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acinclude.m4
244 строки
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NIIBE Yutaka
m4: Fix acinclude.m4 for underscore detection in the symbol.
24 июн 2024, 04:12
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24 июн 2024, 04:12
bb0895b
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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.$ac_ext <<EOF void nm_test_func(void){} int main(void){nm_test_func();return 0;} EOF if AC_TRY_EVAL(ac_compile); then # Now try to grab the symbols. ac_nlist=conftest.nm if AC_TRY_EVAL(NM conftest.$ac_objext \| "$lt_cv_sys_global_symbol_pipe" \> $ac_nlist) && test -s "$ac_nlist"; then # See whether the symbols have a leading underscore. if $GREP '^. _nm_test_func' "$ac_nlist" >/dev/null; then ac_cv_sys_symbol_underscore=yes else if $GREP '^. nm_test_func ' "$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 "$ac_cv_func_mlock" = "yes"; then AC_CHECK_FUNCS(sysconf getpagesize) AC_MSG_CHECKING(whether mlock is broken) AC_CACHE_VAL(gnupg_cv_have_broken_mlock, AC_RUN_IFELSE([AC_LANG_SOURCE([[ #include <stdlib.h> #include <unistd.h> #include <errno.h> #include <sys/mman.h> #include <sys/types.h> #include <fcntl.h> int main(void) { char *pool; int err; long int pgsize; #if defined(HAVE_SYSCONF) && defined(_SC_PAGESIZE) pgsize = sysconf (_SC_PAGESIZE); #elif defined (HAVE_GETPAGESIZE) pgsize = getpagesize(); #else pgsize = -1; #endif if (pgsize == -1) pgsize = 4096; pool = malloc( 4096 + pgsize ); if( !pool ) return 2; pool += (pgsize - ((size_t)pool % pgsize)); err = mlock( pool, 4096 ); if( !err || errno == EPERM || errno == EAGAIN) return 0; /* okay */ return 1; /* hmmm */ } ]])], gnupg_cv_have_broken_mlock="no", gnupg_cv_have_broken_mlock="yes", gnupg_cv_have_broken_mlock="assume-no" ) ) if test "$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 ])