I want to follow the Vulkan Guide tutorial on my Mac, but I'm having trouble starting. I want to use VSCode and CMake.
Initially I got some problems for the imgui library, so I added these flags in the CMakeList.txt:
target_compile_features(vulkan_guide PRIVATE cxx_std_17)
target_compile_features(imgui PRIVATE cxx_std_17)
target_compile_features(vkbootstrap PRIVATE cxx_std_17)
Now everything works except SDL2 dependencies. I have the following error now when calling make.
.../vulkan-guide/third_party/imgui/imgui_impl_sdl.cpp:50:10: fatal error: 'SDL.h' file not found
I saved the SDL2 framework inside /Library/Frameworks/. Is there something else that needs to be changed in the CMakeLists.txt file to make this work?
I found out the way to solve this issue. Here are the changes required to make the setup work on Mac using VSCode. Read the readme and look at the changes in the various CMakeLists.txt.
Related
I'm a *nix user, installing LLVM is easy for me, just download the precompiled file, set LLVM_DIR, and you're done. But I'm having a lot of problems with Windows ...
I downloaded LLVM-<version>-win64.exe from the GitHub release, but I can't find LLVMConfig.cmake file. Then I tried to compile LLVM from the source following this documentation.
When I started compiling my own project, I got this error:
'C:/<...>/Debug/libLLVMSupport.lib', needed by '<...>.exe', missing and no known rule to make it
I guess maybe I'm missing some compile options. but I can't find the documentation for LLVM_ENABLE_PROJECTS or BUILD_SHARED_LIBS, not even a list of component names.
I tried to add -DBUILD_SHARED_LIBS=ON but CMake told me BUILD_SHARED_LIBS option is not supported on Windows.
I want to add a smoothing function to my C++ project so I'm trying to use the smooth_mesh() function in the CGAL library. This function requires ceres-solver to work (and glog and Eigen) so I included it in an include folder in my project.
My problem is that when I try to launch a CGAL::Polygon_mesh_processing::smooth_mesh(), it returns an error (even though everything compiles properly):
Area-based smoothing requires the Ceres Library, which is not available.
The full way I use the function is the following:
CGAL::Polygon_mesh_processing::smooth_mesh(mesh,
CGAL::Polygon_mesh_processing::parameters::number_of_iterations(nb_iterations)
.use_area_smoothing(true)
.use_safety_constraints(false)
.edge_is_constrained_map(eif));
There is a very similar question on stack but the given solution did not help me to solve my problem. The answer directed me to use #define CGAL_PMP_USE_CERES_SOLVER but even with that the error is still happening.
It also mentions Cmake but I haven't built my project nor the libraries with CMake because CGAL instructions use vcpkg so I'm guessing that it may be where the problem comes from considering most ceres doc I found use Cmake. But instructions to link ceres and cgal using Cmake are pretty hard to find and/or not very clear (and I'm also very new to Cmake so that's not helping...).
I have tried to add the library manually to my project settings (I'm using Visual Studio on Windows), add some #include linking to ceres in some cgal files but nothing seems to be working.
I'm hoping someone here has run into this problem and managed to solve it.
If you can help me, thank you in advance!
I'm interested in trying out Vulkan for myself, but I'm having difficulty getting CMake to link to it reliably. I decided to use CMake's FindVulkan module... or at least how I think it should work. Here's how I did it:
# Hey CMake. Look for Vulkan.
find_package(Vulkan REQUIRED)
# Alright, no errors? Tell me what you found!
message("Vulkan found? " ${VULKAN_FOUND})
message("Alright, where is it? " ${VULKAN_LIBRARY})
message("And I can include it? " ${VULKAN_INCLUDE_DIR})
And a little later in the file:
# Let's make a library and link vulkan
include_directories(${VULKAN_INCLUDE_DIR})
add_library(myLib myLib.cpp myLib.h)
target_link_libraries(myLib ${VULKAN_LIBRARY})
So, I get my results! First off, my CMake output:
Vulkan found? TRUE
Alright, where is it? VULKAN_LIBRARY-NOTFOUND
And I can include it? C:/VulkanSDK/1.0.65.1/Include
-- Could NOT find Vulkan (missing: VULKAN_LIBRARY)
-- Could NOT find Doxygen (missing: DOXYGEN_EXECUTABLE)
-- Using Win32 for window creation
CMake Error: The following variables are used in this project, but they are set to NOTFOUND.
Please set them or make sure they are set and tested correctly in the CMake files:
VULKAN_LIBRARY (ADVANCED)
linked by target "TOVE" in directory C:/Users/User/Desktop/TOVE
Odd, looks like you found my include directory, but you can't find my library. The messages in the middle are actually GLFW. I kept them in just incase they meant something more. Finally, CMake stops with an error.
Some additional testing reveals that both ${VULKAN_LIBRARIES} and ${VULKAN_INCLUDE_DIRS} are blank. As expected, swapping them out with their singular counterparts makes Visual Studio 2017 mountains of confused about my vulkan/vulkan.h include.
I can't find any case on the internet where someone gets a VULKAN_LIBRARY-NOTFOUND, but there might be another library that has similar issues. Why am I finding only half of the information here? Is it an issue with Vulkan or CMake, or am I just really bad at writing with CMake. I'm relatively new to CMake, and I'm just experimenting with it so I apologize if it was just me misusing some important function or something among those lines.
