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e64f2fab92
LIBVIRT_ARG_WITH_ALT is more generic than LIBVIRT_ARG_WITH, which is tailored at switching features on and off. Rename the macros according to their intended purpose, and add some documentation to help developers pick between the two.
155 lines
5.3 KiB
Plaintext
155 lines
5.3 KiB
Plaintext
dnl
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dnl virt-arg.m4: Helper macros for adding configure arguments
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dnl
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dnl Copyright (C) 2012-2014 Red Hat, Inc.
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dnl
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dnl This library is free software; you can redistribute it and/or
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dnl modify it under the terms of the GNU Lesser General Public
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dnl License as published by the Free Software Foundation; either
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dnl version 2.1 of the License, or (at your option) any later version.
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dnl
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dnl This library 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 GNU
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dnl Lesser 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 Lesser General Public
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dnl License along with this library. If not, see
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dnl <http://www.gnu.org/licenses/>.
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dnl
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dnl
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dnl To be used instead of AC_ARG_WITH
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dnl
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dnl See LIBVIRT_ARG_WITH_FEATURE if the argument you're adding is going to
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dnl be used for switching a feature on and off.
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dnl
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dnl LIBVIRT_ARG_WITH([CHECK_NAME], [HELP_DESC], [DEFAULT_ACTION])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables/flags, in uppercase.
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dnl HELP_DESC: Description that will appear in configure --help
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dnl DEFAULT_ACTION: Default configure action
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dnl
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dnl LIBVIRT_ARG_WITH([PACKAGER], [Extra packager name], [no])
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dnl LIBVIRT_ARG_WITH([HTML_DIR], [path to base html directory], [$(datadir)/doc])
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dnl
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AC_DEFUN([LIBVIRT_ARG_WITH], [
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m4_pushdef([check_name], [$1])
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m4_pushdef([help_desc], [[$2]])
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m4_pushdef([default_action], [$3])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([check_name_dash], m4_translit(check_name_lc, [_], [-]))
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m4_pushdef([arg_var], [with-]check_name_dash)
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m4_pushdef([with_var], [with_]check_name_lc)
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m4_divert_text([DEFAULTS], [with_var][[=]][default_action])
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AC_ARG_WITH([check_name_lc],
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[AS_HELP_STRING([[--]arg_var],
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]m4_dquote(help_desc)[[ @<:@default=]]m4_dquote(default_action)[[@:>@])])
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m4_popdef([with_var])
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m4_popdef([arg_var])
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m4_popdef([check_name_dash])
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m4_popdef([check_name_lc])
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m4_popdef([default_action])
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m4_popdef([help_desc])
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m4_popdef([check_name])
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])
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dnl
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dnl To be used instead of AC_ARG_WITH
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dnl
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dnl The difference between LIBVIRT_ARG_WITH and this macro is that the former
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dnl is mostly an enhanced drop-in replacement for AC_ARG_WITH, whereas the
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dnl latter is tailored for adding an argument that is going to be used to
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dnl switch a feature on and off: as a consequence, it optionally supports
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dnl specifying the minimum version for libraries the feature depends on and
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dnl automatically builds a suitable description from the feature name.
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dnl
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dnl LIBVIRT_ARG_WITH_FEATURE([CHECK_NAME], [HELP_NAME], [DEFAULT_ACTION], [MIN_VERSION])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables/flags, in uppercase.
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dnl HELP_NAME: Name that will appear in configure --help
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dnl DEFAULT_ACTION: Default configure action
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dnl MIN_VERSION: Specify minimal version that will be added to
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dnl configure --help (optional)
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dnl
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dnl LIBVIRT_ARG_WITH_FEATURE([SELINUX], [SeLinux], [check])
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dnl LIBVIRT_ARG_WITH_FEATURE([GLUSTERFS], [glusterfs], [check], [3.4.1])
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dnl
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AC_DEFUN([LIBVIRT_ARG_WITH_FEATURE], [
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m4_pushdef([check_name], [$1])
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m4_pushdef([help_name], [[$2]])
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m4_pushdef([default_action], [$3])
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m4_pushdef([min_version], [$4])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([check_name_dash], m4_translit(check_name_lc, [_], [-]))
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m4_pushdef([arg_var], [with-]check_name_dash)
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m4_pushdef([with_var], [with_]check_name_lc)
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m4_pushdef([version_text], m4_ifnblank(min_version, [[ (>= ]]min_version[[)]]))
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m4_divert_text([DEFAULTS], [with_var][[=]][default_action])
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AC_ARG_WITH([check_name_lc],
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[AS_HELP_STRING([[--]arg_var],
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[with ]]m4_dquote(help_name)m4_dquote(version_text)[[ support @<:@default=]]m4_dquote(default_action)[[@:>@])])
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m4_popdef([version_text])
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m4_popdef([with_var])
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m4_popdef([arg_var])
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m4_popdef([check_name_dash])
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m4_popdef([check_name_lc])
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m4_popdef([min_version])
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m4_popdef([default_action])
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m4_popdef([help_name])
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m4_popdef([check_name])
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])
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dnl
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dnl To be used instead of AC_ARG_ENABLE
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dnl
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dnl LIBVIRT_ARG_ENABLE([CHECK_NAME], [HELP_DESC], [DEFAULT_ACTION])
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dnl
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dnl CHECK_NAME: Suffix/prefix used for variables/flags, in uppercase.
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dnl HELP_DESC: Description that will appear in configure --help
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dnl DEFAULT_ACTION: Default configure action
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dnl
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dnl LIBVIRT_ARG_ENABLE([DEBUG], [enable debugging output], [yes])
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dnl
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AC_DEFUN([LIBVIRT_ARG_ENABLE], [
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m4_pushdef([check_name], [$1])
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m4_pushdef([help_desc], [[$2]])
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m4_pushdef([default_action], [$3])
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m4_pushdef([check_name_lc], m4_tolower(check_name))
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m4_pushdef([check_name_dash], m4_translit(check_name_lc, [_], [-]))
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m4_pushdef([arg_var], [enable-]check_name_dash)
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m4_pushdef([enable_var], [enable_]check_name_lc)
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m4_divert_text([DEFAULTS], [enable_var][[=]][default_action])
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AC_ARG_ENABLE([check_name_lc],
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[AS_HELP_STRING([[--]arg_var],
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]m4_dquote(help_desc)[[ @<:@default=]]m4_dquote(default_action)[[@:>@])])
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m4_popdef([enable_var])
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m4_popdef([arg_var])
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m4_popdef([check_name_dash])
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m4_popdef([check_name_lc])
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m4_popdef([default_action])
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m4_popdef([help_desc])
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m4_popdef([check_name])
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])
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