acinclude.m4

   1 dnl Macros to configure gpgme
   2
   3 dnl GNUPG_FIX_HDR_VERSION(FILE, NAME)
   4 dnl Make the version number in gcrypt/gcrypt.h the same as the one here.
   5 dnl (this is easier than to have a .in file just for one substitution)
   6 dnl We must use a temp file in the current directory because make distcheck
   7 dnl install all sourcefiles RO.
   8 dnl (wk 2001-12-18)
   9 AC_DEFUN(GNUPG_FIX_HDR_VERSION,
  10   [ sed "s/^#define $2 \".*/#define $2 \"$VERSION\"/" $srcdir/$1 > fixhdr.tmp
  11     if cmp -s $srcdir/$1 fixhdr.tmp 2>/dev/null; then
  12         rm -f fixhdr.tmp
  13     else
  14         rm -f $srcdir/$1
  15         if mv fixhdr.tmp $srcdir/$1 ; then
  16             :
  17         else
  18             AC_MSG_ERROR([[
  19 ***
  20 *** Failed to fix the version string macro $2 in $1.
  21 *** The old file has been saved as fixhdr.tmp
  22 ***]])
  23         fi
  24         AC_MSG_WARN([fixed the $2 macro in $1])
  25     fi
  26   ])
  27
  28
  29 dnl ##
  30 dnl ##  GNU Pth - The GNU Portable Threads
  31 dnl ##  Copyright (c) 1999-2002 Ralf S. Engelschall <rse@engelschall.com>
  32 dnl ##
  33 dnl ##  This file is part of GNU Pth, a non-preemptive thread scheduling
  34 dnl ##  library which can be found at http://www.gnu.org/software/pth/.
  35 dnl ##
  36 dnl ##  This library is free software; you can redistribute it and/or
  37 dnl ##  modify it under the terms of the GNU Lesser General Public
  38 dnl ##  License as published by the Free Software Foundation; either
  39 dnl ##  version 2.1 of the License, or (at your option) any later version.
  40 dnl ##
  41 dnl ##  This library is distributed in the hope that it will be useful,
  42 dnl ##  but WITHOUT ANY WARRANTY; without even the implied warranty of
  43 dnl ##  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
  44 dnl ##  Lesser General Public License for more details.
  45 dnl ##
  46 dnl ##  You should have received a copy of the GNU Lesser General Public
  47 dnl ##  License along with this library; if not, write to the Free Software
  48 dnl ##  Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307
  49 dnl ##  USA, or contact Ralf S. Engelschall <rse@engelschall.com>.
  50 dnl ##
  51 dnl ##  pth.m4: Autoconf macro for locating GNU Pth from within
  52 dnl ##          configure.in of third-party software packages
  53 dnl ##
  54
  55 dnl ##
  56 dnl ##  Synopsis:
  57 dnl ##  AC_CHECK_PTH([MIN-VERSION [,          # minimum Pth version, e.g. 1.2.0
  58 dnl ##                DEFAULT-WITH-PTH [,     # default value for --with-pth option
  59 dnl ##                DEFAULT-WITH-PTH-TEST [,# default value for --with-pth-test option
  60 dnl ##                EXTEND-VARS [,          # whether CFLAGS/LDFLAGS/etc are extended
  61 dnl ##                ACTION-IF-FOUND [,      # action to perform if Pth was found
  62 dnl ##                ACTION-IF-NOT-FOUND     # action to perform if Pth was not found
  63 dnl ##                ]]]]]])
  64 dnl ##  Examples:
  65 dnl ##  AC_CHECK_PTH(1.2.0)
  66 dnl ##  AC_CHECK_PTH(1.2.0,,,no,CFLAGS="$CFLAGS -DHAVE_PTH $PTH_CFLAGS")
  67 dnl ##  AC_CHECK_PTH(1.2.0,yes,yes,yes,CFLAGS="$CFLAGS -DHAVE_PTH")
  68 dnl ##
  69 dnl
  70 dnl #   auxilliary macros
  71 AC_DEFUN(_AC_PTH_ERROR, [dnl
  72 AC_MSG_RESULT([*FAILED*])
  73 dnl define(_ac_pth_line,dnl
  74 dnl "+------------------------------------------------------------------------+")
  75 dnl echo " _ac_pth_line" 1>&2
  76 cat <<EOT | sed -e 's/^[[       ]]*/ | /' -e 's/>>/  /' 1>&2
