谷歌测试缺少DSO(google testing missing DSO)

谷歌测试缺少DSO(google testing missing DSO)

我正在学习谷歌测试。 我下载了gtest，运行了命令./configure并make并结束了

$ sudo cp -a include/gtest /usr/include $ sudo cp -a lib/.libs/* /usr/lib/

我从这里得到了这一切。 我试着运行这段代码

#include <gtest/gtest.h> TEST(MathTest, TwoPlusTwoEqualsFour) { EXPECT_EQ(2 + 2, 4); } int main(int argc, char **argv) { ::testing::InitGoogleTest( &argc, argv ); return RUN_ALL_TESTS(); }

喜欢这个

$ export GTEST_HOME=~/usr/gtest $ export LD_LIBRARY_PATH=$GTEST_HOME/lib:$LD_LIBRARY_PATH $ g++ -I $GTEST_HOME/include -L $GTEST_HOME/lib -lgtest -lgtest_main -lpthread test.cpp

但是我收到了一个错误

/usr/bin/ld: /tmp/ccVTj3Rk.o: undefined reference to symbol '_ZN7testing8internal9EqFailureEPKcS2_RKSsS4_b' /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libgtest.so: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status

我做错了什么或者它是一个错误？

I'm learning to google test. I downloaded gtest, ran commands ./configure and make and ended with

$ sudo cp -a include/gtest /usr/include $ sudo cp -a lib/.libs/* /usr/lib/

i got all this from here. I tried to run this code

#include <gtest/gtest.h> TEST(MathTest, TwoPlusTwoEqualsFour) { EXPECT_EQ(2 + 2, 4); } int main(int argc, char **argv) { ::testing::InitGoogleTest( &argc, argv ); return RUN_ALL_TESTS(); }

like this

$ export GTEST_HOME=~/usr/gtest $ export LD_LIBRARY_PATH=$GTEST_HOME/lib:$LD_LIBRARY_PATH $ g++ -I $GTEST_HOME/include -L $GTEST_HOME/lib -lgtest -lgtest_main -lpthread test.cpp

but i received an error

/usr/bin/ld: /tmp/ccVTj3Rk.o: undefined reference to symbol '_ZN7testing8internal9EqFailureEPKcS2_RKSsS4_b' /usr/lib/gcc/x86_64-linux-gnu/4.8/../../../../lib/libgtest.so: error adding symbols: DSO missing from command line collect2: error: ld returned 1 exit status

Am i doing something wrong or is it a bug?

最满意答案

您的设置中存在一些错误。

您将include / gtest复制到/ usr / include （ sudo cp -a include/gtest /usr/include ），但是当您尝试编译时，告诉编译器在〜/ usr / gtest目录中查找gtest头，不在你之前设置的目录中（ / usr / include / gtest ）。 使用lib / .libs / *文件发生了同样的事情。 你在一个地方复制它们，在编译时你在另一个地方要求它们。

保持以下配置：

$ sudo cp -a include/gtest /usr/include $ sudo cp -a lib/.libs/* /usr/lib/

将#include <gtest/gtest.h>更改为#include "gtest/gtest.h"并尝试编译如下：

g++ -g -Wall <your .cpp files> -I /usr/include/gtest/ -L /usr/lib/ -lgtest -lgtest_main -lpthread

在运行./a.out文件（或您为可执行文件指定的任何名称）后，您应该看到以下输出

[==========] Running 1 test from 1 test case. [----------] Global test environment set-up. [----------] 1 test from MathTest [ RUN ] MathTest.TwoPlusTwoEqualsFour [ OK ] MathTest.TwoPlusTwoEqualsFour (0 ms) [----------] 1 test from MathTest (0 ms total) [----------] Global test environment tear-down [==========] 1 test from 1 test case ran. (0 ms total) [ PASSED ] 1 test.

There are some errors in your setup.

You copied your include/gtest into /usr/include (sudo cp -a include/gtest /usr/include), but when you try to compile you tell the compiler to look for the gtest headers in the ~/usr/gtest directory, not in the directory you set up before (/usr/include/gtest). The same things happed with the lib/.libs/* files. You copy them in a place and at compile time you ask for them in another place.

Keeping the following configurations:

$ sudo cp -a include/gtest /usr/include $ sudo cp -a lib/.libs/* /usr/lib/

change #include <gtest/gtest.h> into #include "gtest/gtest.h" and try to compile like this:

g++ -g -Wall <your .cpp files> -I /usr/include/gtest/ -L /usr/lib/ -lgtest -lgtest_main -lpthread

And you should see the following output after running the ./a.out file (or whatever name you assign to the executable file)

[==========] Running 1 test from 1 test case. [----------] Global test environment set-up. [----------] 1 test from MathTest [ RUN ] MathTest.TwoPlusTwoEqualsFour [ OK ] MathTest.TwoPlusTwoEqualsFour (0 ms) [----------] 1 test from MathTest (0 ms total) [----------] Global test environment tear-down [==========] 1 test from 1 test case ran. (0 ms total) [ PASSED ] 1 test.