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brchess/Makefile

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Makefile
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# Makefile - brchess Makefile, **GNU make only**
#
# Copyright (C) 2021-2024 Bruno Raoult ("br")
# Licensed under the GNU General Public License v3.0 or later.
# Some rights reserved. See COPYING.
#
# You should have received a copy of the GNU General Public License along with this
# program. If not, see <https://www.gnu.org/licenses/gpl-3.0-standalone.html>.
#
# SPDX-License-Identifier: GPL-3.0-or-later <https://spdx.org/licenses/GPL-3.0-or-later.html>
#
SHELL := /bin/bash
BEAR := bear
TOUCH := touch
RM := rm
RMDIR := rmdir
MAKE := make
SRCDIR := ./src
INCDIR := ./src # used by ./test sources
OBJDIR := ./obj
BINDIR := ./bin
DEPDIR := ./dep
TSTDIR := ./test
BRLIB := ./brlib
BRINCDIR := $(BRLIB)/include
BRLIBDIR := $(BRLIB)/lib
CCLSROOT := .ccls-root
CCLSFILE := compile_commands.json
SRC := $(wildcard $(SRCDIR)/*.c) # project sources
SRC_FN := $(notdir $(SRC)) # source basename
OBJ := $(addprefix $(OBJDIR)/,$(SRC_FN:.c=.o))
TSTSRC := $(wildcard $(TSTDIR)/*.c)
LIB := br_$(shell uname -m) # library name
LIBS := $(strip -l$(LIB))
DEP_FN := $(SRC_FN)
DEP := $(addprefix $(DEPDIR)/,$(DEP_FN:.c=.d))
TARGET_FN := brchess
TARGET := $(addprefix $(BINDIR)/,$(TARGET_FN))
ASMFILES := $(SRC:.c=.s) $(TSTSRC:.c=.s)
CPPFILES := $(SRC:.c=.i) $(TSTSRC:.c=.i)
##################################### Check for compiler and requested build
BUILDS := release dev perf debug
# last compilation build
BUILDFILE := .lastbuild
lastbuild := $(file < $(BUILDFILE))
# default to gcc
CC ?= cc
ifeq ($(CC),cc)
CC = gcc
endif
# if no build specified, use last one
ifeq ($(build),)
build := $(lastbuild)
endif
# if build is still undefined, set a default
ifeq ($(build),)
build := release
endif
# check for valid build
ifeq ($(filter $(build),$(BUILDS)),)
$(error Error: Unknown build=`$(build)`. Possible builds are: $(BUILDS))
endif
# if new build, rewrite BUILDFILE
ifeq ($(build),$(lastbuild))
$(info Using last used build:`$(build)`.)
else
$(info Using new build:`$(build)` (previous:$(lastbuild)))
$(file >$(BUILDFILE),$(build))
endif
##################################### set a version string
# inspired from:
# https://eugene-babichenko.github.io/blog/2019/09/28/nightly-versions-makefiles/
# last commit and date
COMMIT := $(shell git rev-parse --short HEAD)
DATE := $(shell git log -1 --format=%cd --date=format:"%Y%m%d")
# get last commit w/ tag & associated tag, if any
TAG_COMM := $(shell git rev-list --abbrev-commit --tags --max-count=1)
ifneq ($(TAG_COMMIT),)
TAG := $(shell git describe --abbrev=0 --tags ${TG_COMM} 2>/dev/null || true)
VERSION := $(TAG:v%=%)