  77 $1
  78 EOT
  79 dnl echo " _ac_pth_line" 1>&2
  80 dnl undefine(_ac_pth_line)
  81 exit 1
  82 ])
  83 AC_DEFUN(_AC_PTH_VERBOSE, [dnl
  84 if test ".$verbose" = .yes; then
  85     AC_MSG_RESULT([  $1])
  86 fi
  87 ])
  88 dnl #   the user macro
  89 AC_DEFUN(AC_CHECK_PTH, [dnl
  90 dnl
  91 dnl #   prerequisites
  92 AC_REQUIRE([AC_PROG_CC])dnl
  93 AC_REQUIRE([AC_PROG_CPP])dnl
  94 dnl
  95 PTH_CPPFLAGS=''
  96 PTH_CFLAGS=''
  97 PTH_LDFLAGS=''
  98 PTH_LIBS=''
  99 AC_SUBST(PTH_CPPFLAGS)
 100 AC_SUBST(PTH_CFLAGS)
 101 AC_SUBST(PTH_LDFLAGS)
 102 AC_SUBST(PTH_LIBS)
 103 dnl #   command line options
 104 AC_MSG_CHECKING(for GNU Pth)
 105 _AC_PTH_VERBOSE([])
 106 AC_ARG_WITH(pth,dnl
 107 [  --with-pth[=ARG]        Build with GNU Pth Library  (default=]ifelse([$2],,yes,$2)[)],dnl
 108 ,dnl
 109 with_pth="ifelse([$2],,yes,$2)"
 110 )dnl
 111 AC_ARG_WITH(pth-test,dnl
 112 [  --with-pth-test         Perform GNU Pth Sanity Test (default=]ifelse([$3],,yes,$3)[)],dnl
 113 ,dnl
 114 with_pth_test="ifelse([$3],,yes,$3)"
 115 )dnl
 116 _AC_PTH_VERBOSE([+ Command Line Options:])
 117 _AC_PTH_VERBOSE([    o --with-pth=$with_pth])
 118 _AC_PTH_VERBOSE([    o --with-pth-test=$with_pth_test])
 119 dnl
 120 dnl #   configuration
 121 if test ".$with_pth" != .no; then
 122     _pth_subdir=no
 123     _pth_subdir_opts=''
 124     case "$with_pth" in
 125         subdir:* )
 126             _pth_subdir=yes
 127             changequote(, )dnl
 128             _pth_subdir_opts=`echo $with_pth | sed -e 's/^subdir:[^     ]*[     ]*//'`
 129             with_pth=`echo $with_pth | sed -e 's/^subdir:\([^   ]*\).*$/\1/'`
 130             changequote([, ])dnl
 131             ;;
 132     esac
 133     _pth_version=""
 134     _pth_location=""
 135     _pth_type=""
 136     _pth_cppflags=""
 137     _pth_cflags=""
 138     _pth_ldflags=""
 139     _pth_libs=""
 140     if test ".$with_pth" = .yes; then
 141         #   via config script in $PATH
 142         changequote(, )dnl
 143         _pth_version=`(pth-config --version) 2>/dev/null |\
 144                       sed -e 's/^.*\([0-9]\.[0-9]*[ab.][0-9]*\).*$/\1/'`
 145         changequote([, ])dnl
 146         if test ".$_pth_version" != .; then
 147             _pth_location=`pth-config --prefix`
 148             _pth_type='installed'
 149             _pth_cppflags=`pth-config --cflags`
 150             _pth_cflags=`pth-config --cflags`
 151             _pth_ldflags=`pth-config --ldflags`
 152             _pth_libs=`pth-config --libs`
 153         fi
 154     elif test -d "$with_pth"; then
 155         with_pth=`echo $with_pth | sed -e 's;/*$;;'`
 156         _pth_found=no
 157         #   via locally included source tree
 158         if test ".$_pth_subdir" = .yes; then
 159             _pth_location="$with_pth"
 160             _pth_type='local'
 161             _pth_cppflags="-I$with_pth"
 162             _pth_cflags="-I$with_pth"
 163             if test -f "$with_pth/ltconfig"; then
 164                 _pth_ldflags="-L$with_pth/.libs"
 165             else
 166                 _pth_ldflags="-L$with_pth"
 167             fi
 168             _pth_libs="-lpth"
 169             changequote(, )dnl
 170             _pth_version=`grep '^const char PTH_Hello' $with_pth/pth_vers.c |\
 171                           sed -e 's;^.*Version[         ]*\([0-9]*\.[0-9]*[.ab][0-9]*\)[        ].*$;\1;'`
 172             changequote([, ])dnl
 173             _pth_found=yes
 174             ac_configure_args="$ac_configure_args --enable-subdir $_pth_subdir_opts"
