depends: add shared dependency builder

See the README's in depends for documentation

1 files changed, 219 insertions, 0 deletions

diff --git a/depends/funcs.mk b/depends/funcs.mk
new file mode 100644
index 0000000000..4c47cc926e
--- /dev/null
+++ b/depends/funcs.mk
@@ -0,0 +1,219 @@
+define int_vars
+#Set defaults for vars which may be overridden per-package
+$(1)_cc=$($($(1)_type)_CC)
+$(1)_cxx=$($($(1)_type)_CXX)
+$(1)_objc=$($($(1)_type)_OBJC)
+$(1)_objcxx=$($($(1)_type)_OBJCXX)
+$(1)_ar=$($($(1)_type)_AR)
+$(1)_ranlib=$($($(1)_type)_RANLIB)
+$(1)_libtool=$($($(1)_type)_LIBTOOL)
+$(1)_nm=$($($(1)_type)_NM)
+$(1)_cflags=$($($(1)_type)_CFLAGS)
+$(1)_cxxflags=$($($(1)_type)_CXXFLAGS)
+$(1)_ldflags=$($($(1)_type)_LDFLAGS) -L$($($(1)_type)_prefix)/lib
+$(1)_cppflags:=-I$($($(1)_type)_prefix)/include
+$(1)_recipe_hash:=
+endef
+
+define int_get_all_dependencies
+$(sort $(foreach dep,$(2),$(2) $(call int_get_all_dependencies,$(1),$($(dep)_dependencies))))
+endef
+
+define fetch_file
+(test -f $(SOURCES_PATH)/$(3) || ( mkdir -p $$($(1)_extract_dir) && $(build_DOWNLOAD) "$$($(1)_extract_dir)/$(3).temp" "$(2)" && echo "$(4)  $$($(1)_extract_dir)/$(3).temp" | $(build_SHA256SUM) -c && mv $$($(1)_extract_dir)/$(3).temp $(SOURCES_PATH)/$(3) ))
+endef
+
+define int_get_build_recipe_hash
+$(eval $(1)_all_file_checksums:=$(shell $(build_SHA256SUM) $(meta_depends) packages/$(1).mk $(addprefix $(PATCHES_PATH)/$(1)/,$($(1)_patches))))
+$(eval $(1)_recipe_hash:=$(shell echo -n "$($(1)_all_file_checksums)" | $(build_SHA256SUM)))
+endef
+
+define int_get_build_id
+$(eval $(1)_dependencies += $($(1)_$(host_arch)_$(host_os)_dependencies) $($(1)_$(host_os)_dependencies))
+$(eval $(1)_all_dependencies:=$(call int_get_all_dependencies,$(1),$($($(1)_type)_native_toolchain) $($(1)_dependencies)))
+$(foreach dep,$($(1)_all_dependencies),$(eval $(1)_build_id_deps+=$(dep)-$($(dep)_version)-$($(dep)_recipe_hash)))
+$(eval $(1)_build_id_long:=$(1)-$($(1)_version)-$($(1)_recipe_hash) $($(1)_build_id_deps))
+$(eval $(1)_build_id:=$(shell echo -n "$($(1)_build_id_long)" | $(build_SHA256SUM) | cut -c-$(HASH_LENGTH)))
+final_build_id_long+=$($(package)_build_id_long)
+
+#compute package-specific paths
+$(1)_build_subdir?=.
+$(1)_download_file?=$($(1)_file_name)
+$(1)_source:=$(SOURCES_PATH)/$($(1)_file_name)
+$(1)_staging_dir=$(base_staging_dir)/$(host)/$(1)/$($(1)_version)-$($(1)_build_id)
+$(1)_staging_prefix_dir:=$$($(1)_staging_dir)$($($(1)_type)_prefix)
+$(1)_extract_dir:=$(base_build_dir)/$(host)/$(1)/$($(1)_version)-$($(1)_build_id)
+$(1)_build_dir:=$$($(1)_extract_dir)/$$($(1)_build_subdir)
+$(1)_patch_dir:=$(base_build_dir)/$(host)/$(1)/$($(1)_version)-$($(1)_build_id)/.patches-$($(1)_build_id)
+$(1)_prefixbin:=$($($(1)_type)_prefix)/bin/
+$(1)_cached:=$(BASE_CACHE)/$(host)/$(1)/$(1)-$($(1)_version)-$($(1)_build_id).tar.gz
+
+#stamps
+$(1)_fetched=$$($(1)_extract_dir)/.stamp_fetched
+$(1)_extracted=$$($(1)_extract_dir)/.stamp_extracted
+$(1)_preprocessed=$$($(1)_extract_dir)/.stamp_preprocessed
+$(1)_cleaned=$$($(1)_extract_dir)/.stamp_cleaned
