dnl
dnl Configure template for GNUPG
dnl
dnl (Process this file with autoconf to produce a configure script.)
AC_REVISION($Revision$)dnl

dnl Must reset CDPATH so that bash's cd does not print to stdout
CDPATH=

AC_INIT(g10/g10.c)
AC_CONFIG_AUX_DIR(scripts)
AM_CONFIG_HEADER(config.h)


VERSION=`cat $srcdir/VERSION`
PACKAGE=gnupg
ALL_LINGUAS="de es_ES fr it pl pt_BR ru"
static_modules="sha1 md5 rmd160"
AC_SUBST(VERSION)
AC_SUBST(PACKAGE)
AC_DEFINE_UNQUOTED(VERSION, "$VERSION")
AC_DEFINE_UNQUOTED(PACKAGE, "$PACKAGE")

MODULES_IN_CIPHER=`awk '/# MODULES: / { for(i=3;i<=NF;i++) print $i}' \
                                                $srcdir/cipher/Makefile.am`

AC_MSG_CHECKING([whether use of /dev/random is requested])
AC_ARG_ENABLE(dev-random,
[  --disable-dev-random    disable the use of dev random],
    try_dev_random=$enableval, try_dev_random=yes)
AC_MSG_RESULT($try_dev_random)

AC_MSG_CHECKING([whether use of extensions is requested])
AC_ARG_ENABLE(dynload,
[  --disable-dynload       disable use of extensions],
    try_dynload=$enableval, try_dynload=yes)
AC_MSG_RESULT($try_dynload)

AC_MSG_CHECKING([whether assembler modules are requested])
AC_ARG_ENABLE(asm,
[  --disable-asm           do not use assembler modules],
     try_asm_modules=$enableval, try_asm_modules=yes)
AC_MSG_RESULT($try_asm_modules)

AC_MSG_CHECKING([whether memory debugging is requested])
AC_ARG_ENABLE(m-debug,
[  --enable-m-debug        enable debugging of memory allocation],
use_m_debug=$enableval, use_m_debug=no)
AC_MSG_RESULT($use_m_debug)
if test "$use_m_debug" = yes; then
    AC_DEFINE(M_DEBUG)
    use_m_guard=yes
else
    AC_MSG_CHECKING([whether memory guard is requested])
    AC_ARG_ENABLE(m-guard,
    [  --enable-m-guard        enable memory guard facility],
    use_m_guard=$enableval, use_m_guard=no)
    AC_MSG_RESULT($use_m_guard)
fi
if test "$use_m_guard" = yes ; then
    AC_DEFINE(M_GUARD)
fi


AC_MSG_CHECKING([whether included zlib is requested])
AC_ARG_WITH(included-zlib,
    [  --with-included-zlib    use the zlib code included here],
[g10_force_zlib=yes], [g10_force_zlib=no] )
AC_MSG_RESULT($g10_force_zlib)

dnl Checks for programs.

AC_CANONICAL_SYSTEM
AC_ARG_PROGRAM
AC_PROG_MAKE_SET
AM_SANITY_CHECK
missing_dir=`cd $ac_aux_dir && pwd`
AM_MISSING_PROG(ACLOCAL, aclocal, $missing_dir)
AM_MISSING_PROG(AUTOCONF, autoconf, $missing_dir)
AM_MISSING_PROG(AUTOMAKE, automake, $missing_dir)
AM_MISSING_PROG(AUTOHEADER, autoheader, $missing_dir)
dnl AM_MISSING_PROG(MAKEINFO, makeinfo, $missing_dir)
AC_PROG_CC
AC_PROG_CPP
AC_ISC_POSIX
AC_PROG_RANLIB
AC_PROG_INSTALL
dnl AC_CYGWIN32


