# -*-makefile-*- <-- an Emacs control # The including make file must define these make variables: # # SHARED_LIBS_TO_BUILD: List of the shared libraries that need to be # built -- just the basic library names. E.g. "libfoo libbar" # # SHARED_LIBS_TO_INSTALL: List of the shared libraries that need to be # installed -- just the basic library names. E.g. "libfoo libbar" # # SHLIB_SUFFIX: Shared library filename suffix, e.g. "so". # # MAJ: Library major version number, e.g. "3" in file name "libfoo.3.1" # # MIN: Library minor version number, e.g. "1" in file name "libfoo.3.1" # # LDFLAGS_SHLIB: linker (Ld) flags needed to link object files together into # a shared library. May use $(SONAME) for the soname of the library. # Include -lc if appropriate. # # LADD: Additional linker flags (normally set on the make command line). # # INSTALL_DATA: beginning of shell command to install a library file. # # DESTDIR: main installation directory # # LIBINST_DIR: directory in which to install libraries, relative to DESTDIR. # # LN_S: beginning of shell command to make symbolic link (e.g. "ln -s"). # # CXXLD: beginning of shell command to link, e.g. "g++". # This make file defines these make variables that the including make file # can use: # # SHLIB_CMD: a command to build a shared library for C linkage # You can use this in a rule to build a shared library # SHLIBPP_CMD: Same, but for C++ linkage # Including make file must contain a rule to build each library file # (e.g. libfoo.3.1) # This make file provides these rules: # # install-shared-libraries: install all shared libraries and the necessary # symbolic links. # SONAME is to be referenced by $(LDFLAGS_SHLIB) in $(SHLIB_RULE) # SONAME is the name of the library file being built, with the minor # version number cut off. E.g. if we're building libfoo.so.1.2, SONAME # is libfoo.so.1 . SONAME = $(@:%.$(MIN)=%) SHLIB_CMD = $(CCLD) $(LDFLAGS_SHLIB) -o $@ $^ $(LADD) SHLIB_LE_TARGETS = $(call shliblefn, $(SHARED_LIBS_TO_BUILD)) $(SHLIB_LE_TARGETS):%:%.$(MAJ).$(MIN) rm -f $@ $(LN_S) $< $@ .PHONY: $(SHLIB_INSTALL_TARGETS) .PHONY: install-shared-libraries SHLIB_INSTALL_TARGETS = $(SHARED_LIBS_TO_INSTALL:%=%/install) #SHLIB_INSTALL_TARGETS is like "libfoo/install libbar/install" install-shared-libraries: $(SHLIB_INSTALL_TARGETS) $(SHLIB_INSTALL_TARGETS):%/install:%.$(SHLIB_SUFFIX).$(MAJ).$(MIN) # $< is a library file name, e.g. libfoo.so.3.1 . $(INSTALL_SHLIB) $< $(DESTDIR)$(LIBINST_DIR)/$< cd $(DESTDIR)$(LIBINST_DIR); \ rm -f $(<:%.$(MIN)=%); \ $(LN_S) $< $(<:%.$(MIN)=%) cd $(DESTDIR)$(LIBINST_DIR); \ rm -f $(<:%.$(MAJ).$(MIN)=%); \ $(LN_S) $(<:%.$(MIN)=%) $(<:%.$(MAJ).$(MIN)=%)