 175             with_pth_test=no
 176         fi
 177         #   via config script under a specified directory
 178         #   (a standard installation, but not a source tree)
 179         if test ".$_pth_found" = .no; then
 180             for _dir in $with_pth/bin $with_pth; do
 181                 if test -f "$_dir/pth-config"; then
 182                     test -f "$_dir/pth-config.in" && continue # pth-config in source tree!
 183                     changequote(, )dnl
 184                     _pth_version=`($_dir/pth-config --version) 2>/dev/null |\
 185                                   sed -e 's/^.*\([0-9]\.[0-9]*[ab.][0-9]*\).*$/\1/'`
 186                     changequote([, ])dnl
 187                     if test ".$_pth_version" != .; then
 188                         _pth_location=`$_dir/pth-config --prefix`
 189                         _pth_type="installed"
 190                         _pth_cppflags=`$_dir/pth-config --cflags`
 191                         _pth_cflags=`$_dir/pth-config --cflags`
 192                         _pth_ldflags=`$_dir/pth-config --ldflags`
 193                         _pth_libs=`$_dir/pth-config --libs`
 194                         _pth_found=yes
 195                         break
 196                     fi
 197                 fi
 198             done
 199         fi
 200         #   in any subarea under a specified directory
 201         #   (either a special installation or a Pth source tree)
 202         if test ".$_pth_found" = .no; then
 203             changequote(, )dnl
 204             _pth_found=0
 205             for _file in x `find $with_pth -name "pth.h" -type f -print`; do
 206                 test .$_file = .x && continue
 207                 _dir=`echo $_file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'`
 208                 _pth_version=`($_dir/pth-config --version) 2>/dev/null |\
 209                               sed -e 's/^.*\([0-9]\.[0-9]*[ab.][0-9]*\).*$/\1/'`
 210                 if test ".$_pth_version" = .; then
 211                     _pth_version=`grep '^#define PTH_VERSION_STR' $_file |\
 212                                   sed -e 's;^#define[   ]*PTH_VERSION_STR[      ]*"\([0-9]*\.[0-9]*[.ab][0-9]*\)[       ].*$;\1;'`
 213                 fi
 214                 _pth_cppflags="-I$_dir"
 215                 _pth_cflags="-I$_dir"
 216                 _pth_found=`expr $_pth_found + 1`
 217             done
 218             for _file in x `find $with_pth -name "libpth.[aso]" -type f -print`; do
 219                 test .$_file = .x && continue
 220                 _dir=`echo $_file | sed -e 's;[^/]*$;;' -e 's;\(.\)/$;\1;'`
 221                 _pth_ldflags="-L$_dir"
 222                 _pth_libs="-lpth"
 223                 _pth_found=`expr $_pth_found + 1`
 224             done
 225             changequote([, ])dnl
 226             if test ".$_pth_found" = .2; then
 227                 _pth_location="$with_pth"
 228                 _pth_type="uninstalled"
 229             else
 230                 _pth_version=''
 231             fi
 232         fi
 233     fi
 234     _AC_PTH_VERBOSE([+ Determined Location:])
 235     _AC_PTH_VERBOSE([    o path: $_pth_location])
 236     _AC_PTH_VERBOSE([    o type: $_pth_type])
 237     if test ".$_pth_version" = .; then
 238         with_pth=no
 239     else
 240 dnl        if test ".$with_pth" != .yes; then
 241 dnl             _AC_PTH_ERROR([dnl
 242 dnl             Unable to locate GNU Pth under $with_pth.
