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https://github.com/NixOS/nix.git
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80 lines
2.9 KiB
Makefile
80 lines
2.9 KiB
Makefile
programs-list :=
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# Build a program with symbolic name $(1). The program is defined by
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# various variables prefixed by '$(1)_':
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#
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# - $(1)_DIR: the directory where the (non-installed) program will be
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# placed.
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#
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# - $(1)_SOURCES: the source files of the program.
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#
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# - $(1)_CFLAGS: additional C compiler flags.
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#
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# - $(1)_CXXFLAGS: additional C++ compiler flags.
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#
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# - $(1)_ORDER_AFTER: a set of targets on which the object files of
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# this program will have an order-only dependency.
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#
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# - $(1)_LIBS: the symbolic names of libraries on which this program
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# depends.
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#
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# - $(1)_LDFLAGS: additional linker flags.
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#
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# - $(1)_INSTALL_DIR: the directory where the program will be
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# installed; defaults to $(bindir).
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define build-program
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_d := $(buildprefix)$$($(1)_DIR)
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_srcs := $$(sort $$(foreach src, $$($(1)_SOURCES), $$(src)))
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$(1)_OBJS := $$(addprefix $(buildprefix), $$(addsuffix .o, $$(basename $$(_srcs))))
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_libs := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_PATH))
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$(1)_PATH := $$(_d)/$(1)
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$$(eval $$(call create-dir, $$(_d)))
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$$($(1)_PATH): $$($(1)_OBJS) $$(_libs) | $$(_d)/
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$$(trace-ld) $(CXX) -o $$@ $$(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE))
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$(1)_INSTALL_DIR ?= $$(bindir)
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$(1)_INSTALL_PATH := $$($(1)_INSTALL_DIR)/$(1)
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$$(eval $$(call create-dir, $$($(1)_INSTALL_DIR)))
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install: $(DESTDIR)$$($(1)_INSTALL_PATH)
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ifeq ($(BUILD_SHARED_LIBS), 1)
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_libs_final := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_INSTALL_PATH))
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$(DESTDIR)$$($(1)_INSTALL_PATH): $$($(1)_OBJS) $$(_libs_final) | $(DESTDIR)$$($(1)_INSTALL_DIR)/
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$$(trace-ld) $(CXX) -o $$@ $$(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE_INSTALLED))
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else
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$(DESTDIR)$$($(1)_INSTALL_PATH): $$($(1)_PATH) | $(DESTDIR)$$($(1)_INSTALL_DIR)/
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install -t $$($(1)_INSTALL_DIR) $$<
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endif
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# Propagate CFLAGS and CXXFLAGS to the individual object files.
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$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CFLAGS=$$($(1)_CFLAGS)))
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$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CXXFLAGS=$$($(1)_CXXFLAGS)))
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# Make each object file depend on the common dependencies.
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$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj): $$($(1)_COMMON_DEPS) $$(GLOBAL_COMMON_DEPS)))
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# Make each object file have order-only dependencies on the common
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# order-only dependencies. This includes the order-only dependencies
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# of libraries we're depending on.
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$(1)_ORDER_AFTER_CLOSED = $$($(1)_ORDER_AFTER) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_ORDER_AFTER_CLOSED))
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$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj): | $$($(1)_ORDER_AFTER_CLOSED) $$(GLOBAL_ORDER_AFTER)))
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# Include .dep files, if they exist.
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$(1)_DEPS := $$(foreach fn, $$($(1)_OBJS), $$(call filename-to-dep, $$(fn)))
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-include $$($(1)_DEPS)
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programs-list += $$($(1)_PATH)
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clean-files += $$($(1)_PATH) $$(_d)/*.o $$(_d)/.*.dep $$($(1)_DEPS) $$($(1)_OBJS)
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dist-files += $$(_srcs)
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endef
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