Refactor common makefile fragments

In preparation for setting up another Kati stage, move some common
settings and tools into a common folder. This way it's a bit easier to
see that they're safe to use, and that they shouldn't depend on anything
outside of the common folder.

Bug: 117463001
Test: build-aosp_arm.ninja is the same before and after
Change-Id: Ief4b75a4dbe45b73ffd03bf32c60695c816d979d
This commit is contained in:
Dan Willemsen
2018-10-18 16:11:40 -07:00
parent 17c9e2a296
commit 7ddc50a066
6 changed files with 88 additions and 51 deletions

56
common/core.mk Normal file
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#
# Copyright (C) 2018 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# Only use ANDROID_BUILD_SHELL to wrap around bash.
# DO NOT use other shells such as zsh.
ifdef ANDROID_BUILD_SHELL
SHELL := $(ANDROID_BUILD_SHELL)
else
# Use bash, not whatever shell somebody has installed as /bin/sh
# This is repeated from main.mk, since envsetup.sh runs this file
# directly.
SHELL := /bin/bash
endif
# Utility variables.
empty :=
space := $(empty) $(empty)
comma := ,
# Note that make will eat the newline just before endef.
define newline
endef
# The pound character "#"
define pound
#
endef
# Unfortunately you can't simply define backslash as \ or \\.
backslash := \a
backslash := $(patsubst %a,%,$(backslash))
# Prevent accidentally changing these variables
.KATI_READONLY := SHELL empty space comma newline pound backslash
# Basic warning/error wrappers. These will be redefined to include the local
# module information when reading Android.mk files.
define pretty-warning
$(warning $(1))
endef
define pretty-error
$(error $(1))
endef

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common/math.mk Normal file
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#
# Copyright (C) 2017 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
###########################################################
# Basic math functions for non-negative integers <= 100
#
# (SDK versions for example)
###########################################################
__MATH_POS_NUMBERS := 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 \
21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 \
41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 \
61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 \
81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100
__MATH_NUMBERS := 0 $(__MATH_POS_NUMBERS)
math-error = $(call pretty-error,$(1))
math-expect :=
math-expect-true :=
math-expect :=
math-expect-error :=
# Run the math tests with:
# make -f ${ANDROID_BUILD_TOP}/build/make/core/math.mk RUN_MATH_TESTS=true
# $(get_build_var CKATI) -f ${ANDROID_BUILD_TOP}//build/make/core/math.mk RUN_MATH_TESTS=true
ifdef RUN_MATH_TESTS
MATH_TEST_FAILURE :=
MATH_TEST_ERROR :=
math-error = $(if $(MATH_TEST_ERROR),,$(eval MATH_TEST_ERROR:=$(1)))
define math-expect
$(eval got:=$$$1) \
$(if $(subst $(got),,$(2))$(subst $(2),,$(got))$(MATH_TEST_ERROR), \
$(if $(MATH_TEST_ERROR),$(warning $(MATH_TEST_ERROR)),$(warning $$$1 '$(got)' != '$(2)')) \
$(eval MATH_TEST_FAILURE := true)) \
$(eval MATH_TEST_ERROR :=) \
$(eval got:=)
endef
math-expect-true = $(call math-expect,$(1),true)
math-expect-false = $(call math-expect,$(1),)
define math-expect-error
$(eval got:=$$$1) \
$(if $(subst $(MATH_TEST_ERROR),,$(2))$(subst $(2),,$(MATH_TEST_ERROR)), \
$(warning '$(MATH_TEST_ERROR)' != '$(2)') \
$(eval MATH_TEST_FAILURE := true)) \
$(eval MATH_TEST_ERROR :=) \
$(eval got:=)