MPI_OPT_FLAGS=""
if test "$GCC" = yes; then
    CFLAGS="$CFLAGS -Wall"
    dnl Always enable optimazation in MPI
    if echo "$CFLAGS" | grep "-O" >/dev/null ; then
        :
    else
        MPI_OPT_FLAGS=-O2
    fi
fi


try_gettext=yes
try_gdbm=yes
case "${target}" in
    i386--mingw32)
        # special stuff for Windoze NT
        cross_compiling=yes
        CC="i386--mingw32-gcc"
        CPP="i386--mingw32-gcc -E"
        RANLIB="i386--mingw32-ranlib"
        ac_cv_have_dev_random=no
        AC_DEFINE(USE_ONLY_8DOT3)
        AC_DEFINE(HAVE_DRIVE_LETTERS)
        AC_DEFINE(HAVE_DOSISH_SYSTEM)
        try_gettext="no"
        try_gdbm="no"
        ;;
    i386-emx-os2)
        # OS/2 with the EMX environment
        ac_cv_have_dev_random=no
        AC_DEFINE(HAVE_DRIVE_LETTERS)
        AC_DEFINE(HAVE_DOSISH_SYSTEM)
        try_gettext="no"
        try_gdbm="no"
        ;;
    *-*-hpux*)
        if test -z "$GCC" ; then
            CFLAGS="$CFLAGS -Ae -D_HPUX_SOURCE"
        fi
        ;;
    m68k-atari-mint)
        ;;
    *)
       ;;
esac

AC_SUBST(MPI_OPT_FLAGS)

GNUPG_CHECK_PIC
GNUPG_CHECK_RDYNAMIC
if test "$NO_PIC" = yes; then
    try_dynload=no
fi


case "${target}" in
    i386--mingw32)
        PRINTABLE_OS_NAME="MingW32"
        ;;
    i386-emx-os2)
        PRINTABLE_OS_NAME="OS/2"
        ;;
    *-linux*)
        PRINTABLE_OS_NAME="GNU/Linux"
        ;;
    *)
        PRINTABLE_OS_NAME=`uname -s || echo "Unknown"`
        ;;
esac
AC_DEFINE_UNQUOTED(PRINTABLE_OS_NAME, "$PRINTABLE_OS_NAME")

dnl  Fixme: Are these the best flags for OpenBSD????
case "${target}" in
    *-openbsd*)
        NAME_OF_DEV_RANDOM="/dev/srandom"
        NAME_OF_DEV_URANDOM="/dev/urandom"
        DYNLINK_MOD_CFLAGS="-shared -rdynamic -fpic -Wl,-Bshareable -Wl,-x"
        ;;
    *)
        NAME_OF_DEV_RANDOM="/dev/random"
        NAME_OF_DEV_URANDOM="/dev/urandom"
        DYNLINK_MOD_CFLAGS="-shared $CFLAGS_PIC -lc"
        ;;
esac
AC_DEFINE_UNQUOTED(NAME_OF_DEV_RANDOM, "$NAME_OF_DEV_RANDOM")
AC_DEFINE_UNQUOTED(NAME_OF_DEV_URANDOM, "$NAME_OF_DEV_URANDOM")
AC_SUBST(MPI_OPT_FLAGS)


dnl Checks for libraries.

if test "$try_gettext" = yes; then
AM_GNU_GETTEXT
fi

if test "$try_gdbm" = yes; then
AC_CHECK_LIB(gdbm,gdbm_firstkey)
fi


if test "$try_dynload" = yes ; then
  AC_CHECK_LIB(dl,dlopen)
  if test "$ac_cv_lib_dl_dlopen" = "yes"; then
    AC_DEFINE(USE_DYNAMIC_LINKING)
    AC_DEFINE(HAVE_DL_DLOPEN)
    DYNLINK_LDFLAGS="$CFLAGS_RDYNAMIC"
    use_gnupg_extensions=yes
  else
    AC_CHECK_LIB(c,dlopen)
    if test "$ac_cv_lib_c_dlopen" = "yes"; then
      AC_DEFINE(USE_DYNAMIC_LINKING)
      AC_DEFINE(HAVE_DL_DLOPEN)
      DYNLINK_LDFLAGS="$CFLAGS_RDYNAMIC"
      dnl fixme: this is probably false but it should
      dnl work for freebsd
      AC_DEFINE(DLSYM_NEEDS_UNDERSCORE)
      use_gnupg_extensions=yes
    else
      AC_CHECK_LIB(dld,dld_link)
      if test "$ac_cv_lib_dld_dld_link" = "yes"; then
        AC_DEFINE(USE_DYNAMIC_LINKING)
        AC_DEFINE(HAVE_DLD_DLD_LINK)
        DYNLINK_LDFLAGS="$CFLAGS_RDYNAMIC"
        use_gnupg_extensions=yes
      fi
    fi
  fi
else
  AC_MSG_CHECKING(for dynamic loading)
  DYNLINK_LDFLAGS=
  DYNLINK_MOD_CFLAGS=
  use_gnupg_extensions=no
  AC_MSG_RESULT(has been disabled)
fi

