mirror of git://git.gnupg.org/gnupg.git
751 lines
22 KiB
Plaintext
751 lines
22 KiB
Plaintext
dnl macros to configure gnupg
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dnl Copyright (C) 1998, 1999, 2000, 2001, 2003 Free Software Foundation, Inc.
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dnl
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dnl This file is part of GnuPG.
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dnl
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dnl GnuPG is free software; you can redistribute it and/or modify
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dnl it under the terms of the GNU General Public License as published by
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dnl the Free Software Foundation; either version 2 of the License, or
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dnl (at your option) any later version.
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dnl
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dnl GnuPG is distributed in the hope that it will be useful,
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dnl but WITHOUT ANY WARRANTY; without even the implied warranty of
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dnl MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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dnl GNU General Public License for more details.
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dnl
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dnl You should have received a copy of the GNU General Public License
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dnl along with this program; if not, write to the Free Software
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dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
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dnl GNUPG_MSG_PRINT(STRING)
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dnl print a message
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dnl
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define(GNUPG_MSG_PRINT,
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[ echo $ac_n "$1"" $ac_c" 1>&AC_FD_MSG
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])
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dnl GNUPG_CHECK_TYPEDEF(TYPE, HAVE_NAME)
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dnl Check whether a typedef exists and create a #define $2 if it exists
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dnl
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AC_DEFUN(GNUPG_CHECK_TYPEDEF,
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[ AC_MSG_CHECKING(for $1 typedef)
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AC_CACHE_VAL(gnupg_cv_typedef_$1,
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[AC_TRY_COMPILE([#define _GNU_SOURCE 1
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#include <stdlib.h>
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#include <sys/types.h>], [
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#undef $1
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int a = sizeof($1);
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], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )])
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AC_MSG_RESULT($gnupg_cv_typedef_$1)
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if test "$gnupg_cv_typedef_$1" = yes; then
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AC_DEFINE($2,1,[Defined if a `]$1[' is typedef'd])
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fi
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])
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dnl GNUPG_CHECK_GNUMAKE
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dnl
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AC_DEFUN(GNUPG_CHECK_GNUMAKE,
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[
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if ${MAKE-make} --version 2>/dev/null | grep '^GNU ' >/dev/null 2>&1; then
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:
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else
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AC_MSG_WARN([[
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***
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*** It seems that you are not using GNU make. Some make tools have serious
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*** flaws and you may not be able to build this software at all. Before you
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*** complain, please try GNU make: GNU make is easy to build and available
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*** at all GNU archives. It is always available from ftp.gnu.org:/gnu/make.
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***]])
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fi
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])
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dnl GNUPG_CHECK_FAQPROG
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dnl
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AC_DEFUN(GNUPG_CHECK_FAQPROG,
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[ AC_MSG_CHECKING(for faqprog.pl)
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if faqprog.pl -V 2>/dev/null | grep '^faqprog.pl ' >/dev/null 2>&1; then
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working_faqprog=yes
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FAQPROG="faqprog.pl"
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else
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working_faqprog=no
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FAQPROG=": "
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fi
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AC_MSG_RESULT($working_faqprog)
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AC_SUBST(FAQPROG)
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AM_CONDITIONAL(WORKING_FAQPROG, test "$working_faqprog" = "yes" )
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dnl if test $working_faqprog = no; then
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dnl AC_MSG_WARN([[
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dnl ***
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dnl *** It seems that the faqprog.pl program is not installed;
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dnl *** however it is only needed if you want to change the FAQ.
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dnl *** (faqprog.pl should be available at:
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dnl *** ftp://ftp.gnupg.org/gcrypt/contrib/faqprog.pl )
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dnl *** No need to worry about this warning.
