## ##
MINGW32=no
-DEFAULT_ENABLE_DEBUG_INFO=yes
LT_NO_UNDEFINED=""
AS_CASE([$host_os],
[solaris*|darwin*],
[
- DEFAULT_ENABLE_DEBUG_INFO=no
+ AE_FEATURE_DISABLE([debug-info])
],
[freebsd*],
[
],
[cygwin*],
[
- DEFAULT_ENABLE_DEBUG_INFO=no
+ AE_FEATURE_DISABLE([debug-info])
LT_NO_UNDEFINED="-no-undefined"
],
[mingw*],
[
MINGW32=yes
- DEFAULT_ENABLE_DEBUG_INFO=no
+ AE_FEATURE_DISABLE([debug-info])
LT_NO_UNDEFINED="-no-undefined"
]
)
[AC_DEFINE_UNQUOTED([BABELTRACE_HAVE_POSIX_FALLOCATE], 1, [Has posix_fallocate support.])]
)
+
## ##
## User variables ##
## ##
# Python bindings
# Disabled by default
-AC_ARG_ENABLE([python-bindings],
- [AS_HELP_STRING([--enable-python-bindings],[build the Python bindings])],
- [], dnl AC_ARG_ENABLE will fill enable_python_bindings with the user choice
- [enable_python_bindings=unspecified]
-)
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([python-bindings],[build the Python bindings])
# Python bindings documentation
# Disabled by default
-AC_ARG_ENABLE([python-bindings-doc],
- [AS_HELP_STRING([--enable-python-bindings-doc],[build the Python bindings documentation])],
- [], dnl AC_ARG_ENABLE will fill enable_python_bindings_doc with the user choice
- [enable_python_bindings_doc=no]
-)
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([python-bindings-doc],[build the Python bindings documentation])
# Python plugins
# Disabled by default
-AC_ARG_ENABLE([python-plugins],
- [AS_HELP_STRING([--enable-python-plugins],[enable the Python plugins support for the library and converter])]
- dnl AC_ARG_ENABLE will fill enable_python_plugins with the user choice
-)
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([python-plugins],[enable the Python plugins support for the library and converter])
# Debug info
# Enabled by default, except on some platforms
-AC_ARG_ENABLE([debug-info],
- [AS_HELP_STRING([--disable-debug-info],[disable the debug info support (default on macOS, Solaris and Windows)])],
- [], dnl AC_ARG_ENABLE will fill enable_debug_info with the user choice
- [enable_debug_info="$DEFAULT_ENABLE_DEBUG_INFO"]
-)
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([debug-info],[disable the debug info support (default on macOS, Solaris and Windows)])
# API documentation
# Disabled by default
-AC_ARG_ENABLE([api-doc],
- [AS_HELP_STRING([--enable-api-doc],[build the HTML API documentation])],
- [enable_api_doc=$enableval]
-)
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([api-doc],[build the HTML API documentation])
# Built-in plugins
# Disabled by default
-AC_ARG_ENABLE([built-in-plugins],
- [AS_HELP_STRING([--enable-built-in-plugins],[Statically-link in-tree plug-ins into the babeltrace2 executable])]
- dnl AC_ARG_ENABLE will fill enable_built_in_plugins with the user choice
-)
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([built-in-plugins],[Statically-link in-tree plug-ins into the babeltrace2 executable])
# Built-in python plugin support
# Disabled by default
-AC_ARG_ENABLE([built-in-python-plugin-support],
- [AS_HELP_STRING([--enable-built-in-python-plugin-support],[Statically-link Python plugin support into the babeltrace library])]
- dnl AC_ARG_ENABLE will fill enable_built_in_python_plugin_support with the user choice
-)
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([built-in-python-plugin-support],[Statically-link Python plugin support into the babeltrace library])
# Man pages
# Enabled by default
-AC_ARG_ENABLE([man-pages],
- [AS_HELP_STRING([--disable-man-pages], [Do not build and install man pages (already built in a distributed tarball])],
- [], dnl AC_ARG_ENABLE will fill enable_man_pages with the user choice
- [enable_man_pages=yes]
-)
+AE_FEATURE_DEFAULT_ENABLE
+AE_FEATURE([man-pages],[Do not build and install man pages (already built in a distributed tarball])
+# When given, add -Werror to WARN_CFLAGS.
