Control: tags -1 patch debian/FLTKLibraries-noconfig.cmake.in has nothing to do.
--- fltk1.3-1.3.4.orig/debian/fix-fltk-targets-noconfig 2017-01-23 08:08:32.000000000 +0100 +++ fltk1.3-1.3.4/debian/fix-fltk-targets-noconfig 2017-01-23 08:06:41.000000000 +0100 @@ -3,7 +3,7 @@ my $to_untag = ''; while (<>) { - s,(\${_IMPORT_PREFIX}/lib),$1/$ENV{DEB_HOST_MULTIARCH},g; + s,(\${_IMPORT_PREFIX}/lib)(?!/$ENV{DEB_HOST_MULTIARCH}),$1/$ENV{DEB_HOST_MULTIARCH},g; s,\.so\.1\.3\.\d*,\.so,g; s,([^a-z]fltk\w*(?<!_SHARED))(\W),${1}_STATIC$2,g;
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