endef
endif
# Returns true if $(1) is a non-negative integer <= 100, otherwise returns nothing.
define math_is_number
$(strip \
$(if $(1),,$(call math-error,Argument missing)) \
$(if $(word 2,$(1)),$(call math-error,Multiple words in a single argument: $(1))) \
$(if $(filter $(1),$(__MATH_NUMBERS)),true))
endef
define math_is_zero
$(strip \
$(if $(word 2,$(1)),$(call math-error,Multiple words in a single argument: $(1))) \
$(if $(filter 0,$(1)),true))
endef
$(call math-expect-true,(call math_is_number,0))
$(call math-expect-true,(call math_is_number,2))
$(call math-expect-false,(call math_is_number,foo))
$(call math-expect-false,(call math_is_number,-1))
$(call math-expect-error,(call math_is_number,1 2),Multiple words in a single argument: 1 2)
$(call math-expect-error,(call math_is_number,no 2),Multiple words in a single argument: no 2)
$(call math-expect-true,(call math_is_zero,0))
$(call math-expect-false,(call math_is_zero,1))
$(call math-expect-false,(call math_is_zero,foo))
$(call math-expect-error,(call math_is_zero,1 2),Multiple words in a single argument: 1 2)
$(call math-expect-error,(call math_is_zero,no 2),Multiple words in a single argument: no 2)
define _math_check_valid
$(if $(call math_is_number,$(1)),,$(call math-error,Only non-negative integers <= 100 are supported (not $(1))))
endef
$(call math-expect,(call _math_check_valid,0))
$(call math-expect,(call _math_check_valid,1))
$(call math-expect,(call _math_check_valid,100))
$(call math-expect-error,(call _math_check_valid,-1),Only non-negative integers <= 100 are supported (not -1))
$(call math-expect-error,(call _math_check_valid,101),Only non-negative integers <= 100 are supported (not 101))
$(call math-expect-error,(call _math_check_valid,),Argument missing)
$(call math-expect-error,(call _math_check_valid,1 2),Multiple words in a single argument: 1 2)
# return a list containing integers ranging from [$(1),$(2)]
define int_range_list
$(strip \
$(call _math_check_valid,$(1))$(call _math_check_valid,$(2)) \
$(if $(call math_is_zero,$(1)),0)\
$(wordlist $(if $(call math_is_zero,$(1)),1,$(1)),$(2),$(__MATH_POS_NUMBERS)))
endef
$(call math-expect,(call int_range_list,0,1),0 1)
$(call math-expect,(call int_range_list,1,1),1)
$(call math-expect,(call int_range_list,1,2),1 2)
$(call math-expect,(call int_range_list,2,1),)
$(call math-expect-error,(call int_range_list,1,101),Only non-negative integers <= 100 are supported (not 101))
# Returns the greater of $1 or $2.
# If $1 or $2 is not a positive integer <= 100, then an error is generated.
define math_max
$(strip $(call _math_check_valid,$(1)) $(call _math_check_valid,$(2)) \
$(lastword $(filter $(1) $(2),$(__MATH_NUMBERS))))
endef
$(call math-expect-error,(call math_max),Argument missing)
$(call math-expect-error,(call math_max,1),Argument missing)
$(call math-expect-error,(call math_max,1 2,3),Multiple words in a single argument: 1 2)
$(call math-expect,(call math_max,0,1),1)
$(call math-expect,(call math_max,1,0),1)
$(call math-expect,(call math_max,1,1),1)
$(call math-expect,(call math_max,5,42),42)
$(call math-expect,(call math_max,42,5),42)
define math_gt_or_eq
$(if $(filter $(1),$(call math_max,$(1),$(2))),true)
endef
define math_lt
$(if $(call math_gt_or_eq,$(1),$(2)),,true)
endef
$(call math-expect-true,(call math_gt_or_eq, 2, 1))
$(call math-expect-true,(call math_gt_or_eq, 1, 1))
$(call math-expect-false,(call math_gt_or_eq, 1, 2))
# $1 is the variable name to increment
define inc_and_print
$(strip $(eval $(1) := $($(1)) .)$(words $($(1))))
endef
ifdef RUN_MATH_TESTS
a :=
$(call math-expect,(call inc_and_print,a),1)
$(call math-expect,(call inc_and_print,a),2)
$(call math-expect,(call inc_and_print,a),3)
$(call math-expect,(call inc_and_print,a),4)
endif
# Returns the words in $2 that are numbers and are less than $1
define numbers_less_than
$(strip \
$(foreach n,$2, \
$(if $(call math_is_number,$(n)), \
$(if $(call math_lt,$(n),$(1)), \
$(n)))))
endef
$(call math-expect,(call numbers_less_than,0,0 1 2 3),)
$(call math-expect,(call numbers_less_than,1,0 2 1 3),0)
$(call math-expect,(call numbers_less_than,2,0 2 1 3),0 1)
$(call math-expect,(call numbers_less_than,3,0 2 1 3),0 2 1)
$(call math-expect,(call numbers_less_than,4,0 2 1 3),0 2 1 3)
$(call math-expect,(call numbers_less_than,3,0 2 1 3 2),0 2 1 2)
_INT_LIMIT_WORDS := $(foreach a,x x,$(foreach b,x x x x x x x x x x x x x x x x,\
$(foreach c,x x x x x x x x x x x x x x x x,x x x x x x x x x x x x x x x x)))
define _int_encode
$(if $(filter $(words x $(_INT_LIMIT_WORDS)),$(words $(wordlist 1,$(1),x $(_INT_LIMIT_WORDS)))),\
$(call math-error,integer greater than $(words $(_INT_LIMIT_WORDS)) is not supported!),\
$(wordlist 1,$(1),$(_INT_LIMIT_WORDS)))
