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rCore/riscv-pk/aclocal.m4
2018-07-04 16:22:20 +08:00

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#=========================================================================
# Local Autoconf Macros
#=========================================================================
# This file contains the macros for the Modular C++ Build System and
# additional autoconf macros which developers can use in their
# configure.ac scripts. Please read the documentation in
# 'mcppbs-doc.txt' for more details on how the Modular C++ Build System
# works. The documenation for each macro should include information
# about the author, date, and copyright.
#-------------------------------------------------------------------------
# MCPPBS_PROG_INSTALL
#-------------------------------------------------------------------------
# This macro will add an --enable-stow command line option to the
# configure script. When enabled, this macro will first check to see if
# the stow program is available and if so it will set the $stow shell
# variable to the binary name and the $enable_stow shell variable to
# "yes". These variables can be used in a makefile to conditionally use
# stow for installation.
#
# This macro uses two environment variables to help setup default stow
# locations. The $STOW_PREFIX is used for stowing native built packages.
# The packages are staged in $STOW_PREFIX/pkgs and then symlinks are
# created from within $STOW_PREFIX into the pkgs subdirectory. If you
# only do native builds then this is all you need to set. If you don't
# set $STOW_PREFIX then the default is just the normal default prefix
# which is almost always /usr/local.
#
# For non-native builds we probably want to install the packages in a
# different location which includes the host architecture name as part
# of the prefix. For these kind of builds, we can specify the $STOW_ROOT
# environment variable and the effective prefix will be
# $STOW_ROOT/${host_alias} where ${host_alias} is specified on the
# configure command line with "--host".
#
# Here is an example setup:
#
# STOW_ROOT="$HOME/install"
# STOW_ARCH="i386-macosx10.4"
# STOW_PREFIX="${STOW_ROOT}/${STOW_ARCH}"
#
AC_DEFUN([MCPPBS_PROG_INSTALL],
[
# Configure command line option
AC_ARG_ENABLE(stow,
AS_HELP_STRING(--enable-stow,[Enable stow-based install]),
[enable_stow="yes"],[enable_stow="no"])
AC_SUBST([enable_stow])
# Environment variables
AC_ARG_VAR([STOW_ROOT], [Root for non-native stow-based installs])
AC_ARG_VAR([STOW_PREFIX], [Prefix for stow-based installs])
# Check for install script
AC_PROG_INSTALL
# Deterimine if native build and set prefix appropriately
AS_IF([ test ${enable_stow} = "yes" ],
[
AC_CHECK_PROGS([stow],[stow],[no])
AS_IF([ test ${stow} = "no" ],
[
AC_MSG_ERROR([Cannot use --enable-stow since stow is not available])
])
# Check if native or non-native build
AS_IF([ test "${build}" = "${host}" ],
[
# build == host so this is a native build. Make sure --prefix not
# set and $STOW_PREFIX is set, then set prefix=$STOW_PREFIX.
AS_IF([ test "${prefix}" = "NONE" && test -n "${STOW_PREFIX}" ],
[
prefix="${STOW_PREFIX}"
AC_MSG_NOTICE([Using \$STOW_PREFIX from environment])
AC_MSG_NOTICE([prefix=${prefix}])
])
],[
# build != host so this is a non-native build. Make sure --prefix
# not set and $STOW_ROOT is set, then set
# prefix=$STOW_ROOT/${host_alias}.
AS_IF([ test "${prefix}" = "NONE" && test -n "${STOW_ROOT}" ],
[
prefix="${STOW_ROOT}/${host_alias}"
AC_MSG_NOTICE([Using \$STOW_ROOT from environment])
AC_MSG_NOTICE([prefix=${prefix}])
])
])
])
])
