85 lines
2.5 KiB
Makefile
85 lines
2.5 KiB
Makefile
#
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# OS/161 build environment: build a library
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#
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# Usage:
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# TOP=../..
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# .include "$(TOP)/mk/os161.config.mk"
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# [defs go here]
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# .include "$(TOP)/mk/os161.lib.mk"
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# [any extra rules go here]
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#
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# Variables controlling this file:
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#
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# LIB Name of library. We create lib$(LIB).a.
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# SRCS .c and .S files to compile.
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#
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# CFLAGS Compile flags.
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#
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# LIBDIR Directory under $(OSTREE) to install into,
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# e.g. /lib. Should have a leading slash.
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#
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# Note that individual program makefiles should only *append* to
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# CFLAGS, not assign it. Otherwise stuff set by os161.config.mk will
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# get lost and bad things will happen.
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#
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# Because we only build static libs, we can't use and don't need
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# LDFLAGS, LIBS, or LIBDEPS. (Shared libs would want these.)
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#
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LIBDIR?=/lib
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_LIB_=lib$(LIB).a
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# We may want these directories created. (Used by os161.baserules.mk.)
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MKDIRS+=$(MYBUILDDIR)
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MKDIRS+=$(INSTALLTOP)$(LIBDIR)
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MKDIRS+=$(OSTREE)$(LIBDIR)
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# Default rule: create the program.
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# (In make the first rule found is the default.)
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all: all-local
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all-local: $(MYBUILDDIR) .WAIT $(MYBUILDDIR)/$(_LIB_)
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# Now get rules to compile the SRCS.
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.include "$(TOP)/mk/os161.compile.mk"
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# Further rules for libraries.
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#
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# Install: we can install into either $(INSTALLTOP) or $(OSTREE).
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# When building the whole system, we always install into the staging
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# area. We provide the same direct install that os161.prog.mk
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# provides; however, because it this doesn't relink anything using the
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# library it generally isn't a very useful thing to do. Hence the
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# warning.
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#
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# Note that we make a hard link instead of a copy by default to reduce
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# overhead.
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#
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install-staging-local: $(INSTALLTOP)$(LIBDIR) .WAIT $(INSTALLTOP)$(LIBDIR)/$(_LIB_)
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$(INSTALLTOP)$(LIBDIR)/$(_LIB_): $(MYBUILDDIR)/$(_LIB_)
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rm -f $(.TARGET)
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ln $(MYBUILDDIR)/$(_LIB_) $(.TARGET) || \
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cp $(MYBUILDDIR)/$(_LIB_) $(.TARGET)
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install-local: $(OSTREE)$(LIBDIR) $(MYBUILDDIR)/$(_LIB_)
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@echo "Warning: manually installing library without relinking anything"
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rm -f $(OSTREE)$(LIBDIR)/$(_LIB_)
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ln $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_) || \
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cp $(MYBUILDDIR)/$(_LIB_) $(OSTREE)$(LIBDIR)/$(_LIB_)
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# Build the library.
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$(MYBUILDDIR)/$(_LIB_): $(OBJS)
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rm -f $(.TARGET)
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$(AR) -cq $(.TARGET) $(OBJS)
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$(RANLIB) $(.TARGET)
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# Mark targets that don't represent files PHONY, to prevent various
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# lossage if files by those names appear.
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.PHONY: all all-local install-staging-local install-local
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# Finally, get the shared definitions for the most basic rules.
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.include "$(TOP)/mk/os161.baserules.mk"
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# End.
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