SLAM在运行中的问题
问题一：安装gtest参考官方的安装文档
To build GoogleTest and your tests that use it, you need to tell your build
system where to find its headers and source files. The exact way to do it
depends on which build system you use, and is usually straightforward.
GoogleTest comes with a CMake build script
(CMakeLists.txt)
that can be used on a wide range of platforms (“C” stands for cross-platform.).
If you don’t have CMake installed already, you can download it for free from
http://www.cmake.org/.
CMake works by generating native makefiles or build projects that can be used in
the compiler environment of your choice. You can either build GoogleTest as a
standalone project or it can be incorporated into an existing CMake build for
another project.
When building GoogleTest as a standalone project, the typical workflow starts
with
git clone https://github.com/google/googletest.git -b release-1.11.0
cd googletest # Main directory of the cloned repository.
mkdir build # Create a directory to hold the build output.
cd build
cmake .. # Generate native build scripts for GoogleTest.
The above command also includes GoogleMock by default. And so, if you want to
build only GoogleTest, you should replace the last command with
cmake .. -DBUILD_GMOCK=OFF
If you are on a *nix system, you should now see a Makefile in the current
directory. Just type make to build GoogleTest. And then you can simply install
GoogleTest if you are a system administrator.
make
sudo make install # Install in /usr/local/ by default
If you use Windows and have Visual Studio installed, a gtest.sln file and
several .vcproj files will be created. You can then build them using Visual
Studio.
On Mac OS X with Xcode installed, a .xcodeproj file will be generated.
If you want to use GoogleTest in a project which already uses CMake, the easiest
way is to get installed libraries and headers.
find_package (or pkg_check_modules). Forfind_package(GTest CONFIG REQUIRED) succeeds, you can use theGTest::gtest, GTest::gmock.And a more robust and flexible approach is to build GoogleTest as part of that
project directly. This is done by making the GoogleTest source code available to
the main build and adding it using CMake’s add_subdirectory() command. This
has the significant advantage that the same compiler and linker settings are
used between GoogleTest and the rest of your project, so issues associated with
using incompatible libraries (eg debug/release), etc. are avoided. This is
particularly useful on Windows. Making GoogleTest’s source code available to the
main build can be done a few different ways:
The last of the above methods is implemented with a small piece of CMake code
that downloads and pulls the GoogleTest code into the main build.
Just add to your CMakeLists.txt:
include(FetchContent)
FetchContent_Declare(
googletest
# Specify the commit you depend on and update it regularly.
URL https://github.com/google/googletest/archive/e2239ee6043f73722e7aa812a459f54a28552929.zip
)
# For Windows: Prevent overriding the parent project's compiler/linker settings
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)
# Now simply link against gtest or gtest_main as needed. Eg
add_executable(example example.cpp)
target_link_libraries(example gtest_main)
add_test(NAME example_test COMMAND example)
Note that this approach requires CMake 3.14 or later due to its use of the
FetchContent_MakeAvailable() command.
By default, new Visual Studio projects link the C runtimes dynamically but
GoogleTest links them statically. This will generate an error that looks
something like the following: gtest.lib(gtest-all.obj) : error LNK2038: mismatch
detected for ‘RuntimeLibrary’: value ‘MTd_StaticDebug’ doesn’t match value
‘MDd_DynamicDebug’ in main.obj
GoogleTest already has a CMake option for this: gtest_force_shared_crt
Enabling this option will make gtest link the runtimes dynamically too, and
match the project in which it is included.
An environment that supports C++11 is required in order to successfully build
GoogleTest. One way to ensure this is to specify the standard in the top-level
project, for example by using the set(CMAKE_CXX_STANDARD 11) command. If this
is not feasible, for example in a C project using GoogleTest for validation,
then it can be specified by adding it to the options for cmake via the
DCMAKE_CXX_FLAGS option.
GoogleTest can be used in diverse environments. The default configuration may
not work (or may not work well) out of the box in some environments. However,
you can easily tweak GoogleTest by defining control macros on the compiler
command line. Generally, these macros are named like GTEST_XYZ and you define
them to either 1 or 0 to enable or disable a certain feature.
We list the most frequently used macros below. For a complete list, see file
include/gtest/internal/gtest-port.h.
GoogleTest is thread-safe where the pthread library is available. After
#include "gtest/gtest.h", you can check the
GTEST_IS_THREADSAFE macro to see whether this is the case (yes if the macro is
#defined to 1, no if it’s undefined.).
If GoogleTest doesn’t correctly detect whether pthread is available in your
environment, you can force it with
-DGTEST_HAS_PTHREAD=1
or
-DGTEST_HAS_PTHREAD=0
When GoogleTest uses pthread, you may need to add flags to your compiler and/or
linker to select the pthread library, or you’ll get link errors. If you use the
CMake script, this is taken care of for you. If you use your own build script,
you’ll need to read your compiler and linker’s manual to figure out what flags
to add.
GoogleTest is compact, so most users can build and link it as a static library
for the simplicity. You can choose to use GoogleTest as a shared library (known
as a DLL on Windows) if you prefer.
To compile gtest as a shared library, add
-DGTEST_CREATE_SHARED_LIBRARY=1
to the compiler flags. You’ll also need to tell the linker to produce a shared
library instead - consult your linker’s manual for how to do it.
To compile your tests that use the gtest shared library, add
-DGTEST_LINKED_AS_SHARED_LIBRARY=1
to the compiler flags.
Note: while the above steps aren’t technically necessary today when using some
compilers (e.g. GCC), they may become necessary in the future, if we decide to
improve the speed of loading the library (see
http://gcc.gnu.org/wiki/Visibility for details). Therefore you are recommended
to always add the above flags when using GoogleTest as a shared library.
Otherwise a future release of GoogleTest may break your build script.
In C++, macros don’t obey namespaces. Therefore two libraries that both define a
macro of the same name will clash if you #include both definitions. In case a
GoogleTest macro clashes with another library, you can force GoogleTest to
rename its macro to avoid the conflict.
Specifically, if both GoogleTest and some other code define macro FOO, you can
add
-DGTEST_DONT_DEFINE_FOO=1
to the compiler flags to tell GoogleTest to change the macro’s name from FOO
to GTEST_FOO. Currently FOO can be ASSERT_EQ, ASSERT_FALSE, ASSERT_GE,
ASSERT_GT, ASSERT_LE, ASSERT_LT, ASSERT_NE, ASSERT_TRUE,
EXPECT_FALSE, EXPECT_TRUE, FAIL, SUCCEED, TEST, or TEST_F. For
example, with -DGTEST_DONT_DEFINE_TEST=1, you’ll need to write
GTEST_TEST(SomeTest, DoesThis) { ... }
instead of
TEST(SomeTest, DoesThis) { ... }
in order to define a test.
问题二：解决CSprase的问题
问题：
The package name passed to
find_package_handle_standard_args(CSPARSE)
does not match the name of the calling package (CSparse).The package name passed to
find_package_handle_standard_args
(CSPARSE) does not match the name of the calling package (CSparse).
This can lead to problems in calling code that expects
find_packageresult variables (e.g.,_FOUND) to follow a certain
pattern.
解决方法：
只需要，把cmake_modules文件夹下FindCSparse.cmake文件中的最后一行：
find_package_handle_standard_args(CSPARSE DEFAULT_MSG
CSPARSE_INCLUDE_DIR CSPARSE_LIBRARY)
修改为：
find_package_handle_standard_args(CSparse DEFAULT_MSG
CSPARSE_INCLUDE_DIR CSPARSE_LIBRARY)