#+
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# Copyright (c) 2011, Oracle and/or its affiliates. All rights reserved.+
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# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.+
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#+
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# This code is free software; you can redistribute it and/or modify it+
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# under the terms of the GNU General Public License version 2 only, as+
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# published by the Free Software Foundation.+
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#+
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# This code is distributed in the hope that it will be useful, but WITHOUT+
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or+
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# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License+
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# version 2 for more details (a copy is included in the LICENSE file that+
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# accompanied this code).+
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#+
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# You should have received a copy of the GNU General Public License version+
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# 2 along with this work; if not, write to the Free Software Foundation,+
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# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.+
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#+
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# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA+
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# or visit www.oracle.com if you need additional information or have any+
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# questions.+
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#  +
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#+
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+
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# This file defines variables and macros which are used in the makefiles to +
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# allow distributions to augment or replace common hotspot code with +
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# distribution-specific source files. This capability is disabled when+
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# an OPENJDK build is requested, unless HS_ALT_SRC_REL has been set externally.+
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+
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# Requires: GAMMADIR+
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# Provides:+
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#   variables: HS_COMMON_SRC, HS_ALT_SRC, HS_COMMON_SRC_REL, and HS_ALT_SRC_REL+
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#   functions: altsrc-equiv, if-has-altsrc, altsrc, altsrc-replace+
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+
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HS_COMMON_SRC_REL=src+
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+
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ifneq ($(OPENJDK),true)+
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  # This needs to be changed to a more generic location, but we keep it +
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  # as this for now for compatibility+
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  HS_ALT_SRC_REL=src/closed+
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else+
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  HS_ALT_SRC_REL=NO_SUCH_PATH+
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endif+
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+
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HS_COMMON_SRC=$(GAMMADIR)/$(HS_COMMON_SRC_REL)+
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HS_ALT_SRC=$(GAMMADIR)/$(HS_ALT_SRC_REL)+
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+
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## altsrc-equiv +
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# +
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# Convert a common source path to an alternative source path+
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#+
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# Parameter: An absolute path into the common sources+
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# Result: The matching path to the alternate-source location+
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#+
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altsrc-equiv=$(subst $(HS_COMMON_SRC)/,$(HS_ALT_SRC)/,$(1))+
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+
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+
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## if-has-altsrc+
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#+
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# Conditional macro to test for the existence of an alternate source path+
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#+
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# Parameter: An absolute path into the common sources+
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# Parameter: Result if the alternative-source location exists+
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# Parameter: Result if the alternative-source location does not exist+
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# Result: expands to parameter 2 or 3 depending on existence of alternate source+
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#+
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if-has-altsrc=$(if $(wildcard $(call altsrc-equiv,$(1))),$(2),$(3))+
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+
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+
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## altsrc+
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#+
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# Converts common source path to alternate source path if the alternate +
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# path exists, otherwise evaluates to nul (empty string)+
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# +
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# Parameter: An absolute path into the common sources+
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# Result: The equivalent path to the alternate-source location, if such a +
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#         location exists on the filesystem.  Otherwise it expands to empty.+
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# +
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altsrc=$(call if-has-altsrc,$(1),$(call altsrc-equiv,$(1)))+
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+
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## commonsrc+
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# +
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# Returns parameter.+
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#+
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commonsrc=$(1)+
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+
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+
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## altsrc-replace+
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#+
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# Converts a common source path to an alternate source path if the alternate+
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# source path exists.  Otherwise it evaluates to the input common source path.+
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#+
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# Parameter: An absolute path into the common sources+
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# Result: A path to either the common or alternate sources+
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#+
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altsrc-replace=$(call if-has-altsrc,$(1),$(call altsrc-equiv,$(1)),$(1))+
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