1#
2# Copyright (C) 2007-2015 OpenWrt.org
3#
4# This is free software, licensed under the GNU General Public License v2.
5# See /LICENSE for more information.
6#
7
8TMP_DIR ?= $(TOPDIR)/tmp
9ifeq ($(if $(TARGET_BUILD),,$(DUMP)),)
10  -include $(TMP_DIR)/.host.mk
11endif
12
13ifneq ($(__host_inc),1)
14__host_inc:=1
15
16export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
17
18try-run = $(shell set -e; \
19	TMP_F="$(TMP_DIR)/try-run.$$$$.tmp"; \
20	if ($(1)) >/dev/null 2>&1; then echo "$(2)"; else echo "$(3)"; fi; \
21	rm -f "$$TMP_F"; \
22)
23
24host-cc-option = $(call try-run, \
25	$(HOSTCC) $(HOST_CFLAGS) $(1) -c -xc /dev/null -o "$$TMP_F",$(1),$(2) \
26)
27
28.PRECIOUS: $(TMP_DIR)/.host.mk
29$(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
30	@mkdir -p $(TMP_DIR)
31	@( \
32		HOST_OS=`uname`; \
33		case "$$HOST_OS" in \
34			Linux) HOST_ARCH=`uname -m`;; \
35			Darwin) HOST_ARCH=`uname -m`;; \
36			*) HOST_ARCH=`uname -p`;; \
37		esac; \
38		GNU_HOST_NAME=`gcc -dumpmachine`; \
39		[ -z "$$GNU_HOST_NAME" -o "$$HOST_OS" = "Darwin" ] && \
40			GNU_HOST_NAME=`$(TOPDIR)/scripts/config.guess`; \
41		echo "HOST_OS:=$$HOST_OS" > $@; \
42		echo "HOST_ARCH:=$$HOST_ARCH" >> $@; \
43		echo "GNU_HOST_NAME:=$$GNU_HOST_NAME" >> $@; \
44		if gfind -L /dev/null || find -L /dev/null; then \
45			echo "FIND_L=find -L \$$(1)" >> $@; \
46		else \
47			echo "FIND_L=find \$$(1) -follow" >> $@; \
48		fi \
49	) >/dev/null 2>/dev/null
50
51endif
52