kernel/fiasco/src/Makefile.sub1

   1 # -*- makefile -*-
   2
   3 # Targets in this Makefile:
   4 # - all: Create C++ sources from Preprocess input
   5 #
   6 # This Makefile is invoked in a sub-Make from the top-level Makefile
   7 # (via Makerules.global) when globalconfig.out, Modules and
   8 # .Modules.deps are up-to-date.
   9
  10 all: do-all
  11
  12 BUILD_SOURCES=true
  13
  14 include $(srcdir)/Makeconf      # also reads srcdir/Makeconf.local
  15                                 # and        objdir/Makeconf.local
  16 include $(MODULES_FILE)
  17 include .Modules.deps
  18
  19 include $(srcdir)/Makerules.global # also reads objdir/Makerules.local
  20
  21 # Read subsystem Makefile fragments.  We do not explicity use any
  22 # targets of these fragments in this Makefile, but this include allows
  23 # subsystem Makefile fragments to implicitly create more Makefile
  24 # fragments.
  25 include $(MAKERULES_SUBSYS)
  26
  27 ALL_STAMPS = $(foreach m, $(GENERATED_MODULES), auto/stamp-$(m).ready)
  28
  29 .PHONY: do-all
  30 do-all: $(ALL_STAMPS)
  31
  32 #
  33 # Auto-created source files
  34 #
  35
  36 .Clean-auto: $(MODULES_FILES) .Modules.deps globalconfig.out
  37         rm -f                                                                 \
  38         $(filter-out                                                          \
  39           $(addprefix auto/,                                                  \
  40             $(addsuffix .cc,                                                  \
  41               $(foreach mod, $(GENERATED_MODULES), $(call eval_impl,$(mod)))) \
  42             $(foreach mod, $(GENERATED_MODULES),                              \
  43                            $(mod).h $(mod)_i.h stamp-$(mod).ready)),          \
  44           $(wildcard auto/*))
  45         touch $@
  46
  47 define find_ld_emulation
  48         emulations=$$(LANG= $(LD) --help |                                \
  49                       grep -i "supported emulations:" |                   \
  50                       sed -e 's/.*supported emulations: //') ;            \
  51         unset found_it;                                                   \
  52         for e in $$emulations; do                                         \
  53           for c in $(2); do                                               \
  54             if [ "$$e" = "$$c" ]; then                                    \
  55               echo LD_EMULATION = $$e >> $(1);                            \
  56               found_it=1;                                                 \
  57               break;                                                      \
  58             fi;                                                           \
  59           done;                                                           \
  60         done;                                                             \
  61         if [ "$$found_it" != "1" ]; then                                  \
  62           echo "No known ld emulation found"; exit 1;                     \
  63         fi
  64 endef
  65
  66 # Force that rule to ensure that compiler changes caused by make command line
  67 # or system-wide compiler updates are noticed.
  68 # Do not use .PHONY, because preprocess would then be triggered everytime.
  69 .Compiler-config: force-the-rule
  70         @echo -n "Checking compiler config... "
  71         @echo "CC = $(CC)" > $@.new
  72         @echo "CXX = $(CXX)" >> $@.new
  73         @echo "CPPFLAGS = $(CPPFLAGS)" >> $@.new
  74         @echo "CFLAGS = $(CFLAGS)" >> $@.new
  75         @echo "CXXFLAGS = $(CXXFLAGS)" >> $@.new
  76         @echo "OPT_CFLAGS = $(OPT_CFLAGS)" >> $@.new
  77         @echo "OPT_CXXFLAGS = $(OPT_CXXFLAGS)" >> $@.new
  78         @echo "ASFLAGS = $(ASFLAGS)" >> $@.new
  79         @echo "CONFIG_XARCH = $(CONFIG_XARCH)" >> $@.new
  80 # If the compiler configuration has changed, remove all dependency
  81 # files -- they have just become useless.
  82         @$(MOVE_IF_CHANGE) $@.new $@                            \
  83           && { $(RM) .*.d */.*.d; echo "CHANGED.  Recompiling."; }      \
  84           || echo "unchanged."
  85
  86 .Host-config: force-the-rule
  87         @$(call find_ld_emulation,$@.new,$(LD_EMULATION_CHOICE))
  88         @$(MOVE_IF_CHANGE) $@.new $@ || true
  89
  90 force-the-rule: ;
  91
  92 $(ALL_STAMPS): $(MODULES_FILES) .Modules.deps globalconfig.out \
  93                .Clean-auto .Compiler-config .Host-config
  94
  95 # Basename of implementation files = Basename of first .cpp file
  96 impl_name = $(basename $(firstword $(subst -, ,\
  97               $(firstword $(filter %.cpp, $(notdir $(1)))))))
  98
  99 $(ALL_STAMPS): auto/stamp-%.ready:
 100         $(PREP_MESSAGE)
 101         @test -e auto || mkdir auto
 102         $(VERBOSE)$(PREPROCESS) \
 103            $(PREPROCESS_FLAGS) \
 104            $(if $(filter $(call impl_name,$^),$(ALWAYS_INLINE)),-i,) \
 105            -p auto/new_ \
 106           -e "$(PREPROCESS_PARTS)" -s \
 107           -h $* -c $(call impl_name,$^) $(filter %.cpp, $^)
 108         @for i in $*.h $(call impl_name,$^)_i.h \
 109             $(patsubst %.cpp, %.cc, $(filter %.cpp, $(notdir $^))); \
 110           do \
 111             $(MOVE_IF_CHANGE) auto/new_$$i auto/$$i || true; \
 112           done
 113         $(OK_MESSAGE)
 114         $(VERBOSE)touch $@
 115
 116 .PRECIOUS: auto/stamp-%.ready
 117 .PRECIOUS: %.cc %.h %_i.h
 118