| 1 | # |
| 2 | # Copyright (C) 2007-2010 OpenWrt.org |
| 3 | # |
| 4 | # This is free software, licensed under the GNU General Public License v2. |
| 5 | # See /LICENSE for more information. |
| 6 | # |
| 7 | |
| 8 | TMP_DIR ?= $(TOPDIR)/tmp |
| 9 | ifeq ($(if $(TARGET_BUILD),,$(DUMP)),) |
| 10 | -include $(TMP_DIR)/.host.mk |
| 11 | endif |
| 12 | |
| 13 | export TAR FIND |
| 14 | |
| 15 | ifneq ($(__host_inc),1) |
| 16 | __host_inc:=1 |
| 17 | |
| 18 | try-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 | |
| 24 | host-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 | *) HOST_ARCH=`uname -p`;; \ |
| 36 | esac; \ |
| 37 | GNU_HOST_NAME=`gcc -dumpmachine`; \ |
| 38 | [ -n "$$GNU_HOST_NAME" ] || \ |
| 39 | GNU_HOST_NAME=`$(SCRIPT_DIR)/config.guess`; \ |
| 40 | echo "HOST_OS:=$$HOST_OS" > $@; \ |
| 41 | echo "HOST_ARCH:=$$HOST_ARCH" >> $@; \ |
| 42 | echo "GNU_HOST_NAME:=$$GNU_HOST_NAME" >> $@; \ |
| 43 | TAR=`which gtar 2>/dev/null`; \ |
| 44 | [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which gnutar 2>/dev/null`; \ |
| 45 | [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar 2>/dev/null`; \ |
| 46 | echo "TAR:=$$TAR" >> $@; \ |
| 47 | FIND=`which gfind 2>/dev/null`; \ |
| 48 | [ -n "$$FIND" -a -x "$$FIND" ] || FIND=`which find 2>/dev/null`; \ |
| 49 | echo "FIND:=$$FIND" >> $@; \ |
| 50 | echo "BASH:=$(shell which bash)" >> $@; \ |
| 51 | if $$FIND -L /tmp -maxdepth 0 >/dev/null 2>/dev/null; then \ |
| 52 | echo "FIND_L=$$FIND -L \$$(1)" >>$@; \ |
| 53 | else \ |
| 54 | echo "FIND_L=$$FIND \$$(1) -follow" >> $@; \ |
| 55 | fi; \ |
| 56 | if xargs --help 2>&1 | grep 'gnu.org' >/dev/null; then \ |
| 57 | echo 'XARGS:=xargs -r' >> $@; \ |
| 58 | else \ |
| 59 | echo 'XARGS:=xargs' >> $@; \ |
| 60 | fi; \ |
| 61 | ) |
| 62 | |
| 63 | endif |
| 64 | |
