Hello Erik, I've just seen your new patch http://codereview.chromium.org/3161009/diff/1/2 Thank you !
Yoann On 6 août, 16:25, Yoann <[email protected]> wrote: > Thank you Erik. > > I've managed to cross-compile V8 !! > > I've inspected every functions of platform-linux.cc and found the > guilty one, DebugBreak() > > void OS::DebugBreak() { > // TODO(lrn): Introduce processor define for runtime system (!= > V8_ARCH_x, > // which is the architecture of generated code). > #if (defined(__arm__) || defined(__thumb__)) && \ > defined(CAN_USE_ARMV5_INSTRUCTIONS) > asm("bkpt 0"); > #elif defined(__mips__) > asm("break"); > #else > asm("int $3"); > #endif > > } > > Now it's quite logical ... I'm on armv4 architecture, then I had a > beautifull asm error. (according to the preprocessor tests) > I'have commented all the content of the function, and It builds and > works fine on my board ! It's maybe not very clean, but it works ! > Great ! > > To answer to your questions, I'm actually interested in V8 engine > only, to develop a SDK. > I have 64 Mb of memory. Now I'm headed to bench this on my board. I > hope these 64 Mb will be enough to wrap it with my system. > > Thank you ! > Have a nice day > Yoann > > On 6 août, 10:45, Erik Corry <[email protected]> wrote: > > > Den 5. aug. 2010 17.17 skrev Yoann <[email protected]>: > > > > Hello, > > > > I'm trying to cross-compile V8 for an ARM 920T board (armv4) with a > > > toolchain generated by buildroot (based on the uclibc), 4.3.4 version. > > > I'm working with ubuntu 10.04. > > > I wonder how much memory your 920T board has. I would guess it doesn't have > > enough to run Chromium. Perhaps that is not your aim. > > > > I definitly need some help... > > > > After a "svn checkouthttp://v8.googlecode.com/svn/trunk/v8"; I've > > > tried the following scons command with some exports : > > > > export GCC_VERSION=43 > > > > export CC="$BUILDROOT_PATH/output/staging/usr/bin/arm-linux-gcc -I > > > $BUILDROOT_PATH/output/staging/usr/include -I$BUILDROOT_PATH/output/ > > > staging/include --sysroot=$BUILDROOT_PATH > > > export CXX="$BUILDROOT_PATH/output/staging/usr/bin/arm-linux-g++" > > > export CXXFLAGS="-I. -march=armv4t --sysroot=$BUILDROOT_PATH/output/ > > > staging/ -isysroot $BUILDROOT_PATH/output/staging" > > > export CFLAGS="-I. -march=armv4t" > > > export LDFLAGS="--sysroot $BUILDROOT_PATH/output/staging/" > > > > scons mode=debug arch=arm library=shared prof=off os=linux > > > > (I know some of these scons options are optional, but I wanted to be > > > sure to get what I need) > > > > Then, i get this error : > > > > src/platform-linux.cc:48:56: error: execinfo.h: No such file or > > > This stuff isn't very important for V8. It's only used by the profiler. > > Just remove this include. > > > All the uses of backtrace etc. are inside an #ifdef __GLIBC__. I guess with > > uclibc that macro should be undefined? So I'm not sure why you get these > > errors. > > > > directory > > > src/platform-linux.cc: In static member function 'static int > > > > v8::internal::OS::StackWalk(v8::internal::Vector<v8::internal::OS::StackFrame>)': > > > src/platform-linux.cc:405: error: 'backtrace' was not declared in this > > > scope > > > src/platform-linux.cc:407: error: 'backtrace_symbols' was not declared > > > in this scope > > > src/platform-linux.cc: In function 'void > > > v8::internal::ProfilerSignalHandler(int, siginfo_t*, void*)': > > > src/platform-linux.cc:773: error: 'struct sigcontext' has no member > > > named 'gregs' > > > src/platform-linux.cc:774: error: 'struct sigcontext' has no member > > > named 'gregs' > > > src/platform-linux.cc:775: error: 'struct sigcontext' has no member > > > named 'gregs' > > > scons: *** [obj/debug/platform-linux.os] Error 1 > > > scons: building terminated because of errors. > > > > I've read backtrace() was a glibc-specific function and because I'm > > > not interested in backtrace in my project I've created an execinfo.h > > > file with redefined functions. I've put it at the project root in my > > > case. > > > > #ifndef _EXECINFO_H_ > > > #define _EXECINFO_H_ 1 > > > > #include <sys/cdefs.h> > > > > __BEGIN_DECLS > > > > int backtrace(void**,int){ return 0; } > > > char** backtrace_symbols(void* const*,int){return NULL; } > > > void backtrace_symbols_fd(void* const*,int,int){} > > > > __END_DECLS > > > > #endif /* !_EXECINFO_H_ */ > > > > I know, it's sooo nasty ! I'm trying every kind of way to get V8 cross- > > > compiled ... > > > > Now, the backtrace error is gone, I deal whith the > > > ProfilerSignalHandler one by uncommenting the all function content. > > > Then it ends up getting this : > > > > /home/yoann/workspace/karotz/buildroot/buildroot-2010.05/output/ > > > staging/usr/bin/arm-linux-g++ -o obj/debug/platform-linux.os -c -I. - > > > march=armv4t --sysroot=/home/yoann/workspace/karotz/buildroot/ > > > buildroot-2010.05/output/staging/ -isysroot /home/yoann/workspace/ > > > karotz/buildroot/buildroot-2010.05/output/staging -Wall -Werror -W - > > > Wno-unused-parameter -Wnon-virtual-dtor -pedantic -g -O0 -ansi -fno- > > > rtti -fno-exceptions -fvisibility=hidden -Wall -Werror -W -Wno-unused- > > > parameter -Wnon-virtual-dtor -pedantic -g -O0 -ansi -fPIC - > > > DV8_TARGET_ARCH_ARM -DENABLE_DISASSEMBLER -DDEBUG -DV8_SHARED - > > > DENABLE_VMSTATE_TRACKING -DENABLE_LOGGING_AND_PROFILING - > > > DV8_ENABLE_CHECKS -DENABLE_DEBUGGER_SUPPORT -Isrc src/platform- > > > linux.cc > > > /tmp/ccSp2ze3.s: Assembler messages: > > > /tmp/ccSp2ze3.s:414: Error: bad instruction `int $3' > > > int3 is an x86 instruction. I can't work out how you are getting this. > > Could it be that your include paths are wrong so you are including system > > libraries from the host rather than the target? That would also explain the > > ifdef not working, perhaps? > > > > scons: *** [obj/debug/platform-linux.os] Error 1 > > > scons: building terminated because of errors. > > > > I've tried several branches of V8 (trunk, bleeding_edge and 2.2) but i > > > get the same result. > > > > I think this is a flag problem. I'm missing something ... > > > I fear that with the armv4t + uclibc combination I'm entering in a > > > world of pain. > > > > If someone has any idea to deal with my problem. I would so pleased to > > > hear anything that would help me. > > > > Thanks in advance !! > > > > -- > > > v8-users mailing list > > > [email protected] > > >http://groups.google.com/group/v8-users > > > -- > > Erik Corry, Software Engineer > > Google Denmark ApS. CVR nr. 28 86 69 84 > > c/o Philip & Partners, 7 Vognmagergade, P.O. Box 2227, DK-1018 Copenhagen K, > > Denmark. -- v8-users mailing list [email protected] http://groups.google.com/group/v8-users
