I compiled android-n with gcc, when build bionic/libc/ with the
prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9/, the compile errors
list as following:
mmma bionic/libc/ -B
FAILED: /bin/bash -c "(PWD=/proc/self/cwd
prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-4.9/bin/arm-linux-androideabi-g++
-I bionic/libc -I bionic/libc/malloc_debug -I
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates
-I
out/target/product/etau-V2000AN/gen/SHARED_LIBRARIES/libc_malloc_debug_intermediates
-I libnativehelper/include/nativehelper \$(cat
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/import_includes)
-isystem system/core/include -isystem system/media/audio/include -isystem
hardware/libhardware/include -isystem hardware/libhardware_legacy/include
-isystem hardware/ril/include -isystem libnativehelper/include -isystem
frameworks/native/include -isystem frameworks/native/opengl/include
-isystem frameworks/av/include -isystem frameworks/base/include -isystem
out/target/product/etau-V2000AN/obj/include -isystem
bionic/libc/arch-arm/include -isystem bionic/libc/include -isystem
bionic/libc/kernel/uapi -isystem bionic/libc/kernel/common -isystem
bionic/libc/kernel/uapi/asm-arm -isystem bionic/libm/include -isystem
bionic/libm/include/arm -c -fno-exceptions -Wno-multichar -msoft-float
-ffunction-sections -fdata-sections -funwind-tables
-fstack-protector-strong -Wa,--noexecstack -Werror=format-security
-D_FORTIFY_SOURCE=2 -fno-short-enums -no-canonical-prefixes
-fno-canonical-system-headers -mcpu=cortex-a7 -D__ARM_FEATURE_LPAE=1
-mfloat-abi=softfp -mfpu=neon -fno-builtin-sin
-fno-strict-volatile-bitfields -Wno-psabi -mthumb-interwork -DANDROID
-fmessage-length=0 -W -Wall -Wno-unused -Winit-self -Wpointer-arith
-fdiagnostics-color -fdebug-prefix-map=/proc/self/cwd= -Werror=return-type
-Werror=non-virtual-dtor -Werror=address -Werror=sequence-point -DNDEBUG
-g -Wstrict-aliasing=2 -fgcse-after-reload -frerun-cse-after-loop
-frename-registers -DNDEBUG -UDEBUG -fvisibility-inlines-hidden
-Wsign-promo -mthumb -Os -fomit-frame-pointer -fno-strict-aliasing
-fno-rtti -Wall -Werror -fno-stack-protector -Wno-error=format-zero-length
-fPIC -D_USING_LIBCXX -std=gnu++11 -MD -MF
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.d
-o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.o
bionic/libc/malloc_debug/malloc_debug.cpp ) && (cp
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.d
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.P;
sed -e 's/#.*//' -e 's/^[^:]*: *//' -e 's/ *\\\\\$//' -e '/^\$/ d' -e
's/\$/ :/' <
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.d
>>
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.P;
rm -f
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_malloc_debug_intermediates/malloc_debug.d
)"
bionic/libc/malloc_debug/malloc_debug.cpp: In function 'void*
debug_calloc(size_t, size_t)':
bionic/libc/malloc_debug/malloc_debug.cpp:546:49: error:
'__builtin_mul_overflow' was not declared in this scope
if (__builtin_mul_overflow(nmemb, bytes, &size)) {
^
bionic/libc/malloc_debug/malloc_debug.cpp:557:70: error:
'__builtin_add_overflow' was not declared in this scope
if (__builtin_add_overflow(size, g_debug->extra_bytes(), &real_size)) {
^
bionic/libc/malloc_debug/malloc_debug.cpp: In function 'int
debug_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t, void*),
void*)':
bionic/libc/malloc_debug/malloc_debug.cpp:606:24: error: declaration of
'void (* debug_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t,
void*), void*)::iterate_ctx::callback)(uintptr_t, size_t, void*)'
[-fpermissive]
decltype(callback) callback;
^
bionic/libc/malloc_debug/malloc_debug.cpp:602:60: error: changes meaning of
'callback' from 'void (* callback)(uintptr_t, size_t, void*)' [-fpermissive]
void (*callback)(uintptr_t base, size_t size, void* arg), void* arg) {
^
bionic/libc/malloc_debug/malloc_debug.cpp:607:19: error: declaration of
'void* debug_iterate(uintptr_t, size_t, void (*)(uintptr_t, size_t, void*),
void*)::iterate_ctx::arg' [-fpermissive]
decltype(arg) arg;
^
bionic/libc/malloc_debug/malloc_debug.cpp:602:69: error: changes meaning of
'arg' from 'void* arg' [-fpermissive]
void (*callback)(uintptr_t base, size_t size, void* arg), void* arg) {
^
ninja: build stopped: subcommand failed.
