Does anyone have a working procedure for building v8 under mingw?

[Zac Hansen]

It seems the instructions here: https://github.com/v8/v8/wiki/Building-with-Gyp  have been broken for 4+ years when looking for solutions to the problems I"m having.

I done a clean checkout with DEPOT_TOOLS_WIN_TOOLCHAIN=0 set, put python in my path, but when I type make ia32.releaseI get:

$ make ia32.release -j4
make[1]: Entering directory `/c/Users/xaxxon/deleteme3/v8/out'
make[1]: *** No rule to make target `../build\isolate.gypi', needed by `Makefile.ia32.release'.  Stop.
make[1]: Leaving directory `/c/Users/xaxxon/deleteme3/v8/out'
make: *** [ia32.release] Error 2

or if I do x64.release:

$ make x64.release -j4
make[1]: Entering directory `/c/Users/xaxxon/deleteme3/v8/out'
third_party\icu\icudata.target.x64.release.mk:8: warning: overriding commands for target `/c/Users/xaxxon/deleteme3/v8/out/x64.release\icudt.dll'
third_party\icu\icudata.host.x64.release.mk:8: warning: ignoring old commands for target `/c/Users/xaxxon/deleteme3/v8/out/x64.release\icudt.dll'
make[1]: *** No rule to make target `../build\isolate.gypi', needed by `Makefile.x64.release'.  Stop.
make[1]: Leaving directory `/c/Users/xaxxon/deleteme3/v8/out'
make: *** [x64.release] Error 2

and if I don't do the  DEPOT_TOOLS_WIN_TOOLCHAIN=0, I get landmines.py errors.   

C:\Users\xaxxon\deleteme4>fetch v8
Running: 'c:\Users\xaxxon\depot_tools\python276_bin\python.exe' 'c:\Users\xaxxon\depot_tools\gclient.py' root
Running: 'c:\Users\xaxxon\depot_tools\python276_bin\python.exe' 'c:\Users\xaxxon\depot_tools\gclient.py' config --spec 'solutions = [
  {
    "managed": False,
    "name": "v8",
    "url": "https://chromium.googlesource.com/v8/v8.git",
    "custom_deps": {},
    "deps_file": "DEPS",
    "safesync_url": "",
  },
]
'
Running: 'c:\Users\xaxxon\depot_tools\python276_bin\python.exe' 'c:\Users\xaxxon\depot_tools\gclient.py' sync --with_branch_heads
Error: Command 'c:\\Users\\xaxxon\\depot_tools\\python276_bin\\python.exe v8/build/landmines.py' returned non-zero exit status 1 in C:\Users\xaxxon\deleteme4
Traceback (most recent call last):
  File "c:\Users\xaxxon\depot_tools\\fetch.py", line 346, in <module>
    sys.exit(main())
  File "c:\Users\xaxxon\depot_tools\\fetch.py", line 341, in main
    return run(options, spec, root)
  File "c:\Users\xaxxon\depot_tools\\fetch.py", line 335, in run
    return checkout.init()
  File "c:\Users\xaxxon\depot_tools\\fetch.py", line 142, in init
    self.run_gclient(*sync_cmd)
  File "c:\Users\xaxxon\depot_tools\\fetch.py", line 76, in run_gclient
    return self.run(cmd_prefix + cmd, **kwargs)
  File "c:\Users\xaxxon\depot_tools\\fetch.py", line 66, in run
    return subprocess.check_output(cmd, **kwargs)
  File "c:\Users\xaxxon\depot_tools\python276_bin\lib\subprocess.py", line 573, in check_output
    raise CalledProcessError(retcode, cmd, output=output)
subprocess.CalledProcessError: Command '('c:\\Users\\xaxxon\\depot_tools\\python276_bin\\python.exe', 'c:\\Users\\xaxxon\\depot_tools\\gclient.py', 'sync', '--with_branch_heads')' returned non-zero exit status 2

someone previously suggested running gclient sync after running into this error:

C:\Users\xaxxon\deleteme4\v8>gclient sync
.gclient file in parent directory C:\Users\xaxxon\deleteme4 might not be the file you want to use
Syncing projects: 100% (17/17), done.


