host.mk: introduce PATCH which refers to either gpatch or patch
[openwrt/openwrt.git] / include / host.mk
1 #
2 # Copyright (C) 2007-2010 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 $(TMP_DIR)/.host.mk
11 endif
12
13 export TAR FIND
14
15 ifneq ($(__host_inc),1)
16 __host_inc:=1
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:=$$GNU_HOST_NAME" >> $@; \
44 TAR=`which gtar 2>/dev/null`; \
45 [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which gnutar 2>/dev/null`; \
46 [ -n "$$TAR" -a -x "$$TAR" ] || TAR=`which tar 2>/dev/null`; \
47 echo "TAR:=$$TAR" >> $@; \
48 FIND=`which gfind 2>/dev/null`; \
49 [ -n "$$FIND" -a -x "$$FIND" ] || FIND=`which find 2>/dev/null`; \
50 echo "FIND:=$$FIND" >> $@; \
51 echo "BASH:=$(shell which bash)" >> $@; \
52 if $$FIND -L /tmp -maxdepth 0 >/dev/null 2>/dev/null; then \
53 echo "FIND_L=$$FIND -L \$$(1)" >>$@; \
54 else \
55 echo "FIND_L=$$FIND \$$(1) -follow" >> $@; \
56 fi; \
57 if xargs --help 2>&1 | grep 'gnu.org' >/dev/null; then \
58 echo 'XARGS:=xargs -r' >> $@; \
59 else \
60 echo 'XARGS:=xargs' >> $@; \
61 fi; \
62 PATCH=`which gpatch 2>/dev/null`; \
63 [ -n "$$PATCH" -a -x "$$PATCH" ] || PATCH=`which patch 2>/dev/null`; \
64 echo "PATCH:=$$PATCH" >> $@; \
65 )
66
67 endif