perf_counter tools: add perf-report to the Makefile

Build it explicitly until it's a proper builtin command.
Signed-off-by: NIngo Molnar <mingo@elte.hu>

Documentation/perf_counter/Makefile

@@ -228,7 +228,7 @@ COMPAT_CFLAGS =
 COMPAT_OBJS =
 LIB_H =
 LIB_OBJS =
-PROGRAMS =
+PROGRAMS = perf-report
 SCRIPT_PERL =
 SCRIPT_SH =
 TEST_PROGRAMS =
@@ -808,6 +808,10 @@ clean:
 	$(RM) $(htmldocs).tar.gz $(manpages).tar.gz
 	$(RM) PERF-VERSION-FILE PERF-CFLAGS PERF-BUILD-OPTIONS
 
+# temporary hack:
+perf-report: perf-report.cc ../../include/linux/perf_counter.h Makefile
+	g++ -g -O2 -Wall -lrt -o $@ $<
+
 .PHONY: all install clean strip
 .PHONY: shell_compatibility_test please_set_SHELL_PATH_to_a_more_modern_shell
 .PHONY: .FORCE-PERF-VERSION-FILE TAGS tags cscope .FORCE-PERF-CFLAGS