+# Disabled by default
+AE_FEATURE_DEFAULT_DISABLE
+AE_FEATURE([Werror],[Treat compiler warnings as errors.])
-# Set automake variables for optionnal feature conditionnals in Makefile.am
-AM_CONDITIONAL([ENABLE_PYTHON_BINDINGS], [test "x$enable_python_bindings" = xyes])
-AM_CONDITIONAL([ENABLE_PYTHON_BINDINGS_DOC], [test "x$enable_python_bindings_doc" = xyes])
-AM_CONDITIONAL([ENABLE_PYTHON_PLUGINS], [test "x$enable_python_plugins" = xyes])
-AM_CONDITIONAL([ENABLE_DEBUG_INFO], [test "x$enable_debug_info" = xyes])
-AM_CONDITIONAL([ENABLE_API_DOC], [test "x$enable_api_doc" = xyes])
-AM_CONDITIONAL([ENABLE_BUILT_IN_PLUGINS], [test "x$enable_built_in_plugins" = xyes])
-AM_CONDITIONAL([ENABLE_BUILT_IN_PYTHON_PLUGIN_SUPPORT], [test "x$enable_built_in_python_plugin_support" = xyes])
-AM_CONDITIONAL([ENABLE_MAN_PAGES], [test "x$enable_man_pages" = xyes])
-AM_CONDITIONAL([ENABLE_PYTHON_COMMON_DEPS], [test "x$enable_python_bindings" = xyes || test "x$enable_python_plugins" = xyes])
-# Set defines for optionnal features conditionnals in the source code
+## ##
+## Check for conflicting features selection ##
+## ##
-AS_IF([test "x$enable_built_in_plugins" = xyes],
- [AC_DEFINE([BT_BUILT_IN_PLUGINS], [1], [Define to 1 to register plug-in attributes in static executable sections])]
-)
+# Check for conflicting Python related features user choices.
+AE_IF_FEATURE_ENABLED([python-plugins], [
+ AE_IF_FEATURE_UNDEF([python-bindings], [
+ # --enable-python-plugins was provided but --enable-python-bindings was
+ # omitted. Turn the Python bindings ON anyway because it's needed to
+ # use the Python plugins.
+ AE_FEATURE_ENABLE([python-bindings])
+ ], [
+ AE_IF_FEATURE_DISABLED([python-bindings], [
+ # --enable-python-plugins _and_ --disable-python-bindings were
+ # used. This is invalid because Python plugins need the Python
+ # bindings to be useful.
+ AC_MSG_ERROR(--enable-python-bindings must be used to support Python plugins)
+ ])
+ ])
+])
-AS_IF([test "x$enable_built_in_python_plugin_support" = xyes],
- [AC_DEFINE([BT_BUILT_IN_PYTHON_PLUGIN_SUPPORT], [1], [Define to 1 to register plug-in attributes in static executable sections])]
-)
+# Check for conflicting optional features user choices
+AE_IF_FEATURE_ENABLED([built-in-plugins], [
+ # Built-in plug-ins are only available when the --disable-shared --enable-static options are used.
+ AE_IF_FEATURE_NOT_ENABLED([static], [AC_MSG_ERROR(--enable-static must be used to bundle plug-ins in the babeltrace2 executable)])
+ AE_IF_FEATURE_ENABLED([shared], [AC_MSG_ERROR(--disable-shared must be used to bundle plug-ins in the babeltrace2 executable)])
+])
-AS_IF([test "x$enable_debug_info" = xyes],
- [ENABLE_DEBUG_INFO_VAL=1],
- [ENABLE_DEBUG_INFO_VAL=0]
-)
+AE_IF_FEATURE_ENABLED([built-in-python-plugin-support], [
+ AE_IF_FEATURE_NOT_ENABLED([python-plugins], [AC_MSG_ERROR([--enable-python-plugins must be used to bundle Python plugin support in the babeltrace2 executable])])
+ # Built-in plug-ins are only available when the --disable-shared --enable-static options are used.
