include/host.mk

   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
   8 TMP_DIR ?= $(TOPDIR)/tmp
   9 ifeq ($(if $(TARGET_BUILD),,$(DUMP)),)
  10   -include $(TMP_DIR)/.host.mk
  11 endif
  12
  13 ifneq ($(__host_inc),1)
  14 __host_inc:=1
  15
  16 export PATH:=$(TOPDIR)/staging_dir/host/bin:$(PATH)
  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                         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
  51 endif