/usr/sbin/update-alternatives --set gcc "/usr/bin/gcc-9"

#
# compile with gcc 9
#
# jdk11u
#
./configure --prefix=/usr \
    --exec-prefix=/usr \
    --enable-headless-only \
    --with-jvm-variants=server \
    --with-debug-level=release \
    --disable-debug-symbols \
    --disable-zip-debug-info \
    --enable-unlimited-crypto \
    --with-extra-cflags=-Os \
    --with-stdc++lib=dynamic \
    --with-extra-cflags='-fno-lifetime-dse -fno-delete-null-pointer-checks -Wno-error=return-type -Wno-error -fno-strict-overflow ' \
    --with-extra-cxxflags='-fno-lifetime-dse -fno-delete-null-pointer-checks -Wno-error=return-type -Wno-error -fno-strict-overflow '
    
make all 
make profiles
make images 

cd build
find . -exec strip --strip-unneeded {} \;

/usr/sbin/update-alternatives --set gcc "/usr/bin/gcc-12"