configure.ac

AC_PREREQ([2.59])
AC_INIT([Flytrap], [1.20181115], [d.e.smorgrav@usit.uio.no],
    [flytrap], [https://www.github.com/unioslo/flytrap])
AC_CONFIG_SRCDIR([sbin/flytrap/flytrap.c])
AC_CONFIG_MACRO_DIR([m4])
AM_INIT_AUTOMAKE([foreign])
AM_CONFIG_HEADER(include/config.h)

############################################################################
#
# Toolchain
#

# C compiler and features
AC_LANG(C)
AC_PROG_CC
AC_PROG_CC_STDC
AC_PROG_CPP
AC_GNU_SOURCE
AC_C_CONST
AC_C_RESTRICT
AC_C_VOLATILE

# other programs
AC_PROG_INSTALL
AC_PROG_RANLIB
AC_PROG_SED
AC_PATH_PROGS([Z], [xz bzip2 gzip])
AC_PATH_PROGS([UNZ], [unxz bunzip2 gunzip])
case ${ac_cv_path_Z##*/} in
xz)
	AC_SUBST([ZEXT], [.xz])
	;;
bzip2)
	AC_SUBST([ZEXT], [.bz2])
	;;
gzip)
	AC_SUBST([ZEXT], [.gz])
	;;
esac
AX_PROG_PKG_CONFIG

############################################################################
#
# Headers and functions
#

AC_CHECK_HEADERS([endian.h sys/endian.h])
AX_GCC_BUILTIN([__builtin_bswap16])
AX_GCC_BUILTIN([__builtin_bswap32])
AX_GCC_BUILTIN([__builtin_bswap64])
AC_CHECK_DECLS([
    bswap16, bswap32, bswap64,
    be16enc, be16dec, le16enc, le16dec,
    be32enc, be32dec, le32enc, le32dec,
    be64enc, be64dec, le64enc, le64dec,
    htobe16, be16toh, htole16, le16toh,
    htobe32, be32toh, htole32, le32toh,
    htobe64, be64toh, htole64, le64toh,
    nothing
], [], [], [[
#if HAVE_SYS_ENDIAN_H
#include <sys/endian.h>
#endif
#if HAVE_ENDIAN_H
#include <endian.h>
#endif
]])
AC_CHECK_FUNCS([strlcat strlcmp strlcpy])
AC_CHECK_HEADERS([sys/socket.h netinet/in.h])
AC_CHECK_MEMBERS([struct sockaddr_in.sin_len], [], [], [[
#if HAVE_SYS_SOCKET_H
#include <sys/socket.h>
#endif
#if HAVE_NETINET_IN_H
#include <netinet/in.h>
#endif
]])
AC_CHECK_HEADERS([pcap.h pcap/pcap.h])

############################################################################
#
# Extra libraries
#

# libpcap
save_LIBS="${LIBS}"
LIBS=""
AC_SEARCH_LIBS([pcap_open_live], [pcap])
LIBPCAP="${LIBS}"
LIBS="${save_LIBS}"
AC_SUBST(LIBPCAP)

# cryb-test
AX_PKG_CONFIG_CHECK([cryb-test], [],
  [AC_MSG_NOTICE([Cryb test framework found, unit tests enabled.])],
  [AC_MSG_WARN([Cryb test framework not found, unit tests disabled.])])

############################################################################
#
# Options
#

ft_default_csvfile="/var/log/flytrap.csv"
AC_ARG_WITH([csvfile],
    AS_HELP_STRING([--with-csvfile],
        [use specified log file (default is $default_csvfile)]),
    [ft_csvfile="${withval:-${ft_default_csvfile}}"],
    [ft_csvfile="${ft_default_csvfile}"])
AS_IF([test x"$ft_csvfile" = x""], [
  AC_MSG_ERROR([--with-csvfile was given without an argument])
], [
  AC_MSG_NOTICE([will log to $ft_csvfile by default])
])
AC_DEFINE_UNQUOTED([FT_CSVFILE], ["$ft_csvfile"], [Default log file])
AC_SUBST([FT_CSVFILE], [$ft_csvfile])

AC_ARG_ENABLE([developer-warnings],
    AS_HELP_STRING([--enable-developer-warnings], [enable strict warnings (default is NO)]),
    [CFLAGS="${CFLAGS} -Wall -Wextra -Wcast-qual -Wshadow"])
AC_ARG_ENABLE([debugging-symbols],
    AS_HELP_STRING([--enable-debugging-symbols], [enable debugging symbols (default is NO)]),
    [CFLAGS="${CFLAGS} -O0 -g -fno-inline"])
AC_ARG_ENABLE([werror],
    AS_HELP_STRING([--enable-werror], [use -Werror (default is NO)]),
    [CFLAGS="${CFLAGS} -Werror"])

############################################################################
#
# Output
#
AC_CONFIG_FILES([
    Makefile
    include/Makefile
    lib/Makefile
    lib/libft/Makefile
    bin/Makefile
    bin/fly/Makefile
    bin/ft2dshield/Makefile
    sbin/Makefile
    sbin/flytrap/Makefile
    sbin/flytrap/flytrap.8
    rc/Makefile
    rc/flytrap.init
    rc/flytrap.logrotate
    rc/flytrap.rc
    rc/flytrap.systemd
    t/Makefile
])
AC_OUTPUT