Using built-in specs.
COLLECT_GCC=g++
COLLECT_LTO_WRAPPER=/usr/local/bin/../libexec/gcc/x86_64-apple-darwin20/10.3.0/lto-wrapper
Target: x86_64-apple-darwin20
Configured with: ../configure --prefix=/usr/local/Cellar/gcc@10/10.3.0 --libdir=/usr/local/Cellar/gcc@10/10.3.0/lib/gcc/10 --disable-nls --enable-checking=release --enable-languages=c,c++,objc,obj-c++,fortran --program-suffix=-10 --with-gmp=/usr/local/opt/gmp --with-mpfr=/usr/local/opt/mpfr --with-mpc=/usr/local/opt/libmpc --with-isl=/usr/local/opt/isl --with-pkgversion='Homebrew GCC 10.3.0' --with-bugurl=
https://github.com/Homebrew/homebrew-core/issues --build=x86_64-apple-darwin20 --with-system-zlib --disable-multilib --with-native-system-header-dir=/usr/include --with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk
Thread model: posix
Supported LTO compression algorithms: zlib
gcc version 10.3.0 (Homebrew GCC 10.3.0)