From: Jan Engelhardt Date: 2020-04-18 20:10:34.215071041 +0200 external.so references wx functions (including those present in base), but does not link them => add wx libs to the link. [ 12s] /usr/include/wx-3.0/wx/filename.h:139: undefined reference to `wxFileName::Assign(wxString const&, wxPathFormat)' [ 12s] /usr/lib64/gcc/x86_64-suse-linux/9/../../../../x86_64-suse-linux/bin/ld: CMakeFiles/external.dir/email/wxEmailMessage.o: in function `wxEmailMessage::DoAddAttachment(wxString const&, wxString&) const': Furthermore, external.so references MemChunk:: functions, but does not link them => change to STATIC because I am too lazy. --- src/CMakeLists.txt | 2 +- src/External/CMakeLists.txt | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) Index: SLADE-3.1.12/src/CMakeLists.txt =================================================================== --- SLADE-3.1.12.orig/src/CMakeLists.txt +++ SLADE-3.1.12/src/CMakeLists.txt @@ -52,7 +52,7 @@ if (WX_GTK3) set(wxWidgets_CONFIG_OPTIONS --toolkit=gtk3) endif (WX_GTK3) -SET(WX_LIBS std aui gl stc richtext propgrid media) +SET(WX_LIBS base std aui gl stc richtext propgrid media) if (NO_WEBVIEW) SET(WX_LIBS ${WX_LIBS} html) else (NO_WEBVIEW) Index: SLADE-3.1.12/src/External/CMakeLists.txt =================================================================== --- SLADE-3.1.12.orig/src/External/CMakeLists.txt +++ SLADE-3.1.12/src/External/CMakeLists.txt @@ -31,5 +31,5 @@ file(GLOB_RECURSE EXTERNAL_SOURCES ) add_library(external STATIC ${EXTERNAL_SOURCES}) -target_link_libraries(external ${ZLIB_LIBRARY}) +target_link_libraries(external ${ZLIB_LIBRARY} ${wxWidgets_LIBRARIES}) set(EXTERNAL_LIBRARIES external PARENT_SCOPE)