 243 dnl             Please specify the correct path to either a GNU Pth installation tree
 244 dnl             (use --with-pth=DIR if you used --prefix=DIR for installing GNU Pth in
 245 dnl             the past) or to a GNU Pth source tree (use --with-pth=DIR if DIR is a
 246 dnl             path to a pth-X.Y.Z/ directory; but make sure the package is already
 247 dnl             built, i.e., the "configure; make" step was already performed there).])
 248 dnl        else
 249 dnl             _AC_PTH_ERROR([dnl
 250 dnl             Unable to locate GNU Pth in any system-wide location (see \$PATH).
 251 dnl             Please specify the correct path to either a GNU Pth installation tree
 252 dnl             (use --with-pth=DIR if you used --prefix=DIR for installing GNU Pth in
 253 dnl             the past) or to a GNU Pth source tree (use --with-pth=DIR if DIR is a
 254 dnl             path to a pth-X.Y.Z/ directory; but make sure the package is already
 255 dnl             built, i.e., the "configure; make" step was already performed there).])
 256 dnl        fi
 257 dnl    fi
 258     dnl #
 259     dnl #  Check whether the found version is sufficiently new
 260     dnl #
 261     _req_version="ifelse([$1],,1.0.0,$1)"
 262     for _var in _pth_version _req_version; do
 263         eval "_val=\"\$${_var}\""
 264         _major=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\1/'`
 265         _minor=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\2/'`
 266         _rtype=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\3/'`
 267         _micro=`echo $_val | sed 's/\([[0-9]]*\)\.\([[0-9]]*\)\([[ab.]]\)\([[0-9]]*\)/\4/'`
 268         case $_rtype in
 269             "a" ) _rtype=0 ;;
 270             "b" ) _rtype=1 ;;
 271             "." ) _rtype=2 ;;
 272         esac
 273         _hex=`echo dummy | awk '{ printf("%d%02d%1d%02d", major, minor, rtype, micro); }' \
 274               "major=$_major" "minor=$_minor" "rtype=$_rtype" "micro=$_micro"`
 275         eval "${_var}_hex=\"\$_hex\""
 276     done
 277     _AC_PTH_VERBOSE([+ Determined Versions:])
 278     _AC_PTH_VERBOSE([    o existing: $_pth_version -> 0x$_pth_version_hex])
 279     _AC_PTH_VERBOSE([    o required: $_req_version -> 0x$_req_version_hex])
