Re:Makefile with out of source build Re: How to adding pathes to dependencies in rules of `.d` files

[ljh]

Update. I did not use addprefix in the link rule.

# Makefile for top dir

# $(call makever,1.2.3)
# major.minor.patch
# libtool manual: -version-number
define makever
        @ $(MAKE) -C $@ soname=lib$@.so.$(word 1,$(subst ., ,$(1)))

        @ cp $(OBJDIR)/$@/$@ $(OBJDIR)/$@/lib$@.so.$(1)

        @ cd $(OBJDIR)/$@; ln -f -s $(OBJDIR)/$@/lib$@.so.$(1) \
                $(OBJDIR)/$@/lib$@.so.$(word 1,$(subst ., ,$(1))); cd ..

        @ cd $(OBJDIR)/$@; ln -f -s $(OBJDIR)/$@/lib$@.so.$(1) \
                $(OBJDIR)/$@/lib$@.so; cd ..
endef

# make # BUILD_DIR=build
ifndef BUILD_DIR
export OBJDIR = $(abspath build)
else
export OBJDIR = $(abspath $(BUILD_DIR))
endif

SUBDIRS = main foo

all : $(SUBDIRS)
install : $(SUBDIRS)
$(SUBDIRS) : | $(OBJDIR)
$(OBJDIR) : ; @ mkdir $@

main : foo
main : ; @ $(MAKE) -C $@
foo : ; $(call makever,1.2.3)

# make DESTDIR=~/foo install
# Alexandre Duret-Lutz??s Autotools Tutorial (without animations):
# "is ready to be uncompressed in / on many hosts"
install :
        install -d "$(DESTDIR)/usr/local/bin"
        install -d "$(DESTDIR)/usr/local/lib"
        install -m 0755 $(OBJDIR)/main/main "$(DESTDIR)/usr/local/bin"
        install -m 0755 $(OBJDIR)/foo/*.so* "$(DESTDIR)/usr/local/lib"

clean :
        @ for dir in $(SUBDIRS); do \
                $(MAKE) -C $$dir $@; \
        done
        -rm -fr $(OBJDIR)

.PHONY : $(SUBDIRS) all install clean

---

# Makefile for subdir

# build shared library with -fPIC, -shared
CFLAGS    = # -g -O3 -fPIC # CXXFLAGS for .cpp
CPPFLAGS  = -MMD -MP -I../foo
LDFLAGS   = -L$(OBJDIR)/foo # -shared
LDLIBS    = -lfoo
#CC       = $(CXX) # link with CXX for .cpp

LDFLAGS  += -Wl,-rpath,$(OBJDIR)/foo
LDFLAGS  += -Wl,-rpath,'$$ORIGIN/../lib'
#LDFLAGS += -Wl,-soname,$(soname)

# make # NDEBUG=1
ifdef NDEBUG
CPPFLAGS += -DNDEBUG
CFLAGS   += -O3 # .cpp
else
CFLAGS   += -g # .cpp
LDFLAGS  += -fsanitize=address
endif

SUBDIR    = $(OBJDIR)/main

all : $(SUBDIR)/main # $(SUBDIR)/foo

$(SUBDIR)/main : $(addprefix $(SUBDIR)/,$(patsubst %.c,%.o,$(wildcard *.c))) # 
.cpp
        $(CC) $(LDFLAGS) $^ $(LDLIBS) -o $@

$(SUBDIR)/%.o : %.c | $(SUBDIR) # .cpp
        $(CC) $(CFLAGS) $(CPPFLAGS) -c -o $@ $<

$(SUBDIR) : ; @ mkdir $@

-include $(SUBDIR)/*.d
clean : ; -rm -fr $(SUBDIR)
.PHONY : all clean