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dnl macros to configure Libgcrypt
dnl Copyright (C) 1998, 1999, 2000, 2001, 2002,
dnl 2003 Free Software Foundation, Inc.
dnl Copyright (C) 2013 g10 Code GmbH
dnl
dnl This file is part of Libgcrypt.
dnl
dnl Libgcrypt is free software; you can redistribute it and/or modify
dnl it under the terms of the GNU Lesser General Public License as
dnl published by the Free Software Foundation; either version 2.1 of
dnl the License, or (at your option) any later version.
dnl
dnl Libgcrypt 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 Lesser General Public License for more details.
dnl
dnl You should have received a copy of the GNU Lesser General Public
dnl License along with this program; if not, see <https://www.gnu.org/licenses/>.
dnl SPDX-License-Identifier: LGPL-2.1-or-later
dnl GCRY_MSG_SHOW(PREFIX,STRING)
dnl Print a message with a prefix.
dnl
define([GCRY_MSG_SHOW],
[
echo " $1 $2" 1>&AS_MESSAGE_FD([])
])
dnl GCRY_MSG_WRAP(PREFIX, ALGOLIST)
dnl Print a nicely formatted list of algorithms
dnl with an appropriate line wrap.
dnl
define([GCRY_MSG_WRAP],
[
tmp=" $1"
tmpi="abc"
if test "${#tmpi}" -ne 3 >/dev/null 2>&1 ; then
dnl Without a POSIX shell, we don't botter to wrap it
echo "$tmp $2" 1>&AS_MESSAGE_FD([])
else
tmpi=`echo "$tmp"| sed 's/./ /g'`
echo $2 EOF | tr ' ' '\n' | \
while read word; do
if test "${#tmp}" -gt 70 ; then
echo "$tmp" 1>&AS_MESSAGE_FD([])
tmp="$tmpi"
fi
if test "$word" = "EOF" ; then
echo "$tmp" 1>&AS_MESSAGE_FD([])
else
tmp="$tmp $word"
fi
done
fi
])
#
# GNUPG_SYS_SYMBOL_UNDERSCORE
# Does the compiler prefix global symbols with an underscore?
#
# Taken from GnuPG 1.2 and modified to use the libtool macros.
AC_DEFUN([GNUPG_SYS_SYMBOL_UNDERSCORE],
[tmp_do_check="no"
case "${host}" in
i?86-mingw32* | i?86-*-mingw32*)
ac_cv_sys_symbol_underscore=yes
;;
x86_64-*-mingw32*)
ac_cv_sys_symbol_underscore=no
;;
i386-emx-os2 | i[3456]86-pc-os2*emx | i386-pc-msdosdjgpp)
ac_cv_sys_symbol_underscore=yes
;;
*)
if test "$cross_compiling" != yes; then
tmp_do_check="yes"
fi
;;
esac
if test "$tmp_do_check" = "yes"; then
AC_REQUIRE([AC_LIBTOOL_SYS_GLOBAL_SYMBOL_PIPE])
AC_MSG_CHECKING([for _ prefix in compiled symbols])
AC_CACHE_VAL(ac_cv_sys_symbol_underscore,
[ac_cv_sys_symbol_underscore=no
cat > conftest.$ac_ext <<EOF
void nm_test_func(){}
int main(){nm_test_func;return 0;}
EOF
if AC_TRY_EVAL(ac_compile); then
# Now try to grab the symbols.
ac_nlist=conftest.nm
if AC_TRY_EVAL(NM conftest.$ac_objext \| $lt_cv_sys_global_symbol_pipe \| cut -d \' \' -f 2 \> $ac_nlist) && test -s "$ac_nlist"; then