endif
# if no version, use last commit and date.
# else, if last commit != last tag commit, add commit and date to version number
ifeq ($(VERSION),)
VERSION := $(build)-$(COMMIT)-$(DATE)
else ifneq ($(COMMIT), $(TAG_COMMIT))
VERSION := $(VERSION)-next-$(build)-$(COMMIT)-$(DATE)
endif
# if uncommited changes, add "dirty" indicator
ifneq ($(shell git status --porcelain),)
VERSION := $(VERSION)-dirty
endif
##################################### pre-processor flags
CPPFLAGS := -I$(BRINCDIR) -I$(INCDIR) -DVERSION=\"$(VERSION)\"
CPPFLAGS += -DDIAGRAM_SYM # UTF8 symbols in diagrams
ifeq ($(build),release)
CPPFLAGS += -DNDEBUG # assert (unused)
else # ifeq ($(build),dev)
CPPFLAGS += -DBUG_ON # brlib bug.h
# fen.c
#CPPFLAGS += -DDEBUG_FEN # FEN decoding
# hash / TT
#CPPFLAGS += -DZOBRIST_VERIFY # double chk zobrist
#CPPFLAGS += -DPERFT_MOVE_HISTORY # perft, keep prev moves
# attack.c
#CPPFLAGS += -DDEBUG_ATTACK_ATTACKERS # sq_attackers
#CPPFLAGS += -DDEBUG_ATTACK_PINNERS # sq_pinners details
# eval.c eval-simple.c
CPPFLAGS += -DDEBUG_EVAL # eval
# old unused flags
#CPPFLAGS += -DDEBUG_POS # position.c
#CPPFLAGS += -DDEBUG_MOVE # move generation
#CPPFLAGS += -DDEBUG_EVAL # eval functions
endif
# remove extraneous spaces (due to spaces before comments)
CPPFLAGS := $(strip $(CPPFLAGS))
##################################### compiler / linker flags
CFLAGS := -std=gnu11
CFLAGS += -Wall -Wextra -Wshadow -Wmissing-declarations
CFLAGS += -march=native
LDFLAGS := --static
LDFLAGS += -L$(BRLIBDIR)
### dev OR release
ifeq ($(build),release)
CFLAGS += -O3
CFLAGS += -funroll-loops
CFLAGS += -flto
#CFLAGS += -g
#CFLAGS += -ginline-points # inlined funcs debug info
LDFLAGS += -flto
else ifeq ($(build),dev)
CFLAGS += -Og
CFLAGS += -g # symbols (gdb, perf, etc.)
CFLAGS += -ginline-points # inlined funcs debug info
#CFLAGS += -pg # gprof
# Next one may be useful for valgrind (when invalid instructions)
#CFLAGS += -mno-tbm
else ifeq ($(build),perf)
CFLAGS += -O3
CFLAGS += -g # symbols (gdb, perf, etc.)
CFLAGS += -ginline-points # inlined funcs debug info
CFLAGS += -funroll-loops
else ifeq ($(build),debug)
CFLAGS += -Og
CFLAGS += -g # symbols (gdb, perf, etc.)
CFLAGS += -ginline-points # inlined funcs debug info
# for gprof
#CFLAGS += -pg
# Next one may be useful for valgrind (when invalid instructions)
#CFLAGS += -mno-tbm
endif
CFLAGS := $(strip $(CFLAGS))
LDFLAGS := $(strip $(LDFLAGS))
##################################### dependency flags
DEPFLAGS = -MMD -MP -MF $(DEPDIR)/$*.d
##################################### archiver/dependency flags
ALL_CFLAGS = $(DEPFLAGS) $(CPPFLAGS) $(CFLAGS)
ALL_LDFLAGS = $(LDFLAGS) $(LIBS)
##################################### Multi-targets
# We can have an issue with Make's "-j" option, in some situations,
# for example "make -j2 clean testing".
# See https://stackoverflow.com/a/8496333/3079831
# Check if job server supported:
ifeq ($(filter jobserver, $(.FEATURES)),)
# Job server not supported: sub-makes will only start one job unless
# you specify a higher number here. Here we use a MS Windows environment
# variable specifying number of processors.
JOBSARG := -j $(NUMBER_OF_PROCESSORS)
else
# Job server is supported; let GNU Make work as normal.
JOBSARG :=
endif
# .FEATURES only works in GNU Make 3.81+.
# If GNU make is older, assume job server support.
ifneq ($(firstword $(sort 3.81 $(MAKE_VERSION))),3.81)
# If you are using GNU Make < 3.81 that does not support job servers, you
# might want to specify -jN parameter here instead.
JOBSARG :=
endif
ifneq ($(words $(MAKECMDGOALS)),1)
.NOTPARALLEL:
# The "all" target is required in the list,
# in case user invokes make with no targets.
$(sort all $(MAKECMDGOALS)):
@$(MAKE) $(JOBSARG) -f $(firstword $(MAKEFILE_LIST)) $@
else
##################################### General targets
.PHONY: all release dev perf debug compile libs clean cleanall
all: libs testing $(TARGET)
release:
$(MAKE) BUILD=release clean all
dev:
$(MAKE) BUILD=dev clean all
perf:
$(MAKE) BUILD=perf clean all
debug:
