X-Git-Url: http://git.rohieb.name/openwrt.git/blobdiff_plain/ba9d778c9706dc3774edcb0216ce551f057cb6e3..6373194f3d114f059b9f0697a63bc8337eb4b09f:/include/host.mk

diff --git a/include/host.mk b/include/host.mk
index 93f86dce8..9b8a32b67 100644
--- a/include/host.mk
+++ b/include/host.mk
@@ -1,28 +1,67 @@
 # 
-# 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
-	@echo "HOST_OS:=`uname`" > $@
-	@echo "HOST_ARCH:=` \
-		$(HOSTCC) -dumpmachine | sed -e s'/-.*//' \
-			-e 's/sparc.*/sparc/' \
-			-e 's/arm.*/arm/' \
-			-e 's/m68k.*/m68k/' \
-			-e 's/ppc/powerpc/' \
-			-e 's/v850.*/v850/' \
-			-e 's/sh[234]/sh/' \
-			-e 's/mips-.*/mips/' \
-			-e 's/mipsel-.*/mipsel/' \
-			-e 's/cris.*/cris/' \
-			-e 's/i[3-9]86/i386/'`" >> $@
-	@echo "GNU_HOST_NAME:=`$(HOSTCC) -dumpmachine`" >> $@
-	@if tar --version 2>&1 | grep 'GNU' >/dev/null; then \
-		echo "TAR_OPTIONS+=--wildcards" >> $@; \
-	fi
+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 \
+			Linux) HOST_ARCH=`uname -m`;; \
+			Darwin) HOST_ARCH=`uname -m`;; \
+			*) HOST_ARCH=`uname -p`;; \
+		esac; \
+		GNU_HOST_NAME=`gcc -dumpmachine`; \
+		[ -z "$$GNU_HOST_NAME" -o "$$HOST_OS" = "Darwin" ] && \
+			GNU_HOST_NAME=`$(TOPDIR)/scripts/config.guess`; \
+		echo "HOST_OS:=$$HOST_OS" > $@; \
+		echo "HOST_ARCH:=$$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`; \
+		[ -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; \
+		PATCH=`which gpatch 2>/dev/null`; \
+		[ -n "$$PATCH" -a -x "$$PATCH" ] || PATCH=`which patch 2>/dev/null`; \
+		echo "PATCH:=$$PATCH" >> $@; \
+	)
+
+endif