+ AE_IF_FEATURE_NOT_ENABLED([static], [AC_MSG_ERROR(--enable-static must be used to bundle Python plugin support in the babeltrace2 executable)])
+ AE_IF_FEATURE_ENABLED([shared], [AC_MSG_ERROR(--disable-shared must be used to bundle Python plugin support in the babeltrace2 executable)])
+])
-AC_SUBST([ENABLE_DEBUG_INFO_VAL])
-# Check for conflicting Python related features user choices.
-AS_IF([test "x$enable_python_plugins" = xyes],
- [
- AS_IF([test "x$enable_python_bindings" = xunspecified],
- [
- # --enable-python-plugins was provided but --enable-python-bindings was
- # omitted. Turn the Python bindings ON anyway because it's needed to
- # use the Python plugins.
- enable_python_bindings=yes
- ],
- [
- AS_IF([test "x$enable_python_bindings" = xno],
- [
- # --enable-python-plugins _and_ --disable-python-bindings were
- # used. This is invalid because Python plugins need the Python
- # bindings to be useful.
- AC_MSG_ERROR(--enable-python-bindings must be used to support Python plugins)
- ]
- )
- ]
- )
- ]
-)
+## ##
+## Set automake variables for optionnal feature conditionnals in Makefile.am ##
+## ##
-# Check for conflicting optional features user choices
+AM_CONDITIONAL([ENABLE_PYTHON_BINDINGS], AE_IS_FEATURE_ENABLED([python-bindings]))
+AM_CONDITIONAL([ENABLE_PYTHON_BINDINGS_DOC], AE_IS_FEATURE_ENABLED([python-bindings-doc]))
+AM_CONDITIONAL([ENABLE_PYTHON_PLUGINS], AE_IS_FEATURE_ENABLED([python-plugins]))
+AM_CONDITIONAL([ENABLE_DEBUG_INFO], AE_IS_FEATURE_ENABLED([debug-info]))
+AM_CONDITIONAL([ENABLE_API_DOC], AE_IS_FEATURE_ENABLED([api-doc]))
+AM_CONDITIONAL([ENABLE_BUILT_IN_PLUGINS], AE_IS_FEATURE_ENABLED([built-in-plugins]))
+AM_CONDITIONAL([ENABLE_BUILT_IN_PYTHON_PLUGIN_SUPPORT], AE_IS_FEATURE_ENABLED([built-in-python-plugin-support]))
+AM_CONDITIONAL([ENABLE_MAN_PAGES], AE_IS_FEATURE_ENABLED([man-pages]))
+AM_CONDITIONAL([ENABLE_PYTHON_COMMON_DEPS], AE_IS_FEATURE_ENABLED([python-bindings]) || AE_IS_FEATURE_ENABLED([python-plugins]))
-AS_IF([test "x$enable_built_in_plugins" = xyes],
- [
- # Built-in plug-ins are only available when the --disable-shared --enable-static options are used.
- AS_IF([test "x$enable_static" != xyes], [AC_MSG_ERROR(--enable-static must be used to bundle plug-ins in the babeltrace2 executable)])
- AS_IF([test "x$enable_shared" = xyes], [AC_MSG_ERROR(--disable-shared must be used to bundle plug-ins in the babeltrace2 executable)])
- ]
+
+## ##
+## Set defines for optionnal features conditionnals in the source code ##
+## ##
+
+AE_IF_FEATURE_ENABLED([built-in-plugins],
+ [AC_DEFINE([BT_BUILT_IN_PLUGINS], [1], [Define to 1 to register plug-in attributes in static executable sections])]
)
-AS_IF([test "x$enable_built_in_python_plugin_support" = xyes],
- [
- AS_IF([test "x$enable_python_plugins" != xyes], [AC_MSG_ERROR([--enable-python-plugins must be used to bundle Python plugin support in the babeltrace2 executable])])
- # Built-in plug-ins are only available when the --disable-shared --enable-static options are used.
