90 lines
2.9 KiB
Makefile
90 lines
2.9 KiB
Makefile
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libs_list :=
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# Build a library with symbolic name $(1). The library is defined by
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# various variables prefixed by ‘$(1)_’:
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#
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# - $(1)_NAME: the name of the library (e.g. ‘libfoo’); defaults to
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# $(1).
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#
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# - $(1)_DIR: the directory containing the sources of the library, and
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# where the (non-installed) library will be placed.
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#
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# - $(1)_SOURCES: the source files of the library.
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#
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# - $(1)_LIBS: the symbolic names of other libraries on which this
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# library depends.
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#
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# - $(1)_ALLOW_UNDEFINED: if set, the library is allowed to have
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# undefined symbols. Has no effect for static libraries.
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#
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# - $(1)_LDFLAGS: additional linker flags.
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#
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# - $(1)_LDFLAGS_PROPAGATED: additional linker flags, also propagated
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# to the linking of programs/libraries that use this library.
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#
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# - BUILD_SHARED_LIBS: if equal to ‘1’, a dynamic library will be
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# built, otherwise a static library.
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#
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# - libdir: the directory where the library will be installed (if
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# required).
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define build-library =
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$(1)_NAME ?= $(1)
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_d := $$(strip $$($(1)_DIR))
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_srcs := $$(foreach src, $$($(1)_SOURCES), $$(_d)/$$(src))
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$(1)_OBJS := $$(addsuffix .o, $$(basename $$(_srcs)))
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_libs := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_PATH))
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$(1)_LDFLAGS_USE :=
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$(1)_LDFLAGS_USE_INSTALLED :=
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ifeq ($(BUILD_SHARED_LIBS), 1)
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ifndef $(1)_ALLOW_UNDEFINED
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$(1)_LDFLAGS += -z defs
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endif
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$(1)_PATH := $$(_d)/$$($(1)_NAME).so
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$$($(1)_PATH): $$($(1)_OBJS) $$(_libs)
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$(QUIET) $(CXX) -o $$@ -shared $(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$($(1)_LDFLAGS_PROPAGATED) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE))
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$(1)_LDFLAGS_USE += -L$$(_d) -Wl,-rpath,$$(abspath $$(_d)) -l$$(patsubst lib%,%,$$(strip $$($(1)_NAME)))
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$(1)_INSTALL_DIR := $$(libdir)
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$(1)_INSTALL_PATH := $$($(1)_INSTALL_DIR)/$$($(1)_NAME).so
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_libs_final := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_INSTALL_PATH))
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$$($(1)_INSTALL_PATH): $$($(1)_OBJS) $$(_libs_final)
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install -d $$($(1)_INSTALL_DIR)
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$(QUIET) $(CXX) -o $$@ -shared $(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$($(1)_LDFLAGS_PROPAGATED) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE_INSTALLED))
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$(1)_LDFLAGS_USE_INSTALLED += -L$$($(1)_INSTALL_DIR) -Wl,-rpath,$$($(1)_INSTALL_DIR) -l$$(patsubst lib%,%,$$(strip $$($(1)_NAME)))
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else
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$(1)_PATH := $$(_d)/$$($(1)_NAME).a
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$$($(1)_PATH): $$($(1)_OBJS)
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$(QUIET) ar crs $$@ $$?
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$(1)_LDFLAGS_USE += $$($(1)_PATH) $$($(1)_LDFLAGS)
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$(1)_INSTALL_PATH := $$(libdir)/$$($(1)_NAME).a
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endif
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$(1)_LDFLAGS_USE += $$($(1)_LDFLAGS_PROPAGATED)
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$(1)_LDFLAGS_USE_INSTALLED += $$($(1)_LDFLAGS_PROPAGATED)
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# Propagate CXXFLAGS to the individual object files.
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$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CXXFLAGS=$$($(1)_CXXFLAGS)))
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include $$(wildcard $$(_d)/*.dep)
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libs_list += $$($(1)_PATH)
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clean_files += $$(_d)/*.a $$(_d)/*.so $$(_d)/*.o $$(_d)/*.dep
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dist_files += $$(_srcs)
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endef
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