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dnl ***]])
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dnl fi
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])
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dnl GNUPG_CHECK_DOCBOOK_TO_TEXI
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dnl
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AC_DEFUN(GNUPG_CHECK_DOCBOOK_TO_TEXI,
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[
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AC_CHECK_PROG(DOCBOOK_TO_TEXI, docbook2texi, yes, no)
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AC_MSG_CHECKING(for sgml to texi tools)
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working_sgmltotexi=no
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if test "$ac_cv_prog_DOCBOOK_TO_TEXI" = yes; then
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if sgml2xml -v /dev/null 2>&1 | grep 'SP version' >/dev/null 2>&1 ; then
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working_sgmltotexi=yes
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fi
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fi
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AC_MSG_RESULT($working_sgmltotexi)
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AM_CONDITIONAL(HAVE_DOCBOOK_TO_TEXI, test "$working_sgmltotexi" = "yes" )
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])
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dnl GNUPG_CHECK_ENDIAN
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dnl define either LITTLE_ENDIAN_HOST or BIG_ENDIAN_HOST
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dnl
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define(GNUPG_CHECK_ENDIAN,
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[
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tmp_assumed_endian=big
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if test "$cross_compiling" = yes; then
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case "$host_cpu" in
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i@<:@345678@:>@* )
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tmp_assumed_endian=little
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;;
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*)
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;;
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esac
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AC_MSG_WARN(cross compiling; assuming $tmp_assumed_endian endianess)
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fi
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AC_MSG_CHECKING(endianess)
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AC_CACHE_VAL(gnupg_cv_c_endian,
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[ gnupg_cv_c_endian=unknown
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# See if sys/param.h defines the BYTE_ORDER macro.
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AC_TRY_COMPILE([#include <sys/types.h>
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#include <sys/param.h>], [
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#if !BYTE_ORDER || !BIG_ENDIAN || !LITTLE_ENDIAN
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bogus endian macros
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#endif], [# It does; now see whether it defined to BIG_ENDIAN or not.
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AC_TRY_COMPILE([#include <sys/types.h>
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#include <sys/param.h>], [
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#if BYTE_ORDER != BIG_ENDIAN
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not big endian
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#endif], gnupg_cv_c_endian=big, gnupg_cv_c_endian=little)])
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if test "$gnupg_cv_c_endian" = unknown; then
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AC_TRY_RUN([main () {
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/* Are we little or big endian? From Harbison&Steele. */
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union
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{
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long l;
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char c[sizeof (long)];
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} u;
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u.l = 1;
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exit (u.c[sizeof (long) - 1] == 1);
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}],
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gnupg_cv_c_endian=little,
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gnupg_cv_c_endian=big,
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gnupg_cv_c_endian=$tmp_assumed_endian
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)
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fi
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])
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AC_MSG_RESULT([$gnupg_cv_c_endian])
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if test "$gnupg_cv_c_endian" = little; then
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AC_DEFINE(LITTLE_ENDIAN_HOST,1,
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[Defined if the host has little endian byte ordering])
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else
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AC_DEFINE(BIG_ENDIAN_HOST,1,
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[Defined if the host has big endian byte ordering])
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fi
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])
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dnl GNUPG_CHECK_CACHE
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dnl
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define(GNUPG_CHECK_CACHE,
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[ AC_MSG_CHECKING(cached information)
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gnupg_hostcheck="$target"
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AC_CACHE_VAL(gnupg_cv_hostcheck, [ gnupg_cv_hostcheck="$gnupg_hostcheck" ])
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if test "$gnupg_cv_hostcheck" != "$gnupg_hostcheck"; then
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AC_MSG_RESULT(changed)
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AC_MSG_WARN(config.cache exists!)
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AC_MSG_ERROR(you must do 'make distclean' first to compile for
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different target or different parameters.)
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else
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AC_MSG_RESULT(ok)
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fi
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])
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######################################################################
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# Check for -fPIC etc (taken from libtool)
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# This sets CFLAGS_PIC to the required flags
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# NO_PIC to yes if it is not possible to
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# generate PIC
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######################################################################
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dnl GNUPG_CHECK_PIC
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dnl
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define(GNUPG_CHECK_PIC,
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[ AC_MSG_CHECKING(for option to create PIC)
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CFLAGS_PIC=
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NO_PIC=no
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if test "$cross_compiling" = yes; then
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AC_MSG_RESULT(assume none)
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else
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if test "$GCC" = yes; then
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CFLAGS_PIC="-fPIC"
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else
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case "$host_os" in
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aix3* | aix4*)
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# All rs/6000 code is PIC
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# but is there any non-rs/6000 AIX platform?
