AX_CONFIG_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION, DEFINE, DEFINE-DESCRIPTION, [ACTION-IF-ENABLED [, ACTION-IF-NOT-ENABLED]])
AX_CONFIG_FEATURE is a simple wrapper for AC_ARG_ENABLE, it enables the feature FEATURE-NAME and AC_DEFINEs the passed DEFINE, depending on the user choice. DESCRIPTION will be used for AC_DEFINEs. ACTION-IF-ENABLED and ACTION-IF-NOT-ENABLED are the actions that will be run. A feature is enabled by default, in order to change this behaviour use the AX_CONFIG_FEATURE_DEFAULT_ENABLED and AX_CONFIG_FEATURE_DEFAULT_DISABLED macros.
A simple example:
AX_CONFIG_FEATURE_DEFAULT_ENABLED
AX_CONFIG_FEATURE(feature_xxxxx, [turns on/off XXXXX support],
HAVE_XXXXX, [Define if you want XXXXX support])
...
AX_CONFIG_FEATURE_DEFAULT_DISABLED
AX_CONFIG_FEATURE(feature_yyyyy, [turns on/off YYYYY support],
HAVE_YYYYY, [Define if you want YYYYY support],
[enable_yyyyy="yes"], [enable_yyyyy="no"])
AM_CONDITIONAL(YYYYY, [test "$enable_yyyyy" = "yes"])
AX_CONFIG_FEATURE_DEFAULT_ENABLED AX_CONFIG_FEATURE(...)
...
If you have lot of features and you want a verbose dumping of each user selection use AX_CONFIG_FEATURE_VERBOSE. Use AX_CONFIG_FEATURE_SILENT in order to remove a previously AX_CONFIG_FEATURE_VERBOSE. By default features are silent.
Use AX_CONFIG_FEATURE_ENABLE or AX_CONFIG_FEATURE_DISABLE in order to enable or disable a specific feature.
Another simple example:
AS_IF([some_test_here],[AX_CONFIG_FEATURE_ENABLE(feature_xxxxx)],[])
AX_CONFIG_FEATURE(feature_xxxxx, [turns on/off XXXXX support],
HAVE_XXXXX, [Define if you want XXXXX support])
AX_CONFIG_FEATURE(feature_yyyyy, [turns on/off YYYYY support],
HAVE_YYYYY, [Define if you want YYYYY support],
[enable_yyyyy="yes"], [enable_yyyyy="no"])
...
NOTE: AX_CONFIG_FEATURE_ENABLE() must be placed first of the relative AX_CONFIG_FEATURE() macro ...
Download the latest version of ax_config_feature.m4 or browse the macro’s revision history.
Copyright © 2008 Francesco Salvestrini salvestrini@users.sourceforge.net
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