snort3: update to 3.1.18.0

Signed-off-by: W. Michael Petullo <mike@flyn.org>

net/snort3/patches/020-libatomic.patch

@@ -0,0 +1,75 @@
+--- /dev/null
++++ b/cmake/FindAtomic.cmake
+@@ -0,0 +1,11 @@
++find_library(ATOMIC_LIBRARIES NAMES atomic
++    HINTS ${ATOMIC_LIBRARIES_DIR_HINT})
++
++include(FindPackageHandleStandardArgs)
++find_package_handle_standard_args(Atomic DEFAULT_MSG ATOMIC_LIBRARIES)
++
++mark_as_advanced(ATOMIC_LIBRARIES)
++
++if (ATOMIC_LIBRARIES)
++    set(HAVE_ATOMIC "1")
++endif()
+--- a/cmake/include_libraries.cmake
++++ b/cmake/include_libraries.cmake
+@@ -15,6 +15,7 @@ if (ENABLE_UNIT_TESTS)
+ endif (ENABLE_UNIT_TESTS)
+ 
+ # optional libraries
++find_package(Atomic QUIET)
+ find_package(LibLZMA QUIET)
+ find_package(Asciidoc QUIET)
+ find_package(DBLATEX QUIET)
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -116,6 +116,14 @@ else ()
+     DAQ Modules:    Dynamic")
+ endif ()
+ 
++if (HAVE_ATOMIC)
++    message("\
++    libatomic:      ON")
++else ()
++    message("\
++    libatomic:      OFF")
++endif ()
++
+ if (HAVE_FLATBUFFERS)
+     message("\
+     Flatbuffers:    ON")
+--- a/configure_cmake.sh
++++ b/configure_cmake.sh
+@@ -108,6 +108,8 @@ Optional Packages:
+                             libhs include directory
+     --with-hyperscan-libraries=DIR
+                             libhs library directory
++    --with-atomic-libraries=DIR
++                            atomic library directory
+     --with-flatbuffers-includes=DIR
+                             flatbuffers include directory
+     --with-flatbuffers-libraries=DIR
+@@ -447,6 +449,9 @@ while [ $# -ne 0 ]; do
+         --with-hyperscan-libraries=*)
+             append_cache_entry HS_LIBRARIES_DIR PATH $optarg
+             ;;
++        --with-atomic-libraries=*)
++            append_cache_entry ATOMIC_LIBRARIES_DIR_HINT PATH $optarg
++            ;;
+         --with-flatbuffers-includes=*)
+             append_cache_entry FLATBUFFERS_INCLUDE_DIR_HINT PATH $optarg
+             ;;
+--- a/src/CMakeLists.txt
++++ b/src/CMakeLists.txt
+@@ -25,6 +25,10 @@ set(EXTERNAL_INCLUDES
+     ${ZLIB_INCLUDE_DIRS}
+ )
+ 
++if ( HAVE_ATOMIC )
++    LIST(APPEND EXTERNAL_LIBRARIES ${ATOMIC_LIBRARIES})
++endif()
++
+ if ( ENABLE_STATIC_DAQ )
+     LIST(APPEND EXTERNAL_LIBRARIES ${DAQ_STATIC_MODULE_LIBS})
+ endif ()