch}')
       PERL_MANPATH=$($PERL -MConfig -e 'print $Config{installvendorman3dir}')
       AC_SUBST(PERL_MODPATH)
       AC_SUBST(PERL_MANPATH)
       ],
)

dnl Checking for libresolv
case "${host}" in
	*-gnu*)
		AC_CHECK_LIB(resolv, ns_msg_getflag, [LIBS="-lresolv $LIBS"], AC_MSG_ERROR([libresolv has not been found]), -lresolv)
		;;
	*)
		AC_CHECK_LIB(resolv, res_init, [LIBS="-lresolv $LIBS"], AC_MSG_ERROR([libresolv has not been found]), -lresolv)
		;;
esac
RESOLV_LIBS="${LIBS}"
AC_SUBST(RESOLV_LIBS)

dnl Checking for OpenSSL
LIBS=
AC_CHECK_LIB(crypto, EVP_EncryptInit,, AC_MSG_ERROR([libcrypto has not been found]))
OPENSSL_LIBS="${LIBS}"
AC_SUBST(OPENSSL_LIBS)

AC_CONFIG_HEADERS(config.h)
AC_CONFIG_FILES([
        Makefile
        po/Makefile.in
])

AC_OUTPUT
AC_MSG_RESULT([
        $PACKAGE $VERSION
        =====

        prefix:                 ${prefix}
        sysconfdir:             ${sysconfdir}
        libdir:                 ${libdir}
        includedir:             ${includedir}

        compiler:               ${CC}
        cflags:                 ${CFLAGS}
        ldflags:                ${LDFLAGS}

        database path:          ${with_database_path}
        debug:                  ${enable_debug}
        systemd support:        ${have_systemd}
	bash-completion:        ${enable_bash_completion}

	Bindings:
	  Perl:			${enable_perl}
	  Perl module path:     ${PERL_MODPATH}
	  Perl manual path:     ${PERL_MANPATH}
])