configure.in

   1 AC_PREREQ([2.67])
   2 AC_INIT([cryptsetup],[1.3.2-cvs])
   3
   4 dnl library version from <major>.<minor>.<release>[-<suffix>]
   5 LIBCRYPTSETUP_VERSION=$(echo $PACKAGE_VERSION | cut -f1 -d-)
   6 LIBCRYPTSETUP_VERSION_INFO=3:0:2
   7
   8 AC_CONFIG_SRCDIR(src/cryptsetup.c)
   9 AC_CONFIG_MACRO_DIR([m4])
  10
  11 AC_CONFIG_HEADERS([config.h:config.h.in])
  12 AM_INIT_AUTOMAKE(dist-bzip2)
  13
  14 if test "x$prefix" = "xNONE"; then
  15         sysconfdir=/etc
  16 fi
  17 AC_PREFIX_DEFAULT(/usr)
  18
  19 AC_CANONICAL_HOST
  20 AC_USE_SYSTEM_EXTENSIONS
  21 AC_PROG_CC
  22 AM_PROG_CC_C_O
  23 AC_PROG_CPP
  24 AC_PROG_INSTALL
  25 AC_PROG_MAKE_SET
  26 AC_ENABLE_STATIC(no)
  27 LT_INIT
  28
  29 AC_HEADER_DIRENT
  30 AC_HEADER_STDC
  31 AC_CHECK_HEADERS(fcntl.h malloc.h inttypes.h sys/ioctl.h sys/mman.h \
  32         ctype.h unistd.h locale.h)
  33
  34 AC_CHECK_HEADERS(uuid/uuid.h,,[AC_MSG_ERROR('You need the uuid library')])
  35 AC_CHECK_HEADER(libdevmapper.h,,[AC_MSG_ERROR('You need the device-mapper library')])
  36
  37 saved_LIBS=$LIBS
  38 AC_CHECK_LIB(uuid, uuid_clear, ,[AC_MSG_ERROR('You need the uuid library')])
  39 AC_SUBST(UUID_LIBS, $LIBS)
  40 LIBS=$saved_LIBS
  41
  42 AC_CHECK_FUNCS([posix_memalign])
  43
  44 AC_C_CONST
  45 AC_C_BIGENDIAN
  46 AC_TYPE_OFF_T
  47 AC_SYS_LARGEFILE
  48
  49 AC_PROG_GCC_TRADITIONAL
  50
  51 dnl ==========================================================================
  52
  53 AM_GNU_GETTEXT([external],[need-ngettext])
  54 AM_GNU_GETTEXT_VERSION([0.15])
  55
  56 dnl ==========================================================================
  57
  58 saved_LIBS=$LIBS
  59 AC_CHECK_LIB(popt, poptConfigFileToString,,
  60         [AC_MSG_ERROR([You need popt 1.7 or newer to compile.])])