make: *** [ninja_wrapper] Error 1
Because __builtin_add_overflow is the new gcc feature after 5.0
So I download a gcc 6.1 from Linaro
(https://android-git.linaro.org/gitweb/platform/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1-linaro.git),
other issues happened:
FAILED: /bin/bash -c
"prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/arm-linux-androideabi-g++
-nostdlib -Wl,-soname,libc.so -Wl,--gc-sections -Wl,-shared
-Lout/target/product/etau-V2000AN/obj/lib
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/arch-common/bionic/crtbrand.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/arch-common/bionic/crtend_so.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/bionic/malloc_common.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/bionic/libc_init_dynamic.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/bionic/NetdClient.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/arch-common/bionic/crtbegin_so.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/arch-arm/bionic/exidx_dynamic.o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/arch-arm/bionic/atexit_legacy.o
-Wl,--whole-archive
out/target/product/etau-V2000AN/obj/STATIC_LIBRARIES/libc_common_intermediates/libc_common.a
out/target/product/etau-V2000AN/obj/STATIC_LIBRARIES/libjemalloc_intermediates/libjemalloc.a
-Wl,--no-whole-archive
out/target/product/etau-V2000AN/obj/STATIC_LIBRARIES/libcompiler_rt-extras_intermediates/libcompiler_rt-extras.a
prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/../lib/gcc/arm-linux-androideabi/6.1.1/../../../../arm-linux-androideabi/lib/libatomic.a
prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/../lib/gcc/arm-linux-androideabi/6.1.1/libgcc.a
-ldl -o
out/target/product/etau-V2000AN/obj/SHARED_LIBRARIES/libc_intermediates/LINKED/libc.so
-Wl,-z,noexecstack -Wl,-z,relro -Wl,-z,now -Wl,--build-id=md5
-Wl,--warn-shared-textrel -Wl,--fatal-warnings -Wl,--icf=safe
-Wl,--hash-style=gnu -Wl,--no-undefined-version -Wl,--no-fix-cortex-a8
-Wl,--hash-style=both -Wl,--version-script,bionic/libc/libc.arm.map
-Wl,--no-undefined"
/home/user/rda-n/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/../lib/gcc/arm-linux-androideabi/6.1.1/../../../../arm-linux-androideabi/bin/ld:
error: version script assignment of LIBC_PRIVATE to symbol __divdi3 failed:
symbol not defined
/home/user/rda-n/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/../lib/gcc/arm-linux-androideabi/6.1.1/../../../../arm-linux-androideabi/bin/ld:
error: version script assignment of LIBC_PRIVATE to symbol
__gnu_ldivmod_helper failed: symbol not defined
/home/user/rda-n/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/../lib/gcc/arm-linux-androideabi/6.1.1/../../../../arm-linux-androideabi/bin/ld:
error: version script assignment of LIBC_PRIVATE to symbol
__gnu_uldivmod_helper failed: symbol not defined
/home/user/rda-n/prebuilts/gcc/linux-x86/arm/arm-linux-androideabi-6.1/bin/../lib/gcc/arm-linux-androideabi/6.1.1/../../../../arm-linux-androideabi/bin/ld:
error: version script assignment of LIBC_PRIVATE to symbol __udivdi3
failed: symbol not defined
collect2: error: ld returned 1 exit status
Any help will be very appreciated.
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