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m4/virt-lib: introduce LIBVIRT_ARG_ENABLE macro

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This macro helps create unified output of "configure --help".

Signed-off-by: Pavel Hrdina <phrdina@redhat.com>
This commit is contained in:
Pavel Hrdina 2016-12-13 13:14:39 +01:00
parent 4519e94b74
commit 7f1e6e9d5a
1 changed files with 38 additions and 0 deletions
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38
m4/virt-lib.m4
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@ -481,3 +481,41 @@ AC_DEFUN([LIBVIRT_ARG_WITH_ALT], [
m4_popdef([help_desc])
m4_popdef([check_name])
])
dnl
dnl To be used instead of AC_ARG_ENABLE
dnl
dnl LIBVIRT_ARG_ENABLE([CHECK_NAME], [HELP_DESC], [DEFAULT_ACTION])
dnl
dnl CHECK_NAME: Suffix/prefix used for variables/flags, in uppercase.
dnl HELP_DESC: Description that will appear in configure --help
dnl DEFAULT_ACTION: Default configure action
dnl
dnl LIBVIRT_ARG_ENABLE([DEBUG], [enable debugging output], [yes])
dnl
AC_DEFUN([LIBVIRT_ARG_ENABLE], [
m4_pushdef([check_name], [$1])
m4_pushdef([help_desc], [[$2]])
m4_pushdef([default_action], [$3])
m4_pushdef([check_name_lc], m4_tolower(check_name))
m4_pushdef([check_name_dash], m4_translit(check_name_lc, [_], [-]))
m4_pushdef([arg_var], [enable-]check_name_dash)
m4_pushdef([enable_var], [enable_]check_name_lc)
m4_divert_text([DEFAULTS], [enable_var][[=]][default_action])
AC_ARG_ENABLE([check_name_dash],
[AS_HELP_STRING([[--]arg_var],
]m4_dquote(help_desc)[[ @<:@default=]]m4_dquote(default_action)[[@:>@])])
m4_popdef([enable_var])
m4_popdef([arg_var])
m4_popdef([check_name_dash])
m4_popdef([check_name_lc])
m4_popdef([default_action])
m4_popdef([help_desc])
m4_popdef([check_name])
])