generic-library/bionic
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity
f9fb52ab30
bionic/libc/crt.mk

138 lines
5.1 KiB
Makefile
Raw Normal View History

Reconfig libc's Android.mk to build for multilib 1. Moved arch-specific setup to their own files: - <arch>/<arch>.mk, arch-specific configs. Variables in those config end with the arch name. - removed the extra complexity introduced by function libc-add-cpu-variant-src, which seems to be not very useful these days. 2. Separated out the crt object files generation rules and set up the rules for both TARGET_ARCH and TARGET_2ND_ARCH. 3. Build all the libraries for both TARGET_ARCH and TARGET_2ND_ARCH, with the arch-specific LOCAL_ variables. Bug: 11654773 Change-Id: I9c2d85db0affa49199d182236d2210060a321421
2014-01-24 00:17:50 +01:00
# Define the libc run-time (crt) support object files that must be built,
# which are needed to build all other objects (shared/static libs and
# executables)
# ==========================================================================
# AArch64, ARM, MIPS, and x86 all need crtbegin_so/crtend_so.
#
# For x86, the .init section must point to a function that calls all
# entries in the .ctors section. (on ARM this is done through the
# .init_array section instead).
#
# For all the platforms, the .fini_array section must point to a function
# that will call __cxa_finalize(&__dso_handle) in order to ensure that
# static C++ destructors are properly called on dlclose().
#
# Args:
# my_2nd_arch_prefix: set to $(TARGET_2ND_ARCH_VAR_PREFIX) if it's
# for the 2nd arch; otherwise empty.
my_arch := $(TARGET_$(my_2nd_arch_prefix)ARCH)
my_libc_crt_target_crtbegin_file := $(libc_crt_target_crtbegin_file_$(my_arch))
my_libc_crt_target_crtbegin_so_file := $(libc_crt_target_crtbegin_so_file_$(my_arch))
my_libc_crt_target_cflags := \
$(libc_crt_target_cflags) \
$(libc_crt_target_cflags_$(my_arch))
my_libc_crt_target_so_cflags := \
$(libc_crt_target_so_cflags_$(my_arch)) \
$(my_libc_crt_target_cflags)
my_libc_crt_target_ldflags := $(libc_crt_target_ldflags_$(my_arch))
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.o
$(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
$(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
Remove no-op sed step when compiling crtbrand.o crtbrand.c was compiled to a .s file, run through a sed script to translate a %progbits to %note, and the compiled to .o. However, when the sed command was copied from the original source it was not updated to use the new name of the section (.note.ABI-tag to .note.android.ident), so it didn't modify the file. Since the section has been generated with type %progbits instead of %note for two years, just delete the whole sed step. Change-Id: Id78582e9b43b628afec4eed22a088283132f0742
2015-02-12 02:40:45 +01:00
$(GEN): $(LOCAL_PATH)/bionic/crtbrand.c
$(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
-MD -MF $(@:%.o=%.d) -o $@ -c $<
$(transform-d-to-p)
-include $(GEN:%.o=%.P)
Reconfig libc's Android.mk to build for multilib 1. Moved arch-specific setup to their own files: - <arch>/<arch>.mk, arch-specific configs. Variables in those config end with the arch name. - removed the extra complexity introduced by function libc-add-cpu-variant-src, which seems to be not very useful these days. 2. Separated out the crt object files generation rules and set up the rules for both TARGET_ARCH and TARGET_2ND_ARCH. 3. Build all the libraries for both TARGET_ARCH and TARGET_2ND_ARCH, with the arch-specific LOCAL_ variables. Bug: 11654773 Change-Id: I9c2d85db0affa49199d182236d2210060a321421
2014-01-24 00:17:50 +01:00
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
$(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
$(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
$(GEN): $(my_libc_crt_target_crtbegin_so_file)
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
-MD -MF $(@:%.o=%.d) -o $@ -c $<
$(transform-d-to-p)
-include $(GEN:%.o=%.P)
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
$(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
$(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_so_cflags)
$(GEN): $(LOCAL_PATH)/arch-common/bionic/crtend_so.S
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
-MD -MF $(@:%.o=%.d) -o $@ -c $<
$(transform-d-to-p)
-include $(GEN:%.o=%.P)
# The following two are installed to device
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_SHARED_LIBRARIES)/crtbegin_so.o
$(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_so.o
$(hide) mkdir -p $(dir $@) && cp -f $< $@
ALL_GENERATED_SOURCES += $(GEN)
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_SHARED_LIBRARIES)/crtend_so.o
$(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_so.o
$(hide) mkdir -p $(dir $@) && cp -f $< $@
ALL_GENERATED_SOURCES += $(GEN)
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static1.o
$(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
$(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_cflags)
$(GEN): $(my_libc_crt_target_crtbegin_file)
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
-MD -MF $(@:%.o=%.d) -o $@ -c $<
$(transform-d-to-p)
-include $(GEN:%.o=%.P)
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static.o
$(GEN): PRIVATE_LD := $($(my_2nd_arch_prefix)TARGET_LD)
$(GEN): PRIVATE_LDFLAGS := $(my_libc_crt_target_ldflags)
$(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_static1.o \
$($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.o
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_LD) $(PRIVATE_LDFLAGS) -r -o $@ $^
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic1.o
$(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
$(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_cflags)
$(GEN): $(my_libc_crt_target_crtbegin_file)
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
-MD -MF $(@:%.o=%.d) -o $@ -c $<
$(transform-d-to-p)
-include $(GEN:%.o=%.P)
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic.o
$(GEN): PRIVATE_LD := $($(my_2nd_arch_prefix)TARGET_LD)
$(GEN): PRIVATE_LDFLAGS := $(my_libc_crt_target_ldflags)
$(GEN): $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbegin_dynamic1.o \
$($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtbrand.o
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_LD) $(PRIVATE_LDFLAGS) -r -o $@ $^
# We rename crtend.o to crtend_android.o to avoid a
# name clash between gcc and bionic.
GEN := $($(my_2nd_arch_prefix)TARGET_OUT_INTERMEDIATE_LIBRARIES)/crtend_android.o
$(GEN): PRIVATE_CC := $($(my_2nd_arch_prefix)TARGET_CC)
$(GEN): PRIVATE_CFLAGS := $(my_libc_crt_target_cflags)
$(GEN): $(LOCAL_PATH)/arch-common/bionic/crtend.S
@mkdir -p $(dir $@)
$(hide) $(PRIVATE_CC) $(PRIVATE_CFLAGS) \
-MD -MF $(@:%.o=%.d) -o $@ -c $<
$(transform-d-to-p)
-include $(GEN:%.o=%.P)
# Clear temp vars
my_libc_crt_target_ldflags :=
my_libc_crt_target_so_cflags :=
my_libc_crt_target_cflags :=
my_libc_crt_target_crtbegin_so_file :=
my_libc_crt_target_crtbegin_file :=
my_arch :=
Reference in New Issue Copy Permalink