+$(1)_built=$$($(1)_build_dir)/.stamp_built
+$(1)_configured=$$($(1)_build_dir)/.stamp_configured
+$(1)_staged=$$($(1)_staging_dir)/.stamp_staged
+$(1)_postprocessed=$$($(1)_staging_prefix_dir)/.stamp_postprocessed
+$(1)_download_path_fixed=$(subst :,\:,$$($(1)_download_path))
+
+
+#default commands
+$(1)_fetch_cmds ?= $(call fetch_file,$(1),$(subst \:,:,$$($(1)_download_path_fixed)/$$($(1)_download_file)),$($(1)_file_name),$($(1)_sha256_hash))
+$(1)_extract_cmds ?= echo "$$($(1)_sha256_hash)  $$($(1)_source)" | $(build_SHA256SUM) -c && tar --strip-components=1 -xf $$($(1)_source)
+$(1)_preprocess_cmds ?=
+$(1)_build_cmds ?=
+$(1)_config_cmds ?=
+$(1)_stage_cmds ?=
+$(1)_set_vars ?=
+
+
+all_sources+=$$($(1)_fetched)
+endef
+#$(foreach dep_target,$($(1)_all_dependencies),$(eval $(1)_dependency_targets=$($(dep_target)_cached)))
+
+
+define int_config_attach_build_config
+$(eval $(call $(1)_set_vars,$(1)))
+$(1)_cflags+=$($(1)_cflags_$(host_arch))
+$(1)_cflags+=$($(1)_cflags_$(host_os))
+$(1)_cflags+=$($(1)_cflags_$(host_arch)_$(host_os))
+
+$(1)_cxxflags+=$($(1)_cxxflags_$(host_arch))
+$(1)_cxxflags+=$($(1)_cxxflags_$(host_os))
+$(1)_cxxflags+=$($(1)_cxxflags_$(host_arch)_$(host_os))
+
+$(1)_cppflags+=$($(1)_cppflags_$(host_arch))
+$(1)_cppflags+=$($(1)_cppflags_$(host_os))
+$(1)_cppflags+=$($(1)_cppflags_$(host_arch)_$(host_os))
+
+$(1)_ldflags+=$($(1)_ldflags_$(host_arch))
+$(1)_ldflags+=$($(1)_ldflags_$(host_os))
+$(1)_ldflags+=$($(1)_ldflags_$(host_arch)_$(host_os))
+
+$(1)_build_opts+=$$($(1)_build_opts_$(host_arch))
+$(1)_build_opts+=$$($(1)_build_opts_$(host_os))
+$(1)_build_opts+=$$($(1)_build_opts_$(host_arch)_$(host_os))
+
+$(1)_config_opts+=$$($(1)_config_opts_$(host_arch))
+$(1)_config_opts+=$$($(1)_config_opts_$(host_os))
+$(1)_config_opts+=$$($(1)_config_opts_$(host_arch)_$(host_os))
+
+$(1)_config_env+=$($(1)_config_env_$(host_arch))
+$(1)_config_env+=$($(1)_config_env_$(host_os))
+$(1)_config_env+=$($(1)_config_env_$(host_arch)_$(host_os))
+
+$(1)_config_env+=PKG_CONFIG_LIBDIR=$($($(1)_type)_prefix)/lib/pkgconfig
+$(1)_config_env+=PKG_CONFIG_PATH=$($($(1)_type)_prefix)/share/pkgconfig
+$(1)_config_env+=PATH=$(build_prefix)/bin:$(PATH)
+$(1)_build_env+=PATH=$(build_prefix)/bin:$(PATH)
+$(1)_stage_env+=PATH=$(build_prefix)/bin:$(PATH)
+$(1)_autoconf=./configure --host=$($($(1)_type)_host) --disable-dependency-tracking --prefix=$($($(1)_type)_prefix) $$($(1)_config_opts) CC="$$($(1)_cc)" CXX="$$($(1)_cxx)"
+
+ifneq ($($(1)_nm),)
+$(1)_autoconf += NM="$$($(1)_nm)"
+endif
+ifneq ($($(1)_ranlib),)
+$(1)_autoconf += RANLIB="$$($(1)_ranlib)"
+endif
+ifneq ($($(1)_ar),)
+$(1)_autoconf += AR="$$($(1)_ar)"
+endif
+ifneq ($($(1)_cflags),)
+$(1)_autoconf += CFLAGS="$$($(1)_cflags)"
+endif
+ifneq ($($(1)_cxxflags),)
+$(1)_autoconf += CXXFLAGS="$$($(1)_cxxflags)"
+endif
+ifneq ($($(1)_cppflags),)
+$(1)_autoconf += CPPFLAGS="$$($(1)_cppflags)"
+endif
+ifneq ($($(1)_ldflags),)
+$(1)_autoconf += LDFLAGS="$$($(1)_ldflags)"
+endif
+endef
+
+define int_add_cmds
+$($(1)_fetched):
+	$(AT)echo Fetching $(1)...
