$ gcc -v Using built-in specs. COLLECT_GCC=d:msysmingwingcc.exe COLLECT_LTO_WRAPPER=d:/msys/mingw/bin/../libexec/gcc/i686-w64-mingw32/8.4.0/lto-wrapper.exe Target: i686-w64-mingw32 Configured with: ../gcc-8.4.0/configure --prefix=/mingw32 --with-local-prefix=/mingw32 --build=i686-w64-mingw32 --host=i686-w64-mingw32 --target=i686-w64-mingw32 --with-native-system-header-dir=/mingw32/i686-w64-mingw32/include --libexecdir=/mingw32/libexec --enable-checking=release --enable-fully-dynamic-string --enable-graphite --enable-languages=c,lto,c++ --enable-libatomic --enable-libgomp --enable-libstdcxx-time=yes --enable-lto --enable-sjlj-exceptions --enable-shared --enable-static --enable-threads=posix --disable-64bit --disable-bootstrap --disable-isl-version-check --disable-libssp --disable-libstdcxx-debug --disable-libstdcxx-pch --disable-multilib --disable-nls --disable-rpath --disable-symvers --disable-werror --disable-win32-registry --with-arch=i686 --with-gmp=/usr/local --with-gnu-as --with-gnu-ld --with-isl=/usr/local --with-libiconv --with-mpc=/usr/local --with-mpfr=/usr/local --with-system-zlib --with-tune=generic --with-pkgversion='i686-posix-sjlj-20200304-8cd3bff, Built by NLSoft' --with-bugurl=http://www.cnblogs.com/nlsoft Thread model: posix gcc version 8.4.0 (i686-posix-sjlj-20200304-8cd3bff, Built by NLSoft) https://github.com/qq2225936589/gcc-i686-posix-sjlj-for-MSYS/releases/tag/8.4.0