And changelog :)
[gnupg.git] / acinclude.m4
index f124fc4..4a2c916 100644 (file)
@@ -1,5 +1,21 @@
-dnl macros to configure g10
-
+dnl macros to configure gnupg
+dnl Copyright (C) 1998, 1999, 2000, 2001 Free Software Foundation, Inc.
+dnl
+dnl This file is part of GnuPG.
+dnl
+dnl GnuPG is free software; you can redistribute it and/or modify
+dnl it under the terms of the GNU General Public License as published by
+dnl the Free Software Foundation; either version 2 of the License, or
+dnl (at your option) any later version.
+dnl 
+dnl GnuPG 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 General Public License for more details.
+dnl 
+dnl You should have received a copy of the GNU General Public License
+dnl along with this program; if not, write to the Free Software
+dnl Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA
 
 dnl GNUPG_MSG_PRINT(STRING)
 dnl print a message
@@ -15,38 +31,80 @@ dnl
 AC_DEFUN(GNUPG_CHECK_TYPEDEF,
   [ AC_MSG_CHECKING(for $1 typedef)
     AC_CACHE_VAL(gnupg_cv_typedef_$1,
-    [AC_TRY_COMPILE([#include <stdlib.h>
+    [AC_TRY_COMPILE([#define _GNU_SOURCE 1
+    #include <stdlib.h>
     #include <sys/types.h>], [
     #undef $1
     int a = sizeof($1);
     ], gnupg_cv_typedef_$1=yes, gnupg_cv_typedef_$1=no )])
     AC_MSG_RESULT($gnupg_cv_typedef_$1)
     if test "$gnupg_cv_typedef_$1" = yes; then
-        AC_DEFINE($2)
+        AC_DEFINE($2,1,[Defined if a `]$1[' is typedef'd])
     fi
   ])
 
 
-
-dnl GNUPG_LINK_FILES( SRC, DEST )
-dnl same as AC_LINK_FILES, but collect the files to link in
-dnl some special variables and do the link
-dnl when GNUPG_DO_LINK_FILES is called
-dnl This is a workaround for AC_LINK_FILES, because it does not work
-dnl correct when using a caching scheme
+dnl GNUPG_CHECK_GNUMAKE
 dnl
-define(GNUPG_LINK_FILES,
-  [ if test "x$wk_link_files_src" = "x"; then
-        wk_link_files_src="$1"
-        wk_link_files_dst="$2"
+AC_DEFUN(GNUPG_CHECK_GNUMAKE,
+  [ 
+    if ${MAKE-make} --version 2>/dev/null | grep '^GNU ' >/dev/null 2>&1; then
+        :
     else
-        wk_link_files_src="$wk_link_files_src $1"
-        wk_link_files_dst="$wk_link_files_dst $2"
+        AC_MSG_WARN([[
+***
+*** It seems that you are not using GNU make.  Some make tools have serious
+*** flaws and you may not be able to build this software at all. Before you
+*** complain, please try GNU make:  GNU make is easy to build and available
+*** at all GNU archives.  It is always available from ftp.gnu.org:/gnu/make.
+***]])
     fi
   ])
-define(GNUPG_DO_LINK_FILES,
-  [ AC_LINK_FILES( $wk_link_files_src, $wk_link_files_dst )
-  ])
+
+
+dnl GNUPG_CHECK_FAQPROG
+dnl
+AC_DEFUN(GNUPG_CHECK_FAQPROG,
+  [ AC_MSG_CHECKING(for faqprog.pl)
+    if faqprog.pl -V 2>/dev/null | grep '^faqprog.pl ' >/dev/null 2>&1; then
+        working_faqprog=yes
+        FAQPROG="faqprog.pl"
+    else 
+       working_faqprog=no
+        FAQPROG=": "
+    fi
+    AC_MSG_RESULT($working_faqprog)
+    AC_SUBST(FAQPROG)
+    AM_CONDITIONAL(WORKING_FAQPROG, test "$working_faqprog" = "yes" )
+
+dnl     if test $working_faqprog = no; then
+dnl         AC_MSG_WARN([[
+dnl ***
+dnl *** It seems that the faqprog.pl program is not installed;
+dnl *** however it is only needed if you want to change the FAQ.
+dnl ***  (faqprog.pl should be available at:
+dnl ***    ftp://ftp.gnupg.org/pub/gcrypt/contrib/faqprog.pl )
+dnl *** No need to worry about this warning.
+dnl ***]])
+dnl     fi
+   ])       
+
+dnl GNUPG_CHECK_DOCBOOK_TO_TEXI
+dnl
+AC_DEFUN(GNUPG_CHECK_DOCBOOK_TO_TEXI,
+  [
+    AC_CHECK_PROG(DOCBOOK_TO_TEXI, docbook2texi, yes, no)
+    AC_MSG_CHECKING(for sgml to texi tools)
+    working_sgmltotexi=no
+    if test "$ac_cv_prog_DOCBOOK_TO_TEXI" = yes; then
+      if sgml2xml -v /dev/null 2>&1 | grep 'SP version' >/dev/null 2>&1 ; then
+            working_sgmltotexi=yes
+      fi
+    fi
+    AC_MSG_RESULT($working_sgmltotexi)
+    AM_CONDITIONAL(HAVE_DOCBOOK_TO_TEXI, test "$working_sgmltotexi" = "yes" )
+   ])       
+
 