endef
# _int_max returns the maximum of the two arguments
# input: two (x) lists; output: one (x) list
# integer cannot be passed in directly. It has to be converted using _int_encode.
define _int_max
$(subst xx,x,$(join $(1),$(2)))
endef
# first argument is greater than second argument
# output: non-empty if true
# integer cannot be passed in directly. It has to be converted using _int_encode.
define _int_greater-than
$(filter-out $(words $(2)),$(words $(call _int_max,$(1),$(2))))
endef
# first argument equals to second argument
# output: non-empty if true
# integer cannot be passed in directly. It has to be converted using _int_encode.
define _int_equal
$(filter $(words $(1)),$(words $(2)))
endef
# first argument is greater than or equal to second argument
# output: non-empty if true
# integer cannot be passed in directly. It has to be converted using _int_encode.
define _int_greater-or-equal
$(call _int_greater-than,$(1),$(2))$(call _int_equal,$(1),$(2))
endef
define int_plus
$(words $(call _int_encode,$(1)) $(call _int_encode,$(2)))
endef
$(call math-expect,(call int_plus,0,0),0)
$(call math-expect,(call int_plus,0,1),1)
$(call math-expect,(call int_plus,1,0),1)
$(call math-expect,(call int_plus,1,100),101)
$(call math-expect,(call int_plus,100,100),200)
define int_subtract
$(strip \
$(if $(call _int_greater-or-equal,$(call _int_encode,$(1)),$(call _int_encode,$(2))),\
$(words $(filter-out xx,$(join $(call _int_encode,$(1)),$(call _int_encode,$(2))))),\
$(call math-error,subtract underflow $(1) - $(2))))
endef
$(call math-expect,(call int_subtract,0,0),0)
$(call math-expect,(call int_subtract,1,0),1)
$(call math-expect,(call int_subtract,1,1),0)
$(call math-expect,(call int_subtract,100,1),99)
$(call math-expect,(call int_subtract,200,100),100)
$(call math-expect-error,(call int_subtract,0,1),subtract underflow 0 - 1)
define int_multiply
$(words $(foreach a,$(call _int_encode,$(1)),$(call _int_encode,$(2))))
endef
$(call math-expect,(call int_multiply,0,0),0)
$(call math-expect,(call int_multiply,1,0),0)
$(call math-expect,(call int_multiply,1,1),1)
$(call math-expect,(call int_multiply,100,1),100)
$(call math-expect,(call int_multiply,1,100),100)
$(call math-expect,(call int_multiply,4,100),400)
$(call math-expect,(call int_multiply,100,4),400)
define int_divide
$(if $(filter 0,$(2)),$(call math-error,division by zero is not allowed!),$(strip \
$(if $(call _int_greater-or-equal,$(call _int_encode,$(1)),$(call _int_encode,$(2))), \
$(call int_plus,$(call int_divide,$(call int_subtract,$(1),$(2)),$(2)),1),0)))
endef
$(call math-expect,(call int_divide,1,1),1)
$(call math-expect,(call int_divide,200,1),200)
$(call math-expect,(call int_divide,200,3),66)
$(call math-expect,(call int_divide,1,2),0)
$(call math-expect-error,(call int_divide,0,0),division by zero is not allowed!)
