C++ CMake 在 Ubuntu 中找不到 GoogleTest 所需的库
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CMake cannot find GoogleTest required library in Ubuntu
提问by Erich
Similar issue here.
类似的问题在这里。
This is my CMakeLists.txt:
这是我的 CMakeLists.txt：
cmake_minimum_required(VERSION 2.6)
# Locate GTest
find_package(GTest REQUIRED)
include_directories(${GTEST_INCLUDE_DIRS})
# Add test cpp file
add_executable(foo foo.cpp)
# Link test executable against gtest & gtest_main
target_link_libraries(foo ${GTEST_LIBRARIES} ${GTEST_MAIN_LIBRARIES} pthread)
And my foo.cpp:
还有我的 foo.cpp：
#include <gtest/gtest.h>
TEST(sample_test_case, sample_test)
{
EXPECT_EQ(1, 1);
}
int main(int argc, char **argv)
{
testing::InitGoogleTest(&argc, argv);
return RUN_ALL_TESTS();
}
Now, all works fine when using the g++ compiler. However, when attempting to use QNX's compiler, ntox86-c++, I run into this problem:
现在，使用 g++ 编译器时一切正常。但是，在尝试使用 QNX 的编译器 ntox86-c++ 时，我遇到了这个问题：
CMake Error at /usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake:97 (MESSAGE): Could NOT find GTest (missing: GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY)
/usr/share/cmake-2.8/Modules/FindPackageHandleStandardArgs.cmake 中的 CMake 错误：97（MESSAGE）：找不到 GTest（缺少：GTEST_LIBRARY GTEST_INCLUDE_DIR GTEST_MAIN_LIBRARY）
I am on Ubuntu using the ntox86-c++ compiler, googletest, and cmake-gui.
我在 Ubuntu 上使用 ntox86-c++ 编译器、googletest 和 cmake-gui。
What gives?
是什么赋予了？
回答by detrick
Google test was probably not properly installed (libgtest-devmay install only source files that needed to be compiled). I had the same problem and I followed the instructions from http://www.eriksmistad.no/getting-started-with-google-test-on-ubuntu/
Google test 可能没有正确安装（libgtest-dev可能只安装需要编译的源文件）。我遇到了同样的问题，我按照http://www.eriksmistad.no/getting-started-with-google-test-on-ubuntu/ 中的说明进行操作
sudo apt-get install libgtest-dev
sudo apt-get install cmake # install cmake
cd /usr/src/gtest
sudo cmake CMakeLists.txt
sudo make
#copy or symlink libgtest.a and libgtest_main.a to your /usr/lib folder
sudo cp *.a /usr/lib
This worked for me.
这对我有用。
回答by mrts
As explained by @detrick, the Ubuntu package libgtest-devonly installs sources, so you need to build and install the libraries yourself.
正如@detrick 所解释的，Ubuntu 包libgtest-dev只安装源代码，因此您需要自己构建和安装库。
However, there is a much simpler way for building and installing since Ubuntu 18.04 than the manual commands in other answers:
但是，从 Ubuntu 18.04 开始，有一种比其他答案中的手动命令更简单的构建和安装方法：
sudo apt install libgtest-dev build-essential cmake
cd /usr/src/googletest
sudo cmake .
sudo cmake --build . --target install
回答by Arturo Ruiz Ma?as
Some time ago I created a dockerfile and it helps me to keep a kind of recipe for installing later on google test on my systems:
前段时间我创建了一个 dockerfile，它可以帮助我保留一种方法，以便稍后在我的系统上进行 google test 安装：
apt-get install -y git g++ make cmake
git clone https://github.com/google/googletest.git
cd googletest
mkdir gbuild && cd gbuild && cmake .. && make
cp -r googletest/include/gtest /usr/local/include
cp gbuild/googlemock/gtest/lib*.a /usr/local/lib
cp gbuild/googlemock/lib*.a /usr/local/lib
I hope it helps :)
我希望它有帮助:)