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;;
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hpux9* | hpux10*)
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CFLAGS_PIC="+Z"
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;;
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irix5* | irix6*)
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# PIC (with -KPIC) is the default.
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;;
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osf3* | osf4*)
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# FIXME - pic_flag is probably required for
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# hppa*-osf* and i860-osf*
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;;
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sco3.2v5*)
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CFLAGS_PIC='-Kpic'
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;;
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solaris2* | solaris7* )
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CFLAGS_PIC='-KPIC'
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;;
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sunos4*)
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CFLAGS_PIC='-PIC'
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;;
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*)
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NO_PIC=yes
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;;
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esac
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fi
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case "$host_cpu" in
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rs6000 | powerpc | powerpcle)
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# Yippee! All RS/6000 and PowerPC code is position-independent.
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CFLAGS_PIC=""
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;;
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esac
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if test "$NO_PIC" = yes; then
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AC_MSG_RESULT(not possible)
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else
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if test -z "$CFLAGS_PIC"; then
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AC_MSG_RESULT(none)
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else
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AC_MSG_RESULT($CFLAGS_PIC)
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fi
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fi
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fi
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])
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######################################################################
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# Check for export-dynamic flag
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# This sets CFLAGS_EXPORTDYNAMIC to the required flags
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######################################################################
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dnl GNUPG_CHECK_EXPORTDYNAMIC
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dnl
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define(GNUPG_CHECK_EXPORTDYNAMIC,
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[ AC_MSG_CHECKING(how to specify -export-dynamic)
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if test "$cross_compiling" = yes; then
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AC_MSG_RESULT(assume none)
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CFLAGS_EXPORTDYNAMIC=""
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else
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AC_CACHE_VAL(gnupg_cv_export_dynamic,[
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if AC_TRY_COMMAND([${CC-cc} $CFLAGS -Wl,--version 2>&1 |
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grep "GNU ld" >/dev/null]); then
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# using gnu's linker
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gnupg_cv_export_dynamic="-Wl,-export-dynamic"
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else
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case "$host_os" in
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hpux* )
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gnupg_cv_export_dynamic="-Wl,-E"
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;;
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* )
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gnupg_cv_export_dynamic=""
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;;
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esac
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fi
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])
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AC_MSG_RESULT($gnupg_cv_export_dynamic)
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CFLAGS_EXPORTDYNAMIC="$gnupg_cv_export_dynamic"
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fi
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])
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#####################################################################
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# Check for SysV IPC (from GIMP)
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# And see whether we have a SHM_LOCK (FreeBSD does not have it).
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#####################################################################
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dnl GNUPG_CHECK_IPC
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dnl
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define(GNUPG_CHECK_IPC,
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[ AC_CHECK_HEADERS(sys/ipc.h sys/shm.h)
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if test "$ac_cv_header_sys_shm_h" = "yes"; then
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AC_MSG_CHECKING(whether IPC_RMID allowes subsequent attaches)
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AC_CACHE_VAL(gnupg_cv_ipc_rmid_deferred_release,
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AC_TRY_RUN([
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#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>
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int main()
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{
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int id;
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char *shmaddr;
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id = shmget (IPC_PRIVATE, 4, IPC_CREAT | 0777);
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if (id == -1)
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exit (2);
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shmaddr = shmat (id, 0, 0);
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shmctl (id, IPC_RMID, 0);
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if ((char*) shmat (id, 0, 0) == (char*) -1)
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{
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shmdt (shmaddr);
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exit (1);
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}
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shmdt (shmaddr);
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shmdt (shmaddr);
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exit (0);
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}
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],
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gnupg_cv_ipc_rmid_deferred_release="yes",
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gnupg_cv_ipc_rmid_deferred_release="no",
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gnupg_cv_ipc_rmid_deferred_release="assume-no")
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)
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if test "$gnupg_cv_ipc_rmid_deferred_release" = "yes"; then
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AC_DEFINE(IPC_RMID_DEFERRED_RELEASE,1,
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[Defined if we can do a deferred shm release])
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AC_MSG_RESULT(yes)
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else
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if test "$gnupg_cv_ipc_rmid_deferred_release" = "no"; then
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AC_MSG_RESULT(no)
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else
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AC_MSG_RESULT([assuming no])
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fi
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fi
