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bitcoin/depends/Makefile
Dmitry Goncharov 8b5a28fa78
depends: disable builtin rules and suffixes. 
When there is no rule to build a target in the makefile, make looks
for a builtin rule.
When --no-builtin-rules is specified make no longer performs this lookup.

E.g. the following in an excerpt from make -d output.
Here, make looks for a rule to build 'all'.

Considering target file 'all'.
 File 'all' does not exist.
 Looking for an implicit rule for 'all'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.o'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.c'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.cc'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.C'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.cpp'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.p'.
 Trying pattern rule with stem 'all'.
 Trying implicit prerequisite 'all.f'.
...
Many more lines like this are omitted.

Because this build system does not use make builtin rules or suffixes,
there is no benefit in having builtin rules enabled.

There are 2 benefits in having builtin rules disabled.

1. Improves performance by eliminating redundant lookups.
2. Simplifies troubleshooting by reducing the output of make -d or
make -p.
2025-11-03 15:20:06 +00:00

288 lines
11 KiB
Makefile
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.NOTPARALLEL :
# Disable builtin rules and suffixes.
MAKEFLAGS += --no-builtin-rules
# Pattern rule to print variables, e.g. make print-top_srcdir
print-%: FORCE
@echo '$*'='$($*)'
# When invoking a sub-make, keep only the command line variable definitions
# matching the pattern in the filter function.
#
# e.g. invoking:
# $ make A=1 C=1 print-MAKEOVERRIDES print-MAKEFLAGS
#
# with the following in the Makefile:
# MAKEOVERRIDES := $(filter A=% B=%,$(MAKEOVERRIDES))
#
# will print:
# MAKEOVERRIDES = A=1
# MAKEFLAGS = -- A=1
#
# this is because as the GNU make manual says:
# The command line variable definitions really appear in the variable
# MAKEOVERRIDES, and MAKEFLAGS contains a reference to this variable.
#
# and since the GNU make manual also says:
# variables defined on the command line are passed to the sub-make through
# MAKEFLAGS
#
# this means that sub-makes will be invoked as if:
# $(MAKE) A=1 blah blah
MAKEOVERRIDES := $(filter V=%,$(MAKEOVERRIDES))
SOURCES_PATH ?= $(BASEDIR)/sources
WORK_PATH = $(BASEDIR)/work
BASE_CACHE ?= $(BASEDIR)/built
SDK_PATH ?= $(BASEDIR)/SDKs
NO_BOOST ?=
NO_LIBEVENT ?=
NO_QT ?=
NO_QR ?=
NO_WALLET ?=
NO_ZMQ ?=
NO_USDT ?=
# Default NO_IPC value is 1 on Windows
NO_IPC ?= $(if $(findstring mingw32,$(HOST)),1,)
LTO ?=
FALLBACK_DOWNLOAD_PATH ?= https://bitcoincore.org/depends-sources
C_STANDARD ?= c11
CXX_STANDARD ?= c++20
BUILD = $(shell ./config.guess)
PATCHES_PATH = $(BASEDIR)/patches
BASEDIR = $(CURDIR)
HASH_LENGTH:=11
DOWNLOAD_CONNECT_TIMEOUT:=30
DOWNLOAD_RETRIES:=3
HOST_ID_SALT ?= salt
BUILD_ID_SALT ?= salt
ifneq ($(DEBUG),)
release_type=debug
else
release_type=release
endif
base_build_dir=$(WORK_PATH)/build
base_staging_dir=$(WORK_PATH)/staging
base_download_dir=$(WORK_PATH)/download
build:=$(shell ./config.sub $(BUILD))
host:=$(build)
ifneq ($(HOST),)
host:=$(HOST)
endif
HOST ?= $(BUILD)
canonical_host:=$(shell ./config.sub $(HOST))
build_arch =$(firstword $(subst -, ,$(build)))
build_vendor=$(word 2,$(subst -, ,$(build)))
full_build_os:=$(subst $(build_arch)-$(build_vendor)-,,$(build))
build_os:=$(findstring linux,$(full_build_os))
build_os+=$(findstring darwin,$(full_build_os))
build_os+=$(findstring freebsd,$(full_build_os))
build_os+=$(findstring netbsd,$(full_build_os))
build_os+=$(findstring openbsd,$(full_build_os))
build_os:=$(strip $(build_os))
ifeq ($(build_os),)
build_os=$(full_build_os)
endif
host_arch=$(firstword $(subst -, ,$(canonical_host)))