________ running 'c:\Users\xaxxon\depot_tools\python276_bin\python.exe v8/build/landmines.py' in 'C:\Users\xaxxon\deleteme4'






Please follow the instructions at https://www.chromium.org/developers/how-tos/build-instructions-windows




Traceback (most recent call last):
  File "v8/build/landmines.py", line 245, in <module>
    sys.exit(main())
  File "v8/build/landmines.py", line 232, in main
    gyp_environment.set_environment()
  File "C:\Users\xaxxon\deleteme4\v8\build\gyp_environment.py", line 54, in set_environment
    vs_toolchain.SetEnvironmentAndGetRuntimeDllDirs()
  File "C:\Users\xaxxon\deleteme4\v8\build\vs_toolchain.py", line 44, in SetEnvironmentAndGetRuntimeDllDirs
    Update()
  File "C:\Users\xaxxon\deleteme4\v8\build\vs_toolchain.py", line 331, in Update
    subprocess.check_call(get_toolchain_args)
  File "c:\Users\xaxxon\depot_tools\python276_bin\lib\subprocess.py", line 540, in check_call
    raise CalledProcessError(retcode, cmd)
subprocess.CalledProcessError: Command '['c:\\Users\\xaxxon\\depot_tools\\python276_bin\\python.exe', 'c:\\Users\\xaxxon\\depot_tools\\win_toolchain\\get_toolchain_if_necessary.py', '--output-json', 'C:\\Users\\xaxxon\\deleteme4\\v8\\build\\win_toolchain.json', '03a4e939cd325d6bc5216af41b92d02dda1366a6']' returned non-zero exit status 1
Error: Command 'c:\\Users\\xaxxon\\depot_tools\\python276_bin\\python.exe v8/build/landmines.py' returned non-zero exit status 1 in C:\Users\xaxxon\deleteme4

if I try the build anyhow:

$ make ia32.release
PYTHONPATH="/c/Users/xaxxon/deleteme4/v8/tools/generate_shim_headers:/c/Users/xaxxon/deleteme4/v8/build::/c/Users/xaxxon/deleteme4/v8/build/gyp/pylib:" \
        GYP_GENERATORS=make \
        build/gyp/gyp --generator-output="out" build/all.gyp \
                      -Ibuild/standalone.gypi --depth=. \
                      -Dv8_target_arch=ia32 \
                       \
                       \
                      -S.ia32.release  -Dv8_enable_backtrace=1 -Darm_fpu=default -Darm_float_abi=default
make[1]: Entering directory `/c/Users/xaxxon/deleteme4/v8/out'
make[1]: *** No rule to make target `../build\isolate.gypi', needed by `Makefile.ia32.release'.  Stop.
make[1]: Leaving directory `/c/Users/xaxxon/deleteme4/v8/out'
make: *** [ia32.release] Error 2

Anyone have a working procedure?   Or, failing that, does anyone know if v8 will build under the latest Visual Studio?   

Thank you.

--Zac

[Jochen Eisinger]

I use the mingw that comes with depot_tools (specifically, started via git_bash.bat in depot_tools/git-1.9.5 (or whatever the exact directory name is).

I use, however, visual studio 2015 to build (I just open the build/all.sln using VS). I don't think the make generator works on windows. You might have some luck using ninja (GYP_GENERATORS=ninja).

Can you file a bug about landmines not working with the depot_tool toolchain?

best

-jochen

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[Zac Hansen]

Thank you for your help.  I managed to get it compiling in visual studio 2015.2.

I submitted this bug:  https://bugs.chromium.org/p/v8/issues/detail?id=4927&can=2&start=0&num=100&q=&colspec=ID%20Type%20Status%20Priority%20Owner%20Summary%20HW%20OS%20Component%20Stars&groupby=&sort=

I hope that is sufficient information.

--Zac

[Jakob Kummerow]

Have you seen the MinGW section of the instructions?

[Zac Hansen]

Yeah, it doesn't work for me.   Or maybe there's some step I'm missing?

$ tools/mingw-generate-makefiles.sh

find: 'out': No such file or directory

make: *** No rule to make target `out/Makefile.ia32'.  Stop.

find: 'out': No such file or directory

xaxxon@DESKTOP-QK88IBI MINGW64 ~/v8 ((1ff65e9...))