I had the same error while trying to compile GLFW 3.2.1 on Windows. The problem is that GLFW CMakeLists uses its own FindVulkan.cmake in "${GLFW_SOURCE_DIR}/CMake/modules" which seems a bit outdated.
Taking some code from the FindVulkan.cmake inside CMake distribution (3.10) to modify the GLFW file works as expected and VULKAN_LIBRARY cache var is filled with the path of the .lib file.
i am trying to build box2D using cmake. When i click configure (and selecting my version of visual studio) cmake starts working but it finnishes with the error message:
You have called ADD_LIBRARY for library glfw without any source files.
This typically indicates a problem with your CMakeLists.txt file
Configuring done
What is the issue and how can i solve it? Where is the CMakeLists.txt located and how can i edit it to build without errors?
It is probably an error in this library. Try another version or post a bug.
It means that according to this file, a library should be created without source files (an empty library), which is probably bug.
CMakeLists.txt is located in every cmake source directory, make sure you're choosing the right directory.
So trying to CMake libgit on windows, ive build a valid libssh2 but I'm getting this error when compiling libgit
checking for module 'libssh2'
package 'libssh2' not found
LIBSSH2 not found. Set CMAKE_PREFIX_PATH if it is installed outside of the default search path.
Configuring done
now ive tried setting the default prefix path and ive tried setting library paths but I just cant get it to see my libssh2? any ideas?
its getting quite frustrating as I have it right here and it cant find it :D
maybe someone could tell me the correct path it should be installed?
Kind regards
Rob
****************Update 1****************
so i pulled out of the make file this....seems to have changed but as far as i can see PKG_CHECK_MODULES(LIBSSH2 libssh2) is the check, maybe it doesnt set LIBSSH2_FOUND?
# Optional external dependency: libssh2
IF (USE_SSH)
PKG_CHECK_MODULES(LIBSSH2 libssh2)
ENDIF()
IF (LIBSSH2_FOUND)
ADD_DEFINITIONS(-DGIT_SSH)
INCLUDE_DIRECTORIES(${LIBSSH2_INCLUDE_DIRS})
LINK_DIRECTORIES(${LIBSSH2_LIBRARY_DIRS})
LIST(APPEND LIBGIT2_PC_LIBS ${LIBSSH2_LDFLAGS})
#SET(LIBGIT2_PC_LIBS "${LIBGIT2_PC_LIBS} ${LIBSSH2_LDFLAGS}")
SET(SSH_LIBRARIES ${LIBSSH2_LIBRARIES})
CHECK_LIBRARY_EXISTS("${LIBSSH2_LIBRARIES}" libssh2_userauth_publickey_frommemory "${LIBSSH2_LIBRARY_DIRS}" HAVE_LIBSSH2_MEMORY_CREDENTIALS)
IF (HAVE_LIBSSH2_MEMORY_CREDENTIALS)
ADD_DEFINITIONS(-DGIT_SSH_MEMORY_CREDENTIALS)
ENDIF()
ELSE()
MESSAGE(STATUS "LIBSSH2 not found. Set CMAKE_PREFIX_PATH if it is installed outside of the default search path.")
ENDIF()
ive tried setting LIBSSH2_INCLUDE_DIRS /LIBSSH2_INCLUDE_DIR and LIBSSH2_LIBRARIES to no avail?
****************Update 2****************
So as per sugested its searching for the .pc file. well i found it....pointed it directly at it and it still couldnt find it? i even pointed it several directories up from it. the paths in the pc file seem to match the locations i would expect.? is this make file just completly borked?
checking for module 'libssh2'
package 'libssh2' not found
LIBSSH2 not found. Set CMAKE_PREFIX_PATH if it is installed outside of the default search path.
****************Update 3****************
So update 3 i installed a binary of openssl on windows, further download libssh2-master and used cmake gui to build a visual studio solution which had no errors, the solution compiled and built. I made an install and package from the solution and installed in the suggested default location, i also took the header files, and library files and put them in my vc folder, and once i tried building the shared lib and put the dll in system32 etc so ive tried quite a lot :) libgit still cant find it
Hope thats a bit more info
****************Update 4****************
So fixed it in the end... i went back through the git history and blamed the make file. found someone originally wrote it with FIND_PACKAGE but changed it to suit their own needs.
so i changed it back and used the below. no longer complains and finds what it needs and compiles and works. so yay thanks for your help
IF (USE_SSH)
FIND_PACKAGE(LIBSSH2)
ENDIF()
IF (LIBSSH2_FOUND)
ADD_DEFINITIONS(-DGIT_SSH)
INCLUDE_DIRECTORIES(${LIBSSH2_INCLUDE_DIR})
LINK_DIRECTORIES(${LIBSSH2_LIBRARY_DIRS})
LIST(APPEND LIBGIT2_PC_LIBS ${LIBSSH2_LDFLAGS})
SET(LIBGIT2_PC_REQUIRES "${LIBGIT2_PC_REQUIRES} libssh2")
SET(SSH_LIBRARIES ${LIBSSH2_LIBRARIES})
ADD_DEFINITIONS(-DGIT_SSH_MEMORY_CREDENTIALS)
ENDIF()
I actually started a new thread on this, i successfully managed it in the end. Answer is on
libgit2 with libssh2 and libopenssl on windows
so effectively
LIBSSH2_FOUND (set it to TRUE)
LIBSSH2_INCLUDE_DIRS
LIBSSH2_LIBRARY_DIRS