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