libc/crt.mk

   1 # Define the libc run-time (crt) support object files that must be built,
   2 # which are needed to build all other objects (shared/static libs and
   3 # executables)
   4 # ==========================================================================
   5 # AArch64, ARM, MIPS, and x86 all need crtbegin_so/crtend_so.
   6 #
   7 # For x86, the .init section must point to a function that calls all
   8 # entries in the .ctors section. (on ARM this is done through the
   9 # .init_array section instead).
  10 #
  11 # For all the platforms, the .fini_array section must point to a function
  12 # that will call __cxa_finalize(&__dso_handle) in order to ensure that
  13 # static C++ destructors are properly called on dlclose().
  14 #
  15 # Args:
  16 #     my_2nd_arch_prefix: set to $(TARGET_2ND_ARCH_VAR_PREFIX) if it's
  17 #                         for the 2nd arch; otherwise empty.
  18
  19 my_arch := $(TARGET_$(my_2nd_arch_prefix)ARCH)
  20
  21 my_libc_crt_target_crtbegin_file := $(libc_crt_target_crtbegin_file_$(my_arch))
  22 my_libc_crt_target_crtbegin_so_file := $(libc_crt_target_crtbegin_so_file_$(my_arch))
  23
  24 my_libc_crt_target_cflags := \
  25     $(libc_crt_target_cflags) \
  26     $(libc_crt_target_cflags_$(my_arch))
  27
  28 my_libc_crt_target_so_cflags := \
  29     $(libc_crt_target_so_cflags_$(my_arch)) \
  30     $(my_libc_crt_target_cflags)
  31
  32 my_libc_crt_target_ldflags := $(libc_crt_target_ldflags_$(my_arch))
  33
  34
  35 # See the comment in crtbrand.c for the reason why we need to generate
  36 # crtbrand.s before generating crtbrand.o.
  37 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.s
  38 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
  39 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
  40 $(GEN): $(LOCAL_PATH)/bionic/crtbrand.c
  41         @mkdir -p $(dir $@)
  42         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) -S \
  43                 -MD -MF $(@:%.s=%.d) -o $@ $<
  44         $(hide) sed -i -e '/\.note\.ABI-tag/s/progbits/note/' $@
  45         $(call transform-d-to-p-args,$(@:%.s=%.d),$(@:%.s=%.P))
  46 -include $(GEN:%.s=%.P)
  47
  48
  49 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.o
  50 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
  51 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
  52 $(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.s
  53         @mkdir -p $(dir $@)
  54         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) -o $@ -c $<
  55
  56
  57 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
  58 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
  59 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
  60 $(GEN): $(my_libc_crt_target_crtbegin_so_file)
  61         @mkdir -p $(dir $@)
  62         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
  63                 -MD -MF $(@:%.o=%.d) -o $@ -c $<
  64         $(transform-d-to-p)
  65 -include $(GEN:%.o=%.P)
  66
  67
  68 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
  69 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
  70 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
  71 $(GEN): $(LOCAL_PATH)/arch-common/bionic/crtend_so.S
  72         @mkdir -p $(dir $@)
  73         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
  74                 -MD -MF $(@:%.o=%.d) -o $@ -c $<
  75         $(transform-d-to-p)
  76 -include $(GEN:%.o=%.P)
  77
  78
  79 # The following two are installed to device
  80 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_SHARED_LIBRARIES)/crtbegin_so.o
  81 $(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
  82         $(hide) mkdir -p $(dir $@) && cp -f $< $@
  83 ALL_GENERATED_SOURCES += $(GEN)
  84
  85 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_SHARED_LIBRARIES)/crtend_so.o
  86 $(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
  87         $(hide) mkdir -p $(dir $@) && cp -f $< $@
  88 ALL_GENERATED_SOURCES += $(GEN)
  89
  90
  91 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static1.o
  92 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
  93 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_cflags)
  94 $(GEN): $(my_libc_crt_target_crtbegin_file)
  95         @mkdir -p $(dir $@)
  96         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
  97                 -MD -MF $(@:%.o=%.d) -o $@ -c $<
  98         $(transform-d-to-p)
  99 -include $(GEN:%.o=%.P)
 100
 101
 102 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
 103 $(GEN): PRIVATE_LD := $($(my_2nd_arch_prefix)TARGET_LD)
 104 $(GEN): PRIVATE_LDFLAGS := $(my_libc_crt_target_ldflags)
 105 $(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static1.o \
 106     $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.o
 107         @mkdir -p $(dir $@)
 108         $(hide) $(PRIVATE_LD) $(PRIVATE_LDFLAGS) -r -o $@ $^
 109
 110
 111 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic1.o
 112 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
 113 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_cflags)
 114 $(GEN): $(my_libc_crt_target_crtbegin_file)
 115         @mkdir -p $(dir $@)
 116         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
 117                 -MD -MF $(@:%.o=%.d) -o $@ -c $<
 118         $(transform-d-to-p)
 119 -include $(GEN:%.o=%.P)
 120
 121
 122 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
 123 $(GEN): PRIVATE_LD := $($(my_2nd_arch_prefix)TARGET_LD)
 124 $(GEN): PRIVATE_LDFLAGS := $(my_libc_crt_target_ldflags)
 125 $(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic1.o \
 126     $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.o
 127         @mkdir -p $(dir $@)
 128         $(hide) $(PRIVATE_LD) $(PRIVATE_LDFLAGS) -r -o $@ $^
 129
 130
 131 # We rename crtend.o to crtend_android.o to avoid a
 132 # name clash between gcc and bionic.
 133 GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
 134 $(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
 135 $(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_cflags)
 136 $(GEN): $(LOCAL_PATH)/arch-common/bionic/crtend.S
 137         @mkdir -p $(dir $@)
 138         $(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
 139                 -MD -MF $(@:%.o=%.d) -o $@ -c $<
 140         $(transform-d-to-p)
 141 -include $(GEN:%.o=%.P)
 142
 143 # Clear temp vars
 144 my_libc_crt_target_ldflags :=
 145 my_libc_crt_target_so_cflags :=
 146 my_libc_crt_target_cflags :=
 147 my_libc_crt_target_crtbegin_so_file :=
 148 my_libc_crt_target_crtbegin_file :=
 149 my_arch :=