  61 AC_SUBST(POPT_LIBS, $LIBS)
  62 LIBS=$saved_LIBS
  63
  64 dnl ==========================================================================
  65 dnl Crypto backend functions
  66
  67 AC_DEFUN([CONFIGURE_GCRYPT], [
  68         AM_PATH_LIBGCRYPT(1.1.42,,[AC_MSG_ERROR('You need the gcrypt library')])
  69
  70         if test x$enable_static_cryptsetup = xyes; then
  71                 saved_LIBS=$LIBS
  72                 LIBS="$saved_LIBS $LIBGCRYPT_LIBS -static"
  73                 AC_CHECK_LIB(gcrypt, gcry_check_version,,
  74                         AC_MSG_ERROR([Cannot find static gcrypt library.]),
  75                         [-lgpg-error])
  76                 LIBGCRYPT_STATIC_LIBS="$LIBGCRYPT_LIBS -lgpg-error"
  77                 LIBS=$saved_LIBS
  78         fi
  79
  80         CRYPTO_CFLAGS=$LIBGCRYPT_CFLAGS
  81         CRYPTO_LIBS=$LIBGCRYPT_LIBS
  82         CRYPTO_STATIC_LIBS=$LIBGCRYPT_STATIC_LIBS
  83 ])
  84
  85 AC_DEFUN([CONFIGURE_OPENSSL], [
  86         PKG_CHECK_MODULES([OPENSSL], [openssl >= 0.9.8],,
  87                 AC_MSG_ERROR('You need openssl library'))
  88         CRYPTO_CFLAGS=$OPENSSL_CFLAGS
  89         CRYPTO_LIBS=$OPENSSL_LIBS
  90
  91         if test x$enable_static_cryptsetup = xyes; then
  92                 saved_PKG_CONFIG=$PKG_CONFIG
  93                 PKG_CONFIG="$PKG_CONFIG --static"
  94                 PKG_CHECK_MODULES([OPENSSL], [openssl])
  95                 CRYPTO_STATIC_LIBS=$OPENSSL_LIBS
  96                 PKG_CONFIG=$saved_PKG_CONFIG
  97         fi
  98 ])
  99
 100 AC_DEFUN([CONFIGURE_NSS], [
 101         if test x$enable_static_cryptsetup = xyes; then
 102                 AC_MSG_ERROR([Static build of cryptsetup is not supported with NSS.]),
 103         fi
 104
 105         AC_MSG_WARN([NSS backend does NOT provide backward compatibility (missing ripemd160 hash).])
 106
 107         PKG_CHECK_MODULES([NSS], [nss],,
 108                 AC_MSG_ERROR('You need nss library'))
 109         CRYPTO_CFLAGS=$NSS_CFLAGS
 110         CRYPTO_LIBS=$NSS_LIBS
 111 ])
 112
 113 AC_DEFUN([CONFIGURE_KERNEL], [
 114         AC_CHECK_HEADERS(linux/if_alg.h,,
 115                 [AC_MSG_ERROR('You need Linux kernel with userspace crypto interface.')])
 116 #       AC_CHECK_DECLS([AF_ALG],,
 117 #               [AC_MSG_ERROR('You need Linux kernel with userspace crypto interface.')],
 118 #               [#include <sys/socket.h>])
 119
 120 ])
 121
 122 AC_DEFUN([CONFIGURE_NETTLE], [
 123         AC_CHECK_HEADERS(nettle/sha.h,,
 124                 [AC_MSG_ERROR('You need Nettle cryptographic library.')])
 125
 126         saved_LIBS=$LIBS
 127         AC_CHECK_LIB(nettle, nettle_sha512_init,,
 128                 [AC_MSG_ERROR('You need Nettle library version 2.1 or more recent.')])
 129         CRYPTO_LIBS=$LIBS
 130         LIBS=$saved_LIBS
 131
 132         AC_MSG_WARN([Nettle backend does NOT provide backward compatibility (missing ripemd160 hash).])
 133
 134         CRYPTO_STATIC_LIBS=$CRYPTO_LIBS
 135 ])
 136
 137 dnl ==========================================================================
 138 saved_LIBS=$LIBS
 139
 140 AC_ARG_ENABLE([static-cryptsetup],
 141         AS_HELP_STRING([--enable-static-cryptsetup],
 142         [enable build of static cryptsetup binary]))
 143 if test x$enable_static_cryptsetup = xyes; then
 144         if test x$enable_static = xno; then
 145                 AC_MSG_WARN([Requested static cryptsetup build, enabling static library.])
 146                 enable_static=yes
 147         fi
 148 fi
 149 AM_CONDITIONAL(STATIC_CRYPTSETUP, test x$enable_static_cryptsetup = xyes)
 150
 151 AC_ARG_ENABLE(selinux,
 152         AS_HELP_STRING([--disable-selinux],
 153         [disable selinux support [default=auto]]),[], [])
 154
 155 AC_ARG_ENABLE([udev],
 156         AS_HELP_STRING([--disable-udev],
 157         [disable udev support]),[], enable_udev=yes)
 158
 159 dnl Try to use pkg-config for devmapper, but fallback to old detection
 160 PKG_CHECK_MODULES([DEVMAPPER], [devmapper >= 1.02.03],, [
 161         AC_CHECK_LIB(devmapper, dm_task_set_name,,
 162                 [AC_MSG_ERROR([You need the device-mapper library.])])
