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prep-patch.mk
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prep-patch.mk
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#
# CDDL HEADER START
#
# The contents of this file are subject to the terms of the
# Common Development and Distribution License (the "License").
# You may not use this file except in compliance with the License.
#
# You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
# or http://www.opensolaris.org/os/licensing.
# See the License for the specific language governing permissions
# and limitations under the License.
#
# When distributing Covered Code, include this CDDL HEADER in each
# file and include the License file at usr/src/OPENSOLARIS.LICENSE.
# If applicable, add the following below this CDDL HEADER, with the
# fields enclosed by brackets "[]" replaced with your own identifying
# information: Portions Copyright [yyyy] [name of copyright owner]
#
# CDDL HEADER END
#
#
# Copyright (c) 2010, 2018, Oracle and/or its affiliates. All rights reserved.
#
GPATCH = /usr/bin/patch
PATCH_LEVEL ?= 1
GPATCH_BACKUP = --backup --version-control=numbered
GPATCH_FLAGS = --strip=$(PATCH_LEVEL) $(GPATCH_BACKUP)
#
# Rules for patching source that is downloaded and unpacked or pulled from
# a source repository. Patches should be named
# patches/{patch-file-name}.patch{version} where {patch-file-name} is a
# meaningful name for the patch contents and {version} corresponds to the
# COMPONENT_NAME{version} of the source to be patched. Typically, version
# would be something like "_1", "_2", ... After all {version} patches have
# been applied, a final set of patches without a {version} suffix may be
# applied.
#
# PATCH_DIR can be overridden to move patches to a different location
# PATCH_PATTERN can be overridden to adjust the patch naming scheme that the
# build recognizes.
# EXTRA_PATCHES{version} can be defined in the component Makefile to include
# additional patches.
#
PATCH_PATTERN ?= *.patch*
PATCH_DIR ?= patches
# patches specific to parfait builds.
ifeq ($(strip $(PARFAIT_BUILD)),yes)
PARFAIT_PATCH_DIR = parfait
endif
ALL_PATCHES = $(shell find $(PATCH_DIR) $(PARFAIT_PATCH_DIR) -type f \
-name '$(PATCH_PATTERN)' 2>/dev/null | \
LC_COLLATE=C sort)
# Patches for different source tarballs have _X filename extensions to
# match the _X extensions to the COMPONENT_* make variables. Find these
# extensions, using $(sort) to uniq them to prevent multiple rules from
# getting generated.
PCH_SUFFIXES = $(sort $(patsubst .patch_%,%, $(filter-out .patch,$(suffix $(ALL_PATCHES)))))
define patch-variables
ifeq ($(1),_0)
PATCH_PATTERN$(1) ?= %.patch
PATCHES$(1) = $(filter %.patch,$(ALL_PATCHES))
else
PATCH_PATTERN$(1) ?= %.patch$(1)
PATCHES$(1) = $(filter %.patch$(1),$(ALL_PATCHES))
endif
PATCHES$(1) += $(ADDITIONAL_PATCHES$(1))
ifneq ($$(PATCHES$(1)),)
PATCH_STAMPS$(1) += $$(PATCHES$(1):$(PATCH_DIR)/%=$$(SOURCE_DIR$(1))/.patched-%)
ifeq ($(strip $(PARFAIT_BUILD)),yes)
PATCH_STAMPS$(1) += $$(PATCHES$(1):$(PARFAIT_PATCH_DIR)/%=$$(SOURCE_DIR$(1))/.patched-%)
endif
endif
endef
define patch-rules
ifneq ($$(PATCHES$(1)),)
# We should unpack the source that we patch before we patch it.
$$(PATCH_STAMPS$(1):: $$(UNPACK_STAMP$(1)) unpack
# Adding MAKEFILE_PREREQ because gmake seems to evaluate the need to patch
# before re-unpacking if the Makefile changed. The various stamps are
# removed as part of the unpacking process, and it doesn't appear to
# re-evaluate the need for patching. If we ever move the stamps to the build
# directory, we may not need the dependency any more.
$$(SOURCE_DIR$(1))/.patched-%: $(PATCH_DIR)/% $(MAKEFILE_PREREQ)
$(GPATCH) -d $$(@D) $$(GPATCH_FLAGS) < $$<
$(TOUCH) $$(@)
$$(SOURCE_DIR$(1))/.patched-%: $(PARFAIT_PATCH_DIR)/% $(MAKEFILE_PREREQ)
$(GPATCH) -d $$(@D) $$(GPATCH_FLAGS) < $$<
$(TOUCH) $$(@)
$$(SOURCE_DIR$(1))/.patched: $$(PATCH_STAMPS$(1))
$(TOUCH) $$(@)
patch:: $$(SOURCE_DIR$(1))/.patched
REQUIRED_PACKAGES += text/gnu-patch
endif
endef
# Evaluate the variable assignments immediately.
$(foreach suffix, $(PCH_SUFFIXES), $(eval $(call patch-variables,_$(suffix))))
$(eval $(call patch-variables,)) # this must be last so we don't drop *.patch_%.
# Put the rule evaluations in a variable for deferred evaluation.
define eval-patch-rules
$(foreach suffix, $(PCH_SUFFIXES), $(eval $(call patch-rules,_$(suffix))))
$(eval $(call patch-rules,)) # this must be last so we don't drop *.patch_%.
endef