 280     _ok=0
 281     if test ".$_pth_version_hex" != .; then
 282         if test ".$_req_version_hex" != .; then
 283             if test $_pth_version_hex -ge $_req_version_hex; then
 284                 _ok=1
 285             fi
 286         fi
 287     fi
 288     if test ".$_ok" = .0; then
 289         _AC_PTH_ERROR([dnl
 290         Found Pth version $_pth_version, but required at least version $_req_version.
 291         Upgrade Pth under $_pth_location to $_req_version or higher first, please.])
 292     fi
 293     dnl #
 294     dnl #   Perform Pth Sanity Compile Check
 295     dnl #
 296     if test ".$with_pth_test" = .yes; then
 297         _ac_save_CPPFLAGS="$CPPFLAGS"
 298         _ac_save_CFLAGS="$CFLAGS"
 299         _ac_save_LDFLAGS="$LDFLAGS"
 300         _ac_save_LIBS="$LIBS"
 301         CPPFLAGS="$CPPFLAGS $_pth_cppflags"
 302         CFLAGS="$CFLAGS $_pth_cflags"
 303         LDFLAGS="$LDFLAGS $_pth_ldflags"
 304         LIBS="$LIBS $_pth_libs"
 305         _AC_PTH_VERBOSE([+ Test Build Environment:])
 306         _AC_PTH_VERBOSE([    o CPPFLAGS=\"$CPPFLAGS\"])
 307         _AC_PTH_VERBOSE([    o CFLAGS=\"$CFLAGS\"])
 308         _AC_PTH_VERBOSE([    o LDFLAGS=\"$LDFLAGS\"])
 309         _AC_PTH_VERBOSE([    o LIBS=\"$LIBS\"])
 310         cross_compile=no
 311         define(_code1, [dnl
 312         #include <stdio.h>
 313         #include <pth.h>
 314         ])
 315         define(_code2, [dnl
 316         int main(int argc, char *argv[])
 317         {
 318             FILE *fp;
 319             if (!(fp = fopen("conftestval", "w")))
 320                 exit(1);
 321             fprintf(fp, "hmm");
 322             fclose(fp);
 323             pth_init();
 324             pth_kill();
 325             if (!(fp = fopen("conftestval", "w")))
 326                 exit(1);
 327             fprintf(fp, "yes");
 328             fclose(fp);
 329             exit(0);
 330         }
 331         ])
 332         _AC_PTH_VERBOSE([+ Performing Sanity Checks:])
 333         _AC_PTH_VERBOSE([    o pre-processor test])
 334         AC_TRY_CPP(_code1, _ok=yes, _ok=no)
 335         if test ".$_ok" != .yes; then
 336             _AC_PTH_ERROR([dnl
 337             Found GNU Pth $_pth_version under $_pth_location, but
 338             was unable to perform a sanity pre-processor check. This means
 339             the GNU Pth header pth.h was not found.
 340             We used the following build environment:
 341             >> CPP="$CPP"
 342             >> CPPFLAGS="$CPPFLAGS"
 343             See config.log for possibly more details.])
 344         fi
 345         _AC_PTH_VERBOSE([    o link check])
 346         AC_TRY_LINK(_code1, _code2, _ok=yes, _ok=no)
 347         if test ".$_ok" != .yes; then
 348             _AC_PTH_ERROR([dnl
 349             Found GNU Pth $_pth_version under $_pth_location, but
 350             was unable to perform a sanity linker check. This means
 351             the GNU Pth library libpth.a was not found.
 352             We used the following build environment:
 353             >> CC="$CC"
 354             >> CFLAGS="$CFLAGS"
 355             >> LDFLAGS="$LDFLAGS"
 356             >> LIBS="$LIBS"
 357             See config.log for possibly more details.])
 358         fi
 359         _AC_PTH_VERBOSE([    o run-time check])
 360         AC_TRY_RUN(_code1 _code2, _ok=`cat conftestval`, _ok=no, _ok=no)
 361         if test ".$_ok" != .yes; then
 362             if test ".$_ok" = .no; then
 363                 _AC_PTH_ERROR([dnl
 364                 Found GNU Pth $_pth_version under $_pth_location, but
 365                 was unable to perform a sanity execution check. This usually
 366                 means that the GNU Pth shared library libpth.so is present
 367                 but \$LD_LIBRARY_PATH is incomplete to execute a Pth test.
 368                 In this case either disable this test via --without-pth-test,
 369                 or extend \$LD_LIBRARY_PATH, or build GNU Pth as a static
 370                 library only via its --disable-shared Autoconf option.
 371                 We used the following build environment:
 372                 >> CC="$CC"
 373                 >> CFLAGS="$CFLAGS"
 374                 >> LDFLAGS="$LDFLAGS"
 375                 >> LIBS="$LIBS"
 376                 See config.log for possibly more details.])
 377             else
 378                 _AC_PTH_ERROR([dnl
 379                 Found GNU Pth $_pth_version under $_pth_location, but
 380                 was unable to perform a sanity run-time check. This usually
 381                 means that the GNU Pth library failed to work and possibly
 382                 caused a core dump in the test program. In this case it
 383                 is strongly recommended that you re-install GNU Pth and this
 384                 time make sure that it really passes its "make test" procedure.
