parisc: make default cross compiler search more robust (v3)

People/distros vary how they prefix the toolchain name for 64bit builds.
Rather than enforce one convention over another, add a for loop which
does a search for all the general prefixes.

For 64bit builds, we now search for (in order):
	hppa64-unknown-linux-gnu
	hppa64-linux-gnu
	hppa64-linux

For 32bit builds, we look for:
	hppa-unknown-linux-gnu
	hppa-linux-gnu
	hppa-linux
	hppa2.0-unknown-linux-gnu
	hppa2.0-linux-gnu
	hppa2.0-linux
	hppa1.1-unknown-linux-gnu
	hppa1.1-linux-gnu
	hppa1.1-linux

This patch was initiated by Mike Frysinger, with feedback from Jeroen
Roovers, John David Anglin and Helge Deller.

Signed-off-by: Mike Frysinger <vapier@gentoo.org>
Signed-off-by: Jeroen Roovers <jer@gentoo.org>
Signed-off-by: John David Anglin <dave.anglin@bell.net>
Signed-off-by: Helge Deller <deller@gmx.de>

diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile
index 2f967cc..1976900 100644 (file)
--- a/arch/parisc/Makefile
+++ b/arch/parisc/Makefile
@@ -23,24 +23,21 @@ NM          = sh $(srctree)/arch/parisc/nm
 CHECKFLAGS     += -D__hppa__=1
 LIBGCC         = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name)
 
-MACHINE                := $(shell uname -m)
-NATIVE         := $(if $(filter parisc%,$(MACHINE)),1,0)
-
 ifdef CONFIG_64BIT
 UTS_MACHINE    := parisc64
 CHECKFLAGS     += -D__LP64__=1 -m64
-WIDTH          := 64
+CC_ARCHES      = hppa64
 else # 32-bit
-WIDTH          :=
+CC_ARCHES      = hppa hppa2.0 hppa1.1
 endif
 
-# attempt to help out folks who are cross-compiling
-ifeq ($(NATIVE),1)
-CROSS_COMPILE  := hppa$(WIDTH)-linux-
-else
- ifeq ($(CROSS_COMPILE),)
- CROSS_COMPILE := hppa$(WIDTH)-linux-gnu-
- endif
+ifneq ($(SUBARCH),$(UTS_MACHINE))
+       ifeq ($(CROSS_COMPILE),)
+               CC_SUFFIXES = linux linux-gnu unknown-linux-gnu
+               CROSS_COMPILE := $(call cc-cross-prefix, \
+                       $(foreach a,$(CC_ARCHES), \
+                       $(foreach s,$(CC_SUFFIXES),$(a)-$(s)-)))
+       endif
 endif
 
 OBJCOPY_FLAGS =-O binary -R .note -R .comment -S