File nlopt-cmake-3.13.patch of Package nlopt

From 8b3cb5a3c2d76f7f0d6447616ed4df1c9f7cd061 Mon Sep 17 00:00:00 2001
From: Julien Schueller <schueller@phimeca.com>
Date: Tue, 8 Jan 2019 10:05:39 +0100
Subject: [PATCH] CMake: Fix compilation with CMake>=3.13

---
 CMakeLists.txt          | 4 ++++
 src/swig/CMakeLists.txt | 5 ++++-
 2 files changed, 8 insertions(+), 1 deletion(-)

Index: nlopt-2.5.0/CMakeLists.txt
===================================================================
--- nlopt-2.5.0.orig/CMakeLists.txt
+++ nlopt-2.5.0/CMakeLists.txt
@@ -77,6 +77,10 @@ if(POLICY CMP0042)
   # Set MACOSX_RPATH to ON
   cmake_policy(SET CMP0042 NEW)
 endif()
+if (POLICY CMP0086)
+  # UseSWIG honors SWIG_MODULE_NAME via -module flag
+  cmake_policy(SET CMP0086 NEW)
+endif ()
 
 include (CheckIncludeFiles)
 include (CheckFunctionExists)
Index: nlopt-2.5.0/src/swig/CMakeLists.txt
===================================================================
--- nlopt-2.5.0.orig/src/swig/CMakeLists.txt
+++ nlopt-2.5.0/src/swig/CMakeLists.txt
@@ -31,7 +31,10 @@ if (NUMPY_FOUND AND PYTHONLIBS_FOUND)
     swig_link_libraries (nlopt ${PYTHON_LIBRARIES})
   endif ()
 
-  set_target_properties (${SWIG_MODULE_nlopt_REAL_NAME} PROPERTIES OUTPUT_NAME _nlopt)
+  set_target_properties (${SWIG_MODULE_nlopt_REAL_NAME} PROPERTIES OUTPUT_NAME nlopt)
+  if (CMAKE_VERSION VERSION_LESS 3.13)
+    set_target_properties (${SWIG_MODULE_nlopt_REAL_NAME} PROPERTIES PREFIX "_")
+  endif ()
 
   install (FILES ${CMAKE_CURRENT_BINARY_DIR}/nlopt.py DESTINATION ${INSTALL_PYTHON_DIR})
   install (TARGETS ${SWIG_MODULE_nlopt_REAL_NAME} LIBRARY DESTINATION ${INSTALL_PYTHON_DIR})