- AS_IF([test "x$enable_static" != xyes], [AC_MSG_ERROR(--enable-static must be used to bundle Python plugin support in the babeltrace2 executable)])
- AS_IF([test "x$enable_shared" = xyes], [AC_MSG_ERROR(--disable-shared must be used to bundle Python plugin support in the babeltrace2 executable)])
- ]
+AE_IF_FEATURE_ENABLED([built-in-python-plugin-support],
+ [AC_DEFINE([BT_BUILT_IN_PYTHON_PLUGIN_SUPPORT], [1], [Define to 1 to register plug-in attributes in static executable sections])]
)
+AE_IF_FEATURE_ENABLED([debug-info], [ENABLE_DEBUG_INFO_VAL=1], [ENABLE_DEBUG_INFO_VAL=0])
+AC_SUBST([ENABLE_DEBUG_INFO_VAL])
+
-# Check for optionnal features dependencies
+## ##
+## Check for optionnal features dependencies ##
+## ##
-AS_IF([test "x$enable_python_bindings" = xyes],
+# The Python bindings require SWIG
+AE_IF_FEATURE_ENABLED([python-plugins],
[AX_PKG_SWIG(2.0.0, [], [AC_MSG_ERROR([SWIG 2.0.0 or newer is required to build the python bindings])])]
)
+# Always check for python, we will fail later if some features require it and
+# it's unavailable.
AM_PATH_PYTHON([3.0], [
AM_PATH_PYTHON_MODULES([PYTHON])
AM_CONDITIONAL([HAVE_PYTHON], [test "x$have_python" = xyes])
AM_CONDITIONAL([HAVE_PYTHON_DEV], [test "x$have_python_dev" = xyes])
-AS_IF([test "x$enable_python_bindings" = xyes || test "x$enable_python_plugins" = xyes], [
+AS_IF([AE_IS_FEATURE_ENABLED([python-bindings]) || AE_IS_FEATURE_ENABLED([python-plugins])], [
AS_IF([test "x$have_python_dev" = xno], [
AC_MSG_ERROR([Cannot find a suitable python-config. You can override the python-config path with the PYTHON_CONFIG environment variable.])
])
])
-AS_IF([test "x$enable_python_bindings_doc" = xyes],
+AE_IF_FEATURE_ENABLED([python-bindings-doc],
[
AM_CHECK_PYTHON_SPHINX([PYTHON])
AS_IF([test "x$PYTHON_SPHINX_EXISTS" = xno], [
AC_MSG_ERROR([The Sphinx package for Python 3 is required to build the Python bindings documentation])
])
- AS_IF([test "x$enable_python_bindings" != xyes], [
+ AE_IF_FEATURE_NOT_ENABLED([python-bindings], [
AC_MSG_ERROR([The Python bindings are required to build their documentation])
])
]
)
-AS_IF([test "x$enable_debug_info" = xyes], [
+AE_IF_FEATURE_ENABLED([debug-info], [
# Check if libelf and libdw are present
PKG_CHECK_MODULES([ELFUTILS], [libelf >= 0.154 libdw >= 0.154],
[
])
AC_SUBST([ELFUTILS_LIBS])
-AS_IF([test "x$enable_api_doc" = "xyes"],
+AE_IF_FEATURE_ENABLED([api-doc],
[
DX_DOXYGEN_FEATURE(ON)
DX_DOT_FEATURE(OFF)
AC_PATH_PROG([ASCIIDOC], [asciidoc], [no])
AC_PATH_PROG([XMLTO], [xmlto], [no])
-AS_IF([test "x$enable_man_pages" = "xyes"], [
+AE_IF_FEATURE_ENABLED([man-pages], [
AS_IF([test "x$ASCIIDOC" = "xno" || test "x$XMLTO" = "xno"], [
AS_IF([test "x$in_git_repo" = "xyes"], [
# this is an error because we're in the Git repo, which
AC_SUBST(LIBDIR)
+
+
+
# CFLAGS from libraries (the glib ones are needed for the following sizeof
# test).
AM_CFLAGS="${PTHREAD_CFLAGS} ${GLIB_CFLAGS}"
[WARN_CFLAGS],
[-Werror])
-# When given, add -Werror to WARN_CFLAGS.