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AC_MSG_CHECKING(whether SHM_LOCK is available)
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AC_CACHE_VAL(gnupg_cv_ipc_have_shm_lock,
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AC_TRY_COMPILE([#include <sys/types.h>
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#include <sys/ipc.h>
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#include <sys/shm.h>],[
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int shm_id;
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shmctl(shm_id, SHM_LOCK, 0);
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],
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gnupg_cv_ipc_have_shm_lock="yes",
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gnupg_cv_ipc_have_shm_lock="no"
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)
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)
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if test "$gnupg_cv_ipc_have_shm_lock" = "yes"; then
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AC_DEFINE(IPC_HAVE_SHM_LOCK,1,
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[Defined if a SysV shared memory supports the LOCK flag])
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AC_MSG_RESULT(yes)
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else
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AC_MSG_RESULT(no)
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fi
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fi
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])
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######################################################################
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# Check whether mlock is broken (hpux 10.20 raises a SIGBUS if mlock
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# is not called from uid 0 (not tested whether uid 0 works)
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# For DECs Tru64 we have also to check whether mlock is in librt
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# mlock is there a macro using memlk()
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######################################################################
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dnl GNUPG_CHECK_MLOCK
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dnl
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define(GNUPG_CHECK_MLOCK,
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[ AC_CHECK_FUNCS(mlock)
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if test "$ac_cv_func_mlock" = "no"; then
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AC_CHECK_HEADERS(sys/mman.h)
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if test "$ac_cv_header_sys_mman_h" = "yes"; then
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# Add librt to LIBS:
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AC_CHECK_LIB(rt, memlk)
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AC_CACHE_CHECK([whether mlock is in sys/mman.h],
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gnupg_cv_mlock_is_in_sys_mman,
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[AC_TRY_LINK([
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#include <assert.h>
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#ifdef HAVE_SYS_MMAN_H
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#include <sys/mman.h>
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#endif
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], [
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int i;
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/* glibc defines this for functions which it implements
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* to always fail with ENOSYS. Some functions are actually
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* named something starting with __ and the normal name
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* is an alias. */
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#if defined (__stub_mlock) || defined (__stub___mlock)
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choke me
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#else
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mlock(&i, 4);
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#endif
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; return 0;
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],
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gnupg_cv_mlock_is_in_sys_mman=yes,
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gnupg_cv_mlock_is_in_sys_mman=no)])
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if test "$gnupg_cv_mlock_is_in_sys_mman" = "yes"; then
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AC_DEFINE(HAVE_MLOCK,1,
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[Defined if the system supports an mlock() call])
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fi
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fi
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fi
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if test "$ac_cv_func_mlock" = "yes"; then
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AC_MSG_CHECKING(whether mlock is broken)
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AC_CACHE_VAL(gnupg_cv_have_broken_mlock,
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AC_TRY_RUN([
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#include <stdlib.h>
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#include <unistd.h>
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#include <errno.h>
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#include <sys/mman.h>
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#include <sys/types.h>
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#include <fcntl.h>
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int main()
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{
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char *pool;
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int err;
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long int pgsize = getpagesize();
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pool = malloc( 4096 + pgsize );
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if( !pool )
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return 2;
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pool += (pgsize - ((long int)pool % pgsize));
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err = mlock( pool, 4096 );
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if( !err || errno == EPERM )
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return 0; /* okay */
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return 1; /* hmmm */
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}
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],
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gnupg_cv_have_broken_mlock="no",
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gnupg_cv_have_broken_mlock="yes",
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gnupg_cv_have_broken_mlock="assume-no"
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)
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)
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if test "$gnupg_cv_have_broken_mlock" = "yes"; then
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AC_DEFINE(HAVE_BROKEN_MLOCK,1,
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[Defined if the mlock() call does not work])
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AC_MSG_RESULT(yes)
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AC_CHECK_FUNCS(plock)
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else
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if test "$gnupg_cv_have_broken_mlock" = "no"; then
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AC_MSG_RESULT(no)
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else
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AC_MSG_RESULT(assuming no)
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fi
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fi
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fi
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])
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################################################################
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# GNUPG_PROG_NM - find the path to a BSD-compatible name lister
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AC_DEFUN(GNUPG_PROG_NM,
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[AC_MSG_CHECKING([for BSD-compatible nm])
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AC_CACHE_VAL(ac_cv_path_NM,
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[if test -n "$NM"; then
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# Let the user override the test.
