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https://github.com/TigerVNC/tigervnc.git
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0bb538bf85
git-svn-id: svn://svn.code.sf.net/p/tigervnc/code/trunk@602 3789f03b-4d11-0410-bbf8-ca57d06f2519
77 rader
2.4 KiB
Makefile
77 rader
2.4 KiB
Makefile
#
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# C / C++ header dependency stuff
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#
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# Needs GNU make and vncmkdepend, a hacked version of makedepend
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.SUFFIXES: .d
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CMAKEDEPEND = vncmkdepend
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CXXMAKEDEPEND = vncmkdepend
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#
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# The recommended method of doing dependency analysis in the GNU make manual
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# turns out to be painfully slow. This method is similar but it's
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# substantially faster and retains the desirable property that the user doesn't
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# need to manually invoke a "make depend" step.
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#
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# As with the method described in the manual, we generate a separate dependency
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# (.d) file for each source file. The .d file records the header files that
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# each C or C++ source file includes. Any source file recorded in SRCS or
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# CXXSRCS will cause us to try and include the corresponding .d file and GNU
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# make then treats each .d file as a target to be remade.
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#
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# Unlike the manual's method, the rule we provide for making the .d file is
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# actually a fake. All it does is record in a temporary file that the .d file
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# needs to be remade. But as well as all the .d files, we also try to include
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# a file called "depend.phony". This file never exists, but it causes GNU make
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# to try and make the target "depend.phony". The rule for depend.phony then
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# looks at the temporary files generated by the .d rules and then invokes the
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# "omkdepend" program on all of the source files in one go.
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#
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#
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# We use simple assignment here to remove any of the depend.tmp files
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# at the time make parses this bit.
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#
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dummyvariable := $(shell $(RM) cdepend.tmp cxxdepend.tmp)
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#
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# Now the "fake" rules for generating .d files.
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#
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%.d: %.c
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@echo "$<" >> cdepend.tmp
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%.d: %.cxx
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@echo "$<" >> cxxdepend.tmp
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#
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# The depend.phony rule which actually runs omkdepend.
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#
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depend.phony:
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@if [ -f cdepend.tmp ]; then \
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echo $(CMAKEDEPEND) $(ALL_CPPFLAGS) `cat cdepend.tmp`; \
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$(CMAKEDEPEND) $(ALL_CPPFLAGS) `cat cdepend.tmp`; \
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rm -f cdepend.tmp; \
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fi; \
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if [ -f cxxdepend.tmp ]; then \
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echo $(CXXMAKEDEPEND) $(ALL_CPPFLAGS) `cat cxxdepend.tmp`; \
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$(CXXMAKEDEPEND) $(ALL_CPPFLAGS) `cat cxxdepend.tmp`; \
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rm -f cxxdepend.tmp; \
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fi
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#
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# Now include the .d files and the "depend.phony" file which never exists.
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# For some reason GNU make evaluates the targets in reverse order, so we need
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# to include depend.phony first. The "-" tells make not to complain that it
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# can't find the file.
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#
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-include depend.phony
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ifdef SRCS
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-include $(patsubst %.c,%.d,$(patsubst %.cxx,%.d,$(SRCS)))
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endif
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