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dnl febootstrap configure.ac
dnl (C) Copyright 2009-2011 Red Hat Inc.
dnl
dnl This program is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU General Public License as published by
dnl the Free Software Foundation; either version 2 of the License, or
dnl (at your option) any later version.
dnl
dnl This program is distributed in the hope that it will be useful,
dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
dnl GNU General Public License for more details.
dnl
dnl You should have received a copy of the GNU General Public License
dnl along with this program; if not, write to the Free Software
dnl Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
dnl
dnl Written by Richard W.M. Jones <rjones@redhat.com>

AC_INIT([febootstrap],[3.19])
AM_INIT_AUTOMAKE

dnl Check for basic C environment.
AC_PROG_CC_STDC
gl_EARLY

AC_PROG_INSTALL
AC_PROG_CPP

AC_C_PROTOTYPES
test "x$U" != "x" && AC_MSG_ERROR([Compiler not ANSI compliant])

AM_PROG_CC_C_O

dnl Check support for 64 bit file offsets.
AC_SYS_LARGEFILE

gl_INIT

# Define $(SED).
m4_ifdef([AC_PROG_SED],[
    AC_PROG_SED
],[
    dnl ... else hope for the best
    AC_SUBST([SED], "sed")
])

# OCaml and ocamlfind are required to compile.
AC_PROG_OCAML
if test "$OCAMLC" = "no"; then
    AC_MSG_ERROR([You must install the OCaml compiler])
fi
AM_CONDITIONAL([HAVE_OCAMLOPT],[test "$OCAMLBEST" = "opt"])
AC_PROG_FINDLIB
if test "$OCAMLFIND" = "no"; then
    AC_MSG_ERROR([You must install OCaml findlib (the ocamlfind command)])
fi

dnl Optional programs.
AC_CHECK_PROG(PERLDOC,[perldoc],[perldoc],[no])
if test "x$PERLDOC" = "xno" ; then
  AC_MSG_WARN([perldoc not found - install perl to make man pages])
fi
AM_CONDITIONAL(HAVE_PERLDOC,[test "$perldoc" != "no"])

dnl For yum-rpm handler.
AC_CHECK_PROG(YUM,[yum],[yum],[no])
AC_CHECK_PROG(RPM,[rpm],[rpm],[no])
AC_CHECK_PROG(YUMDOWNLOADER,[yumdownloader],[yumdownloader],[no])

dnl For Debian handler.
AC_CHECK_PROG(APTITUDE,[aptitude],[aptitude],[no])
AC_CHECK_PROG(APT_CACHE,[apt-cache],[apt-cache],[no])
AC_CHECK_PROG(DPKG,[dpkg],[dpkg],[no])

dnl Include workaround for broken apt-cache depends --recurse (Ubuntu 10.04)?
if test "x$APT_CACHE" != "xno"; then
    AC_MSG_CHECKING([if apt-cache depends --recurse is broken])
    if ! $APT_CACHE depends --recurse -i bash | grep -q '^libc6$'; then
        AC_MSG_RESULT([yes])
        APT_CACHE_DEPENDS_RECURSE_BROKEN=true
    else
        AC_MSG_RESULT([no])
        APT_CACHE_DEPENDS_RECURSE_BROKEN=false
    fi
else
    APT_CACHE_DEPENDS_RECURSE_BROKEN=false
fi
AC_SUBST([APT_CACHE_DEPENDS_RECURSE_BROKEN])

dnl For ArchLinux handler.
AC_CHECK_PROG(PACMAN,[pacman],[pacman],[no])

dnl Support for gzipped kernel modules.
AC_CHECK_LIB([z],[gzopen])

dnl mke2fs.
AC_PATH_PROG([MKE2FS],[mke2fs],[no],
             [$PATH$PATH_SEPARATOR/sbin$PATH_SEPARATOR])
if test "x$MKE2FS" = "xno" ; then
  AC_MSG_FAILURE([mke2fs program not found])
fi
AC_DEFINE_UNQUOTED([MKE2FS],["$MKE2FS"],
  [Full path to the mke2fs program.])

dnl RHEL 5 mke2fs needed -T <fs> instead of -t <fs>. Unhelpfully
dnl the --help output doesn't mention this, so we have to test it.
AC_MSG_CHECKING([$MKE2FS -t or -T])
rm -f conftest.img
dd if=/dev/zero of=conftest.img bs=1024 count=1024 >&AS_MESSAGE_LOG_FD 2>&1
if $MKE2FS -t ext2 -F -q conftest.img >&AS_MESSAGE_LOG_FD 2>&1 ; then
  MKE2FS_T_OPTION=-t
elif $MKE2FS -T ext2 -F -q conftest.img >&AS_MESSAGE_LOG_FD 2>&1 ; then
  MKE2FS_T_OPTION=-T
else
  AC_MSG_ERROR([$MKE2FS cannot create filesystems])
fi
rm conftest.img
AC_MSG_RESULT([$MKE2FS_T_OPTION])
AC_DEFINE_UNQUOTED([MKE2FS_T_OPTION],["$MKE2FS_T_OPTION"],
  [mke2fs option used to specify filesystem type (usually "-t")])

dnl ext2fs, com_err.
PKG_CHECK_MODULES([EXT2FS], [ext2fs])
PKG_CHECK_MODULES([COM_ERR], [com_err])

dnl Optional ext2fs_close2 function.
old_LIBS="$LIBS"
LIBS="$EXT2FS_LIBS $COM_ERR_LIBS"
AC_CHECK_FUNCS([ext2fs_close2])
LIBS="$old_LIBS"

dnl GNU awk.
AC_CHECK_PROG(GAWK,[gawk],[gawk],[no])
if test "x$GAWK" = "xno" ; then
  AC_MSG_FAILURE([gawk (GNU awk) not found])
fi

AC_CONFIG_HEADERS([config.h])
AC_CONFIG_FILES([Makefile
        debian/changelog
        helper/Makefile
        lib/Makefile
        src/config.ml
        src/Makefile])
AC_OUTPUT
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