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Diffstat (limited to 'ltp_framework/include/mk/env_pre.mk')
| -rw-r--r-- | ltp_framework/include/mk/env_pre.mk | 144 |
1 files changed, 144 insertions, 0 deletions
diff --git a/ltp_framework/include/mk/env_pre.mk b/ltp_framework/include/mk/env_pre.mk new file mode 100644 index 0000000..f1584a8 --- /dev/null +++ b/ltp_framework/include/mk/env_pre.mk @@ -0,0 +1,144 @@ +# +# Make pre-include environment Makefile. +# +# Copyright (C) 2009, Cisco Systems Inc. +# +# 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, write to the Free Software Foundation, Inc., +# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA. +# +# Garrett Cooper, September 2009 +# +# This Makefile must be included first. NO IF'S, AND'S, OR BUT'S. +# +# This sets the stage for all operations required within Makefiles. +# + +ifndef ENV_PRE_LOADED +ENV_PRE_LOADED = 1 + +# "out-of-build-tree" build. +BUILD_TREE_BUILDDIR_INSTALL := 1 +# "in-srcdir" build / install. +BUILD_TREE_SRCDIR_INSTALL := 2 +# "in-srcdir" build, non-srcdir install. +BUILD_TREE_NONSRCDIR_INSTALL := 3 +# configure not run. +BUILD_TREE_UNCONFIGURED := 4 + +ifndef MAKE_VERSION_CHECK +export MAKE_VERSION_CHECK = 1 +ifneq ($(firstword $(sort 3.80 $(MAKE_VERSION))),3.80) +$(error Your version of make $(MAKE_VERSION) is too old. Upgrade to at least 3.80; 3.81+ is preferred) +else +ifneq ($(filter 3.80%,$(MAKE_VERSION)),) +export MAKE_3_80_COMPAT := 1 +endif # make 3.80? +endif # At least make 3.80? +endif # MAKE_VERSION_CHECK + +# Get the absolute path for the source directory. +top_srcdir ?= $(error You must define top_srcdir before including this file) + +include $(top_srcdir)/include/mk/functions.mk + +# Where's the root source directory? +ifdef MAKE_3_80_COMPAT +abs_top_srcdir := $(call MAKE_3_80_abspath,$(top_srcdir)) +else +abs_top_srcdir := $(abspath $(top_srcdir)) +endif + +# +# Where's the root object directory? +# +# Just in case it's not specified, set it to the top srcdir (because the user +# must not have wanted out of build tree support)... +# +top_builddir ?= $(top_srcdir) + +# We need the absolute path... +ifdef MAKE_3_80_COMPAT +abs_top_builddir := $(call MAKE_3_80_abspath,$(top_builddir)) +else +abs_top_builddir := $(abspath $(top_builddir)) +endif + +# Where's the root object directory? +builddir := . + +abs_builddir := $(CURDIR) + +cwd_rel_from_top := $(subst $(abs_top_builddir),,$(abs_builddir)) + +# Where's the source located at? Squish all of the / away by using abspath... +ifdef MAKE_3_80_COMPAT +abs_srcdir := $(call MAKE_3_80_abspath,$(abs_top_srcdir)/$(cwd_rel_from_top)) +else +abs_srcdir := $(abspath $(abs_top_srcdir)/$(cwd_rel_from_top)) +endif + +srcdir := $(strip $(subst $(abs_top_srcdir)/,,$(abs_srcdir))) + +ifeq ($(srcdir),) +srcdir := . +endif + +# autotools, *clean, and help don't require config.mk, features.mk, etc... +ifeq ($(filter autotools %clean .gitignore gitignore.% help,$(MAKECMDGOALS)),) + +include $(abs_top_builddir)/include/mk/config.mk +include $(abs_top_builddir)/include/mk/features.mk + +# START out-of-build-tree check. +ifneq ($(abs_builddir),$(abs_srcdir)) +BUILD_TREE_STATE := $(BUILD_TREE_BUILDDIR_INSTALL) +else +# Else, not out of build tree.. + +# START srcdir build-tree install checks +ifeq ($(strip $(DESTDIR)$(prefix)),) +BUILD_TREE_STATE := $(BUILD_TREE_SRCDIR_INSTALL) +else # Empty $(DESTDIR)$(prefix) +ifeq ($(abs_top_srcdir),$(prefix)) +BUILD_TREE_STATE := $(BUILD_TREE_SRCDIR_INSTALL) +endif +# END srcdir build-tree install checks +endif +# END out-of-build-tree check. +endif + +# Is the build-tree configured yet? +ifeq ($(BUILD_TREE_STATE),) +ifneq ($(wildcard $(abs_top_builddir)/include/mk/config.mk),) +BUILD_TREE_STATE := $(BUILD_TREE_NONSRCDIR_INSTALL) +endif +endif + +ifeq ($(MAKE_3_80_COMPAT),1) +# Trick make 3.80 into thinking that the default goal is all. +.PHONY: default +default: all +else +.DEFAULT_GOAL := all +endif + +endif # END autotools, *clean... + +BUILD_TREE_STATE ?= $(BUILD_TREE_UNCONFIGURED) + +# We can piece together where we're located in the source and object trees with +# just these two vars and $(CURDIR). +export abs_top_srcdir abs_top_builddir BUILD_TREE_STATE + +endif |