# See whether the symbols have a leading underscore.
if egrep '^_nm_test_func' "$ac_nlist" >/dev/null; then
ac_cv_sys_symbol_underscore=yes
else
if egrep '^nm_test_func ' "$ac_nlist" >/dev/null; then
:
else
echo "configure: cannot find nm_test_func in $ac_nlist" >&AS_MESSAGE_LOG_FD
fi
fi
else
echo "configure: cannot run $lt_cv_sys_global_symbol_pipe" >&AS_MESSAGE_LOG_FD
fi
else
echo "configure: failed program was:" >&AS_MESSAGE_LOG_FD
cat conftest.c >&AS_MESSAGE_LOG_FD
fi
rm -rf conftest*
])
else
AC_MSG_CHECKING([for _ prefix in compiled symbols])
fi
AC_MSG_RESULT($ac_cv_sys_symbol_underscore)
if test x$ac_cv_sys_symbol_underscore = xyes; then
AC_DEFINE(WITH_SYMBOL_UNDERSCORE,1,
[Defined if compiled symbols have a leading underscore])
fi
])
######################################################################
# Check whether mlock is broken (hpux 10.20 raises a SIGBUS if mlock
# is not called from uid 0 (not tested whether uid 0 works)
# For DECs Tru64 we have also to check whether mlock is in librt
# mlock is there a macro using memlk()
######################################################################
dnl GNUPG_CHECK_MLOCK
dnl
define(GNUPG_CHECK_MLOCK,
[ AC_CHECK_FUNCS(mlock)
if test "$ac_cv_func_mlock" = "no"; then
AC_CHECK_HEADERS(sys/mman.h)
if test "$ac_cv_header_sys_mman_h" = "yes"; then
# Add librt to LIBS:
AC_CHECK_LIB(rt, memlk)
AC_CACHE_CHECK([whether mlock is in sys/mman.h],
gnupg_cv_mlock_is_in_sys_mman,
[AC_LINK_IFELSE(
[AC_LANG_PROGRAM([[
#include <assert.h>
#ifdef HAVE_SYS_MMAN_H
#include <sys/mman.h>
#endif
]], [[
int i;
/* glibc defines this for functions which it implements
* to always fail with ENOSYS. Some functions are actually
* named something starting with __ and the normal name
* is an alias. */
#if defined (__stub_mlock) || defined (__stub___mlock)
choke me
#else
mlock(&i, 4);
#endif
; return 0;
]])],
gnupg_cv_mlock_is_in_sys_mman=yes,
gnupg_cv_mlock_is_in_sys_mman=no)])
if test "$gnupg_cv_mlock_is_in_sys_mman" = "yes"; then
AC_DEFINE(HAVE_MLOCK,1,
[Defined if the system supports an mlock() call])
fi
fi
fi
if test "$ac_cv_func_mlock" = "yes"; then
AC_CHECK_FUNCS(sysconf getpagesize)
AC_MSG_CHECKING(whether mlock is broken)
AC_CACHE_VAL(gnupg_cv_have_broken_mlock,
AC_RUN_IFELSE([AC_LANG_SOURCE([[
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/mman.h>
#include <sys/types.h>
#include <fcntl.h>
int main()
{
char *pool;
int err;
long int pgsize;
#if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE)
pgsize = sysconf (_SC_PAGESIZE);
#elif defined (HAVE_GETPAGESIZE)
pgsize = getpagesize();
#else
pgsize = -1;
#endif
if (pgsize == -1)
pgsize = 4096;
pool = malloc( 4096 + pgsize );
if( !pool )
return 2;
pool += (pgsize - ((size_t)pool % pgsize));
err = mlock( pool, 4096 );
if( !err || errno == EPERM || errno == EAGAIN)
return 0; /* okay */
return 1; /* hmmm */
}
]])],
gnupg_cv_have_broken_mlock="no",
gnupg_cv_have_broken_mlock="yes",
gnupg_cv_have_broken_mlock="assume-no"
)
)
if test "$gnupg_cv_have_broken_mlock" = "yes"; then
AC_DEFINE(HAVE_BROKEN_MLOCK,1,
[Defined if the mlock() call does not work])
AC_MSG_RESULT(yes)
else
if test "$gnupg_cv_have_broken_mlock" = "no"; then
AC_MSG_RESULT(no)
else
AC_MSG_RESULT(assuming no)
fi
fi
fi
])
dnl LIST_MEMBER()
dnl Check whether an element ist contained in a list. Set `found' to
dnl `1' if the element is found in the list, to `0' otherwise.
AC_DEFUN([LIST_MEMBER],
[
name=$1
list=$2
found=0
for n in $list; do
if test "x$name" = "x$n"; then
found=1
fi
done
])
|
