embox

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#
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# Directories.
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#
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export ROOT_DIR       := $(abspath  .)
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export EMBOX_ROOT_DIR := $(abspath $(ROOT_DIR))
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export CONF_DIR        = $(ROOT_DIR)/conf
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export TEMPLATES_DIR   = $(ROOT_DIR)/templates
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export SRC_DIR         = $(ROOT_DIR)/src
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export THIRDPARTY_DIR  = $(ROOT_DIR)/third-party
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export PLATFORM_DIR    = $(ROOT_DIR)/platform
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export PROJECT_DIR     = $(ROOT_DIR)/project
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export EXT_PROJECT_DIR = $(ROOT_DIR)/ext_project
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export SUBPLATFORM_TEMPLATE_DIR  = templates/
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export BUILD_DIR       = $(ROOT_DIR)/build/base
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export EXTERNAL_BUILD_DIR  = $(ROOT_DIR)/build/extbld
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export LOADABLE_DIR    = $(ROOT_DIR)/build/loadable
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export DOC_DIR         = $(ROOT_DIR)/build/doc
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export BIN_DIR         = $(BUILD_DIR)/bin
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export OBJ_DIR         = $(BUILD_DIR)/obj
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export DIST_DIR        = $(ROOT_DIR)/build
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export DIST_BASE_DIR   = $(DIST_DIR)/base
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export GEN_DIR         = $(DIST_BASE_DIR)/gen
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export SRCGEN_DIR      = $(GEN_DIR)
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export MKGEN_DIR       = $(GEN_DIR)
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export AUTOCONF_DIR    = $(GEN_DIR)
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export INCLUDE_INSTALL_DIR  = $(DIST_BASE_DIR)/include
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export ROOTFS_DIR      = $(OBJ_DIR)/rootfs
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export ROOTFS_IMAGE    = $(OBJ_DIR)/rootfs.cpio
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export USER_ROOTFS_DIR = $(CONF_DIR)/rootfs
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export DOT_DIR         = $(DOC_DIR)
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export DOCS_OUT_DIR    = $(DOC_DIR)
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export CACHE_DIR       = mk/.cache
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export EMBOX_DIST_BASE_DIR := $(abspath $(DIST_BASE_DIR))
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export EXTBLD_LIB      = $(abspath $(ROOT_DIR))/mk/extbld/lib.mk
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export EMBOX_GCC_ENV   = $(abspath $(MKGEN_DIR))/embox_gcc_env.sh
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export ANNOTATION_HANDLERS  = mk/mybuild/annotation_handlers
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#
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# Tools.
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#
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# find_tool_impl - finds an utillity to be implementation for requested tool.
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# This should be used to select proper program on different systems, like
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# 'awk' on linux and 'gawk' on bsd. Returns first utility found.
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#
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# Example: $(call find_tool_impl,AWK,gawk awk nawk mawk,awk)
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#
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# Args:
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#   1. tool (uppercase label)
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#   2. space separated list of utillity names to look at
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#   3. default choice
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find_tool_impl = $(shell \
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for i in $2; do \
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	type $$i >/dev/null 2>&1 && \
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	echo $$i && \
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	exit; \
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done; \
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printf "%s: Found no implementation for %s tool, tried: %s; taking '%s' as default\n" "$0" "$1" "$2" "$3" >&2; \
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echo $3)
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export RM     := rm -f
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export CP     := cp
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export MV     := mv -f
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export PRINTF := printf
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export MKDIR  := mkdir -p
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export LN     := ln -s
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export MD5    := $(if $(shell which md5sum 2>/dev/null),md5sum,md5 -q)
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export CPIO   := $(call find_tool_impl,CPIO,gcpio gnucpio cpio,cpio)
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export AWK    := $(call find_tool_impl,AWK,gawk awk nawk mawk,awk)
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export TSORT  := tsort
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export TAC    := $(if $(shell which tac 2>/dev/null),tac,tail -rq)
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export SEQ    := seq -w
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export ECHO   := $(shell which echo) #force using feature-rich echo instead of shell builtin
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