configure.ac

   1 # Configure template for GNU tar.  -*- autoconf -*-
   2
   3 # Copyright 1991, 1994-2010, 2013-2019 Free Software Foundation, Inc.
   4
   5 # This file is part of GNU tar.
   6
   7 # GNU tar is free software; you can redistribute it and/or modify
   8 # it under the terms of the GNU General Public License as published by
   9 # the Free Software Foundation; either version 3 of the License, or
  10 # (at your option) any later version.
  11
  12 # GNU tar is distributed in the hope that it will be useful,
  13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
  14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  15 # GNU General Public License for more details.
  16
  17 # You should have received a copy of the GNU General Public License
  18 # along with this program.  If not, see <http://www.gnu.org/licenses/>.
  19
  20 AC_INIT([GNU tar], [1.31], [bug-tar@gnu.org])
  21 AC_CONFIG_SRCDIR([src/tar.c])
  22 AC_CONFIG_AUX_DIR([build-aux])
  23 AC_CONFIG_HEADERS([config.h])
  24 AC_PREREQ([2.63])
  25 AM_INIT_AUTOMAKE([1.11 gnits tar-ustar dist-bzip2 dist-xz std-options silent-rules])
  26
  27 # Enable silent rules by default:
  28 AM_SILENT_RULES([yes])
  29
  30 AC_PROG_CC_STDC
  31 AC_EXEEXT
  32 AC_PROG_RANLIB
  33 AC_PROG_YACC
  34 gl_EARLY
  35 AC_CHECK_TOOLS([AR], [ar])
  36
  37 AC_SYS_LARGEFILE
  38 AC_C_INLINE
  39
  40 AC_CHECK_HEADERS_ONCE(fcntl.h linux/fd.h memory.h net/errno.h \
  41   sgtty.h string.h \
  42   sys/param.h sys/device.h sys/gentape.h \
  43   sys/inet.h sys/io/trioctl.h \
  44   sys/mtio.h sys/time.h sys/tprintf.h sys/tape.h \
  45   unistd.h locale.h)
  46
  47 AC_CHECK_HEADERS([sys/buf.h], [], [],
  48 [#if HAVE_SYS_PARAM_H
  49 #include <sys/param.h>
  50 #endif])
  51
  52 AC_HEADER_MAJOR
  53
  54 AC_MSG_CHECKING([for st_fstype string in struct stat])
  55 AC_CACHE_VAL(diff_cv_st_fstype_string,
  56   [AC_TRY_COMPILE([#include <sys/types.h>
  57 #include <sys/stat.h>], [struct stat s; s.st_fstype[0] = 'x';],
  58    diff_cv_st_fstype_string=yes,
  59    diff_cv_st_fstype_string=no)])
  60 AC_MSG_RESULT($diff_cv_st_fstype_string)
  61 if test $diff_cv_st_fstype_string = yes; then
  62   AC_DEFINE(HAVE_ST_FSTYPE_STRING, 1,
  63     [Define if struct stat has a char st_fstype[] member.])
  64 fi
  65
  66 # even if we use gnulib's acl.h with integrated m4 file later on (used because
  67 # of very useful file_has_acl() function) we need following checks that restrict
  68 # tar to use POSIX.1e ACLs only.
  69 AC_ARG_WITH([posix-acls],
  70     AS_HELP_STRING([--without-posix-acls],
  71                    [do not use POSIX.1e access control lists]),
  72     [],
  73     [with_posix_acls=yes])
  74 if test "x$with_posix_acls" != "xno"; then
  75   AC_CHECK_HEADERS(sys/acl.h,, [with_posix_acls=no])
  76   for tar_acl_func in acl_get_file acl_get_fd acl_set_file acl_set_fd \
  77                       acl_to_text acl_from_text acl_delete_def_file \
  78                       acl_free; do \
  79     test "x$with_posix_acls" = xno && break
  80     AC_SEARCH_LIBS([$tar_acl_func], [acl pacl], [], [with_posix_acls=no])
  81   done
  82   if test "x$with_posix_acls" != xno; then
  83     AC_DEFINE(HAVE_POSIX_ACLS,,[Define when we have working POSIX acls])
  84   fi
  85 else
  86   # disable acls in gnulib's checks
  87   export enable_acl=no
  88 fi
  89
  90 AC_TYPE_MODE_T
  91 AC_TYPE_PID_T
  92 AC_TYPE_OFF_T
  93 AC_TYPE_UID_T
  94 AC_CHECK_TYPE(major_t, , AC_DEFINE(major_t, int,
  95                                    [Type of major device numbers.]))