$ mkdir out

xaxxon@DESKTOP-QK88IBI MINGW64 ~/v8 ((1ff65e9...))

$ tools/mingw-generate-makefiles.sh

make: *** No rule to make target `out/Makefile.ia32'.  Stop.

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[Jakob Kummerow]

Hm. That appears to have bitrotted then. Which kind of indicates how much usage the MinGW build is getting. It's community maintained, so feel free to fix it and contribute a patch. As a first hint: instead of 

make out/Makefile.ia32

there should probably be

make out/Makefile.ia32.release
make out/Makefile.ia32.debug

in tools/mingw-generate-makefiles.sh around line 79.

[Zac Hansen]

:-D

[Zac Hansen]

I have python 2.7.11 downloaded from python.org in my path and am running out of the depot_tools\git-2.7.4-64_bin\bin\bash.exe with that change you suggested, now I get this error repeated many (many) times.   Sorry I'm kind of useless in figuring out what's going on.. I don't know much about python or the build system v8 is using... 

--Zac

$ ./tools/mingw-generate-makefiles.sh

PYTHONPATH="/c/Users/xaxxon/v8/tools/generate_shim_headers:/c/Users/xaxxon/v8/build::/c/Users/xaxxon/v8/build/gyp/pylib:" \

        GYP_GENERATORS=make \

        build/gyp/gyp --generator-output="out" build/all.gyp \

                      -Ibuild/standalone.gypi --depth=. \

                      -Dv8_target_arch=ia32 \

                       \

                       \

                      -S.ia32.release  -Dv8_enable_backtrace=1 -Darm_fpu=default -Darm_float_abi=default

Traceback (most recent call last):

  File "<string>", line 1, in <module>

  File "c:\Python27\lib\multiprocessing\forking.py", line 380, in main

    prepare(preparation_data)

  File "c:\Python27\lib\multiprocessing\forking.py", line 503, in prepare

    file, path_name, etc = imp.find_module(main_name, dirs)

ImportError: No module named gyp

Here's my path info:

$ echo $PATH

/mingw64/bin:/usr/bin:/c/Users/xaxxon/bin:/c/WINDOWS/system32:/c/WINDOWS:/c/WINDOWS/System32/Wbem:/c/WINDOWS/System32/WindowsPowerShell/v1.0:/c/Users/xaxxon/.dnx/bin:/c/Program Files/Microsoft DNX/Dnvm:/c/Program Files (x86)/Windows Kits/8.1/Windows Performance Toolkit:/c/Program Files/Microsoft SQL Server/120/Tools/Binn:/c/Program Files/Microsoft SQL Server/110/Tools/Binn:/c/Program Files (x86)/Microsoft SDKs/TypeScript/1.0:/c/Program Files (x86)/NVIDIA Corporation/PhysX/Common:/c/WINDOWS/system32:/c/WINDOWS:/c/WINDOWS/System32/Wbem:/c/WINDOWS/System32/WindowsPowerShell/v1.0:/c/Program Files/Git/cmd:/c/Program Files/Git/mingw64/bin:/c/Program Files/Git/usr/bin:/c/Program Files/TortoiseGit/bin:/c/Program Files (x86)/Livestreamer:%USERPROFILE%/.dnx/bin:/c/Program Files/Microsoft DNX/Dnvm:/c/Program Files/Microsoft SQL Server/130/Tools/Binn:/c/mingw/bin:/c/mingw/msys/1.0/bin:/c/Users/xaxxon/AppData/Local/atom/bin:/c/Program Files (x86)/FAHClient:/c/users/xaxxon/depot_tools:/c/Python27:/c/Program Files (x86)/CMake/bin

xaxxon@DESKTOP-QK88IBI MINGW64 ~/v8 ((1ff65e9...))

$ python

Python 2.7.11 (v2.7.11:6d1b6a68f775, Dec  5 2015, 20:32:19) [MSC v.1500 32 bit (Intel)] on win32

Type "help", "copyright", "credits" or "license" for more information.

>>>

>>>

xaxxon@DESKTOP-QK88IBI MINGW64 ~/v8 ((1ff65e9...))

$ which python

/c/Python27/python