AX_WARNING_DEFAULT_ACLOCALDIR [(dirvariable [,[defsetting][,[A][,[N/A]]]])]


AX_ENABLE_DEFAULT_ACLOCALDIR [(dirvariable [,defsetting])]
, 

2006-10-13

Guido U. Draheim <guidod@gmx.de>

GPLWithACException
This program is free software; you can redistribute it and/or modify it under the terms of the GNU General Public License as published by the Free Software Foundation. As a special exception, the respective Autoconf Macro's copyright owner gives unlimited permission to copy, distribute and modify the configure scripts that are the output of Autoconf when processing the Macro. You need not follow the terms of the GNU General Public License when using or distributing such scripts

cryp.to ac-archive's AM Support (released)

print a warning message if the $(datadir)/aclocal directory is not in the dirlist searched by the aclocal tool. This macro is useful if some `make install` would target $(datadir)/aclocal to install an autoconf m4 file of your project to be picked up by other projects.

default $1 dirvariable = aclocaldir
default $2 defsetting  = ${datadir}/aclocal
default $3 action = nothing to do
default $4 action = warn the user about mismatch

In the _WARNING_ variant, the defsetting is not placed in dirvariable nor is it ac_subst'ed in any way. The default fail-action $4 is to send a warning message to the user, and the default accept-action $3 is nothing. It is expected that a Makefile is generated with aclocaldir=${datadir}/aclocal

The _ENABLE_ variant however will set not only the $aclocaldir shell var of the script, but it is also AC-SUBST'ed on default - and furthermore a configure option "--enable-default-aclocaldir" is provided. Only if that option is set then $2 default is not set to the canonic default in the a $prefix subpath but instead $2 default is set to the primary path where `aclocal` looks for macros. The user may also override the default on the command line.

AC_DEFUN([AX_WARNING_DEFAULT_ACLOCALDIR],[dnl
AC_REQUIRE([AX_EXPAND_PREFIX])dnl
AS_VAR_PUSHDEF([DIR],[ax_warning_default_aclocal_dir])dnl
AS_VAR_PUSHDEF([BIN],[ax_warning_default_aclocal_bin])dnl
AS_VAR_PUSHDEF([LOC],[ax_warning_default_aclocal_loc])dnl
LOC='m4_if([$2],,[${datadir}/aclocal],[$2])'
m4_ifval([$1],[test ".$[]$1" != "." && LOC="$[]$1"])
 if test ".$ACLOCAL" = "." ; then
    AC_PATH_PROG([ACLOCAL],[aclocal],[:])
 fi
 BIN="$ACLOCAL"
 test ".$BIN" = "." && BIN="aclocal"
 DIR=`test ".$SHELL" = "." && SHELL="'sh'" ; eval "$BIN --print-ac-dir"`
 test ".$DIR" = "." && test -d "/usr/share/aclocal" && DIR="/usr/share/aclocal"
 test ".$DIR" = "." && DIR="/tmp"
DIR=`eval "echo $DIR"`  # we need to expand
DIR=`eval "echo $DIR"`
LOC=`eval "echo $LOC"`
LOC=`eval "echo $LOC"`
LOC=`eval "echo $LOC"`
LOC=`eval "echo $LOC"`
AC_RUN_LOG([: test "$LOC" = "$DIR"])
if test "$LOC" != "$DIR" ; then
   if test -f "$DIR/dirlist" ; then
      for DIR in `cat $DIR/dirlist` $DIR ; do
          AC_RUN_LOG([: test "$LOC" = "$DIR"])
          test "$LOC" = "$DIR" && break
      done
   fi
   if test "$LOC" != "$DIR" ; then
      m4_ifval([$4],[$4],[dnl
      AC_MSG_NOTICE([warning: m4_if([$1],,[aclocaldir],[$1])=$LOC dnl
(see config.log)])
   AC_MSG_NOTICE([perhaps: make install m4_if([$1],,[aclocaldir],[$1])=$DIR])
   cat m4_ifset([AS_MESSAGE_LOG_FD],[>&AS_MESSAGE_LOG_FD],[>>config.log]) <<EOF
  aclocaldir:   the m4_if([$1],,[default aclocaldir],[$1 value]) of $LOC
  aclocaldir:   is not listed in the dirlist where aclocal will look
  aclocaldir:   for macros - you can override the install-path using
  aclocaldir:   make install aclocaldir=$DIR
  aclocaldir:   or append the directory to aclocal reconfigures later as
  aclocaldir:   aclocal -I $LOC
  aclocaldir:   when an autoconf macro is needed from that directory
EOF
   m4_ifvaln([$5],[$5])])dnl
   m4_ifvaln([$3],[else $3])dnl
   fi
fi
AS_VAR_POPDEF([LOC])dnl
AS_VAR_POPDEF([BIN])dnl
AS_VAR_POPDEF([DIR])dnl
])

AC_DEFUN([AX_ENABLE_DEFAULT_ACLOCALDIR],[dnl
AS_VAR_PUSHDEF([BIN],[ax_warning_default_aclocal_bin])dnl
AS_VAR_PUSHDEF([DIR],[ax_warning_default_aclocal_def])dnl
AS_VAR_PUSHDEF([DEF],[ax_warning_default_aclocal_def])dnl
AC_ARG_ENABLE([enable-default-aclocaldir],
[  --enable-default-aclocaldir(=PATH)   override the datadir/aclocal default])
test ".$enable_default_aclocaldir" = "." && enable_default_aclocaldir="no"
case ".$enable_default_aclocaldir" in
  .no) DIR='m4_if([$2],,[${datadir}/aclocal],[$2])' ;;
  .yes) # autodetect
 if test ".$ACLOCAL" = "." ; then
    AC_PATH_PROG([ACLOCAL],[aclocal],[:])
 fi
 BIN="$ACLOCAL"
 test ".$BIN" = "." && BIN="aclocal"
 DIR=`test ".$SHELL" = "." && SHELL="'sh'" ; eval "$BIN --print-ac-dir"`
 test ".$DIR" = "." && test -d "/usr/share/aclocal" && DIR="/usr/share/aclocal"
 test ".$DIR" = "." && DIR="/tmp" ;;
  *) DIR="$enable_default_aclocaldir" ;;
esac
AX_WARNING_DEFAULT_ACLOCALDIR([$1],[$DEF],[$3],[$4],[$5])
m4_if([$1],,[aclocaldir],[$1])="$ax_warning_default_aclocal_dir"
AC_SUBST(m4_if([$1],,[aclocaldir],[$1]))
AS_VAR_POPDEF([DEF])dnl
AS_VAR_POPDEF([DIR])dnl
AS_VAR_POPDEF([BIN])dnl
])