AM_CONDITIONAL(ENABLE_GNUPG_EXTENSIONS, test "$use_gnupg_extensions" = yes )
AC_SUBST(DYNLINK_LDFLAGS)
AC_SUBST(DYNLINK_MOD_CFLAGS)


dnl Checks for header files.
AC_HEADER_STDC
AC_CHECK_HEADERS(unistd.h)


dnl Checks for typedefs, structures, and compiler characteristics.
AC_C_CONST
AC_C_INLINE
AC_TYPE_SIZE_T
AC_TYPE_SIGNAL
AC_DECL_SYS_SIGLIST

GNUPG_CHECK_ENDIAN


GNUPG_CHECK_TYPEDEF(byte, HAVE_BYTE_TYPEDEF)
GNUPG_CHECK_TYPEDEF(ushort, HAVE_USHORT_TYPEDEF)
GNUPG_CHECK_TYPEDEF(ulong, HAVE_ULONG_TYPEDEF)
GNUPG_CHECK_TYPEDEF(u16, HAVE_U16_TYPEDEF)
GNUPG_CHECK_TYPEDEF(u32, HAVE_U32_TYPEDEF)

AC_CHECK_SIZEOF(unsigned short, 2)
AC_CHECK_SIZEOF(unsigned int, 4)
AC_CHECK_SIZEOF(unsigned long, 4)

if test "$ac_cv_sizeof_unsigned_short" = "0" \
   || test "$ac_cv_sizeof_unsigned_int" = "0" \
   || test "$ac_cv_sizeof_unsigned_long" = "0"; then
    AC_MSG_WARN([Hmmm, something is wrong with the sizes - using defaults]);
fi



dnl Checks for library functions.
AC_FUNC_VPRINTF
AC_CHECK_FUNCS(strerror stpcpy strlwr tcgetattr rand strtoul mmap)
AC_CHECK_FUNCS(memmove gettimeofday getrusage gethrtime setrlimit)
AC_CHECK_FUNCS(memicmp atexit raise getpagesize strftime)

GNUPG_CHECK_MLOCK

GNUPG_CHECK_IPC
if test "$ac_cv_header_sys_shm_h" = "yes"; then
  AC_DEFINE(USE_SHM_COPROCESSING)
fi

dnl check whether we have a random device
if test "$try_dev_random" = yes ; then
AC_CACHE_CHECK(for random device, ac_cv_have_dev_random,
[if test -c "$NAME_OF_DEV_RANDOM" && test -c "$NAME_OF_DEV_URANDOM" ; then
  ac_cv_have_dev_random=yes; else ac_cv_have_dev_random=no; fi])
if test "$ac_cv_have_dev_random" = yes; then
    AC_DEFINE(HAVE_DEV_RANDOM)
fi
else
    AC_MSG_CHECKING(for random device)
    ac_cv_have_dev_random=no
    AC_MSG_RESULT(has been disabled)
fi


dnl
dnl Figure out the default linkage mode for cipher modules
dnl
dnl (We always need a static rmd160)
static_modules="$static_modules rmd160"
if test "$ac_cv_have_dev_random" = yes; then
    static_modules="$static_modules rndlinux"
else
    case "${target}" in
        i386--mingw32)
            static_modules="$static_modules rndw32"
            ;;
        i386-emx-os2)
            static_modules="$static_modules rndos2"
            ;;
        m68k-atari-mint)
            static_modules="$static_modules rndatari"
            ;;
        *)
            static_modules="$static_modules rndunix"
           ;;
    esac
fi

dnl
dnl Parse the modules list and build the list
dnl of static and dymically linked modules
dnl
STATIC_CIPHER_NAMES=""
STATIC_CIPHER_OBJS=""
DYNAMIC_CIPHER_MODS=""
GNUPG_MSG_PRINT([dynamically linked cipher modules:])
for name in $MODULES_IN_CIPHER; do
    x="no"
    for i in $static_modules; do
        if test "$name" = "$i" ; then
            x="yes"
        fi
    done;
    if test $x = yes; then
        STATIC_CIPHER_NAMES="$STATIC_CIPHER_NAMES $name"
        STATIC_CIPHER_OBJS="$STATIC_CIPHER_OBJS $name.o"
    else
        DYNAMIC_CIPHER_MODS="$DYNAMIC_CIPHER_MODS $name"
        GNUPG_MSG_PRINT([$name])
    fi
done
AC_MSG_RESULT()
AC_SUBST(STATIC_CIPHER_OBJS)
AC_SUBST(STATIC_CIPHER_NAMES)
AC_SUBST(DYNAMIC_CIPHER_MODS)

dnl
dnl And build the constructor file
dnl
cat <<EOF >cipher/construct.c
/* automatically generated by configure - do not edit */

