From e4ba6dbc3f1e76890b22773807ea37fe8fa2b1bc Mon Sep 17 00:00:00 2001
From: Daniel Baumann <daniel.baumann@progress-linux.org>
Date: Wed, 10 Apr 2024 22:34:10 +0200
Subject: Adding upstream version 4.2.2.

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
---
 cmake/modules/FindNL.cmake | 144 +++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 144 insertions(+)
 create mode 100644 cmake/modules/FindNL.cmake

(limited to 'cmake/modules/FindNL.cmake')

diff --git a/cmake/modules/FindNL.cmake b/cmake/modules/FindNL.cmake
new file mode 100644
index 00000000..d4f003e8
--- /dev/null
+++ b/cmake/modules/FindNL.cmake
@@ -0,0 +1,144 @@
+#
+# Find the native netlink includes and library
+#
+# If they exist, differentiate between versions 1, 2 and 3.
+# Version 1 does not have netlink/version.h
+# Version 2 started separating libraries (libnl{,-genl,-route}).
+# Version 3 (>= 3.2) started appending the major version number as suffix to
+# library names (libnl-3)
+#
+#  NL_INCLUDE_DIRS - where to find libnl.h, etc.
+#  NL_LIBRARIES    - List of libraries when using libnl.
+#  NL_FOUND        - True if libnl found.
+
+if(NL_LIBRARIES AND NL_INCLUDE_DIRS)
+  # in cache already
+  SET(NL_FOUND TRUE)
+else()
+  SET( SEARCHPATHS
+      /opt/local
+      /sw
+      /usr
+      /usr/local
+  )
+
+  find_package(PkgConfig)
+  pkg_check_modules(NL3 libnl-3.0 libnl-genl-3.0 libnl-route-3.0)
+  if(NOT NL3_FOUND)
+    pkg_search_module(NL2 libnl-2.0)
+  endif()
+
+  # Try to find NL 2.0, 3.0 or 3.1 (/usr/include/netlink/version.h) or
+  # NL >= 3.2 (/usr/include/libnl3/netlink/version.h)
+  find_path(NL3_INCLUDE_DIR
+    PATH_SUFFIXES
+      include/libnl3
+      include
+    NAMES
+      netlink/version.h
+    HINTS
+      "${NL3_libnl-3.0_INCLUDEDIR}"
+      "${NL2_INCLUDEDIR}"
+    PATHS
+      $(SEARCHPATHS)
+  )
+  # NL version >= 2
+  if(NL3_INCLUDE_DIR)
+    find_library(NL3_LIBRARY
+      NAMES
+        nl-3 nl
+      PATH_SUFFIXES
+        lib64 lib
+      HINTS
+        "${NL3_libnl-3.0_LIBDIR}"
+        "${NL2_LIBDIR}"
+      PATHS
+        $(SEARCHPATHS)
+    )
+    find_library(NLGENL_LIBRARY
+      NAMES
+        nl-genl-3 nl-genl
+      PATH_SUFFIXES
+        lib64 lib
+      HINTS
+        "${NL3_libnl-genl-3.0_LIBDIR}"
+        "${NL2_LIBDIR}"
+      PATHS
+        $(SEARCHPATHS)
+    )
+    find_library(NLROUTE_LIBRARY
+      NAMES
+        nl-route-3 nl-route
+      PATH_SUFFIXES
+        lib64 lib
+      HINTS
+        "${NL3_libnl-route-3.0_LIBDIR}"
+        "${NL2_LIBDIR}"
+      PATHS
+        $(SEARCHPATHS)
+    )
+    #
+    # If we don't have all of those libraries, we can't use libnl.
+    #
+    if(NL3_LIBRARY AND NLGENL_LIBRARY AND NLROUTE_LIBRARY)
+      set(NL_LIBRARY ${NL3_LIBRARY})
+      if(NL3_INCLUDE_DIR)
+        # NL2 and NL3 are similar and just affect how the version is reported in
+        # the --version output. In cast of doubt, assume NL3 since a library
+        # without version number could be any of 2.0, 3.0 or 3.1.
+        if(NOT NL3_FOUND AND NL2_FOUND)
+          set(HAVE_LIBNL2 1)
+        else()
+          set(HAVE_LIBNL3 1)
+        endif()
+      endif()
+    endif()
+    set(NL_INCLUDE_DIR ${NL3_INCLUDE_DIR})
+  endif()
+
+  # libnl-2 and libnl-3 not found, try NL version 1
+  if(NOT (NL_LIBRARY AND NL_INCLUDE_DIR))
+    pkg_search_module(NL1 libnl-1)
+    find_path(NL1_INCLUDE_DIR
+      NAMES
+        netlink/netlink.h
+      HINTS
+        "${NL1_INCLUDEDIR}"
+      PATHS
+        $(SEARCHPATHS)
+    )
+    find_library(NL1_LIBRARY
+      NAMES
+        nl
+      PATH_SUFFIXES
+        lib64 lib
+      HINTS
+        "${NL1_LIBDIR}"
+      PATHS
+        $(SEARCHPATHS)
+    )
+    set(NL_LIBRARY ${NL1_LIBRARY})
+    set(NL_INCLUDE_DIR ${NL1_INCLUDE_DIR})
+    if(NL1_LIBRARY AND NL1_INCLUDE_DIR)
+      set(HAVE_LIBNL1 1)
+    endif()
+  endif()
+endif()
+# MESSAGE(STATUS "LIB Found: ${NL_LIBRARY}, Suffix: ${NLSUFFIX}\n  1:${HAVE_LIBNL1}, 2:${HAVE_LIBNL2}, 3:${HAVE_LIBNL3}.")
+
+# handle the QUIETLY and REQUIRED arguments and set NL_FOUND to TRUE if
+# all listed variables are TRUE
+INCLUDE(FindPackageHandleStandardArgs)
+FIND_PACKAGE_HANDLE_STANDARD_ARGS(NL DEFAULT_MSG NL_LIBRARY NL_INCLUDE_DIR)
+
+IF(NL_FOUND)
+  set(NL_LIBRARIES ${NLGENL_LIBRARY} ${NLROUTE_LIBRARY} ${NL_LIBRARY})
+  set(NL_INCLUDE_DIRS ${NL_INCLUDE_DIR})
+  set(HAVE_LIBNL 1)
+else()
+  set(NL_LIBRARIES )
+  set(NL_INCLUDE_DIRS)
+endif()
+
+MARK_AS_ADVANCED( NL_LIBRARIES NL_INCLUDE_DIRS )
+
-- 
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