 
 dnl GNUPG_CHECK_ENDIAN
@@ -89,9 +147,11 @@ define(GNUPG_CHECK_ENDIAN,
       ])
     AC_MSG_RESULT([$gnupg_cv_c_endian])
     if test "$gnupg_cv_c_endian" = little; then
-      AC_DEFINE(LITTLE_ENDIAN_HOST)
+      AC_DEFINE(LITTLE_ENDIAN_HOST,1,
+                [Defined if the host has little endian byte ordering])
     else
-      AC_DEFINE(BIG_ENDIAN_HOST)
+      AC_DEFINE(BIG_ENDIAN_HOST,1,
+                [Defined if the host has big endian byte ordering])
     fi
   ])
 
@@ -188,34 +248,38 @@ define(GNUPG_CHECK_PIC,
 
 
 ######################################################################
-# Check for rdynamic flag
-# This sets CFLAGS_RDYNAMIC to the required flags
+# Check for export-dynamic flag
+# This sets CFLAGS_EXPORTDYNAMIC to the required flags
 ######################################################################
-dnl GNUPG_CHECK_RDYNAMIC
+dnl GNUPG_CHECK_EXPORTDYNAMIC
 dnl
-define(GNUPG_CHECK_RDYNAMIC,
-  [ AC_MSG_CHECKING(how to specify -rdynamic)
-    CFLAGS_RDYNAMIC=
+define(GNUPG_CHECK_EXPORTDYNAMIC,
+  [ AC_MSG_CHECKING(how to specify -export-dynamic)
     if test "$cross_compiling" = yes; then
-        AC_MSG_RESULT(assume none)
+      AC_MSG_RESULT(assume none)
+      CFLAGS_EXPORTDYNAMIC=""
     else
-        case "$host_os" in
-          solaris* )
-            CFLAGS_RDYNAMIC="-Wl,-dy"
-            ;;
-
-          openbsd* | freebsd2* | osf4* )
-            CFLAGS_RDYNAMIC=""
-            ;;
-          * )
-            CFLAGS_RDYNAMIC="-Wl,-export-dynamic"
-            ;;
-        esac
-        AC_MSG_RESULT($CFLAGS_RDYNAMIC)
+      AC_CACHE_VAL(gnupg_cv_export_dynamic,[
+      if AC_TRY_COMMAND([${CC-cc} $CFLAGS -Wl,--version 2>&1 |
+                                          grep "GNU ld" >/dev/null]); then
+          # using gnu's linker
+          gnupg_cv_export_dynamic="-Wl,-export-dynamic"
+      else
+          case "$host_os" in
+            hpux* )
+              gnupg_cv_export_dynamic="-Wl,-E"
+              ;;
+            * )
+              gnupg_cv_export_dynamic=""
+              ;;
+          esac
+      fi
+      ])
+      AC_MSG_RESULT($gnupg_cv_export_dynamic)
+      CFLAGS_EXPORTDYNAMIC="$gnupg_cv_export_dynamic"
     fi
   ])
 