#-------------------------------------------------------------------------
# MCPPBS_SUBPROJECTS([ sproj1, sproj2, ... ])
#-------------------------------------------------------------------------
# The developer should call this macro with a list of the subprojects
# which make up this project. One should order the list such that any
# given subproject only depends on subprojects listed before it. The
# subproject names can also include an * suffix which indicates that
# this is an optional subproject. Optional subprojects are only included
# as part of the project build if enabled on the configure command line
# with a --enable-<subproject> flag. The user can also specify that all
# optional subprojects should be included in the build with the
# --enable-optional-subprojects flag.
#
# Subproject names can also include a ** suffix which indicates that it
# is an optional subproject, but there is a group with the same name.
# Thus the --enable-<sproj> command line option will enable not just the
# subproject sproj but all of the subprojects which are in the group.
# There is no error checking to make sure that if you use the ** suffix
# you actually define a group so be careful.
#
# Both required and optional subprojects should have a 'subproject.ac'
# file. The script's filename should be the abbreivated subproject name
# (assuming the subproject name is sproj then we would use 'sproj.ac')
# The MCPPBS_SUBPROJECTS macro includes the 'subproject.ac' files for
# enabled subprojects. Whitespace and newlines are allowed within the
# list.
#
# Author : Christopher Batten
# Date : September 10, 2008
AC_DEFUN([MCPPBS_SUBPROJECTS],
[
# Add command line argument to enable all optional subprojects
AC_ARG_ENABLE(optional-subprojects,
AS_HELP_STRING([--enable-optional-subprojects],
[Enable all optional subprojects]))
# Loop through the subprojects given in the macro argument
m4_foreach([MCPPBS_SPROJ],[$1],
[
# Determine if this is a required or an optional subproject
m4_define([MCPPBS_IS_REQ],
m4_bmatch(MCPPBS_SPROJ,[\*+],[false],[true]))
# Determine if there is a group with the same name
m4_define([MCPPBS_IS_GROUP],
m4_bmatch(MCPPBS_SPROJ,[\*\*],[true],[false]))
# Create variations of the subproject name suitable for use as a CPP
# enabled define, a shell enabled variable, and a shell function
m4_define([MCPPBS_SPROJ_NORM],
m4_normalize(m4_bpatsubsts(MCPPBS_SPROJ,[*],[])))
m4_define([MCPPBS_SPROJ_DEFINE],
m4_toupper(m4_bpatsubst(MCPPBS_SPROJ_NORM[]_ENABLED,[-],[_])))
m4_define([MCPPBS_SPROJ_FUNC],
m4_bpatsubst(_mpbp_[]MCPPBS_SPROJ_NORM[]_configure,[-],[_]))
m4_define([MCPPBS_SPROJ_UNDERSCORES],
m4_bpatsubsts(MCPPBS_SPROJ,[-],[_]))
m4_define([MCPPBS_SPROJ_SHVAR],
m4_bpatsubst(enable_[]MCPPBS_SPROJ_NORM[]_sproj,[-],[_]))
# Add subproject to our running list
subprojects="$subprojects MCPPBS_SPROJ_NORM"
# Process the subproject appropriately. If enabled add it to the
# $enabled_subprojects running shell variable, set a
# SUBPROJECT_ENABLED C define, and include the appropriate
# 'subproject.ac'.
m4_if(MCPPBS_IS_REQ,[true],
[
AC_MSG_NOTICE([configuring default subproject : MCPPBS_SPROJ_NORM])
AC_CONFIG_FILES(MCPPBS_SPROJ_NORM[].mk:MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].mk.in)
MCPPBS_SPROJ_SHVAR="yes"
subprojects_enabled="$subprojects_enabled MCPPBS_SPROJ_NORM"
AC_DEFINE(MCPPBS_SPROJ_DEFINE,,
[Define if subproject MCPPBS_SPROJ_NORM is enabled])
m4_include(MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].ac)
],[
# For optional subprojects we capture the 'subproject.ac' as a
# shell function so that in the MCPPBS_GROUP macro we can just
# call this shell function instead of reading in 'subproject.ac'
# again.
MCPPBS_SPROJ_FUNC ()
{
AC_MSG_NOTICE([configuring optional subproject : MCPPBS_SPROJ_NORM])
AC_CONFIG_FILES(MCPPBS_SPROJ_NORM[].mk:MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].mk.in)
MCPPBS_SPROJ_SHVAR="yes"
subprojects_enabled="$subprojects_enabled MCPPBS_SPROJ_NORM"
AC_DEFINE(MCPPBS_SPROJ_DEFINE,,
[Define if subproject MCPPBS_SPROJ_NORM is enabled])
m4_include(MCPPBS_SPROJ_NORM[]/MCPPBS_SPROJ_NORM[].ac)
};
