Ben Pfaff
53cceda7ad
We need object files to depend on the build directories, so that the build directories get created before we try to output files into them. But making them depend directly on the build directories means that whenever a build directory changes (including any change to the set of files inside it) all the source files get recompiled. So, instead, make them depend on dummy files inside the directories, which will only get modified if someone does it intentionally.
41 lines
867 B
Makefile
41 lines
867 B
Makefile
all_modules = $(dist_modules)
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dist_modules = openflow unit
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openflow_sources = \
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chain.c \
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crc32.c \
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datapath.c \
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datapath_t.c \
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dp_dev.c \
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flow.c \
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forward.c \
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table-hash.c \
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table-linear.c \
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unit-exports.c
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openflow_headers = \
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chain.h \
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compat.h \
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crc32.h \
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datapath.h \
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datapath_t.h \
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flow.h \
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forward.h \
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snap.h \
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table.h \
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unit.h
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unit_sources = \
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crc_t.c \
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forward_t.c \
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table_t.c \
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unit.c
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dist_sources = $(foreach module,$(dist_modules),$($(module)_sources))
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dist_headers = $(foreach module,$(dist_modules),$($(module)_headers))
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all_sources = $(foreach module,$(all_modules),$($(module)_sources))
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all_headers = $(foreach module,$(all_modules),$($(module)_headers))
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all_objects = $(patsubst %.c,%.o,$(all_sources))
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all_objdirs = $(addprefix $(builddir)/,$(sort $(dir $(all_objects))))
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all_dummies = $(addsuffix /.dummy,$(all_objdirs))
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