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ac_cv_path_NM="$NM"
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else
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IFS="${IFS= }"; ac_save_ifs="$IFS"; IFS="${IFS}:"
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for ac_dir in /usr/ucb /usr/ccs/bin $PATH /bin; do
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test -z "$ac_dir" && ac_dir=.
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if test -f $ac_dir/nm; then
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# Check to see if the nm accepts a BSD-compat flag.
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# Adding the `sed 1q' prevents false positives on HP-UX, which says:
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# nm: unknown option "B" ignored
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if ($ac_dir/nm -B /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then
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ac_cv_path_NM="$ac_dir/nm -B"
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elif ($ac_dir/nm -p /dev/null 2>&1 | sed '1q'; exit 0) | egrep /dev/null >/dev/null; then
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ac_cv_path_NM="$ac_dir/nm -p"
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else
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ac_cv_path_NM="$ac_dir/nm"
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fi
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break
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fi
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done
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IFS="$ac_save_ifs"
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test -z "$ac_cv_path_NM" && ac_cv_path_NM=nm
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fi])
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NM="$ac_cv_path_NM"
|
|
AC_MSG_RESULT([$NM])
|
|
AC_SUBST(NM)
|
|
])
|
|
|
|
# GNUPG_SYS_NM_PARSE - Check for command ro grab the raw symbol name followed
|
|
# by C symbol name from nm.
|
|
AC_DEFUN(GNUPG_SYS_NM_PARSE,
|
|
[AC_REQUIRE([AC_CANONICAL_HOST])dnl
|
|
AC_REQUIRE([GNUPG_PROG_NM])dnl
|
|
# Check for command to grab the raw symbol name followed by C symbol from nm.
|
|
AC_MSG_CHECKING([command to parse $NM output])
|
|
AC_CACHE_VAL(ac_cv_sys_global_symbol_pipe,
|
|
[# These are sane defaults that work on at least a few old systems.
|
|
# {They come from Ultrix. What could be older than Ultrix?!! ;)}
|
|
|
|
changequote(,)dnl
|
|
# Character class describing NM global symbol codes.
|
|
ac_symcode='[BCDEGRSTU]'
|
|
|
|
# Regexp to match symbols that can be accessed directly from C.
|
|
ac_sympat='\([_A-Za-z][_A-Za-z0-9]*\)'
|
|
|
|
# Transform the above into a raw symbol and a C symbol.
|
|
ac_symxfrm='\1 \1'
|
|
|
|
# Define system-specific variables.
|
|
case "$host_os" in
|
|
aix*)
|
|
ac_symcode='[BCDTU]'
|
|
;;
|
|
freebsd* | netbsd* | openbsd* | bsdi* | sunos* | cygwin32* | mingw32*)
|
|
ac_sympat='_\([_A-Za-z][_A-Za-z0-9]*\)'
|
|
ac_symxfrm='_\1 \1'
|
|
;;
|
|
irix*)
|
|
# Cannot use undefined symbols on IRIX because inlined functions mess us up.
|
|
ac_symcode='[BCDEGRST]'
|
|
;;
|
|
solaris*)
|
|
ac_symcode='[BDTU]'
|
|
;;
|
|
esac
|
|
|
|
# If we're using GNU nm, then use its standard symbol codes.
|
|
if $NM -V 2>&1 | egrep '(GNU|with BFD)' > /dev/null; then
|
|
ac_symcode='[ABCDGISTUW]'
|
|
fi
|
|
|
|
case "$host_os" in
|
|
cygwin32* | mingw32*)
