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72 lines
2.2 KiB
Makefile
72 lines
2.2 KiB
Makefile
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# We want the all target to be the implicit target (if no target is
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# given explicitly on the command line) so mention it first.
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all:
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# Sub-directory Makefile.local fragments can append to these variables
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# to have directory-specific cflags as necessary.
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extra_cflags :=
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extra_cxxflags :=
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# Get settings from the output of configure by running it to generate
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# Makefile.config if it doesn't exist yet.
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# If Makefile.config doesn't exist, then srcdir won't be
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# set. Conditionally set it (assuming a plain srcdir build) so that
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# the rule to generate Makefile.config can actually work.
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srcdir ?= .
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include Makefile.config
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# We make all targets depend on the Makefiles themselves.
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global_deps = Makefile Makefile.config Makefile.local \
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$(subdirs:%=%/Makefile) $(subdirs:%=%/Makefile.local)
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INCLUDE_MORE := yes
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ifneq ($(filter clean distclean dataclean, $(word 1, $(MAKECMDGOALS))),)
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CLEAN_GOAL := $(word 1, $(MAKECMDGOALS))
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# If there are more goals following CLEAN_GOAL, run $(MAKE)s in parts.
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ifneq ($(word 2, $(MAKECMDGOALS)),)
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INCLUDE_MORE := no
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FOLLOWING_GOALS := $(wordlist 2, 99, $(MAKECMDGOALS))
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.PHONY: $(FOLLOWING_GOALS) make_in_parts
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$(FOLLOWING_GOALS):
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@true
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$(CLEAN_GOAL): make_in_parts
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make_in_parts:
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$(MAKE) $(CLEAN_GOAL)
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$(MAKE) $(FOLLOWING_GOALS) configure_options="$(configure_options)"
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endif
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else
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CLEAN_GOAL :=
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endif
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# Potentially speedup make clean, distclean and dataclean ; avoid
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# re-creating Makefile.config if it exists but configure is newer.
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ifneq ($(CLEAN_GOAL),)
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Makefile.config: | $(srcdir)/configure
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else
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Makefile.config: $(srcdir)/configure
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endif
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ifeq ($(configure_options),)
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@echo ""
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@echo "Note: Calling ./configure with no command-line arguments. This is often fine,"
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@echo " but if you want to specify any arguments (such as an alternate prefix"
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@echo " into which to install), call ./configure explicitly and then make again."
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@echo " See \"./configure --help\" for more details."
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@echo ""
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endif
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$(srcdir)/configure $(configure_options)
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ifeq ($(INCLUDE_MORE),yes)
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# runtime variable definitions available in all subdirs
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include $(srcdir)/Makefile.global
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# Finally, include all of the Makefile.local fragments where all the
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# real work is done.
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include $(subdirs:%=%/Makefile.local) Makefile.local
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endif
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