fix(libscap): restore configurable cmake variables

Signed-off-by: Roberto Scolaro <[email protected]>

userspace/libscap/CMakeLists.txt

@@ -31,16 +31,22 @@ if(CMAKE_SYSTEM_NAME MATCHES "Linux")
 	endif()
 
 	# do not remove this since when WITH_DRIVER is off
-	set(DRIVER_NAME "scap" CACHE STRING _)
+	if(NOT DEFINED DRIVER_NAME)
+		set(DRIVER_NAME "scap")
+	endif()
 
 	string(REPLACE "-" "_" SCAP_KERNEL_MODULE_NAME "${DRIVER_NAME}")
 	add_definitions(-DSCAP_KERNEL_MODULE_NAME="${SCAP_KERNEL_MODULE_NAME}")
 endif()
 
-set(SCAP_HOST_ROOT_ENV_VAR_NAME "HOST_ROOT" CACHE STRING _)
+if(NOT DEFINED SCAP_HOST_ROOT_ENV_VAR_NAME)
+	set(SCAP_HOST_ROOT_ENV_VAR_NAME "HOST_ROOT")
+endif()
 add_definitions(-DSCAP_HOST_ROOT_ENV_VAR_NAME="${SCAP_HOST_ROOT_ENV_VAR_NAME}")
 
-set(SCAP_HOSTNAME_ENV_VAR "SCAP_HOSTNAME" CACHE STRING _)
+if(NOT DEFINED SCAP_HOSTNAME_ENV_VAR)
+	set(SCAP_HOSTNAME_ENV_VAR "SCAP_HOSTNAME")
+endif()
 add_definitions(-DSCAP_HOSTNAME_ENV_VAR="${SCAP_HOSTNAME_ENV_VAR}")
 
 if (DEFINED SCAP_BPF_PROGS_TAIL_CALLED_MAX)