host_vendor=$(word 2,$(subst -, ,$(canonical_host)))
full_host_os:=$(subst $(host_arch)-$(host_vendor)-,,$(canonical_host))
host_os:=$(findstring linux,$(full_host_os))
host_os+=$(findstring darwin,$(full_host_os))
host_os+=$(findstring freebsd,$(full_host_os))
host_os+=$(findstring netbsd,$(full_host_os))
host_os+=$(findstring openbsd,$(full_host_os))
host_os+=$(findstring mingw32,$(full_host_os))
host_os:=$(strip $(host_os))
ifeq ($(host_os),)
host_os=$(full_host_os)
endif
$(host_arch)_$(host_os)_prefix=$(BASEDIR)/$(host)
$(host_arch)_$(host_os)_host=$(host)
host_prefix=$($(host_arch)_$(host_os)_prefix)
build_prefix=$(host_prefix)/native
build_host=$(build)
all: install
include hosts/$(host_os).mk
include hosts/default.mk
include builders/$(build_os).mk
include builders/default.mk
include packages/packages.mk
# Previously, we directly invoked the well-known programs using $(shell ...)
# to construct build_id_string. However, that was problematic because:
#
# 1. When invoking a shell, GNU Make special-cases exit code 127 (command not
# found) by not capturing the output but instead passing it through. This is
# not done for any other exit code.
#
# 2. Characters like '#' (from these programs' output) would end up in make
# variables like build_id_string, which would be wrongly interpreted by make
# when these variables were used.
#
# Therefore, we should avoid having arbitrary strings in make variables where
# possible. The gen_id script used here hashes the output to construct a
# "make-safe" id.
#
# Also note that these lines need to be:
#
# 1. After including {hosts,builders}/*.mk, since they rely on the tool
# variables (e.g. build_CC, host_STRIP, etc.) to be set.
#
# 2. Before including packages/*.mk (excluding packages/packages.mk), since
# they rely on the build_id variables
#
build_id:=$(shell env CC='$(build_CC)' C_STANDARD='$(C_STANDARD)' CXX='$(build_CXX)' CXX_STANDARD='$(CXX_STANDARD)' \
AR='$(build_AR)' NM='$(build_NM)' RANLIB='$(build_RANLIB)' STRIP='$(build_STRIP)' SHA256SUM='$(build_SHA256SUM)' \
DEBUG='$(DEBUG)' \
./gen_id '$(BUILD_ID_SALT)' 'GUIX_ENVIRONMENT=$(realpath $(GUIX_ENVIRONMENT))')
$(host_arch)_$(host_os)_id:=$(shell env CC='$(host_CC)' C_STANDARD='$(C_STANDARD)' CXX='$(host_CXX)' CXX_STANDARD='$(CXX_STANDARD)' \
CPPFLAGS='$(CPPFLAGS)' CFLAGS='$(CFLAGS)' CXXFLAGS='$(CXXFLAGS)' LDFLAGS='$(LDFLAGS)' \
AR='$(host_AR)' NM='$(host_NM)' RANLIB='$(host_RANLIB)' STRIP='$(host_STRIP)' SHA256SUM='$(build_SHA256SUM)' \
DEBUG='$(DEBUG)' LTO='$(LTO)' \
./gen_id '$(HOST_ID_SALT)' 'GUIX_ENVIRONMENT=$(realpath $(GUIX_ENVIRONMENT))')
boost_packages_$(NO_BOOST) = $(boost_packages)
libevent_packages_$(NO_LIBEVENT) = $(libevent_packages)
qrencode_packages_$(NO_QR) = $(qrencode_$(host_os)_packages)
qt_packages_$(NO_QT) = $(qt_packages) $(qt_$(host_os)_packages) $(qt_$(host_arch)_$(host_os)_packages) $(qrencode_packages_)
qt_native_packages_$(NO_QT) = $(qt_native_packages)
wallet_packages_$(NO_WALLET) = $(sqlite_packages)
zmq_packages_$(NO_ZMQ) = $(zmq_packages)
ipc_packages_$(NO_IPC) = $(ipc_packages)
usdt_packages_$(NO_USDT) = $(usdt_$(host_os)_packages)
packages += $($(host_arch)_$(host_os)_packages) $($(host_os)_packages) $(boost_packages_) $(libevent_packages_) $(qt_packages_) $(wallet_packages_) $(usdt_packages_)
native_packages += $($(host_arch)_$(host_os)_native_packages) $($(host_os)_native_packages) $(qt_native_packages_)
ifneq ($(zmq_packages_),)
packages += $(zmq_packages)
endif
ifneq ($(ipc_packages_),)
packages += $(ipc_packages)
native_packages += $(multiprocess_native_packages)
endif
all_packages = $(packages) $(native_packages)
meta_depends = Makefile config.guess config.sub funcs.mk builders/default.mk hosts/default.mk hosts/$(host_os).mk builders/$(build_os).mk
include funcs.mk
final_build_id_long+=$(shell $(build_SHA256SUM) toolchain.cmake.in)
