Linking Error: testing::internal::InsertSyntheticTestCase(std::string const&, testing::internal::CodeLocation, bool)

[Alok-Ranjan23]

I am able to build my testing code using gtest/gtest.h includes, but facing linking problem. I am getting the following linking issue.

/usr/bin/ld: CMakeFiles/gtests.dir/test_linear.cpp.o: in function testing::internal::ParameterizedTestSuiteInfo::RegisterTests()':
test_linear.cpp:(.text._ZN7testing8internal26ParameterizedTestSuiteInfoI10TestLinearE13RegisterTestsEv[_ZN7testing8internal26ParameterizedTestSuiteInfoI10TestLinearE13RegisterTestsEv]+0xdb3): undefined reference to testing::internal::MakeAndRegisterTestInfo(std::string, char const*, char const*, char const*, testing::internal::CodeLocation, void const*, void (*)(), void (*)(), testing::internal::TestFactoryBase*)' /usr/bin/ld: test_linear.cpp:(.text._ZN7testing8internal26ParameterizedTestSuiteInfoI10TestLinearE13RegisterTestsEv[_ZN7testing8internal26ParameterizedTestSuiteInfoI10TestLinearE13RegisterTestsEv]+0x1aa3): undefined reference to testing::internal::InsertSyntheticTestCase(std::string const&, testing::internal::CodeLocation, bool)'
collect2: error: ld returned 1 exit status`

Before that, I have build googletest/googlemock framework locally.
What can be the problem here? Am I not building the googletest framework properly [i.e. Am I missing some flags before building gtests]?

Please help me here.