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Désolé, non implémenté: le mode 64 bits n'est pas compilé dans

Voici ce que j'essaie de faire (sur Windows 7 64 bits):

g++ -m64 -o main main.cpp

Et l'erreur que j'obtiens est:

Sorry, unimplemented: 64 bit mode not compiled in ...

J'ai installé mingw-64-install.exe à partir d'ici: https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/installer/ =

Mais je reçois toujours la même erreur. Dois-je également ajouter le chemin d'accès à ce dossier dans la variable d'environnement?

Merci

ÉDITER:

C'est ce que j'obtiens quand je tape

g++ -v

Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=c:/mingw/bin/../libexec/gcc/mingw32/4.9.3/lto-wrapper.exe
Target: mingw32
Configured with: ../src/gcc-4.9.3/configure --build=x86_64-pc-linux-gnu    --Host=m
ingw32 --prefix=/mingw --disable-win32-registry --target=mingw32 --with-Arch=i58
6 --enable-languages=c,c++,objc,obj-c++,fortran,ada --enable-static --enable-sha
red --enable-threads --with-dwarf2 --disable-sjlj-exceptions --enable- version-sp
ecific-runtime-libs --enable-libstdcxx-debug --with-tune=generic --enable-nls
 Thread model: win32​
 gcc version 4.9.3 <GCC>
c++windowsmingw-w64
12
lads

Lors de l'exécution mingw-64-install.exe, vous devez choisir le x86_64 architecture sur l'écran des paramètres. Avec cette architecture, 64 bits est également la cible par défaut. Si vous exécutez g++ -v, vous devriez obtenir quelque chose comme:

C:\>g++ -v
Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=C:/Program\ Files/mingw-w64/x86_64-5.3.0-posix-seh-rt_v4-rev0/mingw64/bin/../libexec/gcc/x86_64-w64-mingw32/5.3.0/lto-wrapper.exe
Target: x86_64-w64-mingw32
Configured with: ../../../src/gcc-5.3.0/configure --Host=x86_64-w64-mingw32 --build=x86_64-w64-mingw32 --target=x86_64-w64-mingw32 --prefix=/mingw64 --with-sysroot=/c/mingw530/x86_64-530-posix-seh-rt_v4-rev0/mingw64 --with-gxx-include-dir=/mingw64/x86_64-w64-mingw32/include/c++ --enable-shared --enable-static --disable-multilib --enable-languages=c,c++,fortran,lto --enable-libstdcxx-time=yes --enable-threads=posix --enable-libgomp --enable-libatomic --enable-lto --enable-graphite --enable-checking=release --enable-fully-dynamic-string --enable-version-specific-runtime-libs --disable-isl-version-check --disable-libstdcxx-pch --disable-libstdcxx-debug --enable-bootstrap --disable-rpath --disable-win32-registry --disable-nls --disable-werror --disable-symvers --with-gnu-as --with-gnu-ld --with-Arch=nocona --with-tune=core2 --with-libiconv --with-system-zlib --with-gmp=/c/mingw530/prerequisites/x86_64-w64-mingw32-static --with-mpfr=/c/mingw530/prerequisites/x86_64-w64-mingw32-static --with-mpc=/c/mingw530/prerequisites/x86_64-w64-mingw32-static --with-isl=/c/mingw530/prerequisites/x86_64-w64-mingw32-static --with-pkgversion='x86_64-posix-seh-rev0, Built by MinGW-W64 project' --with-bugurl=http://sourceforge.net/projects/mingw-w64 CFLAGS='-O2 -pipe -I/c/mingw530/x86_64-530-posix-seh-rt_v4-rev0/mingw64/opt/include -I/c/mingw530/prerequisites/x86_64-zlib-static/include -I/c/mingw530/prerequisites/x86_64-w64-mingw32-static/include' CXXFLAGS='-O2 -pipe -I/c/mingw530/x86_64-530-posix-seh-rt_v4-rev0/mingw64/opt/include -I/c/mingw530/prerequisites/x86_64-zlib-static/include -I/c/mingw530/prerequisites/x86_64-w64-mingw32-static/include' CPPFLAGS= LDFLAGS='-pipe -L/c/mingw530/x86_64-530-posix-seh-rt_v4-rev0/mingw64/opt/lib -L/c/mingw530/prerequisites/x86_64-zlib-static/lib -L/c/mingw530/prerequisites/x86_64-w64-mingw32-static/lib '
Thread model: posix
gcc version 5.3.0 (x86_64-posix-seh-rev0, Built by MinGW-W64 project)

La ligne Target doit indiquer x86_64.

9
nwellnhof