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annotate make/linux/makefiles/dtrace.make @ 20973:cb406df0ecc3

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author Tom Rodriguez <tom.rodriguez@oracle.com>
date Tue, 14 Apr 2015 11:36:42 -0700
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1 #
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2 # Copyright (c) 2005, 2012, Oracle and/or its affiliates. All rights reserved.
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3 # Copyright (c) 2012 Red Hat, Inc.
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4 # DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
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5 #
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6 # This code is free software; you can redistribute it and/or modify it
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7 # under the terms of the GNU General Public License version 2 only, as
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8 # published by the Free Software Foundation.
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9 #
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10 # This code is distributed in the hope that it will be useful, but WITHOUT
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11 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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12 # FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
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13 # version 2 for more details (a copy is included in the LICENSE file that
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14 # accompanied this code).
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15 #
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16 # You should have received a copy of the GNU General Public License version
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17 # 2 along with this work; if not, write to the Free Software Foundation,
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18 # Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
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19 #
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20 # Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
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21 # or visit www.oracle.com if you need additional information or have any
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22 # questions.
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23 #
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24 #
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25
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26 # Linux does not build jvm_db
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27 LIBJVM_DB =
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28
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29 # Only OPENJDK builds test and support SDT probes currently.
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30 ifndef OPENJDK
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31 REASON = "This JDK does not support SDT probes"
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32 else
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33
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34 # We need a recent GCC for the default
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35 ifeq "$(shell expr \( $(CC_VER_MAJOR) \>= 4 \) \& \( $(CC_VER_MINOR) \>= 4 \) )" "0"
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36 REASON = "gcc version is too old"
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37 else
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38
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39 # But it does have a SystemTap dtrace compatible sys/sdt.h
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40 ifneq ($(ALT_SDT_H),)
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41 SDT_H_FILE = $(ALT_SDT_H)
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42 else
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43 SDT_H_FILE = /usr/include/sys/sdt.h
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44 endif
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45 DTRACE_ENABLED = $(shell test -f $(SDT_H_FILE) && echo $(SDT_H_FILE))
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46 REASON = "$(SDT_H_FILE) not found"
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47
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48 ifneq ($(DTRACE_ENABLED),)
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49 CFLAGS += -DDTRACE_ENABLED
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50 endif
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51
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52 endif
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53 endif
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54
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55 # Phony target used in vm.make build target to check whether enabled.
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56 .PHONY: dtraceCheck
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57 ifeq ($(DTRACE_ENABLED),)
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58 dtraceCheck:
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59 $(QUIETLY) echo "**NOTICE** Dtrace support disabled: $(REASON)"
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60 else
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61 dtraceCheck:
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62 endif
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63
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64 # It doesn't support HAVE_DTRACE_H though.
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