#
-# Copyright (C) 2006 OpenWrt.org
+# Copyright (C) 2007-2010 OpenWrt.org
#
# This is free software, licensed under the GNU General Public License v2.
# See /LICENSE for more information.
#
-include $(TOPDIR)/.host.mk
+TMP_DIR ?= $(TOPDIR)/tmp
+ifeq ($(if $(TARGET_BUILD),,$(DUMP)),)
+ -include $(TMP_DIR)/.host.mk
+endif
-$(TOPDIR)/.host.mk: $(INCLUDE_DIR)/host.mk
+export TAR FIND
+
+ifneq ($(__host_inc),1)
+__host_inc:=1
+
+try-run = $(shell set -e; \
+ TMP_F="$(TMP_DIR)/try-run.$$$$.tmp"; \
+ if ($(1)) >/dev/null 2>&1; then echo "$(2)"; else echo "$(3)"; fi; \
+ rm -f "$$TMP_F"; \
+)
+
+host-cc-option = $(call try-run, \
+ $(HOSTCC) $(HOST_CFLAGS) $(1) -c -xc /dev/null -o "$$TMP_F",$(1),$(2) \
+)
+
+.PRECIOUS: $(TMP_DIR)/.host.mk
+$(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
+ @mkdir -p $(TMP_DIR)
@( \
HOST_OS=`uname`; \
case "$$HOST_OS" in \
echo "HOST_OS:=$$HOST_OS" > $@; \
echo "HOST_ARCH:=$$HOST_ARCH" >> $@; \
echo "GNU_HOST_NAME:=$$GNU_HOST_NAME" >> $@; \
- if tar --version 2>&1 | grep 'GNU' >/dev/null; then \
- echo "TAR_WILDCARDS:=--wildcards" >> $@; \
+ TAR=`which gtar 2>/dev/null`; \
+ [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which gnutar 2>/dev/null`; \
+ [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar 2>/dev/null`; \
+ echo "TAR:=$$TAR" >> $@; \
+ FIND=`which gfind 2>/dev/null`; \
+ [ -n "$$FIND" -a -x "$$FIND" ] || FIND=`which find 2>/dev/null`; \
+ echo "FIND:=$$FIND" >> $@; \
+ echo "BASH:=$(shell which bash)" >> $@; \
+ if $$FIND -L /tmp -maxdepth 0 >/dev/null 2>/dev/null; then \
+ echo "FIND_L=$$FIND -L \$$(1)" >>$@; \
+ else \
+ echo "FIND_L=$$FIND \$$(1) -follow" >> $@; \
+ fi; \
+ if xargs --help 2>&1 | grep 'gnu.org' >/dev/null; then \
+ echo 'XARGS:=xargs -r' >> $@; \
+ else \
+ echo 'XARGS:=xargs' >> $@; \
fi; \
)
+endif