Avoid cmake reinstall

scripts/setup/al2/install_cbmc.sh

@@ -24,8 +24,8 @@ pushd "${WORK_DIR}"
 mkdir build
 git submodule update --init
 
-cmake -S . -Bbuild -DWITH_JBMC=OFF -Dsat_impl="minisat2;cadical"
-make -C build -j$(nproc)
+cmake3 -S . -Bbuild -DWITH_JBMC=OFF -Dsat_impl="minisat2;cadical"
+cmake3 --build build -- -j$(nproc)
 sudo make -C build install
 
 popd

scripts/setup/al2/install_deps.sh

@@ -5,7 +5,12 @@
 set -eu
 
 # Dependencies.
+# Note: CMake 3.8 or higher is required to build CBMC, but those versions are
+# only available in AWS AMIs through `cmake3`. So we install `cmake3` and use it
+# to build CBMC.
 DEPS=(
+  cmake
+  cmake3
   git
   openssl-devel
   python3-pip
@@ -24,7 +29,6 @@ python3 -m pip install autopep8
 # Get the directory containing this script
 SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" >/dev/null 2>&1 && pwd )"
 
-${SCRIPT_DIR}/reinstall_cmake.sh
 ${SCRIPT_DIR}/install_cbmc.sh
 ${SCRIPT_DIR}/install_viewer.sh
 # The Kissat installation script is platform-independent, so is placed one level up