對不起，沒有實現：64位

Question

不編譯模式，這就是我想要做的（在Windows 7 64位）：

g++ -m64 -o main main.cpp 

而我得到的錯誤是：

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

我從這裏安裝了mingw-64-install.exe：https://sourceforge.net/projects/mingw-w64/files/Toolchains%20targetting%20Win32/Personal%20Builds/mingw-builds/installer/

但是我仍然得到同樣的錯誤。我是否也需要在環境變量中添加此文件夾的路徑？

感謝

編輯：

這是我所得到的，當我鍵入

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> 

Answer 1

當運行mingw-64-install.exe，你要選擇的設置屏幕上的x86_64架構。有了這個架構，64位也是默認目標。如果你跑g++ -v，你應該得到這樣的東西：

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)