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lix/mk/programs.mk

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programs-list :=
# Build a program with symbolic name $(1). The program is defined by
# various variables prefixed by $(1)_:
#
# - $(1)_NAME: the name of the program (e.g. foo); defaults to
# $(1).
#
# - $(1)_DIR: the directory where the (non-installed) program will be
# placed.
#
# - $(1)_SOURCES: the source files of the program.
#
# - $(1)_CFLAGS: additional C compiler flags.
#
# - $(1)_CXXFLAGS: additional C++ compiler flags.
#
# - $(1)_ORDER_AFTER: a set of targets on which the object files of
# this program will have an order-only dependency.
#
# - $(1)_LIBS: the symbolic names of libraries on which this program
# depends.
#
# - $(1)_LDFLAGS: additional linker flags.
#
# - $(1)_INSTALL_DIR: the directory where the program will be
# installed; defaults to $(bindir).
define build-program
$(1)_NAME ?= $(1)
_d := $(buildprefix)$$($(1)_DIR)
_srcs := $$(sort $$(foreach src, $$($(1)_SOURCES), $$(src)))
$(1)_OBJS := $$(addprefix $(buildprefix), $$(addsuffix .o, $$(basename $$(_srcs))))
_libs := $$(foreach lib, $$($(1)_LIBS), $$(foreach lib2, $$($$(lib)_LIB_CLOSURE), $$($$(lib2)_PATH)))
$(1)_PATH := $$(_d)/$$($(1)_NAME)
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$$(eval $$(call create-dir, $$(_d)))
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$$($(1)_PATH): $$($(1)_OBJS) $$(_libs) | $$(_d)/
+$$(trace-ld) $(CXX) -o $$@ $$(LDFLAGS) $$(GLOBAL_LDFLAGS) $$($(1)_OBJS) $$($(1)_LDFLAGS) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_LDFLAGS_USE))
$(1)_INSTALL_DIR ?= $$(bindir)
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ifdef $(1)_INSTALL_DIR
$(1)_INSTALL_PATH := $$($(1)_INSTALL_DIR)/$$($(1)_NAME)
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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)
_libs_final := $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_INSTALL_PATH))
$(DESTDIR)$$($(1)_INSTALL_PATH): $$($(1)_OBJS) $$(_libs_final) | $(DESTDIR)$$($(1)_INSTALL_DIR)/
+$$(trace-ld) $(CXX) -o $$@ $$(LDFLAGS) $$(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)$$($(1)_INSTALL_DIR)/
+$$(trace-install) install -t $(DESTDIR)$$($(1)_INSTALL_DIR) $$<
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endif
endif
# Propagate CFLAGS and CXXFLAGS to the individual object files.
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CFLAGS=$$($(1)_CFLAGS)))
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj)_CXXFLAGS=$$($(1)_CXXFLAGS)))
# Make each object file depend on the common dependencies.
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj): $$($(1)_COMMON_DEPS) $$(GLOBAL_COMMON_DEPS)))
# Make each object file have order-only dependencies on the common
# order-only dependencies. This includes the order-only dependencies
# of libraries we're depending on.
$(1)_ORDER_AFTER_CLOSED = $$($(1)_ORDER_AFTER) $$(foreach lib, $$($(1)_LIBS), $$($$(lib)_ORDER_AFTER_CLOSED))
$$(foreach obj, $$($(1)_OBJS), $$(eval $$(obj): | $$($(1)_ORDER_AFTER_CLOSED) $$(GLOBAL_ORDER_AFTER)))
# Include .dep files, if they exist.
$(1)_DEPS := $$(foreach fn, $$($(1)_OBJS), $$(call filename-to-dep, $$(fn)))
-include $$($(1)_DEPS)
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programs-list += $$($(1)_PATH)
clean-files += $$($(1)_PATH) $$(_d)/*.o $$(_d)/.*.dep $$($(1)_DEPS) $$($(1)_OBJS)
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# Phony target to run this program (typically as a dependency of 'check').
.PHONY: $(1)_RUN
$(1)_RUN: $$($(1)_PATH)
$(trace-test) $$($(1)_PATH)
endef