Try removing `USE_CLANG_PLATFORM_BUILD := false` so that you're building
with Clang instead of GCC. All the AOSP devices that I checked are building
with Clang by default in android-7.0.0_r1, and the default for that
variable if unset was switched to true.
On Wed, Oct 26, 2016 at 10:01 AM Yingchun Li <sword.l.dra...@gmail.com>
wrote:
> 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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