 385                 We used the following build environment:
 386                 >> CC="$CC"
 387                 >> CFLAGS="$CFLAGS"
 388                 >> LDFLAGS="$LDFLAGS"
 389                 >> LIBS="$LIBS"
 390                 See config.log for possibly more details.])
 391             fi
 392         fi
 393         _extendvars="ifelse([$4],,yes,$4)"
 394         if test ".$_extendvars" != .yes; then
 395             CPPFLAGS="$_ac_save_CPPFLAGS"
 396             CFLAGS="$_ac_save_CFLAGS"
 397             LDFLAGS="$_ac_save_LDFLAGS"
 398             LIBS="$_ac_save_LIBS"
 399         fi
 400     else
 401         _extendvars="ifelse([$4],,yes,$4)"
 402         if test ".$_extendvars" = .yes; then
 403             if test ".$_pth_subdir" = .yes; then
 404                 CPPFLAGS="$CPPFLAGS $_pth_cppflags"
 405                 CFLAGS="$CFLAGS $_pth_cflags"
 406                 LDFLAGS="$LDFLAGS $_pth_ldflags"
 407                 LIBS="$LIBS $_pth_libs"
 408             fi
 409         fi
 410     fi
 411     PTH_CPPFLAGS="$_pth_cppflags"
 412     PTH_CFLAGS="$_pth_cflags"
 413     PTH_LDFLAGS="$_pth_ldflags"
 414     PTH_LIBS="$_pth_libs"
 415     AC_SUBST(PTH_CPPFLAGS)
 416     AC_SUBST(PTH_CFLAGS)
 417     AC_SUBST(PTH_LDFLAGS)
 418     AC_SUBST(PTH_LIBS)
 419     _AC_PTH_VERBOSE([+ Final Results:])
 420     _AC_PTH_VERBOSE([    o PTH_CPPFLAGS=\"$PTH_CPPFLAGS\"])
 421     _AC_PTH_VERBOSE([    o PTH_CFLAGS=\"$PTH_CFLAGS\"])
 422     _AC_PTH_VERBOSE([    o PTH_LDFLAGS=\"$PTH_LDFLAGS\"])
 423     _AC_PTH_VERBOSE([    o PTH_LIBS=\"$PTH_LIBS\"])
 424 fi
 425 fi
 426 if test ".$with_pth" != .no; then
 427     AC_MSG_RESULT([version $_pth_version, $_pth_type under $_pth_location])
 428     ifelse([$5], , :, [$5])
 429 else
 430     AC_MSG_RESULT([no])
 431     ifelse([$6], , :, [$6])
 432 fi
 433 ])
 434
 435 dnl GNUPG_CHECK_VA_COPY()
 436 dnl   Do some check on how to implement va_copy.
 437 dnl   May define MUST_COPY_VA_BY_VAL.
 438 dnl   Actual test code taken from glib-1.1.
 439 AC_DEFUN(GNUPG_CHECK_VA_COPY,
 440 [ AC_MSG_CHECKING(whether va_lists must be copied by value)
 441   AC_CACHE_VAL(gnupg_cv_must_copy_va_byval,[
 442     gnupg_cv_must_copy_va_byval=no
 443     AC_TRY_RUN([
 444        #include <stdarg.h>
 445        void f (int i, ...)
 446        {
 447           va_list args1, args2;
 448           va_start (args1, i);
 449           args2 = args1;
 450           if (va_arg (args2, int) != 42 || va_arg (args1, int) != 42)
 451             exit (1);
 452           va_end (args1);
 453           va_end (args2);
 454        }
 455
 456        int main()
 457        {
 458           f (0, 42);
 459             return 0;
 460        }
 461     ],gnupg_cv_must_copy_va_byval=yes)
 462   ])
 463   if test "$gnupg_cv_must_copy_va_byval" = yes; then
 464      AC_DEFINE(MUST_COPY_VA_BYVAL,1,[used to implement the va_copy macro])
 465   fi
 466   AC_MSG_RESULT($gnupg_cv_must_copy_va_byval)
 467 ])
 468
 469
 470 # glibc21.m4 serial 2 (fileutils-4.1.3, gettext-0.10.40)
 471 dnl Copyright (C) 2000-2002 Free Software Foundation, Inc.
 472 dnl This file is free software, distributed under the terms of the GNU
 473 dnl General Public License.  As a special exception to the GNU General
 474 dnl Public License, this file may be distributed as part of a program
 475 dnl that contains a configuration script generated by Autoconf, under
 476 dnl the same distribution terms as the rest of that program.
