ensmallen, add patchset (#13020)

sci-libs/ensmallen/patches/ensmallen-3.10.0.patchset

@@ -0,0 +1,47 @@
+From 241db9ee452ffff308c642d0a65d0b89ad9d7af5 Mon Sep 17 00:00:00 2001
+From: Luc Schrijvers <begasus@gmail.com>
+Date: Sat, 4 Oct 2025 12:45:20 +0200
+Subject: Use GNUInstallDirs
+
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index dfa4213..5a18f23 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -13,6 +13,7 @@ option(USE_OPENMP "If available, use OpenMP for parallelization." ON)
+ option(USE_BANDICOOT "If available, build against Bandicoot for GPU support." ON)
+ 
+ set(CMAKE_MODULE_PATH ${CMAKE_MODULE_PATH} "${CMAKE_SOURCE_DIR}/CMake")
++include(GNUInstallDirs)
+ 
+ # Set minimum required C++ standard to C++14.
+ if (NOT CMAKE_CXX_STANDARD)
+@@ -81,7 +82,7 @@ target_link_libraries(ensmallen INTERFACE Armadillo::Armadillo)
+ 
+ # Set helper variables for creating the version, config and target files.
+ include(CMakePackageConfigHelpers)
+-set(ENSMALLEN_CMAKE_DIR "lib/cmake/ensmallen" CACHE STRING
++set(ENSMALLEN_CMAKE_DIR "${CMAKE_INSTALL_LIBDIR}/cmake/ensmallen" CACHE STRING
+       "Installation directory for cmake files, relative to ${CMAKE_INSTALL_PREFIX}.")
+ set(VERSION_CONFIG "${PROJECT_BINARY_DIR}/ensmallen-config-version.cmake")
+ set(PROJECT_CONFIG "${PROJECT_BINARY_DIR}/ensmallen-config.cmake")
+@@ -104,13 +105,13 @@ install(EXPORT ${TARGETS_EXPORT_NAME} DESTINATION ${ENSMALLEN_CMAKE_DIR}
+     NAMESPACE ensmallen::)
+ 
+ # Export the targets and install the header files.
+-install(TARGETS ensmallen EXPORT ${TARGETS_EXPORT_NAME} DESTINATION lib)
++install(TARGETS ensmallen EXPORT ${TARGETS_EXPORT_NAME} DESTINATION "${CMAKE_INSTALL_LIBDIR}")
+ install(DIRECTORY "${CMAKE_SOURCE_DIR}/include/ensmallen_bits"
+-        DESTINATION "${CMAKE_INSTALL_PREFIX}/include"
++        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}"
+         PATTERN "*~" EXCLUDE
+         PATTERN "*.sw*" EXCLUDE)
+ install(FILES ${CMAKE_SOURCE_DIR}/include/ensmallen.hpp
+-        DESTINATION "${CMAKE_INSTALL_PREFIX}/include")
++        DESTINATION "${CMAKE_INSTALL_INCLUDEDIR}")
+ 
+ # Enable testing and build tests.
+ enable_testing()
+-- 
+2.50.1
+