Linking errors GoogleMock with my C++project under linux - c++

Question

I want to use GMock in my project. First of all I compiled GMock and GTest. The sequence of my actions (I use Linux):
git clone googlemock and googletest
go to GIT/googletest/googlemock/build-aux/ directory run cmake ..
and then make
As the result I got: libgmock.a and libgmock_main.a
My project has the structure: build, inc, src and lib directories. In build directory I run cmake .. and make. In inc dir I placed all headers from GIT/googletest/googlemock/include/ and GIT/googletest/googletest/include/. In lib dir lays libgmock.a only. In src - sources of my project.
My CMakeLists.txt contains:
project(blockchain)
cmake_minimum_required(VERSION 2.6)
set(CMAKE_INSTALL_PREFIX ${CMAKE_CURRENT_SOURCE_DIR})
file(GLOB CPPS "*.cpp")
include_directories("../inc/")
link_directories("../lib/")
add_definitions(-Wall -O2 -std=c++11)
add_executable(${PROJECT_NAME} ${CPPS})
target_link_libraries(blockchain gmock)
install(TARGETS ${PROJECT_NAME} DESTINATION bin)
When I try to make my project (typing cmake .. && make in build dir) I get linking errors:
CMakeFiles/blockchain.dir/main.cpp.o: In function main':
main.cpp:(.text.startup+0x13): undefined reference
totesting::UnitTest::GetInstance()'
main.cpp:(.text.startup+0x1b): undefined reference to testing::UnitTest::Run()' ../lib/libgmock.a(gmock-all.cc.o): In
functiontesting::internal::scoped_ptr
::reset(std::__cxx11::basic_stringstream) [clone .part.81] [clone .constprop.367]':
gmock-all.cc:(.text+0x21a): undefined reference to testing::internal::IsTrue(bool)' ../lib/libgmock.a(gmock-all.cc.o): In
functiontesting::internal::MutexBase::AssertHeld() const [clone
.constprop.368]':
gmock-all.cc:(.text+0x274): undefined reference to testing::internal::IsTrue(bool)' gmock-all.cc:(.text+0x2b2): undefined
reference
totesting::internal::GTestLog::GTestLog(testing::internal::GTestLogSeverity,
char const, int)'
gmock-all.cc:(.text+0x2fd): undefined reference to testing::internal::GTestLog::~GTestLog()' gmock-all.cc:(.text+0x312):
undefined reference totesting::internal::GTestLog::~GTestLog()'
../lib/libgmock.a(gmock-all.cc.o): In function testing::internal::Expect(bool, char const*, int,
std::__cxx11::basic_string,
std::allocator > const&) [clone .part.51]':
gmock-all.cc:(.text+0x910): undefined reference
totesting::Message::Message()'
gmock-all.cc:(.text+0x926): undefined reference to testing::internal::AssertHelper::AssertHelper(testing::TestPartResult::Type,
char const*, int, char const*)' gmock-all.cc:(.text+0x931): undefined
reference
totesting::internal::AssertHelper::operator=(testing::Message const&)
const'
gmock-all.cc:(.text+0x939): undefined reference to testing::internal::AssertHelper::~AssertHelper()'
gmock-all.cc:(.text+0x94b): undefined reference
totesting::internal::IsTrue(bool)'
And a lot of others linking errors. What am I doing wrong?

Answer 1

gmock depends on gtest. You added the former, but not the latter.