Installing Ada on arm macOS

installing-ada-on-arm-macos.sh

brew install texinfo bison m4 flex
curl -L https://github.com/alire-project/GNAT-FSF-builds/releases/download/gnat-13.2.0-1/gnat-x86_64-darwin-13.2.0-1.tar.gz | tar xzf -
git clone --depth=1 https://github.com/iains/gcc-13-branch gcc-13.2.0
export PATH=$PWD/gnat-x86_64-darwin-13.2.0-1/bin:$PATH
cd gcc-13.2.0
./contrib/download_prerequisites
mkdir ../build
cd ../build
CC="x86_64-apple-darwin21.6.0-gcc" CXX="x86_64-apple-darwin21.6.0-g++" \
    ../gcc-13.2.0/configure \
    --prefix=/usr/local \
    --enable-languages=c,ada,c++ \
    --enable-libstdcxx --enable-libstdcxx-threads --enable-libada --disable-nls \
    --without-libiconv-prefix --disable-libstdcxx-pch \
    --with-sysroot=/Library/Developer/CommandLineTools/SDKs/MacOSX.sdk \
    --without-target-system-zlib \
    --with-as=/usr/bin/as --with-ar=/usr/bin/ar --with-ld=/usr/bin/ld \
    --with-dsymutil=/usr/bin/dsymutil --with-ranlib=/usr/bin/ranlib \
    --disable-multilib --disable-libcilkrts --without-build-config \
    --with-specs='%{!sysroot=*:--sysroot=%:if-exists-else(/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk /Library/Developer/CommandLineTools/SDKs/MacOSX.sdk)}'\
    --target=aarch64-apple-darwin21.6.0 --build=x86_64-apple-darwin21.6.0 \
    AS_FOR_TARGET=/usr/bin/as LD_FOR_TARGET=/usr/bin/ld \
    NM_FOR_TARGET=/usr/bin/nm RANLIB_FOR_TARGET=/usr/bin/ranlib \
    AR_FOR_TARGET=/usr/bin/ar LIPO_FOR_TARGET=/usr/bin/lipo \
    DSYMUTIL_FOR_TARGET=/usr/bin/dsymutil \
    STRIP_FOR_TARGET=/usr/bin/strip

make -j4 all
make install-strip DESTDIR=$PWD/../destdir
# missing files required to rebuild RTS
cp -v gcc/ada/rts/*.{c,h,gpr,lst} ../gcc-13.2.0/libgcc/unwind-pe.h \
    ../destdir/usr/local/lib/gcc/aarch64-apple-darwin21.6.0/13.2.0/adainclude/
cd ..
tar cavf aarch64-macOS-gcc-13.2.tar.bz2 -C destdir .