|
|
# We do not want undefined symbols on cygwin32. The user must
|
|
# arrange to define them via -l arguments.
|
|
ac_symcode='[ABCDGISTW]'
|
|
;;
|
|
esac
|
|
changequote([,])dnl
|
|
|
|
# Write the raw and C identifiers.
|
|
ac_cv_sys_global_symbol_pipe="sed -n -e 's/^.* $ac_symcode $ac_sympat$/$ac_symxfrm/p'"
|
|
|
|
# Check to see that the pipe works correctly.
|
|
ac_pipe_works=no
|
|
cat > conftest.$ac_ext <<EOF
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
char nm_test_var;
|
|
void nm_test_func(){}
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
int main(){nm_test_var='a';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 \| $ac_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$ac_nlist"; then
|
|
|
|
# Try sorting and uniquifying the output.
|
|
if sort "$ac_nlist" | uniq > "$ac_nlist"T; then
|
|
mv -f "$ac_nlist"T "$ac_nlist"
|
|
ac_wcout=`wc "$ac_nlist" 2>/dev/null`
|
|
changequote(,)dnl
|
|
ac_count=`echo "X$ac_wcout" | sed -e 's,^X,,' -e 's/^[ ]*\([0-9][0-9]*\).*$/\1/'`
|
|
changequote([,])dnl
|
|
(test "$ac_count" -ge 0) 2>/dev/null || ac_count=-1
|
|
else
|
|
rm -f "$ac_nlist"T
|
|
ac_count=-1
|
|
fi
|
|
|
|
# Make sure that we snagged all the symbols we need.
|
|
if egrep ' _?nm_test_var$' "$ac_nlist" >/dev/null; then
|
|
if egrep ' _?nm_test_func$' "$ac_nlist" >/dev/null; then
|
|
cat <<EOF > conftest.c
|
|
#ifdef __cplusplus
|
|
extern "C" {
|
|
#endif
|
|
|
|
EOF
|
|
# Now generate the symbol file.
|
|
sed 's/^.* _\?\(.*\)$/extern char \1;/' < "$ac_nlist" >> conftest.c
|
|
|
|
cat <<EOF >> conftest.c
|
|
#if defined (__STDC__) && __STDC__
|
|
# define __ptr_t void *
|
|
#else
|
|
# define __ptr_t char *
|
|
#endif
|
|
|
|
/* The number of symbols in dld_preloaded_symbols, -1 if unsorted. */
|
|
int dld_preloaded_symbol_count = $ac_count;
|
|
|
|
/* The mapping between symbol names and symbols. */
|
|
struct {
|
|
char *name;
|
|
__ptr_t address;
|
|
}
|
|
changequote(,)dnl
|
|
dld_preloaded_symbols[] =
|
|
changequote([,])dnl
|
|
{
|
|
EOF
|
|
sed 's/^_\?\(.*\) _\?\(.*\)$/ {"\1", (__ptr_t) \&\2},/' < "$ac_nlist" >> conftest.c
|
|
cat <<\EOF >> conftest.c
|
|
{0, (__ptr_t) 0}
|
|
};
|
|
|
|
#ifdef __cplusplus
|
|
}
|
|
#endif
|
|
EOF
|
|
# Now try linking the two files.
|
|
mv conftest.$ac_objext conftestm.$ac_objext
|
|
ac_save_LIBS="$LIBS"
|
|
ac_save_CFLAGS="$CFLAGS"
|
|
LIBS="conftestm.$ac_objext"
|
|
CFLAGS="$CFLAGS$no_builtin_flag"
|
|
if AC_TRY_EVAL(ac_link) && test -s conftest; then
|
|
ac_pipe_works=yes
|
|
else
|
|
echo "configure: failed program was:" >&AC_FD_CC
|
|
cat conftest.c >&AC_FD_CC
|
|
fi
|
|
LIBS="$ac_save_LIBS"
|
|
CFLAGS="$ac_save_CFLAGS"
