#

# Copyright (c) 2019, Oracle and/or its affiliates. All rights reserved.

# DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.

#

# This code is free software; you can redistribute it and/or modify it

# under the terms of the GNU General Public License version 2 only, as

# published by the Free Software Foundation.  Oracle designates this

# particular file as subject to the "Classpath" exception as provided

# by Oracle in the LICENSE file that accompanied this code.

#

# This code is distributed in the hope that it will be useful, but WITHOUT

# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or

# FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License

# version 2 for more details (a copy is included in the LICENSE file that

# accompanied this code).

#

# You should have received a copy of the GNU General Public License version

# 2 along with this work; if not, write to the Free Software Foundation,

# Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.

#

# Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA

# or visit www.oracle.com if you need additional information or have any

# questions.

#

ifeq (,$(_MAKEBASE_GMK))

  $(error You must include MakeBase.gmk prior to including Execute.gmk)

endif

################################################################################

#

# Code for handling the SetupExecute macro.

#

################################################################################

################################################################################

# Setup make rules for executing an arbitrary command.

#

# Parameter 1 is the name of the rule. This name is used as variable prefix,

# and the targets generated are listed in a variable by that name.

#

# Remaining parameters are named arguments. These include:

#   COMMAND     : The command to execute

#   POST_COMMAND:

#   OUTPUT_DIR  : The directory that will contain the result from the command

#   OUTPUT_FILE : Use this if the command results in a single output file.

#   INFO        : Message to display at LOG=info level when running command (optional).

#   DEPS        : Dependencies for the execution to take place

#

# Setup make rules for copying files, with an option to do more complex

SetupExecute = $(NamedParamsMacroTemplate)

define SetupExecuteBody

  ifeq ($$($1_COMMAND), )

    $$(error COMMAND is missing in SetupExecute $1)

  endif

  $1_BASE := $$($1_OUTPUT_DIR)/_$1

  $1_MARKER := $$($1_BASE).marker

    $1_RESULT := $$($1_MARKER)

  else

    # If we have a single output file, we don't need a separate marker

    $1_RESULT := $$($1_OUTPUT_FILE)

  endif

  $$($1_RESULT): $$($1_DEPS)

	$$(call LogInfo, $$($1_INFO))

	$$(call MakeDir, $$(@D))

	$$(call ExecuteWithLog, $$($1_BASE), \

	    $$($1_COMMAND))

        ifeq ($$($1_RESULT), $$($1_MARKER))

	  $$(TOUCH) $$@

        endif

  # Export all our generated targets in $1, and the final target in $1_TARGET.

  $1 := $$($1_RESULT)

  $1_TARGET := $$($1_RESULT)

  ifneq ($$($1_POST_COMMAND), )

    $1_POST_MARKER := $$($1_BASE)_post.marker

    $$($1_POST_MARKER): $$($1_MARKER)

	$$(call ExecuteWithLog, $$($1_BASE), \

	    $$($1_POST_COMMAND))

	$$(TOUCH) $$@

    $1 += $$($1_POST_MARKER)

    $1_TARGET := $$($1_POST_MARKER)

  endif

endef