mirror of https://code.videolan.org/videolan/vlc
74 lines
3.1 KiB
Makefile
74 lines
3.1 KiB
Makefile
################################################################################
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# vlc (VideoLAN Client) dependencies makefile
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# (c)1998 VideoLAN
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################################################################################
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# This Makefile is dedicated to build of .d files. It should not be called
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# directly by user, but only through main Makefile.
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################################################################################
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###############################################################################
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# Note on generic rules and dependencies
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###############################################################################
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# Note on dependencies: each .c file is associated with a .d file, which
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# depends of it. The .o file associated with a .c file depends of the .d, of the
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# .c itself, and of Makefile. The .d files are stored in a separate .dep/
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# directory.
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# The dep directory should be ignored by CVS.
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# Note on inclusions: depending of the target, the dependencies files must
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# or must not be included. The problem is that if we ask make to include a file,
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# and this file does not exist, it is made before it can be included. In a
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# general way, a .d file should be included if and only if the corresponding .o
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# needs to be re-made.
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# The object Makefile knows how to make a .o from a .c, and includes
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# dependencies for the target, but only those required.
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# All settings and options are passed through main Makefile
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################################################################################
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# Default target
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################################################################################
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default:
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@echo "This Makefile should not be called directly,"
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@echo "see notes at end of main Makefile."
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################################################################################
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# Dependencies creation
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################################################################################
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# A dependencies file needs to be rebuilt if the .c changed or if one of the
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# dependencies files have been changed. In other words, it depends from the
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# .c and from itself.
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-include $(MAKECMDGOALS)
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CFLAGS += -DMAKE_DEP
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$(C_DEP): .dep/%.d: %.c
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@test -d .dep/$(dir $*) || mkdir -p $(shell dirname .dep/$*)
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@echo "make[$(MAKELEVEL)]: Generating dependencies for \`$*.c'"
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@$(SHELL) -ec '$(CC) -M $(CFLAGS) 2>/dev/null $< \
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| sed '\''s/$(subst .,\.,$(notdir $*))\.o[ :]*/$(subst /,\/,$*).o \
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.dep\/$(subst /,\/,$*).d : /g'\'' > $@; \
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[ -s $@ ] || rm -f $@'
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$(CPP_DEP): .dep/%.dpp: %.cpp
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@test -d .dep/$(dir $*) || mkdir -p $(shell dirname .dep/$*)
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@echo "make[$(MAKELEVEL)]: Generating dependencies for \`$*.cpp'"
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@$(SHELL) -ec '$(CC) -M $(CFLAGS) 2>/dev/null $< \
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| sed '\''s/$(subst .,\.,$(notdir $*))\.o[ :]*/$(subst /,\/,$*).o \
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.dep\/$(subst /,\/,$*).dpp : /g'\'' > $@; \
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[ -s $@ ] || rm -f $@'
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$(M_DEP): .dep/%.dm: %.m
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@test -d .dep/$(dir $*) || mkdir -p $(shell dirname .dep/$*)
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@echo "make[$(MAKELEVEL)]: Generating dependencies for \`$*.m'"
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@$(SHELL) -ec '$(CC) -M $(CFLAGS) 2>/dev/null $< \
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| sed '\''s/$(subst .,\.,$(notdir $*))\.o[ :]*/$(subst /,\/,$*).o \
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.dep\/$(subst /,\/,$*).dm : /g'\'' > $@; \
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[ -s $@ ] || rm -f $@'
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