-
 #####################################################################
 # Check for SysV IPC  (from GIMP)
 #   And see whether we have a SHM_LOCK (FreeBSD does not have it).
@@ -255,7 +319,8 @@ define(GNUPG_CHECK_IPC,
          gnupg_cv_ipc_rmid_deferred_release="assume-no")
        )
        if test "$gnupg_cv_ipc_rmid_deferred_release" = "yes"; then
-           AC_DEFINE(IPC_RMID_DEFERRED_RELEASE)
+           AC_DEFINE(IPC_RMID_DEFERRED_RELEASE,1,
+                     [Defined if we can do a deferred shm release])
            AC_MSG_RESULT(yes)
        else
           if test "$gnupg_cv_ipc_rmid_deferred_release" = "no"; then
@@ -270,14 +335,16 @@ define(GNUPG_CHECK_IPC,
           AC_TRY_COMPILE([#include <sys/types.h>
              #include <sys/ipc.h>
              #include <sys/shm.h>],[
-             int foo( int shm_id ) {  shmctl(shm_id, SHM_LOCK, 0); }
+             int shm_id;
+             shmctl(shm_id, SHM_LOCK, 0);
              ],
              gnupg_cv_ipc_have_shm_lock="yes",
              gnupg_cv_ipc_have_shm_lock="no"
           )
        )
        if test "$gnupg_cv_ipc_have_shm_lock" = "yes"; then
-         AC_DEFINE(IPC_HAVE_SHM_LOCK)
+         AC_DEFINE(IPC_HAVE_SHM_LOCK,1,
+                   [Defined if a SysV shared memory supports the LOCK flag])
          AC_MSG_RESULT(yes)
        else
          AC_MSG_RESULT(no)
@@ -289,11 +356,47 @@ define(GNUPG_CHECK_IPC,
 ######################################################################
 # Check whether mlock is broken (hpux 10.20 raises a SIGBUS if mlock
 # is not called from uid 0 (not tested whether uid 0 works)
+# For DECs Tru64 we have also to check whether mlock is in librt
+# mlock is there a macro using memlk()
 ######################################################################
 dnl GNUPG_CHECK_MLOCK
 dnl
 define(GNUPG_CHECK_MLOCK,
   [ AC_CHECK_FUNCS(mlock)
+    if test "$ac_cv_func_mlock" = "no"; then
+        AC_CHECK_HEADERS(sys/mman.h)
+        if test "$ac_cv_header_sys_mman_h" = "yes"; then
+            # Add librt to LIBS:
+            AC_CHECK_LIB(rt, memlk)
+            AC_CACHE_CHECK([whether mlock is in sys/mman.h],
+                            gnupg_cv_mlock_is_in_sys_mman,
+                [AC_TRY_LINK([
+                    #include <assert.h>
+                    #ifdef HAVE_SYS_MMAN_H
+                    #include <sys/mman.h>
+                    #endif
+                ], [
+                    int i;
+
+                    /* glibc defines this for functions which it implements
+                     * to always fail with ENOSYS.  Some functions are actually
+                     * named something starting with __ and the normal name
+                     * is an alias.  */
+                    #if defined (__stub_mlock) || defined (__stub___mlock)
+                    choke me
+                    #else
+                    mlock(&i, 4);
+                    #endif
+                    ; return 0;
+                ],
+                gnupg_cv_mlock_is_in_sys_mman=yes,
+                gnupg_cv_mlock_is_in_sys_mman=no)])
+            if test "$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 "$ac_cv_func_mlock" = "yes"; then
         AC_MSG_CHECKING(whether mlock is broken)
           AC_CACHE_VAL(gnupg_cv_have_broken_mlock,
@@ -330,8 +433,10 @@ define(GNUPG_CHECK_MLOCK,
            )
          )
          if test "$gnupg_cv_have_broken_mlock" = "yes"; then
-             AC_DEFINE(HAVE_BROKEN_MLOCK)
+             AC_DEFINE(HAVE_BROKEN_MLOCK,1,
+                       [Defined if the mlock() call does not work])
              AC_MSG_RESULT(yes)
+             AC_CHECK_FUNCS(plock)
          else
             if test "$gnupg_cv_have_broken_mlock" = "no"; then
                 AC_MSG_RESULT(no)
@@ -344,7 +449,6 @@ define(GNUPG_CHECK_MLOCK,
 
 
 ################################################################
-
 # GNUPG_PROG_NM - find the path to a BSD-compatible name lister
 AC_DEFUN(GNUPG_PROG_NM,
 [AC_MSG_CHECKING([for BSD-compatible nm])
@@ -404,7 +508,7 @@ case "$host_os" in
 aix*)
   ac_symcode='[BCDTU]'
   ;;
-freebsd* | netbsd* | openbsd* | sunos* | cygwin32* | mingw32*)
+freebsd* | netbsd* | openbsd* | bsdi* | sunos* | cygwin32* | mingw32*)
   ac_sympat='_\([_A-Za-z][_A-Za-z0-9]*\)'
   ac_symxfrm='_\1 \1'
   ;;
@@ -555,11 +659,21 @@ 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,
-[if test "$cross_compiling" = yes; then
-    AC_MSG_CHECKING([for _ prefix in compiled symbols])
-    ac_cv_sys_symbol_underscore=yes
-    AC_MSG_RESULT(assume yes)
-else
+[tmp_do_check="no"
+case "${target}" in
+    i386-emx-os2 | i[3456]86-pc-os2*emx | i386-pc-msdosdjgpp | *-*-cygwin)
+        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])
@@ -592,13 +706,37 @@ else
 fi
 rm -rf conftest*
 ])
-AC_MSG_RESULT($ac_cv_sys_symbol_underscore)
+else
+AC_MSG_CHECKING([for _ prefix in compiled symbols])
 fi
+AC_MSG_RESULT($ac_cv_sys_symbol_underscore)
 if test x$ac_cv_sys_symbol_underscore = xyes; then
   AC_DEFINE(WITH_SYMBOL_UNDERSCORE,1,
-  [define if compiled symbols have a leading underscore])
+            [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
+])
 
-dnl *-*wedit:notab*-*  Please keep this as the last line.