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Annotation of Gnu-Mach/Drivers.macros, revision 1.1.1.1

1.1       root        1: dnl
                      2: dnl Some autoconf macros useful for device driver configuration
                      3: dnl
                      4: dnl Copyright 1997 Free Software Foundation, Inc.
                      5: dnl Permission to use, copy, modify and distribute this software and its
                      6: dnl documentation is hereby granted, provided that both the copyright
                      7: dnl notice and this permission notice appear in all copies of the
                      8: dnl software, derivative works or modified versions, and any portions
                      9: dnl thereof, and that both notices appear in supporting documentation.
                     10: dnl 
                     11: dnl THE FREE SOFTWARE FOUNDATION ALLOWS FREE USE OF THIS SOFTWARE IN ITS
                     12: dnl "AS IS" CONDITION.  THE FREE SOFTWARE FOUNDATION DISCLAIMS ANY
                     13: dnl LIABILITY OF ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE
                     14: dnl USE OF THIS SOFTWARE.
                     15: 
                     16: AC_SUBST(device_drivers)
                     17: 
                     18: dnl AC_DRIVER_ALIAS(alias, canonical) makes --enable-alias have the
                     19: dnl same effect as --enable-canonical.
                     20: 
                     21: AC_DEFUN(AC_DRIVER_ALIAS, [
                     22: [#] Checking for alias [$1]
                     23: AC_ARG_ENABLE([$1],,
                     24: enable_[$2]="$enable_[$1]"
                     25: )])
                     26: 
                     27: dnl AC_DRIVER_CLASS(name,option,files) defines a class of drivers.  If
                     28: dnl any driver declared by AC_DRIVER to be in that class is selected
                     29: dnl by the user, then set the specified option with AC_DEFINE and add
                     30: dnl the specified files to the output variable `device_drivers'.  This
                     31: dnl macro must precede the use of any corresponding AC_DRIVER macros.
                     32: 
                     33: AC_DEFUN(AC_DRIVER_CLASS, [
                     34: driver_class_[$1]_option=[$2]
                     35: driver_class_[$1]_files="[$3]"
                     36: ])
                     37: 
                     38: dnl AC_DRIVER(name,option,files [,class]) detects option --enable-name.  If
                     39: dnl it's set, then `option' is defined with AC_DEFINE, and files is
                     40: dnl added to the output variable `device_drivers'.  The driver is of class 
                     41: dnl `class'; see the comments on AC_DRIVER_CLASS for more information.
                     42: 
                     43: AC_DEFUN(AC_DRIVER, [
                     44: [#] Checking for device driver option [$1]
                     45: AC_ARG_ENABLE([$1],,
                     46: AC_DEFINE([$2])
                     47: device_drivers="$device_drivers [$3]"
                     48: if test "driver_class_[$4]_selected+set" != set; then
                     49:   driver_class_[$4]_selected=yes
                     50:   AC_DEFINE_UNQUOTED($driver_class_[$4]_option)
                     51:   device_drivers="$device_drivers $driver_class_[$4]_files"
                     52: fi
                     53: )])
                     54: 
                     55: 

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