extra-lib.mk

   1 # This file is included several times in a row, once
   2 # for each element of $(extra-libs).  $(extra-libs-left)
   3 # is initialized first to $(extra-libs) so that with each
   4 # inclusion, we advance $(lib) to the next library name (e.g. libfoo).
   5 # The variable $($(lib)-routines) defines the list of modules
   6 # to be included in that library.
   7
   8 lib := $(firstword $(extra-libs-left))
   9 extra-libs-left := $(filter-out $(lib),$(extra-libs-left))
  10
  11 object-suffixes-$(lib) := $(filter-out $($(lib)-inhibit-o),$(object-suffixes))
  12
  13 ifneq (,$(object-suffixes-$(lib)))
  14
  15 # Make sure these are simply-expanded variables before we append to them,
  16 # since we want the expressions we append to be expanded right now.
  17 install-lib := $(install-lib)
  18 extra-objs := $(extra-objs)
  19
  20 # Add each flavor of library to the lists of things to build and install.
  21 install-lib += $(foreach o,$(object-suffixes-$(lib)),$(lib:lib%=$(libtype$o)))
  22 extra-objs += $(foreach o,$(object-suffixes-$(lib)),\
  23                         $(patsubst %,%$o,$($(lib)-routines)))
  24 alltypes-$(lib) := $(foreach o,$(object-suffixes-$(lib)),\
  25                              $(objpfx)$(patsubst %,$(libtype$o),\
  26                              $(lib:lib%=%)))
  27
  28 ifeq (,$(filter $(lib),$(extra-libs-others)))
  29 lib-noranlib: $(alltypes-$(lib))
  30 ifeq (yes,$(build-shared))
  31 lib-noranlib: $(objpfx)$(lib).so$($(lib).so-version)
  32 endif
  33 else
  34 others: $(alltypes-$(lib))
  35 endif
  36
  37 # The linked shared library is never a dependent of lib-noranlib,
  38 # because linking it will depend on libc.so already being built.
  39 ifneq (,$(filter .os,$(object-suffixes-$(lib))))
  40 others: $(objpfx)$(lib).so$($(lib).so-version)
  41 endif
  42
  43
  44 # Use o-iterator.mk to generate a rule for each flavor of library.
  45 define o-iterator-doit
  46 $(objpfx)$(patsubst %,$(libtype$o),$(lib:lib%=%)): \
  47   $($(lib)-routines:%=$(objpfx)%$o); $$(build-extra-lib)
  48 endef
  49 object-suffixes-left = $(object-suffixes-$(lib))
  50 include $(patsubst %,$(..)o-iterator.mk,$(object-suffixes-$(lib)))
  51
  52 # Add the version script to the dependencies of the shared library.
  53 $(objpfx)$(lib).so: $($(lib)-map)
  54
  55 endif