  96 AC_CHECK_TYPE(minor_t, , AC_DEFINE(minor_t, int,
  97                                    [Type of minor device numbers.]))
  98 AC_CHECK_TYPE(dev_t, unsigned)
  99 AC_CHECK_TYPE(ino_t, unsigned)
 100
 101 gt_TYPE_SSIZE_T
 102
 103 # gnulib modules
 104 gl_INIT
 105
 106 if test $ac_cv_lib_error_at_line = no; then
 107   # This means that the error() function is not present in libc, so
 108   # the one from gnulib will be used instead. This function precedes
 109   # error messages it prints with the program name as returned by getprogname()
 110   # call, instead of using the name set by set_program_name.
 111   # Install workaround.
 112   AC_DEFINE([ENABLE_ERROR_PRINT_PROGNAME],[1],
 113             [Enable the use of error_print_progname to print program name with error messages.
 114              See comment to function tar_print_progname in src/tar.c])
 115 fi
 116
 117 # paxutils modules
 118 tar_PAXUTILS
 119
 120 # gl_GCC_VERSION_IFELSE([major], [minor], [run-if-found], [run-if-not-found])
 121 # ------------------------------------------------
 122 # If $CPP is gcc-MAJOR.MINOR or newer, then run RUN-IF-FOUND.
 123 # Otherwise, run RUN-IF-NOT-FOUND.
 124 AC_DEFUN([gl_GCC_VERSION_IFELSE],
 125   [AC_PREPROC_IFELSE(
 126     [AC_LANG_PROGRAM(
 127       [[
 128 #if ($1) < __GNUC__ || (($1) == __GNUC__ && ($2) <= __GNUC_MINOR__)
 129 /* ok */
 130 #else
 131 # error "your version of gcc is older than $1.$2"
 132 #endif
 133       ]]),
 134     ], [$3], [$4])
 135   ]
 136 )
 137
 138 AC_ARG_ENABLE([gcc-warnings],
 139   [AS_HELP_STRING([--enable-gcc-warnings],
 140      [turn on many GCC warnings (for developers; best with GNU make)])],
 141   [case $enableval in
 142      yes|no) ;;
 143      *)      AC_MSG_ERROR([bad value $enableval for gcc-warnings option]) ;;
 144    esac
 145    gl_gcc_warnings=$enableval],
 146   [gl_gcc_warnings=no
 147    if test -d "$srcdir"/.git; then
 148      gl_GCC_VERSION_IFELSE([4], [6], [gl_gcc_warnings=yes])
 149    fi]
 150 )
 151
 152 if test "$gl_gcc_warnings" = yes; then
 153   gl_WARN_ADD([-Werror], [WERROR_CFLAGS])
 154   AC_SUBST([WERROR_CFLAGS])
 155
 156   nw=
 157   # This, $nw, is the list of warnings we disable.
 158   nw="$nw -Wformat-nonliteral"      # warnings in Fedora 17 stdio.h
 159   nw="$nw -Wvla"                    # warnings in gettext.h
 160   nw="$nw -Wswitch-default"         # Too many warnings for now
 161   nw="$nw -Wunsafe-loop-optimizations" # It's OK to omit unsafe optimizations.
 162   nw="$nw -Winline"                 # It's OK to not inline.
 163   nw="$nw -Wstrict-overflow"        # It's OK to optimize strictly.
 164   nw="$nw -Wsuggest-attribute=pure" # Too many warnings for now.
