test.camke line 16 add_library path error

[CatfishGamer]

original likes follow:
add_library(gmock STATIC
${protobuf_source_dir}/gmock/src/gmock-all.cc
${protobuf_source_dir}/gmock/gtest/src/gtest-all.cc
)

will report an error! cannot find path "src/gtest-all.cc"

fixed:
add_library(gmock STATIC
${protobuf_source_dir}/gmock/src/gmock-all.cc
${protobuf_source_dir}/gmock/test/gmock_all_test.cc
)
will works well in cmake