-AC_ARG_ENABLE([Werror],
- [AS_HELP_STRING([--enable-Werror], [Treat compiler warnings as errors.])]
-)
-AS_IF([test "x$enable_Werror" = "xyes"],
- [WARN_CFLAGS="${WARN_CFLAGS} -Werror"]
-)
+AE_IF_FEATURE_ENABLED([Werror], [WARN_CFLAGS="${WARN_CFLAGS} -Werror"])
# The test used in AX_APPEND_COMPILE_FLAGS, generated using AC_LANG_PROGRAM, is
# written in such a way that it triggers warnings with the following warning
PPRINT_PROP_STRING([Python include paths], [$PYTHON_INCLUDE])
PPRINT_PROP_STRING([Python linker flags], [$PYTHON_LDFLAGS])
])
-AS_IF([test "x$enable_python_bindings" = "xyes"], [
+AE_IF_FEATURE_ENABLED([python-bindings], [
PPRINT_PROP_STRING([SWIG executable], [$SWIG])
PPRINT_PROP_STRING([SWIG library], [$SWIG_LIB])
])
--- /dev/null
+#
+# SYNOPSIS
+#
+# AE_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
+# ACTION-IF-GIVEN?, ACTION-IF-NOT-GIVEN?,
+# ACTION-IF-ENABLED?, ACTION-IF-NOT-ENABLED?)
+#
+# DESCRIPTION
+#
+# AE_FEATURE is a simple wrapper for AC_ARG_ENABLE.
+#
+# FEATURE-NAME should consist only of alphanumeric characters, dashes,
+# plus signs, and dots.
+#
+# FEATURE-DESCRIPTION will be formatted with AS_HELP_STRING.
+#
+# If the user gave configure the option --enable-FEATURE or --disable-FEATURE,
+# run shell commands ACTION-IF-GIVEN. If neither option was given, run shell
+# commands ACTION-IF-NOT-GIVEN. The name feature indicates an optional
+#
+# If the feature is enabled, run shell commands ACTION-IF-ENABLED, if it is
+# disabled, run shell commands ACTION-IF-NOT-ENABLED.
+#
+# A FEATURE has 3 different states, enabled, disabled and undefined. The first
+# two are self explanatory, the third state means it's disabled by default
+# and it was not explicitly enabled or disabled by the user or by the
+# AE_FEATURE_ENABLE and AE_FEATURE_DISABLE macros.
+#
+# A feature is disabled by default, in order to change this behaviour use the
+# AE_FEATURE_DEFAULT_ENABLE and AE_FEATURE_DEFAULT_DISABLE
+# macros.
+#
+# A simple example:
+#
+# AE_FEATURE_DEFAULT_ENABLE
+# AE_FEATURE(feature_xxxxx, [turns on/off XXXXX support])
+#
+# ...
+#
+# AE_FEATURE_DEFAULT_DISABLE
+# AE_FEATURE(feature_yyyyy, [turns on/off YYYYY support])
+# AM_CONDITIONAL(YYYYY, AE_IS_FEATURE_ENABLED([feature_yyyyy]))
+#
+# AE_FEATURE_DEFAULT_ENABLE
+# AE_FEATURE(...)
+#
+# ...
+#
+# Use AE_FEATURE_ENABLE or AE_FEATURE_DISABLE in order to
+# enable or disable a specific feature.