 477
 478 # Test for the GNU C Library, version 2.1 or newer.
 479 # From Bruno Haible.
 480
 481 AC_DEFUN([jm_GLIBC21],
 482   [
 483     AC_CACHE_CHECK(whether we are using the GNU C Library 2.1 or newer,
 484       ac_cv_gnu_library_2_1,
 485       [AC_EGREP_CPP([Lucky GNU user],
 486         [
 487 #include <features.h>
 488 #ifdef __GNU_LIBRARY__
 489  #if (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 1) || (__GLIBC__ > 2)
 490   Lucky GNU user
 491  #endif
 492 #endif
 493         ],
 494         ac_cv_gnu_library_2_1=yes,
 495         ac_cv_gnu_library_2_1=no)
 496       ]
 497     )
 498     AC_SUBST(GLIBC21)
 499     GLIBC21="$ac_cv_gnu_library_2_1"
 500   ]
 501 )
 502
 503
 504 dnl AM_PATH_GPG_ERROR([MINIMUM-VERSION,
 505 dnl                   [ACTION-IF-FOUND [, ACTION-IF-NOT-FOUND ]]])
 506 dnl Test for libgpg-error and define GPG_ERROR_CFLAGS and GPG_ERROR_LIBS
 507 dnl
 508 dnl taken from libgpg-error 0.6
 509 dnl
 510 AC_DEFUN(AM_PATH_GPG_ERROR,
 511 [ AC_ARG_WITH(gpg-error-prefix,
 512             AC_HELP_STRING([--with-gpg-error-prefix=PFX],
 513                            [prefix where GPG Error is installed (optional)]),
 514      gpg_error_config_prefix="$withval", gpg_error_config_prefix="")
 515   if test x$gpg_error_config_prefix != x ; then
 516      if test x${GPG_ERROR_CONFIG+set} != xset ; then
 517         GPG_ERROR_CONFIG=$gpg_error_config_prefix/bin/gpg-error-config
 518      fi
 519   fi
 520
 521   AC_PATH_PROG(GPG_ERROR_CONFIG, gpg-error-config, no)
 522   min_gpg_error_version=ifelse([$1], ,0.0,$1)
 523   AC_MSG_CHECKING(for GPG Error - version >= $min_gpg_error_version)
 524   ok=no
 525   if test "$GPG_ERROR_CONFIG" != "no" ; then
 526     req_major=`echo $min_gpg_error_version | \
 527                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\1/'`
 528     req_minor=`echo $min_gpg_error_version | \
 529                sed 's/\([[0-9]]*\)\.\([[0-9]]*\)/\2/'`
 530     gpg_error_config_version=`$GPG_ERROR_CONFIG $gpg_error_config_args --version`
 531     major=`echo $gpg_error_config_version | \
 532                sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\1/'`
 533     minor=`echo $gpg_error_config_version | \
 534                sed 's/\([[0-9]]*\)\.\([[0-9]]*\).*/\2/'`
 535     if test "$major" -gt "$req_major"; then
 536         ok=yes
 537     else
 538         if test "$major" -eq "$req_major"; then
 539             if test "$minor" -ge "$req_minor"; then
 540                ok=yes
 541             fi
 542         fi
 543     fi
 544   fi
 545   if test $ok = yes; then
 546     GPG_ERROR_CFLAGS=`$GPG_ERROR_CONFIG $gpg_error_config_args --cflags`
 547     GPG_ERROR_LIBS=`$GPG_ERROR_CONFIG $gpg_error_config_args --libs`
 548     AC_MSG_RESULT(yes)
 549     ifelse([$2], , :, [$2])
 550   else
 551     GPG_ERROR_CFLAGS=""
 552     GPG_ERROR_LIBS=""
 553     AC_MSG_RESULT(no)
 554     ifelse([$3], , :, [$3])
 555   fi
 556   AC_SUBST(GPG_ERROR_CFLAGS)
 557   AC_SUBST(GPG_ERROR_LIBS)
 558 ])
 559
 560