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      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 :=
    150