autoupdate.m4

LINUX下的源码工具,可自己分析,或者直接装在系统上作为应用

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# Interface with autoupdate.
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# Written by David MacKenzie, with help from
# Franc,ois Pinard, Karl Berry, Richard Pixley, Ian Lance Taylor,
# Roland McGrath, Noah Friedman, david d zuhn, and many others.


## --------------------------------- ##
## Defining macros in autoupdate::.  ##
## --------------------------------- ##


# AU_DEFINE(NAME, GLUE-CODE, [MESSAGE])
# -------------------------------------
#
# Declare `autoupdate::NAME' to be `GLUE-CODE', with all the needed
# wrapping actions required by `autoupdate'.
# We do not define anything in `autoconf::'.
m4_define([AU_DEFINE],
[AC_DEFUN([$1], [$2])])


# AU_DEFUN(NAME, NEW-CODE, [MESSAGE])
# -----------------------------------
# Declare that the macro NAME is now obsoleted, and should be replaced
# by NEW-CODE.  Tell the user she should run autoupdate, and include
# the additional MESSAGE.
#
# Also define NAME as a macro which code is NEW-CODE.
#
# This allows to share the same code for both supporting obsoleted macros,
# and to update a configure.ac.
# See `acobsolete.m4' for a longer description.
m4_define([AU_DEFUN],
[AU_DEFINE([$1],
           [AC_DIAGNOSE([obsolete], [The macro `$1' is obsolete.
You should run autoupdate.])dnl
$2],
           [$3])dnl
])


# AU_ALIAS(OLD-NAME, NEW-NAME)
# ----------------------------
# The OLD-NAME is no longer used, just use NEW-NAME instead.  There is
# little difference with using AU_DEFUN but the fact there is little
# interest in running the test suite on both OLD-NAME and NEW-NAME.
# This macro makes it possible to distinguish such cases.
#
# Do not use `defn' since then autoupdate would replace an old macro
# call with the new macro body instead of the new macro call.
m4_define([AU_ALIAS],
[AU_DEFUN([$1], [$2($][@)])])