Conclusion: v8 compiles the host tool in 32bits (-m32), so we need to 
install the 32bits version of the system libs.
On Ubuntu 16.04:
sudo apt-get install -y g++-multilib  zlib1g-dev zlib1g-dev:i386

JD

On Tuesday, October 11, 2016 at 3:19:52 PM UTC+2, Jean-Daniel Michaud wrote:
>
> On Oct 11, 2016 14:26, "Rodolph Perfetta" <[email protected]> 
> wrote:
> >
> > The build system will generate a host binary to generate snapshots. IIRC 
> disabling snapshot (snapshot=off) will still result in the host binary 
> being built. So why not installing the host tools completely?
> >
>
> Haven't realized there was a need to compile stuff on the host, I thought 
> I was facing a bug. I see if I can fetch a list of host tools to install.
>
> > V8 3.30 is rather old and unsupported though I presume this is a 
> rethinkDB requirement. There is a script in the tool directory to help with 
> cross builds, e.g ./tools/cross_build_gcc.sh /path/to/gcc-armhf- 
> arm.release i18nsupport=off werror=no . You may also have to 
> pass linux_use_bundled_gold=0 to GYP.
> >
>
> Indeed, this is a rethinkdb req. And I prefer to stick to their build 
> system if I can so I'll go ahead and install the tools on the host. 
>
> > HTH,
>
> It does, thanks.
>
> > Rodolph
> >
> > On Mon, 10 Oct 2016 at 19:43 Jean-Daniel Michaud <
> [email protected]> wrote:
> >>
> >> Context: Trying to cross-compile RethinkDB for raspberry. Trying to 
> cross-compile V8 3.30 for Raspberry on a Ubuntu 16.04.
> >> The rethinkdb filesystem execute:
> >>
> >> + cd 
> /home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build
> >> + make arm.release 
> CXX=/home/jedi/rpi-toolchain/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++
>  
> LINK=/home/jedi/rpi-toolchain/arm-bcm2708/gcc-linaro-arm-linux-gnueabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++
>  
> LINK.target=/home/jedi/rpi-toolchain/arm-bcm2708/gcc-linaro-arm-linux-gnu
> >> eabihf-raspbian-x64/bin/arm-linux-gnueabihf-g++ 'GYPFLAGS=-Dwerror= 
> -Darm_version=6 -Darm_fpu=vfpv2' V=1
> >>
> >> It starts by compiling ../src/accessors.cc with the toolchain compiler.
> >> But after a while fails this way:
> >>
> >>   
> LD_LIBRARY_PATH=/home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/lib.host:/home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/lib.target:$LD_LIBRARY_PATH;
>  
> export LD_LIBRARY_PATH; cd ../tools/gyp; mkdir -p 
> /home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/obj/gen;
>  
> python ../../tools/js2c.py 
> "/home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/obj/gen/libraries.cc"
>  
> CORE off ../../src/runtime.js ../../src/v8natives.js ../../src/symbol.js 
> ../../src/array.js ../../src/string.js ../../src/uri.js 
> ../../src/third_party/fdlibm/fdlibm.js ../../src/math.js 
> ../../src/apinatives.js ../../src/date.js ../../src/regexp.js 
> ../../src/arraybuffer.js ../../src/typedarray.js ../../src/generator.js 
> ../../src/object-observe.js ../../src/collection.js 
> ../../src/weak-collection.js ../../src/collection-iterator.js 
> ../../src/promise.js ../../src/messages.js ../../src/json.js 
> ../../src/array-iterator.js ../../src/string-iterator.js 
> ../../src/debug-debugger.js ../../src/mirror-debugger.js 
> ../../src/liveedit-debugger.js ../../src/macros.py ../../src/i18n.js
> >>   g++ '-DV8_TARGET_ARCH_ARM' '-DV8_DEPRECATION_WARNINGS' 
> '-DV8_I18N_SUPPORT' '-DICU_UTIL_DATA_IMPL=ICU_UTIL_DATA_STATIC' 
> '-DU_USING_ICU_NAMESPACE=0' '-DU_ENABLE_DYLOAD=0' 
> '-DU_STATIC_IMPLEMENTATION' '-DUSE_EABI_HARDFLOAT=0' -I../. 
> -I../third_party/icu/source/i18n -I../third_party/icu/source/common  -Wall 
> -W -Wno-unused-parameter -Wno-long-long -pthread -fno-exceptions -pedantic 
> -Wno-missing-field-initializers -fvisibility=hidden -m32 -m32 
> -fdata-sections -ffunction-sections -O3 -fdata-sections -ffunction-sections 
> -O3 -Wnon-virtual-dtor -fno-rtti -std=gnu++0x -MMD -MF 
> /home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/.deps//home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/obj.host/v8_base/src/accessors.o.d.raw
>  
>  -c -o 
> /home/jedi/rethinkdb-2.3.5/build/packages/dsc/build/external/v8_3.30.33.16/build/out/arm.release/obj.host/v8_base/src/accessors.o
>  
> ../src/accessors.cc
> >> In file included from /usr/include/stdint.h:25:0,
> >>                  from 
> /usr/lib/gcc/x86_64-linux-gnu/5/include/stdint.h:9,
> >>                  from .././include/v8.h:19,
> >>                  from .././src/v8.h:29,
> >>                  from ../src/accessors.cc:5:
> >> /usr/include/features.h:367:25: fatal error: sys/cdefs.h: No such file 
> or directory
> >>
> >>
> >> It's trying to compile accessors.cc again but this time using the host 
> c++ compiler which does not have the proper headers.
> >> Couldn't find where in Makefile.arm.release the host compiler is called.
> >> Any help is appreciated.
> >>
> >> JD
> >>
> >>
> >> -- 
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