$(call math-expect-error,(call int_divide,1,0),division by zero is not allowed!)
ifdef RUN_MATH_TESTS
ifdef MATH_TEST_FAILURE
math-tests:
@echo FAIL
@false
else
math-tests:
@echo PASS
endif
.PHONY: math-tests
endif

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#
# Copyright (C) 2018 The Android Open Source Project
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
###########################################################
## Convert to lower case without requiring a shell, which isn't cacheable.
##
## $(1): string
###########################################################
to-lower=$(subst A,a,$(subst B,b,$(subst C,c,$(subst D,d,$(subst E,e,$(subst F,f,$(subst G,g,$(subst H,h,$(subst I,i,$(subst J,j,$(subst K,k,$(subst L,l,$(subst M,m,$(subst N,n,$(subst O,o,$(subst P,p,$(subst Q,q,$(subst R,r,$(subst S,s,$(subst T,t,$(subst U,u,$(subst V,v,$(subst W,w,$(subst X,x,$(subst Y,y,$(subst Z,z,$1))))))))))))))))))))))))))
###########################################################
## Convert to upper case without requiring a shell, which isn't cacheable.
##
## $(1): string
###########################################################
to-upper=$(subst a,A,$(subst b,B,$(subst c,C,$(subst d,D,$(subst e,E,$(subst f,F,$(subst g,G,$(subst h,H,$(subst i,I,$(subst j,J,$(subst k,K,$(subst l,L,$(subst m,M,$(subst n,N,$(subst o,O,$(subst p,P,$(subst q,Q,$(subst r,R,$(subst s,S,$(subst t,T,$(subst u,U,$(subst v,V,$(subst w,W,$(subst x,X,$(subst y,Y,$(subst z,Z,$1))))))))))))))))))))))))))
# Sanity-check to-lower and to-upper
lower := abcdefghijklmnopqrstuvwxyz-_
upper := ABCDEFGHIJKLMNOPQRSTUVWXYZ-_
ifneq ($(lower),$(call to-lower,$(upper)))
$(error to-lower sanity check failure)
endif
ifneq ($(upper),$(call to-upper,$(lower)))
$(error to-upper sanity check failure)
endif
lower :=
upper :=
###########################################################
## Returns true if $(1) and $(2) are equal. Returns
## the empty string if they are not equal.
###########################################################
define streq
$(strip $(if $(strip $(1)),\
$(if $(strip $(2)),\
$(if $(filter-out __,_$(subst $(strip $(1)),,$(strip $(2)))$(subst $(strip $(2)),,$(strip $(1)))_),,true), \
),\
$(if $(strip $(2)),\
,\
true)\
))
endef
###########################################################
## Convert "a b c" into "a:b:c"
###########################################################
define normalize-path-list
$(subst $(space),:,$(strip $(1)))
endef
###########################################################
## Convert "a b c" into "a,b,c"
###########################################################
define normalize-comma-list
$(subst $(space),$(comma),$(strip $(1)))
endef
###########################################################
## Read the word out of a colon-separated list of words.
## This has the same behavior as the built-in function
## $(word n,str).
##
## The individual words may not contain spaces.
##
## $(1): 1 based index
## $(2): value of the form a:b:c...
###########################################################
define word-colon
$(word $(1),$(subst :,$(space),$(2)))
endef
###########################################################
## Convert "a=b c= d e = f" into "a=b c=d e=f"
##
## $(1): list to collapse
## $(2): if set, separator word; usually "=", ":", or ":="
## Defaults to "=" if not set.
###########################################################
define collapse-pairs
$(eval _cpSEP := $(strip $(if $(2),$(2),=)))\
$(strip $(subst $(space)$(_cpSEP)$(space),$(_cpSEP),$(strip \
$(subst $(_cpSEP), $(_cpSEP) ,$(1)))$(space)))
endef
###########################################################
## Given a list of pairs, if multiple pairs have the same
## first components, keep only the first pair.
##
## $(1): list of pairs
## $(2): the separator word, such as ":", "=", etc.
define uniq-pairs-by-first-component
$(eval _upbfc_fc_set :=)\
$(strip $(foreach w,$(1), $(eval _first := $(word 1,$(subst $(2),$(space),$(w))))\
$(if $(filter $(_upbfc_fc_set),$(_first)),,$(w)\
$(eval _upbfc_fc_set += $(_first)))))\
$(eval _upbfc_fc_set :=)\
$(eval _first:=)
endef