$(MAKE) BUILD=debug clean all
compile: brlib objs
libs: brlib
clean: cleandep cleanasmcpp cleanobj cleanbin
cleanall: clean cleandepdir cleanobjdir cleanallbrlib cleanbindir
##################################### cleaning functions
# rmfiles - delete a list of files if they exist.
# $(1): the directory
# $(2): The string to include in action output - "cleaning X files."
# see: https://stackoverflow.com/questions/6783243/functions-in-makefiles
#
# Don't use wildcard like "$(DIR)/*.o", so we can control mismatches between
# list and actual files in directory.
# See rmdir below.
define rmfiles
@#echo "rmfiles=+$(1)+"
$(eval $@_EXIST = $(wildcard $(1)))
@#echo "existfile=+${$@_EXIST}+"
@if [[ -n "${$@_EXIST}" ]]; then \
echo "cleaning $(2) files." ; \
$(RM) ${$@_EXIST} ; \
fi
endef
# rmdir - delete a directory if it exists.
# $(1): the directory
# $(2): The string to include in action output - "removing X dir."
#
# Don't use $(RM) -rf, to control unexpected dep files.
# See rmfile above.
define rmdir
@#echo "rmdir +$(1)+"
$(eval $@_EXIST = $(wildcard $(1)))
@#echo "existdir=+${$@_EXIST}+"
@if [[ -n "${$@_EXIST}" ]]; then \
echo "removing $(2) dir." ; \
$(RMDIR) ${$@_EXIST} ; \
fi
endef
##################################### dirs creation
.PHONY: alldirs
ALLDIRS := $(DEPDIR) $(OBJDIR) $(BINDIR)
alldirs: $(ALLDIRS)
# Here, we have something like:
# a: a
# a will be built if (1) older than a, or (2) does not exist. Here only (2).
$(ALLDIRS): $@
@echo creating $@ directory.
@mkdir -p $@
##################################### Dependencies files
.PHONY: cleandep cleandepdir
-include $(wildcard $(DEP))
# Don't use "rm $(DEPDIR)/*.d", to understand mismatches between dep/ and src/
# files.
# See second rule below.
cleandep:
$(call rmfiles,$(DEP),depend)
@#echo cleaning dependency files.
@#$(RM) -f $(DEP)
cleandepdir:
$(call rmdir,$(DEPDIR),depend)
@#[ -d $(DEPDIR) ] && echo cleaning depend files && $(RM) -f $(DEP) || true
##################################### brchess objects
.PHONY: objs cleanobj cleanobjdir
objs: $(OBJ)
cleanobj:
$(call rmfiles,$(OBJ),object)
cleanobjdir: cleanobj
$(call rmdir,$(OBJDIR),objects)
# The part right of '|' are "order-only prerequisites": They are build as
# "normal" ones, but do not imply to rebuild target.
$(OBJDIR)/%.o: $(BUILDFILE)
$(OBJDIR)/%.o: $(SRCDIR)/%.c $(BUILDFILE) | $(OBJDIR) $(DEPDIR)
@echo compiling brchess module: $< "->" $@.
$(CC) -c $(ALL_CFLAGS) $< -o $@
##################################### brlib libraries
.PHONY: cleanbrlib cleanallbrlib brlib
cleanbrlib:
$(MAKE) -C $(BRLIB) clean
cleanallbrlib:
$(MAKE) -C $(BRLIB) cleanall
export build
brlib:
$(info calling with build=$(build))
$(MAKE) -e -C $(BRLIB) lib-static
unexport build
##################################### brchess binaries
.PHONY: targets cleanbin cleanbindir
targets: $(TARGET)
cleanbin:
$(call rmfiles,$(TARGET),binary)
cleanbindir:
$(call rmdir,$(BINDIR),binaries)
$(TARGET): libs $(OBJ) | $(BINDIR)
@echo linking $@.
$(CC) $(LDFLAGS) $(OBJ) $(LIBS) -o $@
##################################### pre-processed (.i) and assembler (.s) output
.PHONY: cleanasmcpp
cleanasmcpp:
@$(call rmfiles,$(ASMFILES) $(CPPFILES),asm and pre-processed)
%.i: %.c
@echo "generating $@ (cpp processed)."
@$(CC) -E $(CPPFLAGS) $(CFLAGS) $< -o $@
%.s: %.c
@echo "generating $@ (asm)."
$(CC) -S -fverbose-asm $(CPPFLAGS) $(CFLAGS) $< -o $@
##################################### LSP (ccls)
.PHONY: ccls
ccls: $(CCLSFILE)
$(CCLSROOT):
@echo creating project root file.
@$(TOUCH) $@
# generate compile_commands.json.
# TODO: add Makefile dependencies.
# also, if cclsfile is newer than sources, no need to clean objects file
# (and to run bear).
# maybe run cleanobj cleanlibobj in commands ?
$(CCLSFILE): cleanobj cleanbrlib libs | $(CCLSROOT)
@echo "Generating ccls compile commands file ($@)."