+#
+# Another simple example:
+#
+# AS_IF([some_test_here],[AE_FEATURE_ENABLE(feature_xxxxx)],[])
+#
+# AE_FEATURE(feature_xxxxx, [turns on/off XXXXX support],
+# HAVE_XXXXX, [Define if you want XXXXX support])
+# AE_FEATURE(feature_yyyyy, [turns on/off YYYYY support],
+# HAVE_YYYYY, [Define if you want YYYYY support])
+#
+# ...
+#
+# NOTE: AE_FEATURE_ENABLE/DISABLE() must be placed first of the relative
+# AE_FEATURE() macro if you want the the proper ACTION-IF-ENABLED and
+# ACTION-IF-NOT-ENABLED to run.
+#
+# LICENSE
+#
+# Copyright (c) 2020 Michael Jeanson <mjeanson@efficios.com>
+# Copyright (c) 2008 Francesco Salvestrini <salvestrini@users.sourceforge.net>
+#
+# This program is free software; you can redistribute it and/or modify it
+# under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2 of the License, or (at your
+# option) any later version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General
+# Public License for more details.
+#
+# You should have received a copy of the GNU General Public License along
+# with this program. If not, see <https://www.gnu.org/licenses/>.
+#
+# As a special exception, the respective Autoconf Macro's copyright owner
+# gives unlimited permission to copy, distribute and modify the configure
+# scripts that are the output of Autoconf when processing the Macro. You
+# need not follow the terms of the GNU General Public License when using
+# or distributing such scripts, even though portions of the text of the
+# Macro appear in them. The GNU General Public License (GPL) does govern
+# all other use of the material that constitutes the Autoconf Macro.
+#
+# This special exception to the GPL applies to versions of the Autoconf
+# Macro released by the Autoconf Archive. When you make and distribute a
+# modified version of the Autoconf Macro, you may extend this special
+# exception to the GPL to apply to your modified version as well.
+
+#serial 1
+
+
+# AE_FEATURE_DEFAULT_ENABLE: The next feature defined with AE_FEATURE will
+# default to enable.
+AC_DEFUN([AE_FEATURE_DEFAULT_ENABLE], [
+ m4_define([ae_feature_default_arg], [yes])
+ m4_define([ae_feature_default_switch], [disable])
+])
+
+
+# AE_FEATURE_DEFAULT_DISABLE: The next feature defined with AE_FEATURE will
+# default to disable.
+#
+AC_DEFUN([AE_FEATURE_DEFAULT_DISABLE], [
+ m4_define([ae_feature_default_arg], [no])
+ m4_define([ae_feature_default_switch], [enable])
+])
+
+
+# AE_FEATURE_ENABLE(FEATURE-NAME): Enable the FEATURE, this will override the
+# user's choice if it was made.
+#
+AC_DEFUN([AE_FEATURE_ENABLE],[ dnl
+ enable_[]patsubst([$1], -, _)[]=yes
+])
+
+
+# AE_FEATURE_DISABLE(FEATURE-NAME): Disable the FEATURE, this will override the
+# user's choice if it was made.
+#
+AC_DEFUN([AE_FEATURE_DISABLE],[ dnl
+ enable_[]patsubst([$1], -, _)[]=no
+])
+
+
+# AE_IF_FEATURE_ENABLED(FEATURE-NAME, ACTION-IF-ENABLED, ACTION-IF-NOT-ENABLED?):
+# Run shell code ACTION-IF-ENABLED if the FEATURE is enabled, otherwise run
+# shell code ACTION-IF-NOT-ENABLED.
+#
+AC_DEFUN([AE_IF_FEATURE_ENABLED],[ dnl
+m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
+
+ AS_IF([test "$enable_[]FEATURE[]" = yes],[ dnl
+ $2
+ ],[: dnl
+ $3
+ ])
+])
+
+
+# AE_IF_FEATURE_NOT_ENABLED(FEATURE-NAME, ACTION-IF-NOT-ENABLED,
+# ACTION-IF-NOT-NOT-ENABLED?):
+# Run shell code ACTION-IF-NOT-ENABLED if the FEATURE is not explicitly
+# enabled, otherwise run shell code ACTION-IF-NOT-NOT-DISABLED.
