Comment 4 for bug 1104017

OK. There is an extra bit in the mailine patch:
https://bugs.launchpad.net/ubuntu/+source/linux/+bug/1105251

which I've not ported back to this bug:

these bits: (for "Fix cross- optional library detection")

--- origs/linux-3.8.0/tools/perf/config/utilities.mak 2013-01-03 13:01:59.000000000 +0000
+++ linux-3.8.0/tools/perf/config/utilities.mak 2013-01-24 18:07:41.000000000 +0000
@@ -190,5 +190,5 @@
  'TMP="$(OUTPUT)$(TMPOUT).$$$$"; \
   $(TRY_CC_MSG) \
   echo "$(1)" | \
- $(CC) -x c - $(2) -o "$$TMP" $(TRY_CC_OUTPUT) && echo y; \
+ $(CROSS-COMPILE)$(CC) -x c - $(2) -o "$$TMP" $(TRY_CC_OUTPUT) && echo y; \
   rm -f "$$TMP"')
diff -ur origs/linux-3.8.0/tools/perf/Makefile linux-3.8.0/tools/perf/Makefile
--- origs/linux-3.8.0/tools/perf/Makefile 2013-01-03 13:01:59.000000000 +0000
+++ linux-3.8.0/tools/perf/Makefile 2013-01-24 18:00:56.000000000 +0000
@@ -64,7 +64,12 @@
 CC = $(CROSS_COMPILE)gcc
 AR = $(CROSS_COMPILE)ar

-# Additional ARCH settings for x86
+# Additional ARCH settings
+ifeq ($(ARCH),arm)
+ override ARCH := arm
+ NO_PERF_REGS := 0
+ LIBUNWIND_LIBS = -lunwind -lunwind-arm
+endif

Oh and add 'armhf' to the arches for which the libunwind8-dev and libaudit-dev build-deps apply.

Sorry for the low-quality patch, but thought I should record it before it gets forgotten.

Add those too and you'll get the libunwind, dwarf, and curses support in perf.