 163         AC_CHECK_LIB(devmapper, dm_task_set_message,,
 164                 [AC_MSG_ERROR([The device-mapper library on your system is too old.])])
 165         DEVMAPPER_LIBS=$LIBS
 166 ])
 167 LIBS=$saved_LIBS
 168
 169 LIBS="$LIBS $DEVMAPPER_LIBS"
 170 AC_CHECK_DECLS([dm_task_secure_data], [], [], [#include <libdevmapper.h>])
 171 AC_CHECK_DECLS([DM_UDEV_DISABLE_DISK_RULES_FLAG], [have_cookie=yes], [have_cookie=no], [#include <libdevmapper.h>])
 172 if test "x$enable_udev" = xyes; then
 173         if test "x$have_cookie" = xno; then
 174                 AC_MSG_WARN([The device-mapper library on your system has no udev support, udev support disabled.])
 175         else
 176                 AC_DEFINE(USE_UDEV, 1, [Try to use udev synchronisation?])
 177         fi
 178 fi
 179 LIBS=$saved_LIBS
 180
 181 dnl Crypto backend configuration.
 182 AC_ARG_WITH([crypto_backend],
 183         AS_HELP_STRING([--with-crypto_backend=BACKEND], [crypto backend (gcrypt/openssl/nss/kernel/nettle) [gcrypt]]),
 184         [], with_crypto_backend=gcrypt
 185 )
 186 case $with_crypto_backend in
 187         gcrypt)  CONFIGURE_GCRYPT([]) ;;
 188         openssl) CONFIGURE_OPENSSL([]) ;;
 189         nss)     CONFIGURE_NSS([]) ;;
 190         kernel)  CONFIGURE_KERNEL([]) ;;
 191         nettle)  CONFIGURE_NETTLE([]) ;;
 192         *) AC_MSG_ERROR([Unknown crypto backend.]) ;;
 193 esac
 194 AM_CONDITIONAL(CRYPTO_BACKEND_GCRYPT,  test $with_crypto_backend = gcrypt)
 195 AM_CONDITIONAL(CRYPTO_BACKEND_OPENSSL, test $with_crypto_backend = openssl)
 196 AM_CONDITIONAL(CRYPTO_BACKEND_NSS,     test $with_crypto_backend = nss)
 197 AM_CONDITIONAL(CRYPTO_BACKEND_KERNEL,  test $with_crypto_backend = kernel)
 198 AM_CONDITIONAL(CRYPTO_BACKEND_NETTLE,  test $with_crypto_backend = nettle)
 199
 200 dnl Magic for cryptsetup.static build.
 201 if test x$enable_static_cryptsetup = xyes; then
 202         saved_PKG_CONFIG=$PKG_CONFIG
 203         PKG_CONFIG="$PKG_CONFIG --static"
 204
 205         LIBS="$saved_LIBS -static"
 206         AC_CHECK_LIB(popt, poptGetContext,,
 207                 AC_MSG_ERROR([Cannot find static popt library.]))
 208
 209         dnl Try to detect needed device-mapper static libraries, try pkg-config first.
 210         LIBS="$saved_LIBS -static"
 211         PKG_CHECK_MODULES([DEVMAPPER_STATIC], [devmapper >= 1.02.27],,[
 212                 DEVMAPPER_STATIC_LIBS=$DEVMAPPER_LIBS
 213                 if test "x$enable_selinux" != xno; then
 214                         AC_CHECK_LIB(sepol, sepol_bool_set)
 215                         AC_CHECK_LIB(selinux, is_selinux_enabled)
 216                         DEVMAPPER_STATIC_LIBS="$DEVMAPPER_STATIC_LIBS $LIBS"
 217                 fi
 218         ])