final_build_id+=$(shell echo -n "$(final_build_id_long)" | $(build_SHA256SUM) | cut -c-$(HASH_LENGTH))
$(host_prefix)/.stamp_$(final_build_id): $(native_packages) $(packages)
rm -rf $(@D)
mkdir -p $(@D)
echo copying packages: $^
echo to: $(@D)
cd $(@D); $(foreach package,$^, $(build_TAR) xf $($(package)_cached); )
echo To build Bitcoin Core with these packages, pass \'--toolchain $(@D)/toolchain.cmake\' to the first CMake invocation.
touch $@
ifeq ($(host),$(build))
crosscompiling=FALSE
else
crosscompiling=TRUE
endif
$(host_prefix)/toolchain.cmake : toolchain.cmake.in $(host_prefix)/.stamp_$(final_build_id)
@mkdir -p $(@D)
sed -e 's|@depends_crosscompiling@|$(crosscompiling)|' \
-e 's|@host@|$(host)|' \
-e 's|@host_system_name@|$($(host_os)_cmake_system_name)|' \
-e 's|@host_system_version@|$($(host_os)_cmake_system_version)|' \
-e 's|@host_arch@|$(host_arch)|' \
-e 's|@CC@|$(host_CC)|' \
-e 's|@CXX@|$(host_CXX)|' \
-e 's|@OSX_SDK@|$(OSX_SDK)|' \
-e 's|@AR@|$(host_AR)|' \
-e 's|@RANLIB@|$(host_RANLIB)|' \
-e 's|@STRIP@|$(host_STRIP)|' \
-e 's|@OBJCOPY@|$(host_OBJCOPY)|' \
-e 's|@OBJDUMP@|$(host_OBJDUMP)|' \
-e 's|@CFLAGS@|$(strip $(host_CFLAGS))|' \
-e 's|@CFLAGS_RELEASE@|$(strip $(host_release_CFLAGS))|' \
-e 's|@CFLAGS_DEBUG@|$(strip $(host_debug_CFLAGS))|' \
-e 's|@CXXFLAGS@|$(strip $(host_CXXFLAGS))|' \
-e 's|@CXXFLAGS_RELEASE@|$(strip $(host_release_CXXFLAGS))|' \
-e 's|@CXXFLAGS_DEBUG@|$(strip $(host_debug_CXXFLAGS))|' \
-e 's|@CPPFLAGS@|$(strip $(host_CPPFLAGS))|' \
-e 's|@CPPFLAGS_RELEASE@|$(strip $(host_release_CPPFLAGS))|' \
-e 's|@CPPFLAGS_DEBUG@|$(strip $(host_debug_CPPFLAGS))|' \
-e 's|@LDFLAGS@|$(strip $(host_LDFLAGS))|' \
-e 's|@LDFLAGS_RELEASE@|$(strip $(host_release_LDFLAGS))|' \
-e 's|@LDFLAGS_DEBUG@|$(strip $(host_debug_LDFLAGS))|' \
-e 's|@qt_packages@|$(qt_packages_)|' \
-e 's|@qrencode_packages@|$(qrencode_packages_)|' \
-e 's|@zmq_packages@|$(zmq_packages_)|' \
-e 's|@wallet_packages@|$(wallet_packages_)|' \
-e 's|@usdt_packages@|$(usdt_packages_)|' \
-e 's|@ipc_packages@|$(ipc_packages_)|' \
$< > $@
touch $@
define check_or_remove_cached
mkdir -p $(BASE_CACHE)/$(host)/$(package) && cd $(BASE_CACHE)/$(host)/$(package); \
$(build_SHA256SUM) -c $($(package)_cached_checksum) >/dev/null 2>/dev/null || \
( rm -f $($(package)_cached_checksum); \
if test -f "$($(package)_cached)"; then echo "Checksum mismatch for $(package). Forcing rebuild.."; rm -f $($(package)_cached_checksum) $($(package)_cached); fi )
endef
define check_or_remove_sources
mkdir -p $($(package)_source_dir); cd $($(package)_source_dir); \
test -f $($(package)_fetched) && ( $(build_SHA256SUM) -c $($(package)_fetched) >/dev/null 2>/dev/null || \
( echo "Checksum missing or mismatched for $(package) source. Forcing re-download."; \
rm -f $($(package)_all_sources) $($(1)_fetched))) || true
endef
check-packages:
@$(foreach package,$(all_packages),$(call check_or_remove_cached,$(package));)
check-sources:
@$(foreach package,$(all_packages),$(call check_or_remove_sources,$(package));)
$(host_prefix)/toolchain.cmake: check-packages
check-packages: check-sources
clean-all: clean
@rm -rf $(SOURCES_PATH) x86_64* i686* mips* arm* aarch64* powerpc* riscv32* riscv64* s390x*
clean:
@rm -rf $(WORK_PATH) $(BASE_CACHE) $(BUILD) *.log
install: check-packages $(host_prefix)/toolchain.cmake
download-one: check-sources $(all_sources)
download-osx:
@$(MAKE) -s HOST=x86_64-apple-darwin download-one
download-linux:
@$(MAKE) -s HOST=x86_64-unknown-linux-gnu download-one
download-win:
@$(MAKE) -s HOST=x86_64-w64-mingw32 download-one
download: download-osx download-linux download-win
$(foreach package,$(all_packages),$(eval $(call ext_add_stages,$(package))))
.PHONY: install cached clean clean-all download-one download-osx download-linux download-win download check-packages check-sources
.PHONY: FORCE
$(V).SILENT:
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