# Optional subprojects add --enable-subproject command line
# options, _if_ the subproject name is not also a group name.
m4_if(MCPPBS_IS_GROUP,[false],
[
AC_ARG_ENABLE(MCPPBS_SPROJ_NORM,
AS_HELP_STRING(--enable-MCPPBS_SPROJ_NORM,
[Subproject MCPPBS_SPROJ_NORM]),
[MCPPBS_SPROJ_SHVAR="yes"],[MCPPBS_SPROJ_SHVAR="no"])
AS_IF([test "$MCPPBS_SPROJ_SHVAR" = "yes"],
[
eval "MCPPBS_SPROJ_FUNC"
],[
AC_MSG_NOTICE([processing optional subproject : MCPPBS_SPROJ_NORM])
])
],[
# If the subproject name is also a group name then we need to
# make sure that we set the shell variable for that subproject to
# no so that the group code knows we haven't run it yet.
AC_MSG_NOTICE([processing optional subproject : MCPPBS_SPROJ_NORM])
MCPPBS_SPROJ_SHVAR="no"
])
# Always execute the subproject configure code if we are enabling
# all subprojects.
AS_IF([ test "$enable_optional_subprojects" = "yes" \
&& test "$MCPPBS_SPROJ_SHVAR" = "no" ],
[
eval "MCPPBS_SPROJ_FUNC"
])
])
])
# Output make variables
AC_SUBST([subprojects])
AC_SUBST([subprojects_enabled])
])
#-------------------------------------------------------------------------
# MCPPBS_GROUP( [group-name], [ sproj1, sproj2, ... ] )
#-------------------------------------------------------------------------
# This macro creates a subproject group with the given group-name. When
# a user specifies --enable-<group-name> the listed subprojects will be
# enabled. Groups can have the same name as a subproject and in that
# case whenever a user specifies --enable-<subproject> the subprojects
# listed in the corresponding group will also be enabled. Groups are
# useful for specifying related subprojects which are usually enabled
# together, as well as for specifying that a specific optional
# subproject has dependencies on other optional subprojects.
#
# Author : Christopher Batten
# Date : September 10, 2008
AC_DEFUN([MCPPBS_GROUP],
[
m4_define([MCPPBS_GROUP_NORM],
m4_normalize([$1]))
m4_define([MCPPBS_GROUP_SHVAR],
m4_bpatsubst(enable_[]MCPPBS_GROUP_NORM[]_group,[-],[_]))
AC_ARG_ENABLE(MCPPBS_GROUP_NORM,
AS_HELP_STRING(--enable-MCPPBS_GROUP_NORM,
[Group MCPPBS_GROUP_NORM: $2]),
[MCPPBS_GROUP_SHVAR="yes"],[MCPPBS_GROUP_SHVAR="no"])
AS_IF([test "$MCPPBS_GROUP_SHVAR" = "yes" ],
[
AC_MSG_NOTICE([configuring optional group : MCPPBS_GROUP_NORM])
])
m4_foreach([MCPPBS_SPROJ],[$2],
[
m4_define([MCPPBS_SPROJ_NORM],
m4_normalize(MCPPBS_SPROJ))
m4_define([MCPPBS_SPROJ_SHVAR],
m4_bpatsubst(enable_[]MCPPBS_SPROJ_NORM[]_sproj,[-],[_]))
m4_define([MCPPBS_SPROJ_FUNC],
m4_bpatsubst(_mpbp_[]MCPPBS_SPROJ_NORM[]_configure,[-],[_]))
AS_IF([ test "$MCPPBS_GROUP_SHVAR" = "yes" \
&& test "$MCPPBS_SPROJ_SHVAR" = "no" ],
[
eval "MCPPBS_SPROJ_FUNC"
])
])
])
#-------------------------------------------------------------------------
# AX_DEFAULT_CONFIGURE_ARG
#-------------------------------------------------------------------------
# Simple little macro which adds a configure commane line option to an
# internal autoconf shell variable. Not sure how safe this is, but it
# seems to work fine.
#
# Author : Christopher Batten
# Date : August 20, 2009
AC_DEFUN([AX_DEFAULT_CONFIGURE_ARG],
[
AC_MSG_NOTICE([adding default configure arg: $1])
ac_configure_args="$1 ${ac_configure_args}"
])