X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/00ff299f672bb198eaf876e395e4bb683b26fa93..e11397b6d48db209cba391601df610dcff15760f:/include/host.mk

diff --git a/include/host.mk b/include/host.mk
index 1130d5b9a..02365d9ea 100644
--- a/include/host.mk
+++ b/include/host.mk
@@ -1,17 +1,34 @@
 # 
-# 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 $(TMP_DIR)/.host.mk
+TMP_DIR ?= $(TOPDIR)/tmp
+ifeq ($(if $(TARGET_BUILD),,$(DUMP)),)
+  -include $(TMP_DIR)/.host.mk
+endif
 
-export TAR
+export TAR FIND
 
-$(TMP_DIR)/.host.mk: $(INCLUDE_DIR)/host.mk
+ifneq ($(__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 "$$TMP_F",$(1),$(2) \
+)
+
+.PRECIOUS: $(TMP_DIR)/.host.mk
+$(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
+	@mkdir -p $(TMP_DIR)
 	@( \
-		echo -n "BASH:=$(shell which bash)"; \
 		HOST_OS=`uname`; \
 		case "$$HOST_OS" in \
 			Linux) HOST_ARCH=`uname -m`;; \
@@ -23,11 +40,24 @@ $(TMP_DIR)/.host.mk: $(INCLUDE_DIR)/host.mk
 		echo "HOST_OS:=$$HOST_OS" > $@; \
 		echo "HOST_ARCH:=$$HOST_ARCH" >> $@; \
 		echo "GNU_HOST_NAME:=$$GNU_HOST_NAME" >> $@; \
-		TAR=`which gtar`; \
-		[ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar`; \
+		TAR=`which gtar 2>/dev/null`; \
+		[ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which gnutar 2>/dev/null`; \
+		[ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar 2>/dev/null`; \
 		echo "TAR:=$$TAR" >> $@; \
-		ZCAT=`which gzcat`; \
-		[ -n "$$ZCAT" -a -x "$$ZCAT" ] || ZCAT=`which zcat`; \
-		echo "ZCAT:=$$ZCAT" >> $@; \
+		FIND=`which gfind 2>/dev/null`; \
+		[ -n "$$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