Force use of our wxWidgets and fix RPATH handling

cmake-proxies/cmake-modules/CopyLibs.cmake

@@ -0,0 +1,110 @@
+# Copy library during build and, on the Mac, modify the dependent
+# library paths.
+#
+# Defines required:
+#
+# SRC    source library name
+# DST    destination directory
+#
+message( "==================================================================" )
+message( "Copying wxWidgets libraries:" )
+message( "${SRC} ${DST}" )
+message( "==================================================================" )
+
+# list command no longer ignores empty elements.
+cmake_policy( SET CMP0007 NEW )
+
+function( execute )
+   list( POP_FRONT ARGV outlist )
+
+   execute_process(
+      COMMAND
+         ${ARGV}
+      OUTPUT_VARIABLE
+         cmd_out
+#      COMMAND_ECHO STDOUT
+      OUTPUT_STRIP_TRAILING_WHITESPACE
+   )
+
+#message("OUTPUT\n${cmd_out}")
+
+   # Convert output to list and strip
+   string( REPLACE "\n" ";" cmd_out "${cmd_out}" )
+   list( TRANSFORM cmd_out STRIP )
+
+   set( ${outlist} ${cmd_out} PARENT_SCOPE )
+endfunction()
+
+function( gather_libs src )
+   if( CMAKE_HOST_SYSTEM_NAME MATCHES "Windows" )
+      execute( output cmd /k dumpbin /dependents ${src} )
+
+      foreach( line ${output} )
+         if( line MATCHES "^ *wx.*\\.dll" )
+            set( lib ${WXWIN}/${line} )
+
+            list( APPEND libs ${lib} )
+
+            gather_libs( ${lib} )
+         endif()
+      endforeach()
+   elseif( CMAKE_HOST_SYSTEM_NAME MATCHES "Darwin" )
+      execute( output otool -L ${src} )
+
+      get_filename_component( libname "${src}" NAME )
+
+      if( libname MATCHES ".*dylib" )
+         string( PREPEND libname "${DST}/" )
+      else()
+         set( libname "${src}" )
+      endif()
+
+      foreach( line ${output} )
+         if( line MATCHES "^.*libwx.*\\.dylib " )
+            string( REGEX REPLACE "dylib .*" "dylib" line "${line}" )
+            if( NOT line STREQUAL "${src}" )
+               set( lib ${line} )
+
+               list( APPEND libs ${lib} )
+
+               get_filename_component( refname "${lib}" NAME )
+               list( APPEND postcmds "sh -c 'install_name_tool -change ${lib} @executable_path/../Frameworks/${refname} ${libname}'" )
+
+               gather_libs( ${lib} )
+            endif()
+         endif()
+      endforeach()
+   elseif( CMAKE_HOST_SYSTEM_NAME MATCHES "Linux" )
+      execute( output ldd ${src} )
+
+      foreach( line ${output} )
+         if( line MATCHES ".*libwx.*" )
+            string( REGEX REPLACE ".* => (.*) \\(.*$" "\\1" line "${line}" )
+
+            set( lib ${line} )
+
+            list( APPEND libs ${lib} )
+
+            gather_libs( ${lib} )
+         endif()
+      endforeach()
+   endif()
+
+   set( libs ${libs} PARENT_SCOPE )
+   set( postcmds ${postcmds} PARENT_SCOPE )
+endfunction()
+
+gather_libs( "${SRC}" )
+
+list( REMOVE_DUPLICATES libs )
+
+file( INSTALL ${libs} DESTINATION ${DST} FOLLOW_SYMLINK_CHAIN )
+
+foreach( cmd ${postcmds} )
+   execute_process(
+      COMMAND
+         sh -c "${cmd}"
+      COMMAND_ECHO STDOUT
+   )
+endforeach()
+