+#
+# The distinction with AE_IF_FEATURE_DISABLED is that this will also
+# match a feature that is undefined.
+#
+# A feature is undefined when it's disabled by default and was not explicitly
+# enabled or disabled by the user or by AE_FEATURE_ENABLE/DISABLE.
+#
+AC_DEFUN([AE_IF_FEATURE_NOT_ENABLED],[ dnl
+m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
+
+ AS_IF([test "$enable_[]FEATURE[]" != yes],[ dnl
+ $2
+ ],[: dnl
+ $3
+ ])
+])
+
+
+# AE_IF_FEATURE_DISABLED(FEATURE-NAME, ACTION-IF-DISABLED, ACTION-IF-NOT-DISABLED?):
+# Run shell code ACTION-IF-DISABLED if the FEATURE is disabled, otherwise run
+# shell code ACTION-IF-NOT-DISABLED.
+#
+AC_DEFUN([AE_IF_FEATURE_DISABLED],[ dnl
+m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
+
+ AS_IF([test "$enable_[]FEATURE[]" = no],[ dnl
+ $2
+ ],[: dnl
+ $3
+ ])
+])
+
+
+# AE_IF_FEATURE_UNDEF(FEATURE-NAME, ACTION-IF-UNDEF, ACTION-IF-NOT-UNDEF?):
+# Run shell code ACTION-IF-UNDEF if the FEATURE is undefined, otherwise run
+# shell code ACTION-IF-NOT-UNDEF.
+#
+# A feature is undefined when it's disabled by default and was not explicitly
+# enabled or disabled by the user or by AE_FEATURE_ENABLE/DISABLE.
+#
+AC_DEFUN([AE_IF_FEATURE_UNDEF],[ dnl
+m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
+
+ AS_IF([test "x$enable_[]FEATURE[]" = x],[ dnl
+ $2
+ ],[: dnl
+ $3
+ ])
+])
+
+
+# AE_IS_FEATURE_ENABLED(FEATURE-NAME): outputs a shell condition (suitable
+# for use in a shell if statement) that will return true if the FEATURE is
+# enabled.
+#
+AC_DEFUN([AE_IS_FEATURE_ENABLED],[dnl
+m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
+ test "x$enable_[]FEATURE[]" = xyes dnl
+])
+
+
+dnl Disabled by default, unless already overriden
+m4_ifndef([ae_feature_default_arg],[AE_FEATURE_DEFAULT_DISABLE])
+
+
+# AE_FEATURE(FEATURE-NAME, FEATURE-DESCRIPTION,
+# ACTION-IF-GIVEN?, ACTION-IF-NOT-GIVEN?,
+# ACTION-IF-ENABLED?, ACTION-IF-NOT-ENABLED?):
+#
+#
+AC_DEFUN([AE_FEATURE],[ dnl
+m4_pushdef([FEATURE], patsubst([$1], -, _))dnl
+
+dnl If the option wasn't specified and the default is enabled, set enable_FEATURE to yes
+AS_IF([test "x$enable_[]FEATURE[]" = x && test "ae_feature_default_arg" = yes],[ dnl
+ enable_[]FEATURE[]="ae_feature_default_arg"
+])
+
+AC_ARG_ENABLE([$1],
+ AS_HELP_STRING([--ae_feature_default_switch-$1],dnl
+ [$2 [default=ae_feature_default_arg]]),[
+case "${enableval}" in
+ yes)
+ enable_[]FEATURE[]=yes
+ ;;
+ no)
+ enable_[]FEATURE[]=no
+ ;;
+ *)
+ AC_MSG_ERROR([bad value ${enableval} for feature --$1])
+ ;;
+esac
+
+$3
+],[: dnl
+$4
+])
+
+AS_IF([test "$enable_[]FEATURE[]" = yes],[: dnl
+ $5
+],[: dnl
+ $6
+])
+
+m4_popdef([FEATURE])dnl
+])
projects / babeltrace.git / commitdiff
