depends: add shared dependency builder

See the README's in depends for documentation

depends/Makefile

@@ -0,0 +1,114 @@
+.NOTPARALLEL :
+
+SOURCES_PATH ?= $(BASEDIR)/sources
+BASE_CACHE ?= $(BASEDIR)/built
+SDK_PATH ?= $(BASEDIR)/SDKs
+NO_QT ?=
+NO_WALLET ?=
+NO_UPNP ?=
+
+BUILD = $(shell ./config.guess)
+HOST ?= $(BUILD)
+PATCHES_PATH = $(BASEDIR)/patches
+BASEDIR = $(CURDIR)
+HASH_LENGTH:=11
+
+host:=$(BUILD)
+ifneq ($(HOST),)
+host:=$(HOST)
+host_toolchain:=$(HOST)-
+endif
+
+base_build_dir=$(BASEDIR)/work/build
+base_staging_dir=$(BASEDIR)/work/staging
+canonical_host:=$(shell ./config.sub $(HOST))
+build:=$(shell ./config.sub $(BUILD))
+
+build_arch =$(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,$(full_build_os))
+build_os:=$(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 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=$(build)
+
+AT_$(V):=
+AT_:=@
+AT:=$(AT_$(V))
+
+all: install
+
+include hosts/$(host_os).mk
+include hosts/default.mk
+include builders/$(build_os).mk
+include builders/default.mk
+include packages/packages.mk
+
+qt_packages_$(NO_QT) = $(qt_packages) $(qt_$(host_os)_packages)
+qt_native_packages_$(NO_QT) = $(qt_native_packages)
+wallet_packages_$(NO_WALLET) = $(wallet_packages)
+upnp_packages_$(NO_UPNP) = $(upnp_packages)
+
+packages += $($(host_arch)_$(host_os)_packages) $($(host_os)_packages) $(qt_packages_) $(wallet_packages_) $(upnp_packages_)
+native_packages += $($(host_arch)_$(host_os)_native_packages) $($(host_os)_native_packages) $(qt_native_packages_)
+all_packages = $(packages) $(native_packages)
+
+meta_depends = Makefile builders/default.mk hosts/default.mk hosts/$(host_os).mk builders/$(build_os).mk
+
+$(host_arch)_$(host_os)_native_toolchain?=$($(host_os)_native_toolchain)
+
+include funcs.mk
+
+toolchain_path=$($($(host_arch)_$(host_os)_native_toolchain)_prefixbin)
+final_build_id_long+=$(shell $(build_SHA256SUM) config.site.in)
+final_build_id+=$(shell echo -n $(final_build_id_long) | $(build_SHA256SUM) | cut -c-$(HASH_LENGTH))
+$(host_prefix)/.stamp_$(final_build_id): | $(native_packages) $(packages)
+	$(AT)rm -rf $(@D)
+	$(AT)mkdir -p $(@D)
+	$(AT)echo copying packages: $|
+	$(AT)echo to: $(@D)
+	$(AT)cd $(@D); $(foreach package,$|, tar xf $($(package)_cached); )
+	$(AT)touch $@
+
+$(host_prefix)/share/config.site : config.site.in $(host_prefix)/.stamp_$(final_build_id)
+	$(AT)@mkdir -p $(@D)
+	$(AT)sed -e 's|@HOST@|$(host)|' \
+            -e 's|@CC@|$(toolchain_path)$(host_CC)|' \
+            -e 's|@CXX@|$(toolchain_path)$(host_CXX)|' \
+            -e 's|@AR@|$(toolchain_path)$(host_AR)|' \
+            -e 's|@RANLIB@|$(toolchain_path)$(host_RANLIB)|' \
+            -e 's|@NM@|$(toolchain_path)$(host_NM)|' \
+            -e 's|@STRIP@|$(toolchain_path)$(host_STRIP)|' \
+            -e 's|@build_os@|$(build_os)|' \
+            -e 's|@host_os@|$(host_os)|' \
+            -e 's|@CFLAGS@|$(host_CFLAGS)|' \
+            -e 's|@CXXFLAGS@|$(host_CXXFLAGS)|' \
+            -e 's|@LDFLAGS@|$(host_LDFLAGS)|' \
+            -e 's|@no_qt@|$(NO_QT)|' \
+            -e 's|@no_wallet@|$(NO_WALLET)|' \
+            -e 's|@no_upnp@|$(NO_UPNP)|' \
+            $< > $@
+	$(AT)touch $@
+
+install: $(host_prefix)/share/config.site
+download: $(all_sources)
+.PHONY: install cached