 219         LIBS="$saved_LIBS $DEVMAPPER_STATIC_LIBS"
 220         AC_CHECK_LIB(devmapper, dm_task_set_uuid,,
 221                 AC_MSG_ERROR([Cannot link with static device-mapper library.]))
 222
 223         LIBS=$saved_LIBS
 224         PKG_CONFIG=$saved_PKG_CONFIG
 225 fi
 226
 227 AC_SUBST([DEVMAPPER_LIBS])
 228 AC_SUBST([DEVMAPPER_STATIC_LIBS])
 229
 230 AC_SUBST([CRYPTO_CFLAGS])
 231 AC_SUBST([CRYPTO_LIBS])
 232 AC_SUBST([CRYPTO_STATIC_LIBS])
 233
 234 AC_SUBST([LIBCRYPTSETUP_VERSION])
 235 AC_SUBST([LIBCRYPTSETUP_VERSION_INFO])
 236
 237 dnl ==========================================================================
 238 AC_ARG_ENABLE([dev-random], AS_HELP_STRING([--enable-dev-random],
 239 [use blocking /dev/random by default for key generator (otherwise use /dev/urandom)]),
 240 [default_rng=/dev/random], [default_rng=/dev/urandom])
 241 AC_DEFINE_UNQUOTED(DEFAULT_RNG, ["$default_rng"], [default RNG type for key generator])
 242
 243 dnl ==========================================================================
 244 AC_DEFUN([CS_DEFINE],
 245         [AC_DEFINE_UNQUOTED(DEFAULT_[]m4_translit([$1], [-a-z], [_A-Z]), [$2], [$3])
 246 ])
 247
 248 AC_DEFUN([CS_STR_WITH], [AC_ARG_WITH([$1],
 249         [AS_HELP_STRING(--with-[$1], [default $2 [$3]])],
 250         [CS_DEFINE([$1], ["$withval"], [$2])],
 251         [CS_DEFINE([$1], ["$3"], [$2])]
 252 )])
 253
 254 AC_DEFUN([CS_NUM_WITH], [AC_ARG_WITH([$1],
 255         [AS_HELP_STRING(--with-[$1], [default $2 [$3]])],
 256         [CS_DEFINE([$1], [$withval], [$2])],
 257         [CS_DEFINE([$1], [$3], [$2])]
 258 )])
 259
 260 CS_STR_WITH([plain-hash],   [password hashing function for plain mode], [ripemd160])
 261 CS_STR_WITH([plain-cipher], [cipher for plain mode], [aes])
 262 CS_STR_WITH([plain-mode],   [cipher mode for plain mode], [cbc-essiv:sha256])
 263 CS_NUM_WITH([plain-keybits],[key length in bits for plain mode], [256])
 264
 265 CS_STR_WITH([luks1-hash],   [hash function for LUKS1 header], [sha1])
 266 CS_STR_WITH([luks1-cipher], [cipher for LUKS1], [aes])
 267 CS_STR_WITH([luks1-mode],   [cipher mode for LUKS1], [cbc-essiv:sha256])
 268 CS_NUM_WITH([luks1-keybits],[key length in bits for LUKS1], [256])
 269
 270 CS_STR_WITH([loopaes-cipher], [cipher for loop-AES mode], [aes])
 271 CS_NUM_WITH([loopaes-keybits],[key length in bits for loop-AES mode], [256])
 272
 273 CS_NUM_WITH([keyfile-size-maxkb],[maximum keyfile size (in kilobytes)], [8192])
 274 CS_NUM_WITH([passphrase-size-max],[maximum keyfile size (in kilobytes)], [512])
 275
 276 dnl ==========================================================================
 277
 278 AC_CONFIG_FILES([ Makefile
 279 lib/Makefile
 280 lib/libcryptsetup.pc
 281 lib/crypto_backend/Makefile
 282 lib/luks1/Makefile
 283 lib/loopaes/Makefile
 284 src/Makefile
 285 po/Makefile.in
 286 man/Makefile
 287 tests/Makefile
 288 ])
 289 AC_OUTPUT