File 0001-Link-nggui-to-FFMPEG-und-JPEG-libraries-when-needed.patch of Package netgen

From a1ca414a629699d09c690c5b3d92081d82e23095 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Stefan=20Br=C3=BCns?= <stefan.bruens@rwth-aachen.de>
Date: Wed, 6 Jul 2022 19:36:01 +0200
Subject: [PATCH] Link nggui to FFMPEG und JPEG libraries when needed

The nggui library calls functions from libav (ffmpeg) and libjpeg,
and thus should link to it.

Build fails otherwise when "-Wl,--no-undefined" is set.
---
 CMakeLists.txt | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index caca0bfc..e1276ab4 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -427,6 +427,9 @@ if (USE_JPEG)
     find_package(JPEG REQUIRED)
     add_definitions(-DJPEGLIB)
     include_directories(${JPEG_INCLUDE_DIR})
+    if(USE_GUI)
+        target_link_libraries(netgen_gui INTERFACE ${JPEG_LIBRARIES})
+    endif()
 endif (USE_JPEG)
 
 #######################################################################
@@ -434,6 +437,9 @@ if (USE_MPEG)
     find_package(FFMPEG REQUIRED)
     add_definitions(-DFFMPEG -D__STDC_CONSTANT_MACROS)
     include_directories(${FFMPEG_INCLUDE_DIR})
+    if(USE_GUI)
+        target_link_libraries(netgen_gui INTERFACE ${FFMPEG_LIBRARIES})
+    endif()
 endif (USE_MPEG)
 
 #######################################################################
-- 
2.36.1