|
|
else
|
|
echo "cannot find nm_test_func in $ac_nlist" >&AC_FD_CC
|
|
fi
|
|
else
|
|
echo "cannot find nm_test_var in $ac_nlist" >&AC_FD_CC
|
|
fi
|
|
else
|
|
echo "cannot run $ac_cv_sys_global_symbol_pipe" >&AC_FD_CC
|
|
fi
|
|
else
|
|
echo "$progname: failed program was:" >&AC_FD_CC
|
|
cat conftest.c >&AC_FD_CC
|
|
fi
|
|
rm -rf conftest*
|
|
|
|
# Do not use the global_symbol_pipe unless it works.
|
|
test "$ac_pipe_works" = yes || ac_cv_sys_global_symbol_pipe=
|
|
])
|
|
|
|
ac_result=yes
|
|
if test -z "$ac_cv_sys_global_symbol_pipe"; then
|
|
ac_result=no
|
|
fi
|
|
AC_MSG_RESULT($ac_result)
|
|
])
|
|
|
|
# GNUPG_SYS_LIBTOOL_CYGWIN32 - find tools needed on cygwin32
|
|
AC_DEFUN(GNUPG_SYS_LIBTOOL_CYGWIN32,
|
|
[AC_CHECK_TOOL(DLLTOOL, dlltool, false)
|
|
AC_CHECK_TOOL(AS, as, false)
|
|
])
|
|
|
|
# GNUPG_SYS_SYMBOL_UNDERSCORE - does the compiler prefix global symbols
|
|
# with an underscore?
|
|
AC_DEFUN(GNUPG_SYS_SYMBOL_UNDERSCORE,
|
|
[tmp_do_check="no"
|
|
case "${target}" in
|
|
i386-emx-os2 | i[3456]86-pc-os2*emx | i386-pc-msdosdjgpp)
|
|
ac_cv_sys_symbol_underscore=yes
|
|
;;
|
|
*)
|
|
if test "$cross_compiling" = yes; then
|
|
ac_cv_sys_symbol_underscore=yes
|
|
else
|
|
tmp_do_check="yes"
|
|
fi
|
|
;;
|
|
esac
|
|
|
|
if test "$tmp_do_check" = "yes"; then
|
|
AC_REQUIRE([GNUPG_PROG_NM])dnl
|
|
AC_REQUIRE([GNUPG_SYS_NM_PARSE])dnl
|
|
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 \| $ac_cv_sys_global_symbol_pipe \> $ac_nlist) && test -s "$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" >&AC_FD_CC
|
|
fi
|
|
fi
|
|
else
|
|
echo "configure: cannot run $ac_cv_sys_global_symbol_pipe" >&AC_FD_CC
|
|
fi
|
|
else
|
|
echo "configure: failed program was:" >&AC_FD_CC
|
|
cat conftest.c >&AC_FD_CC
|
|
fi
|
|
rm -rf conftest*
|
|
])
|
|
else
|
|
AC_MSG_CHECKING([for _ prefix in compiled symbols])
|
|
fi
|
|
AC_MSG_RESULT($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
|
|
])
|
|
|
|
dnl Stolen from gcc
|
|
dnl Define MKDIR_TAKES_ONE_ARG if mkdir accepts only one argument instead
|
|
dnl of the usual 2.
|
|
AC_DEFUN(GNUPG_FUNC_MKDIR_TAKES_ONE_ARG,
|
|
[AC_CHECK_HEADERS(sys/stat.h unistd.h direct.h)
|
|
AC_CACHE_CHECK([if mkdir takes one argument], gnupg_cv_mkdir_takes_one_arg,
|
|
[AC_TRY_COMPILE([
|
|
#include <sys/types.h>
|
|
#ifdef HAVE_SYS_STAT_H
|
|
# include <sys/stat.h>
|
|
#endif
|
|
#ifdef HAVE_UNISTD_H
|
|
# include <unistd.h>
|
|
#endif
|
|
#ifdef HAVE_DIRECT_H
|
|
# include <direct.h>
|
|
#endif], [mkdir ("foo", 0);],
|
|
gnupg_cv_mkdir_takes_one_arg=no, gnupg_cv_mkdir_takes_one_arg=yes)])
|
|
if test $gnupg_cv_mkdir_takes_one_arg = yes ; then
|
|
AC_DEFINE(MKDIR_TAKES_ONE_ARG,1,
|
|
[Defined if mkdir() does not take permission flags])
|
|
fi
|
|
])
|
|
|