Restrict cmake below v4 for libssh 0.9.6 compat

Author: webknjaz

build-scripts/manylinux-container-image/install-userspace-tools.sh

@@ -14,7 +14,13 @@ VIRTUALENV_PIP_BIN="${VIRTUALENV_PYTHON_BIN} -m pip"
 TOOLS_PKGS=auditwheel
 if [ "${ARCH}" == "x86_64" ]
 then
-    TOOLS_PKGS="${TOOLS_PKGS} cmake --only-binary=cmake"
+    # NOTE: Cmake removed compatibility with `cmake < 3.5` that
+    # NOTE: libssh 0.9.6 is set up to require.
+    # NOTE: So this patch limits the version of `cmake` we install.
+    #
+    # Ref: https://github.com/eclipse-ecal/ecal/issues/2041
+    # FIXME: Drop the restriction once libssh is bumped to v0.11 series.
+    TOOLS_PKGS="${TOOLS_PKGS} cmake<4 --only-binary=cmake"
 fi
 
 # Avoid creation of __pycache__/*.py[c|o]