From 01b0ae5d81f683e5f0149cfd6de9e020ec1b827f Mon Sep 17 00:00:00 2001
From: mosfet80 <realeandrea@yahoo.it>
Date: Mon, 1 Apr 2024 17:47:19 +0200
Subject: [PATCH] Clean FindEigen3.cmake (#12632)

---
 cMake/FindEigen3.cmake | 26 +++++---------------------
 1 file changed, 5 insertions(+), 21 deletions(-)

diff --git a/cMake/FindEigen3.cmake b/cMake/FindEigen3.cmake
index 9bf76eba07..eda8143186 100644
--- a/cMake/FindEigen3.cmake
+++ b/cMake/FindEigen3.cmake
@@ -16,16 +16,9 @@
 # Redistribution and use is allowed according to the terms of the 2-clause BSD license.
 
 if(NOT Eigen3_FIND_VERSION)
-  if(NOT Eigen3_FIND_VERSION_MAJOR)
-    set(Eigen3_FIND_VERSION_MAJOR 3)
-  endif(NOT Eigen3_FIND_VERSION_MAJOR)
-  if(NOT Eigen3_FIND_VERSION_MINOR)
-    set(Eigen3_FIND_VERSION_MINOR 0)
-  endif(NOT Eigen3_FIND_VERSION_MINOR)
-  if(NOT Eigen3_FIND_VERSION_PATCH)
-    set(Eigen3_FIND_VERSION_PATCH 0)
-  endif(NOT Eigen3_FIND_VERSION_PATCH)
-
+  set(Eigen3_FIND_VERSION_MAJOR 3)
+  set(Eigen3_FIND_VERSION_MINOR 0)
+  set(Eigen3_FIND_VERSION_PATCH 0)
   set(Eigen3_FIND_VERSION "${Eigen3_FIND_VERSION_MAJOR}.${Eigen3_FIND_VERSION_MINOR}.${Eigen3_FIND_VERSION_PATCH}")
 endif(NOT Eigen3_FIND_VERSION)
 
@@ -42,23 +35,17 @@ macro(_eigen3_check_version)
   set(EIGEN3_VERSION ${EIGEN3_WORLD_VERSION}.${EIGEN3_MAJOR_VERSION}.${EIGEN3_MINOR_VERSION})
   if(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION})
     set(EIGEN3_VERSION_OK FALSE)
+    message(STATUS "Eigen3 version ${EIGEN3_VERSION} found in ${EIGEN3_INCLUDE_DIR}, "
+                   "but at least version ${Eigen3_FIND_VERSION} is required")
   else(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION})
     set(EIGEN3_VERSION_OK TRUE)
   endif(${EIGEN3_VERSION} VERSION_LESS ${Eigen3_FIND_VERSION})
-
-  if(NOT EIGEN3_VERSION_OK)
-
-    message(STATUS "Eigen3 version ${EIGEN3_VERSION} found in ${EIGEN3_INCLUDE_DIR}, "
-                   "but at least version ${Eigen3_FIND_VERSION} is required")
-  endif(NOT EIGEN3_VERSION_OK)
 endmacro(_eigen3_check_version)
 
 if (EIGEN3_INCLUDE_DIR)
-
   # in cache already
   _eigen3_check_version()
   set(EIGEN3_FOUND ${EIGEN3_VERSION_OK})
-
 else (EIGEN3_INCLUDE_DIR)
 
   find_path(EIGEN3_INCLUDE_DIR NAMES signature_of_eigen3_matrix_library
@@ -71,11 +58,8 @@ else (EIGEN3_INCLUDE_DIR)
   if(EIGEN3_INCLUDE_DIR)
     _eigen3_check_version()
   endif(EIGEN3_INCLUDE_DIR)
-
   include(FindPackageHandleStandardArgs)
   find_package_handle_standard_args(Eigen3 REQUIRED_VARS EIGEN3_INCLUDE_DIR EIGEN3_VERSION_OK VERSION_VAR EIGEN3_VERSION)
-
   mark_as_advanced(EIGEN3_INCLUDE_DIR)
 
 endif(EIGEN3_INCLUDE_DIR)
-