More updates for 2024 nov 01 (#645)

* Move optional steps for testing VMs out of README.md file
This may help avoid new users being confused that they must follow
those instructions.

Signed-off-by: Andy Fingerhut <andy_fingerhut@alum.wustl.edu>

* Update versions of P4 dev tools to latest as of 2024-Nov-01
for both vm-ubuntu-24.04 and vm-ubuntu-20.04

Signed-off-by: Andy Fingerhut <andy_fingerhut@alum.wustl.edu>

* More updates needed for 2024-Nov-01 successful VM creation

Signed-off-by: Andy Fingerhut <andy_fingerhut@alum.wustl.edu>

---------

Signed-off-by: Andy Fingerhut <andy_fingerhut@alum.wustl.edu>

Author: jafingerhut

vm-ubuntu-20.04/root-dev-bootstrap.sh

@@ -109,7 +109,7 @@ sudo pip3 install protobuf==3.18.1
 # Starting in 2019-Nov, Python3 version of Scapy is needed for `cd
 # p4c/build ; make check` to succeed.
 # ply package is needed for ebpf and ubpf backend tests to pass
-sudo pip3 install scapy ply
+sudo pip3 install scapy==2.5.0 ply
 
 # Things needed for PTF
 sudo pip3 install pypcap

vm-ubuntu-20.04/root-release-bootstrap.sh

@@ -39,4 +39,4 @@ apt-get install -qq -y --no-install-recommends --fix-missing\
   p4lang-bmv2 \
   p4lang-pi
 
-sudo pip3 install -U scapy ptf psutil grpcio
+sudo pip3 install -U scapy==2.5.0 ptf psutil grpcio

vm-ubuntu-20.04/user-dev-bootstrap.sh

@@ -203,7 +203,7 @@ git checkout ${P4C_COMMIT}
 git submodule update --init --recursive
 mkdir -p build
 cd build
-cmake .. -DENABLE_TEST_TOOLS=ON
+cmake .. -DCMAKE_BUILD_TYPE=Release -DENABLE_TEST_TOOLS=ON
 # The command 'make -j${NUM_CORES}' works fine for the others, but
 # with 2 GB of RAM for the VM, there are parts of the p4c build where
 # running 2 simultaneous C++ compiler runs requires more than that

vm-ubuntu-24.04/user-dev-bootstrap.sh

@@ -131,7 +131,7 @@ git checkout ${P4C_COMMIT}
 git submodule update --init --recursive
 mkdir -p build
 cd build
-cmake .. -DENABLE_TEST_TOOLS=ON
+cmake .. -DCMAKE_BUILD_TYPE=Release -DENABLE_TEST_TOOLS=ON
 # -j3 assumes 6+ GB of RAM and 3+ vCPUs in VM
 make -j3
 sudo make install/strip