 165   nw="$nw -Wstack-protector"
 166
 167   gl_MANYWARN_ALL_GCC([ws])
 168   gl_MANYWARN_COMPLEMENT([ws], [$ws], [$nw])
 169   for w in $ws; do
 170     gl_WARN_ADD([$w])
 171   done
 172   gl_WARN_ADD([-Wno-sign-compare])     # Too many warnings for now
 173   gl_WARN_ADD([-Wno-type-limits])      # It's OK to optimize based on types.
 174   gl_WARN_ADD([-Wno-unused-parameter]) # Too many warnings for now
 175   gl_WARN_ADD([-Wno-format-nonliteral])
 176
 177   gl_WARN_ADD([-fdiagnostics-show-option])
 178   gl_WARN_ADD([-funit-at-a-time])
 179
 180
 181   AC_SUBST([WARN_CFLAGS])
 182
 183   AC_DEFINE([lint], [1], [Define to 1 if the compiler is checking for lint.])
 184   AH_VERBATIM([FORTIFY_SOURCE],
 185   [/* Enable compile-time and run-time bounds-checking, and some warnings,
 186       without upsetting glibc 2.15+. */
 187    #if !defined _FORTIFY_SOURCE && defined __OPTIMIZE__ && __OPTIMIZE__
 188    # define _FORTIFY_SOURCE 2
 189    #endif
 190   ])
 191   AC_DEFINE([GNULIB_PORTCHECK], [1], [enable some gnulib portability checks])
 192
 193   # Use a slightly smaller set of warning options for lib/.
 194   # Remove the following and save the result in GNULIB_WARN_CFLAGS.
 195   nw=
 196   nw="$nw -Wmissing-prototypes"
 197   nw="$nw -Wunused-macros"
 198   #
 199   # These are for argp.
 200   nw="$nw -Wmissing-field-initializers"
 201   nw="$nw -Wshadow"
 202   #
 203   gl_MANYWARN_COMPLEMENT([GNULIB_WARN_CFLAGS], [$WARN_CFLAGS], [$nw])
 204
 205   # This is also for argp.
 206   gl_WARN_ADD([-Wno-missing-field-initializers], [GNULIB_WARN_CFLAGS])
 207
 208   AC_SUBST([GNULIB_WARN_CFLAGS])
 209
 210   # For gnulib-tests, the set is slightly smaller still.
 211   nw=
 212   # It's not worth being this picky about test programs.
 213   nw="$nw -Wsuggest-attribute=const"
 214   gl_MANYWARN_COMPLEMENT([GNULIB_TEST_WARN_CFLAGS],
 215                          [$GNULIB_WARN_CFLAGS], [$nw])
 216   AC_SUBST([GNULIB_TEST_WARN_CFLAGS])
 217 fi
 218
 219 TAR_HEADERS_ATTR_XATTR_H
 220
 221 AC_CHECK_FUNCS_ONCE([fchmod fchown fsync lstat mkfifo readlink symlink])
 222
 223 AC_CHECK_DECLS([getgrgid],,, [#include <grp.h>])
 224 AC_CHECK_DECLS([getpwuid],,, [#include <pwd.h>])
 225 AC_CHECK_DECLS([time],,, [#include <time.h>])
 226
 227 AC_REPLACE_FUNCS(waitpid)
 228
 229 AC_ARG_VAR([RSH], [Configure absolute path to default remote shell binary])
 230 AC_CACHE_CHECK(for remote shell, tar_cv_path_RSH,
 231   [if test -n "$RSH"; then
 232     tar_cv_path_RSH=$RSH
 233   else
 234     tar_cv_path_RSH=no
 235     for ac_file in /usr/ucb/rsh /usr/bin/remsh /usr/bin/rsh /usr/bsd/rsh \
 236         /usr/bin/nsh /usr/bin/rcmd
 237     do
 238       # Prefer a non-symlink rsh to a symlink one, so that binaries built
 239       # on AIX 4.1.4, where /usr/ucb/rsh is a symlink to /usr/bin/rsh
 240       # will run on AIX 4.3.0, which has only /usr/bin/rsh.
