X-Git-Url: https://git.rohieb.name/openwrt.git/blobdiff_plain/7f3b481ec937e79225ef78f167070b2249e2f62a..a2782fd54d99c36f901cba66fb454c0b31801e5d:/include/host.mk

diff --git a/include/host.mk b/include/host.mk
index 497d04450..02365d9ea 100644
--- a/include/host.mk
+++ b/include/host.mk
@@ -1,12 +1,12 @@
 # 
-# Copyright (C) 2007 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.
 #
 
 TMP_DIR ?= $(TOPDIR)/tmp
-ifndef DUMP
+ifeq ($(if $(TARGET_BUILD),,$(DUMP)),)
   -include $(TMP_DIR)/.host.mk
 endif
 
@@ -14,6 +14,17 @@ 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 "$$TMP_F",$(1),$(2) \
+)
+
 .PRECIOUS: $(TMP_DIR)/.host.mk
 $(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
 	@mkdir -p $(TMP_DIR)
@@ -30,6 +41,7 @@ $(TMP_DIR)/.host.mk: $(TOPDIR)/include/host.mk
 		echo "HOST_ARCH:=$$HOST_ARCH" >> $@; \
 		echo "GNU_HOST_NAME:=$$GNU_HOST_NAME" >> $@; \
 		TAR=`which gtar 2>/dev/null`; \
+		[ -n "$$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`; \