So that when we use:
make -C tools/perf build-test
One of the entries will ask for building with GTK+ 2.
Cc: Adrian Hunter <adrian.hunter@intel.com>
Cc: Ian Rogers <irogers@google.com>
Cc: Jiri Olsa <jolsa@kernel.org>
Cc: Namhyung Kim <namhyung@kernel.org>
Signed-off-by: Arnaldo Carvalho de Melo <acme@redhat.com>
make_no_syscall_tbl := NO_SYSCALL_TABLE=1
make_with_clangllvm := LIBCLANGLLVM=1
make_with_libpfm4 := LIBPFM4=1
+make_with_gtk2 := GTK2=1
make_tags := tags
make_cscope := cscope
make_help := help
run += make_with_babeltrace
run += make_with_clangllvm
run += make_with_libpfm4
+run += make_with_gtk2
run += make_help
run += make_doc
run += make_perf_o