I am following ROS–Unity Integration tutorial for ROS2. I coppied unity_robotics_demo and unity_robotics_demo_msgs to my src folder from here. When building unity_robotics_demo_msgs gives me an error. I did source install/setup.bash and colcon build. Error:
CMake Error at CMakeLists.txt:7 (find_package):
By not providing "Findrosidl_default_generators.cmake" in CMAKE_MODULE_PATH
this project has asked CMake to find a package configuration file provided
by "rosidl_default_generators", but CMake did not find one.
Could not find a package configuration file provided by
"rosidl_default_generators" with any of the following names:
rosidl_default_generatorsConfig.cmake
rosidl_default_generators-config.cmake
Add the installation prefix of "rosidl_default_generators" to
CMAKE_PREFIX_PATH or set "rosidl_default_generators_DIR" to a directory
containing one of the above files. If "rosidl_default_generators" provides
a separate development package or SDK, be sure it has been installed.
I am not sure how to add the installation prefix. In foxy/share there is rosidl_default_generators:
Related
I got a following problem. We have a very silly git structure and guidelines, so my eclipse projects use linked files. I have to make google tests for the projects, and the only way I found it to work is to use cmake. However, the test files are not in workspace but in a git repository and only linked to eclipse project. I cant figure out how to make CMakeLists.txt to follow the files.... I tried using include_directories with either relative or absolute paths..
Errors I get:
mingw32-make.exe[2]: *** No rule to make target 'C:/Users/name/eclipse-
workspace/MyTestCmake/Solver_test.cpp', needed by 'CMakeFiles/Solver_test.dir/Solver_test.cpp.obj'. Stop.
mingw32-make.exe[1]: *** [CMakeFiles\Makefile2:164: CMakeFiles/Solver_test.dir/all] Error 2
mingw32-make.exe: *** [Makefile:145: all] Error 2
Another question is - one of the libraries is built without cmake. How can I specify the path to it, where the cmake should find it?
Current Cmakelists.txt:
cmake_minimum_required(VERSION 3.14)
project (RadiTestCmake)
include(FetchContent)
FetchContent_Declare(googletest GIT_REPOSITORY https://github.com/google/googletest.git GIT_TAG release-1.12.1 )
# For Windows: Prevent overriding the parent project's compiler/linker settings
set(gtest_force_shared_crt ON CACHE BOOL "" FORCE)
FetchContent_MakeAvailable(googletest)
enable_testing()
include_directories(
"${PROJECT_BINARY_DIR}"
"${PROJECT_BINARY_DIR}/../../../../../../gitlocal/backend/tests/"
)
add_executable(
hello_test
hello_test.cc
Solver_test.cpp
)
target_link_libraries(
hello_test
GTest::gtest_main
)
include(GoogleTest)
gtest_discover_tests(hello_test)
I am having trouble installing a module I created in Julia. I am running the Julia plugin under Visual Studio Code. If I run the file below with Ctrl+F5 I get a message
ERROR: LoadError: ArgumentError: Package Utils not found in current path:
- Run `import Pkg; Pkg.add("Utils")` to install the Utils package.
This is the file:
module demo
using Utils
greet() = print("Hello World!")
end # module
If I follow the advice on the error message I get another error message:
ERROR: LoadError: The following package names could not be resolved:
* Utils (not found in project, manifest or registry)
I also tried inserting this line:
import Pkg; Pkg.add(path="C:/Dropbox/Code/Julia/demo/src/Utils.jl")
and got this message (although the path definitely exists):
ERROR: LoadError: Path `C:/Dropbox/Code/Julia/demo/src/Utils.jl` does not exist.
The files demo.jl and Utils.jl are in C:\Dropbox\Code\Julia\demo\src\ and the demo project has been activated as can be seen in the REPL. The OS is Windows 10 Pro.
Any help will be greatly appreciated. Lots of time wasted trying to make this work.
Module and packages are not the same things. In short, packages are modules plus a set of metadata that make it easy for the package to be found and interact well with other packages. See here for a tutorial to write Julia packages:
https://syl1.gitbook.io/julia-language-a-concise-tutorial/language-core/11-developing-julia-packages
In your case, if you want to load a local module, just type include("fileWhereThereIsTheModule.jl") followed by a using Main.MyModule or using .MyModule. Note the dot... without it, Julia would indeed look for a package and to let it find your Demo or Util module you would have to either change an environmental variable or place your module file in certain predefined folders. Using include followed by the "absolute or relative position" of the module you don't have to do either.
I am trying to build a custom recipe with Yocto (Rocko) for my Linux i.MX6 based embedded system.
The main recipe had dependency on a other custom recipe(as the main recipe is using header-files from this recipe) which is also creating some binaries which needs to be included in the final image.
