build: Fix cmake variable naming clash in DPDK compile options

compile_options variable is used in FindSanitizers.cmake as well. So if
compile_options is not set in Finddpdk.cmake, then it make get value
from FindSanitizers.cmake and break the build.

Author: p12tic

cmake/Finddpdk.cmake

@@ -153,7 +153,7 @@ if (dpdk_FOUND AND NOT (TARGET dpdk))
   if(_warning_supported_volatile)
     # include/generic/rte_spinlock.h increments volatiled-qualified type with
     # "++". but this is deprecated by GCC, so silence it.
-    set(compile_options
+    set(dpdk_compile_options
       INTERFACE_COMPILE_OPTIONS "-Wno-volatile")
   endif()
   if (library_suffix STREQUAL CMAKE_STATIC_LIBRARY_SUFFIX)
@@ -179,7 +179,7 @@ if (dpdk_FOUND AND NOT (TARGET dpdk))
         INTERFACE_INCLUDE_DIRECTORIES ${dpdk_INCLUDE_DIR}
         INTERFACE_LINK_LIBRARIES "${dpdk_dependencies}"
         IMPORTED_OBJECTS ${dpdk_object_path}
-        ${compile_options})
+        ${dpdk_compile_options})
     # we include dpdk in seastar already, so no need to expose it with
     # dpdk_LIBRARIES
     set (dpdk_LIBRARIES "")
@@ -191,6 +191,6 @@ if (dpdk_FOUND AND NOT (TARGET dpdk))
       PROPERTIES
         INTERFACE_INCLUDE_DIRECTORIES "${dpdk_PC_INCLUDE_DIRS}"
         INTERFACE_LINK_LIBRARIES "${_dpdk_libraries};${dpdk_dependencies}"
-        ${compile_options})
+        ${dpdk_compile_options})
   endif()
 endif ()