EOF
GNUPG_MSG_PRINT([statically linked cipher modules:])
for name in $STATIC_CIPHER_NAMES; do
    echo "void ${name}_constructor(void);" >>cipher/construct.c
    GNUPG_MSG_PRINT([$name])
done
AC_MSG_RESULT()
cat <<EOF >>cipher/construct.c

void
cipher_modules_constructor(void)
{
    static int done = 0;
    if( done )
        return;
    done = 1;

EOF
for name in $STATIC_CIPHER_NAMES; do
    echo "   ${name}_constructor();" >>cipher/construct.c
done
echo '}' >>cipher/construct.c




dnl
dnl Figure how to link the cipher modules
dnl
dnl (form now these are only dynamic)
AC_SUBST(STATIC_CIPHER_OBJS)
AC_SUBST(DYNAMIC_CIPHER_MODS)



dnl setup assembler stuff
AC_MSG_CHECKING(for mpi assembler functions)
if test -f $srcdir/mpi/config.links ; then
    . $srcdir/mpi/config.links
    GNUPG_LINK_FILES($mpi_ln_src, $mpi_ln_dst)
    ac_cv_mpi_extra_asm_modules="$mpi_extra_modules"
    ac_cv_mpi_sflags="$mpi_sflags"
    ac_cv_mpi_config_done="yes"
    AC_MSG_RESULT(done)
else
    AC_MSG_RESULT(failed)
    AC_MSG_ERROR([mpi/config.links missing!])
fi
MPI_EXTRA_ASM_OBJS=""
if test "$ac_cv_mpi_extra_asm_modules" != ""; then
GNUPG_MSG_PRINT([mpi extra asm functions:])
for i in $ac_cv_mpi_extra_asm_modules; do
    GNUPG_MSG_PRINT([$i])
    MPI_EXTRA_ASM_OBJS="$MPI_EXTRA_ASM_OBJS $i.o"
done
AC_MSG_RESULT()
fi
AC_SUBST(MPI_EXTRA_ASM_OBJS)
MPI_SFLAGS="$ac_cv_mpi_sflags"
AC_SUBST(MPI_SFLAGS)

dnl Do we have zlib? Must do it here because Solaris failed
dnl when compiling a conftest (due to the "-lz" from LIBS).
if test "$g10_force_zlib" = "yes"; then
    ZLIBS="../zlib/libzlib.a"
    AM_CONDITIONAL(ENABLE_LOCAL_ZLIB, true)
    GNUPG_LINK_FILES(zlib/zlib.h, zlib.h )
    GNUPG_LINK_FILES(zlib/zconf.h, zconf.h )
else
AC_CHECK_HEADERS(zlib.h)
if test "$ac_cv_header_zlib_h" = yes ; then
    LIBS="$LIBS -lz"
    ZLIBS=
    AM_CONDITIONAL(ENABLE_LOCAL_ZLIB, false)
else
    ZLIBS="../zlib/libzlib.a"
    AM_CONDITIONAL(ENABLE_LOCAL_ZLIB, true)
    GNUPG_LINK_FILES(zlib/zlib.h, zlib.h )
    GNUPG_LINK_FILES(zlib/zconf.h, zconf.h )
fi
fi
AC_SUBST(ZLIBS)

if echo "$VERSION" | grep '[a-zA-Z]' >/dev/null ; then
    AC_DEFINE(IS_DEVELOPMENT_VERSION)
fi

GNUPG_DO_LINK_FILES


AC_OUTPUT([
Makefile
intl/Makefile
po/Makefile.in
util/Makefile
mpi/Makefile
cipher/Makefile
g10/Makefile
doc/Makefile
tools/Makefile
zlib/Makefile
checks/Makefile
])

dnl *-*wedit:notab*-*  Please keep this as the last line.