+	$(AT)mkdir -p $$(@D) $(SOURCES_PATH)
+	$(AT)cd $$(@D); $(call $(1)_fetch_cmds,$(1))
+	$(AT)touch $$@
+$($(1)_extracted): | $($(1)_fetched)
+	$(AT)echo Extracting $(1)...
+	$(AT)mkdir -p $$(@D)
+	$(AT)cd $$(@D); $(call $(1)_extract_cmds,$(1))
+	$(AT)touch $$@
+$($(1)_preprocessed): | $($(1)_dependencies) $($(1)_extracted)
+	$(AT)echo Preprocessing $(1)...
+	$(AT)mkdir -p $$(@D) $($(1)_patch_dir)
+	$(AT)$(foreach patch,$($(1)_patches),cd $(PATCHES_PATH)/$(1); cp $(patch) $($(1)_patch_dir) ;)
+	$(AT)cd $$(@D); $(call $(1)_preprocess_cmds, $(1))
+	$(AT)touch $$@
+$($(1)_configured): | $($(1)_preprocessed)
+	$(AT)echo Configuring $(1)...
+	$(AT)rm -rf $(host_prefix); mkdir -p $(host_prefix)/lib; cd $(host_prefix); $(foreach package,$($(1)_all_dependencies), tar xf $($(package)_cached); )
+	$(AT)mkdir -p $$(@D)
+	$(AT)+cd $$(@D); $($(1)_config_env) $(call $(1)_config_cmds, $(1))
+	$(AT)touch $$@
+$($(1)_built): | $($(1)_configured)
+	$(AT)echo Building $(1)...
+	$(AT)mkdir -p $$(@D)
+	$(AT)+cd $$(@D); $($(1)_build_env) $(call $(1)_build_cmds, $(1))
+	$(AT)touch $$@
+$($(1)_staged): | $($(1)_built)
+	$(AT)echo Staging $(1)...
+	$(AT)mkdir -p $($(1)_staging_dir)/$(host_prefix)
+	$(AT)cd $($(1)_build_dir); $($(1)_stage_env) $(call $(1)_stage_cmds, $(1))
+	$(AT)rm -rf $($(1)_extract_dir)
+	$(AT)touch $$@
+$($(1)_postprocessed): | $($(1)_staged)
+	$(AT)echo Postprocessing $(1)...
+	$(AT)cd $($(1)_staging_prefix_dir); $(call $(1)_postprocess_cmds)
+	$(AT)touch $$@
+$($(1)_cached): | $($(1)_dependencies) $($(1)_postprocessed)
+	$(AT)echo Caching $(1)...
+	$(AT)cd $$($(1)_staging_dir)/$(host_prefix); find . | sort | tar --no-recursion -czf $$($(1)_staging_dir)/$$(@F) -T -
+	$(AT)mkdir -p $$(@D)
+	$(AT)rm -rf $$(@D) && mkdir -p $$(@D)
+	$(AT)mv $$($(1)_staging_dir)/$$(@F) $$(@)
+	$(AT)rm -rf $($(1)_staging_dir)
+
+.PHONY: $(1)
+$(1): | $($(1)_cached)
+.SECONDARY: $($(1)_postprocessed) $($(1)_staged) $($(1)_built) $($(1)_configured) $($(1)_preprocessed) $($(1)_extracted) $($(1)_fetched)
+
+endef
+
+# These functions create the build targets for each package. They must be
+# broken down into small steps so that each part is done for all packages
+# before moving on to the next step. Otherwise, a package's info
+# (build-id for example) would only be avilable to another package if it
+# happened to be computed already.
+
+#set the type for host/build packages.
+$(foreach native_package,$(native_packages),$(eval $(native_package)_type=build))
+$(foreach package,$(packages),$(eval $(package)_type=$(host_arch)_$(host_os)))
+
+#set overridable defaults
+$(foreach package,$(all_packages),$(eval $(call int_vars,$(package))))
+
+#include package files
+$(foreach package,$(all_packages),$(eval include packages/$(package).mk))
+
+#compute a hash of all files that comprise this package's build recipe
+$(foreach package,$(all_packages),$(eval $(call int_get_build_recipe_hash,$(package))))
+
+#generate a unique id for this package, incorporating its dependencies as well
+$(foreach package,$(all_packages),$(eval $(call int_get_build_id,$(package))))
+
+#compute final vars after reading package vars
+$(foreach package,$(all_packages),$(eval $(call int_config_attach_build_config,$(package))))
+
+#create build targets
+$(foreach package,$(all_packages),$(eval $(call int_add_cmds,$(package))))
+
+#special exception: if a toolchain package exists, all non-native packages depend on it
+$(foreach package,$(packages),$(eval $($(package)_unpacked): |$($($(host_arch)_$(host_os)_native_toolchain)_cached) ))