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5ae0dab6c5
This patch removes the implicit build of all shared libraries a target depends on. Targets only depend on the respective ABIs instead. This alleviates the need to locally build complex shared libraries (think of Qt) when developing applications. Instead, application developers can use binary depot archives. The implementation splits the mk/lib.mk file into three files: - mk/a.mk for building one static library (.lib.a) - mk/so.mk for building one shared object (.lib.so) - mk/abi.mk for building one ABI stub (.abi.so) Furthermore, the commit moves messages and the collection of build artifacts to var/libdeps, triggers the build of kernel-specific ld-<kernel>.lib.so, and prunes the lib-dependency tree at ABIs. Fixes #5061
116 lines
3.6 KiB
Makefile
116 lines
3.6 KiB
Makefile
#
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# Determine library dependencies of a program
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#
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ACCUMULATE_MISSING_PORTS = 1
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include $(BASE_DIR)/mk/util.inc
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all:
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@true
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#
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# Include target build instructions to aquire library dependecies
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#
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PRG_DIR := $(dir $(TARGET_MK))
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include $(TARGET_MK)
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#
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# Check if the requirements of the target are satisfied
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#
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UNSATISFIED_REQUIREMENTS = $(filter-out $(SPECS),$(REQUIRES))
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ifneq ($(UNSATISFIED_REQUIREMENTS),)
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WARNING_SKIP := "Skip library $(LIB) because it requires '$(UNSATISFIED_REQUIREMENTS)'"
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endif
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#
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# Add libgcov if coverage is requested
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#
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ifeq ($(COVERAGE),yes)
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LIBS += libgcov
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endif
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#
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# Add libraries for undefined behavior sanitizer if requested
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#
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ifeq ($(SANITIZE_UNDEFINED),yes)
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LIBS += libubsan libsanitizer_common
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endif
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#
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# Include lib-import description files
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#
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include $(foreach LIB,$(LIBS),$(call select_from_repositories,lib/import/import-$(LIB).mk))
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#
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# Add globally defined library supplements
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#
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include $(SPEC_FILES)
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#
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# Evaluate library dependencies for this target
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#
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include $(BASE_DIR)/mk/dep.inc
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DEP_A_VAR_NAME := DEP_A_$(TARGET).prg
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DEP_SO_VAR_NAME := DEP_SO_$(TARGET).prg
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#
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# Names of build artifacts to appear in the 'progress.log'
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#
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BUILD_ARTIFACTS ?= $(TARGET)
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#
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# Determine location of $(TARGET_MK) within 'src/', remove trailing slash
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#
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PRG_REL_DIR := $(subst $(REP_DIR)/src/,,$(PRG_DIR))
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PRG_REL_DIR := $(PRG_REL_DIR:/=)
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ifneq ($(UNSATISFIED_REQUIREMENTS),)
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WARNING_SKIP := "Skip target $(PRG_REL_DIR) because it requires '$(UNSATISFIED_REQUIREMENTS)'"
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endif
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all: $(if $(WARNING_SKIP),generate_skip,generate)
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generate_skip:
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@echo $(WARNING_SKIP)
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generate: $(call deps_for_libs,$(LIBS))
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@(echo "$(TARGET).prg: check_ports $(addsuffix .lib.a,$(LIBS)) $(addsuffix .abi.so,$(LIBS))"; \
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echo " \$$(VERBOSE)\$$(call _prepare_prg_step,$(PRG_REL_DIR)/$(TARGET),$(BUILD_ARTIFACTS))"; \
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echo " \$$(VERBOSE_MK)\$$(MAKE) $(VERBOSE_DIR) -C $(PRG_REL_DIR) -f \$$(BASE_DIR)/mk/prg.mk \\"; \
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echo " REP_DIR=$(REP_DIR) \\"; \
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echo " PRG_REL_DIR=$(PRG_REL_DIR) \\"; \
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echo " BUILD_BASE_DIR=$(BUILD_BASE_DIR) \\"; \
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echo " ARCHIVES=\"\$$(sort \$$(DEP_A_$(TARGET).prg))\" \\"; \
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echo " SHARED_LIBS=\"\$$(sort \$$(DEP_SO_$(TARGET).prg))\" \\"; \
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echo " SHELL=$(SHELL) \\"; \
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echo " INSTALL_DIR=\"\$$(INSTALL_DIR)\" \\"; \
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echo " DEBUG_DIR=\"\$$(DEBUG_DIR)\""; \
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echo "") >> $(LIB_DEP_FILE)
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#
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# Make 'all' depend on the target, which triggers the building of the target
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# and the traversal of the target's library dependencies. But we only do so
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# if the target does not depend on any library with unsatisfied build
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# requirements. In such a case, the target cannot be linked anyway.
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#
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@(echo "ifeq (\$$(filter \$$(DEP_A_$(TARGET).prg:.lib.a=) \$$(DEP_SO_$(TARGET).prg:.lib.so=) $(LIBS),\$$(INVALID_DEPS)),)"; \
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echo "all: $(TARGET).prg"; \
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echo "endif") >> $(LIB_DEP_FILE)
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#
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# Normally, if the target depends on a library, which cannot be built (such
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# libraries get recorded in the 'INVALID_DEPS' variable), we skip the target
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# altogether. In some cases, however, we want to build all non-invalid
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# libraries of a target regardless of whether the final target can be created
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# or not. (i.e., for implementing the mechanism for building all libraries,
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# see 'base/src/lib/target.mk'). This use case is supported via the
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# 'FORCE_BUILD_LIBS' variable. If the 'target.mk' file assigns the value
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# 'yes' to this variable, we build all non-invalid libraries regardless of
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# the validity of the final target.
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#
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ifeq ($(FORCE_BUILD_LIBS),yes)
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@(echo ""; \
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echo "all: \$$(addsuffix .lib,\$$(filter-out \$$(INVALID_DEPS), $(LIBS)))") >> $(LIB_DEP_FILE)
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endif
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