@$(BEAR) -- $(MAKE)
##################################### valgrind (mem check)
.PHONY: memcheck
VALGRIND = valgrind
VALGRINDFLAGS = --leak-check=full --show-leak-kinds=all
VALGRINDFLAGS += --track-origins=yes --sigill-diagnostics=yes
VALGRINDFLAGS += --quiet --show-error-list=yes
VALGRINDFLAGS += --log-file=valgrind.out
# We need to suppress libreadline leaks here. See :
# https://stackoverflow.com/questions/72840015
VALGRINDFLAGS += --suppressions=etc/libreadline.supp
memcheck: targets
@$(VALGRIND) $(VALGRINDFLAGS) $(BINDIR)/brchess
##################################### test binaries
.PHONY: testing
TEST := piece-test fen-test bitboard-test movegen-test attack-test
TEST += movedo-test perft-test tt-test
PIECE_OBJS := piece.o
FEN_OBJS := $(PIECE_OBJS) fen.o position.o bitboard.o board.o \
hq.o attack.o hash.o init.o misc.o alloc.o move.o eval-defs.o
BB_OBJS := $(FEN_OBJS)
MOVEGEN_OBJS := $(BB_OBJS) move-gen.o
ATTACK_OBJS := $(MOVEGEN_OBJS)
MOVEDO_OBJS := $(ATTACK_OBJS) move-do.o
PERFT_OBJS := $(MOVEDO_OBJS) search.o
TT_OBJS := $(MOVEDO_OBJS)
TEST := $(addprefix $(BINDIR)/,$(TEST))
PIECE_OBJS := $(addprefix $(OBJDIR)/,$(PIECE_OBJS))
FEN_OBJS := $(addprefix $(OBJDIR)/,$(FEN_OBJS))
BB_OBJS := $(addprefix $(OBJDIR)/,$(BB_OBJS))
MOVEGEN_OBJS := $(addprefix $(OBJDIR)/,$(MOVEGEN_OBJS))
ATTACK_OBJS := $(addprefix $(OBJDIR)/,$(ATTACK_OBJS))
MOVEDO_OBJS := $(addprefix $(OBJDIR)/,$(MOVEDO_OBJS))
PERFT_OBJS := $(addprefix $(OBJDIR)/,$(PERFT_OBJS))
TT_OBJS := $(addprefix $(OBJDIR)/,$(TT_OBJS))
testing: $(TEST)
bin/piece-test: test/piece-test.c $(FEN_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(FEN_OBJS) $(ALL_LDFLAGS) -o $@
bin/fen-test: test/fen-test.c test/common-test.h $(FEN_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(FEN_OBJS) $(ALL_LDFLAGS) -o $@
bin/bitboard-test: test/bitboard-test.c test/common-test.h $(BB_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(BB_OBJS) $(ALL_LDFLAGS) -o $@
bin/movegen-test: test/movegen-test.c test/common-test.h $(MOVEGEN_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(MOVEGEN_OBJS) $(ALL_LDFLAGS) -o $@
bin/attack-test: test/attack-test.c test/common-test.h $(ATTACK_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(ATTACK_OBJS) $(ALL_LDFLAGS) -o $@
bin/movedo-test: test/movedo-test.c test/common-test.h $(MOVEDO_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(MOVEDO_OBJS) $(ALL_LDFLAGS) -o $@
bin/perft-test: test/perft-test.c test/common-test.h $(PERFT_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(PERFT_OBJS) $(ALL_LDFLAGS) -o $@
bin/tt-test: test/tt-test.c test/common-test.h $(TT_OBJS)
@echo linking $@ test executable.
@$(CC) $(ALL_CFLAGS) $< $(TT_OBJS) $(ALL_LDFLAGS) -o $@
##################################### Makefile debug
.PHONY: showflags wft
info:
@printf "CFLAGS: +%s+\n" "$(CFLAGS)"
@printf "CPPFLAGS: +%s+\n" "$(CPPFLAGS)"
@printf "DEPFLAGS: +%s+\n" "$(DEPFLAGS)"
@printf "LDFLAGS: +%s+\n" "$(LDFLAGS)"
@printf "DEPFLAGS: +%s+\n" "$(DEPFLAGS)"
@printf "VERSION: +%s+\n" "$(VERSION)"
wtf:
@printf "BRLIBDIR=%s\n" "$(BRLIBDIR)"
@printf "LDFLAGS=%s\n\n" "$(LDFLAGS)"
@#printf "LIBOBJ=%s\n\n" "$(LIBOBJ)"
@#printf "OBJDIR=%s\n\n" "$(OBJDIR)"
@#printf "OBJ=%s\n\n" "$(OBJ)"
@#echo LIBOBJ=$(LIBOBJ)
@#echo DEP=$(DEP)
@#echo LIBSRC=$(LIBSRC)
zob:
@#$(CC) $(LDFLAGS) $(CPPFLAGS) $(CFLAGS) $< $(LIBS) src/util.c -o util
##################################### End of multi-targets
endif
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