 241       if test -f $ac_file; then
 242         if (test -h $ac_file) 2>/dev/null; then
 243           test $tar_cv_path_RSH = no && tar_cv_path_RSH=$ac_file
 244         else
 245           tar_cv_path_RSH=$ac_file
 246           break
 247         fi
 248       fi
 249     done
 250   fi])
 251 if test $tar_cv_path_RSH = no; then
 252   AC_CHECK_HEADERS(netdb.h)
 253 else
 254   AC_DEFINE_UNQUOTED(REMOTE_SHELL, "$tar_cv_path_RSH",
 255     [Define to the full path of your rsh, if any.])
 256 fi
 257
 258 TAR_COMPR_PROGRAM(compress)
 259 TAR_COMPR_PROGRAM(gzip)
 260 TAR_COMPR_PROGRAM(bzip2)
 261 TAR_COMPR_PROGRAM(lzip)
 262 TAR_COMPR_PROGRAM(lzma)
 263 TAR_COMPR_PROGRAM(lzop)
 264 TAR_COMPR_PROGRAM(xz)
 265 TAR_COMPR_PROGRAM(zstd)
 266
 267 AC_MSG_CHECKING(for default archive format)
 268
 269 AC_ARG_VAR([DEFAULT_ARCHIVE_FORMAT],
 270            [Set the default archive format. Allowed values are: V7, OLDGNU, USTAR, POSIX, GNU. Default is GNU])
 271
 272 if test -z "$DEFAULT_ARCHIVE_FORMAT"; then
 273   DEFAULT_ARCHIVE_FORMAT="GNU"
 274 fi
 275 case $DEFAULT_ARCHIVE_FORMAT in
 276   V7|OLDGNU|USTAR|POSIX|GNU) ;;
 277   *) AC_MSG_ERROR(Invalid format name);;
 278 esac
 279 AC_DEFINE_UNQUOTED(DEFAULT_ARCHIVE_FORMAT, ${DEFAULT_ARCHIVE_FORMAT}_FORMAT,
 280   [By default produce archives of this format])
 281 AC_MSG_RESULT($DEFAULT_ARCHIVE_FORMAT)
 282
 283 AC_MSG_CHECKING(for default archive)
 284
 285 AC_ARG_VAR([DEFAULT_ARCHIVE],
 286            [Set the name of the default archive (default: -)])
 287 if test -z "$DEFAULT_ARCHIVE"; then
 288   DEFAULT_ARCHIVE=-
 289 else
 290   if test -z "`ls $DEFAULT_ARCHIVE 2>/dev/null`"; then
 291     AC_MSG_WARN(DEFAULT_ARCHIVE '$DEFAULT_ARCHIVE' not found on this system)
 292   fi
 293   # FIXME: Look for DEFTAPE in <sys/mtio.h>.
 294   # FIXME: Let DEVICE_PREFIX be configured from the environment.
 295   # FIXME: Rearrange, here.
 296   case $DEFAULT_ARCHIVE in
 297     *[[0-7][lmh]])
 298       AC_DEFINE(DENSITY_LETTER, 1,
 299         [Define to 1 if density may be indicated by [lmh] at end of device.])
 300       device_prefix=`echo $DEFAULT_ARCHIVE | sed 's/[0-7][lmh]$//'`
 301       ;;
 302     *[[0-7]])
 303       device_prefix=`echo $DEFAULT_ARCHIVE | sed 's/[0-7]$//'`
 304       ;;
 305     *)
 306       device_prefix=
 307       ;;
 308   esac
 309   case "$device_prefix" in
 310     ?*)
 311       AC_DEFINE_UNQUOTED(DEVICE_PREFIX, "$device_prefix",
 312         [Define to a string giving the prefix of the default device, without the part specifying the unit and density.])
 313       ;;
 314   esac
 315 fi
 316 AC_DEFINE_UNQUOTED(DEFAULT_ARCHIVE, "$DEFAULT_ARCHIVE",
 317   [Define to a string giving the full name of the default archive file.])