I have added other_recipe(nbdkit) in the "DEPENDS" of main_recipe.bb
DEPENDS += "nbdkit"
the main recipe is creating a .so with the help of its own source file which is including header-files from the 'kit' recipe. I am able to install the binaries & .so generated using this main_recipe by adding it in do_install().
Now in the other_recipe(nbdkit http://cgit.openembedded.org/meta-openembedded/tree/meta-networking/recipes-support/nbdkit/nbdkit_git.bb?h=master), When I add do_install()to include the binaries generated from that recipe the main_recipe build gets failed with PKG_CONFIG error as follow,
| Package nbdkit was not found in the pkg-config search path.
| Perhaps you should add the directory containing `nbdkit.pc'
| to the PKG_CONFIG_PATH environment variable
| No package 'nbdkit' found
Other build errors says that the header-files of kit included in the main_recipe is not found.
app-nbdkit-plugin.c:2:10: fatal error: nbdkit-plugin.h: No such file or directory
Where app-nbdkit-plugin.c is source file of main_recipe & kit-plugin.h is header file of other_recipe.
The strange thing is, when I remove do_install() from other_recipe(nbdkit) the main_recipe is getting built successfully.
Now I doubt, Is it possible to set a recipe as DEPENDS of other recipe and at the same time it provides output file as do_install()?
Will sharing header-files from other_recipe to main_recipe resolves the issue? If yes, how to do that?
Thanks.
[EDIT] Added nbdkit recipe link.
I am trying to create an eclipse project from a cmake project .
I used the following command
cmake -G "Eclipse CDT4 - Unix Makefiles" ./`
it gives the following error
CMake Error at CMakeLists.txt:119 (find_package):
By not providing "FindGlib.cmake" in CMAKE_MODULE_PATH this project has
asked CMake to find a package configuration file provided by "Glib", but
CMake did not find one.
Could not find a package configuration file provided by "Glib" (requested
version 2.28) with any of the following names:
GlibConfig.cmake
glib-config.cmake
Add the installation prefix of "Glib" to CMAKE_PREFIX_PATH or set
"Glib_DIR" to a directory containing one of the above files. If "Glib"
provides a separate development package or SDK, be sure it has been
installed.
-- Configuring incomplete, errors occurred!
I have glib installed . actually it couldn't resolve the path i guess. wherever find is there in cmake file , it is giving the smiler errors. please i suggest a way out, i badly need to load this project in cmake. Thanks.
Here is line 119 where error message is pointing
find_package(Glib 2.28 REQUIRED)
include_directories(${Glib_INCLUDE_DIRS})
list(APPEND LIBS ${Glib_LIBRARIES})
add_definitions(${Glib_DEFINITIONS})
When you call find_package(MyPackage) in a CMake file, it tries to find a FindMyPackage.cmake configuration in its system path (/usr/share/cmake-2.8/Modules on my Ubuntu box), or in the directory you did specify as CMAKE_MODULE_PATH).
The solution to your problem is to create a directory for modules in your source tree (e.g. CMakeModules), put in it a FindGlib.cmake file that you can find using Google, and add
set(CMAKE_MODULE_PATH ${PROJECT_SOURCE_DIR}/CMakeModules)
in your CMakeLists.txt before the actual call to find_package.
(your problem is not related to the Eclipse generator, you could remove that from the title of the question).
On ubuntu 11.10 I installed eclipse from repositories, installed adt and cdt plugins. I am able to compile the hello-jni example using command line, but i would like to use eclipse for the task.
I followed the guide here: http://mhandroid.wordpress.com/2011/01/23/using-eclipse-for-android-cc-development/ and defined a PATH variable in eclipse preferences (window->preferences->c/c++->environment), pointing to the ndk-r7b folder. But the project won't buid. I get this error:
(Cannot run program "ndk-build"
(in directory "/home/athos/android/ndk-r7b/samples/hello-jni"):
java.io.IOException:
error=2, File o directory non esistente)
(last line should be "no such file or directory" in english)
If I specify "${PATH}/ndk-build" or "/home/athos/android/ndk-r7b/ndk-build" as the build command. i get this:
/home/lavoro/android/ndk-r7b/ndk-build
ERROR: Cannot find 'make' program. Please install Cygwin make package
/home/lavoro/android/ndk-r7b/ndk-build: 40: dirname: not found
or define the GNUMAKE variable to point to it.
If I define the GNUMAKE variable in window->preferences->c/c++->environment i get this:
ERROR: Your GNUMAKE variable is defined to an invalid name: /usr/bin/make
Please fix it to point to a valid make executable (e.g. /usr/bin/make)
Which is funny, since It suggests the exact same directory I indicated. Make is installed and present at the indicated location.
What am I missing?
It's a bit ugly, but you can always put
/fully/qualified/path/to/ndk-build
In your build command.