 318 AC_MSG_RESULT($DEFAULT_ARCHIVE)
 319
 320 AC_ARG_VAR([DEFAULT_BLOCKING],
 321            [Define default blocking factor (default: 20)])
 322 AC_MSG_CHECKING(for default blocking)
 323 DEFAULT_BLOCKING=${DEFAULT_BLOCKING-20}
 324 AC_DEFINE_UNQUOTED(DEFAULT_BLOCKING, $DEFAULT_BLOCKING,
 325   [Define to a number giving the default blocking size for archives.])
 326 AC_MSG_RESULT($DEFAULT_BLOCKING)
 327
 328 AC_MSG_CHECKING(for default quoting style)
 329
 330 m4_define([QUOTING_STYLES],dnl
 331           [literal|shell|shell-always|c|escape|locale|clocale])
 332 DEFAULT_QUOTING_STYLE="escape"
 333 AC_ARG_VAR([DEFAULT_QUOTING_STYLE],
 334            [Set the default quoting style. Allowed values are: ] m4_bpatsubst(QUOTING_STYLES,[|], [[, ]]) [. Default is "escape".])
 335
 336 case $DEFAULT_QUOTING_STYLE in
 337 QUOTING_STYLES) ;;
 338 *)  AC_MSG_ERROR(Invalid quoting style);;
 339 esac
 340 AC_MSG_RESULT($DEFAULT_QUOTING_STYLE)
 341 DEFAULT_QUOTING_STYLE=`echo ${DEFAULT_QUOTING_STYLE}|sed 's/-/_/g'`_quoting_style
 342 AC_DEFINE_UNQUOTED(DEFAULT_QUOTING_STYLE, $DEFAULT_QUOTING_STYLE,
 343   [Define to a default quoting style (see lib/quoteargs.c for the list)])
 344
 345 # Iconv
 346 AM_ICONV
 347 AC_CHECK_HEADERS(iconv.h)
 348 AC_CHECK_TYPE(iconv_t,:,
 349               AC_DEFINE(iconv_t, int,
 350                         [Conversion descriptor type]),
 351               [
 352 #ifdef HAVE_ICONV_H
 353 # include <iconv.h>
 354 #endif
 355 ])
 356
 357 # Gettext.
 358 AM_GNU_GETTEXT([external], [need-formatstring-macros])
 359 AM_GNU_GETTEXT_VERSION([0.16])
 360
 361 # Initialize the test suite.
 362 AC_CONFIG_TESTDIR(tests)
 363 AC_CONFIG_FILES([tests/Makefile tests/atlocal]) # FIXME: tests/preset?
 364 AM_MISSING_PROG([AUTOM4TE], [autom4te])
 365
 366 AC_SUBST(BACKUP_LIBEXEC_SCRIPTS)
 367 AC_SUBST(BACKUP_SBIN_SCRIPTS)
 368 AC_ARG_ENABLE(backup-scripts,
 369               AC_HELP_STRING([--enable-backup-scripts],
 370                              [Create and install backup and restore scripts]),
 371               [case $enableval in
 372                yes) BACKUP_LIBEXEC_SCRIPTS='$(BACKUP_LIBEXEC_SCRIPTS_LIST)'
 373                     BACKUP_SBIN_SCRIPTS='$(BACKUP_SBIN_SCRIPTS_LIST)'
 374                     ;;
 375                esac])
 376
 377 AC_SUBST(BACKUP_SED_COND)
 378 if date +%Y-%m-%d 2>/dev/null >&2; then
 379         BACKUP_SED_COND='/^\#ELSE_DATE_FORMAT_OK/,/^\#ENDIF_DATE_FORMAT_OK/d;/^\#IF_DATE_FORMAT_OK/d'
 380 else
 381         BACKUP_SED_COND='/^\#IF_DATE_FORMAT_OK/,/^\#ELSE_DATE_FORMAT_OK/d;/^\#ENDIF_DATE_FORMAT_OK/d'
 382 fi
 383
 384 AC_OUTPUT([Makefile\
 385            doc/Makefile\
 386            gnu/Makefile\
 387            lib/Makefile\
 388            po/Makefile.in\
 389            scripts/Makefile\
 390            rmt/Makefile\
 391            src/Makefile])