I am trying to build a C++ library(https://github.com/ipkn/crow) on macOS 12.0.1(Monterey).
Since I am learning C++ since yesterday, I have no clue what to do next with error message like this:
ld: warning: dylib (/usr/local/lib/libboost_system-mt.dylib) was built for newer macOS version (12.0) than being linked (11.3)
ld: warning: dylib (/usr/local/lib/libboost_thread-mt.dylib) was built for newer macOS version (12.0) than being linked (11.3)
[ 19%] Built target example_chat
Consolidate compiler generated dependencies of target example_ssl
[ 23%] Building CXX object examples/CMakeFiles/example_ssl.dir/ssl/example_ssl.cpp.o
make[2]: *** No rule to make target `/usr/bin/openssl/lib', needed by `examples/example_ssl'. Stop.
make[1]: *** [examples/CMakeFiles/example_ssl.dir/all] Error 2
make: *** [all] Error 2
/usr/bin/openssl is actually the result when which openssl is executed
My question: As a toddler in C++, how to debug an error message like this? What I have to learn as prerequisites ?
Related
I was trying to setup OpenCV environment using MingW64 and visual studio code,
Work done so far
Installed and set environment CMake
Installed OpenCV 4.5.2
OpenCV Makefile generation
using CMake Build from source(openCV directory)
specified the generator for the project
configured the compiler type and makefile type
Enabled precompiled header
Confusing part
when I entered the command mingw32-make for compilation in directory where the makefile is generated
It worked until 67% after that:
[ 67%] Built target pch_Generate_opencv_test_dnn
Scanning dependencies of target opencv_test_dnn
[ 67%] Building CXX object modules/dnn/CMakeFiles/opencv_test_dnn.dir/test/npy_blob.cpp.obj
In file included from <command-line>:0:0:
D:/opencv/build/modules/dnn/test_precomp.hpp:50:10: fatal error: test_common.hpp: No such file or directory
#include "test_common.hpp"
^~~~~~~~~~~~~~~~~
compilation terminated.
mingw32-make[2]: *** [modules\dnn\CMakeFiles\opencv_test_dnn.dir\build.make:82: modules/dnn/CMakeFiles/opencv_test_dnn.dir/test/npy_blob.cpp.obj] Error 1
mingw32-make[1]: *** [CMakeFiles\Makefile2:3429: modules/dnn/CMakeFiles/opencv_test_dnn.dir/all] Error 2
mingw32-make: *** [Makefile:181: all] Error 2
thank you
Ive downloaded the SDL2 library using brew install SDL2 but when I am trying to compile melonDS for Mac, I keep banging my head against the wall of the annoying error of
bash-3.2$ make
-- Configuring done
-- Generating done
-- Build files have been written to: /Users/bigman/melonDS/build
[ 1%] Building CXX object CMakeFiles/melonDS.dir/src/libui_sdl/main.cpp.o
/Users/bigman/melonDS/src/libui_sdl/main.cpp:24:10: fatal error:
'SDL2/SDL.h' file not found
#include <SDL2/SDL.h>
^~~~~~~~~~~~
1 error generated.
make[2]: *** [CMakeFiles/melonDS.dir/src/libui_sdl/main.cpp.o] Error 1
make[1]: *** [CMakeFiles/melonDS.dir/all] Error 2
make: *** [all] Error 2
bash-3.2$
I've uninstalled, reinstalled, tried to use compiler flags in the makefile (which did't work because the project uses cmake) but to no avail. Any other reccomendations would be great.
Edit: not solved, but as I moved on to other software, I ran into other challenges.
For a research project, I downloaded a Github project (Tagliasacchi et al., 2015) for computer vision to Linux 16.04. I have programming experience with PHP but I am new to C++. When I try to replicate the results of the study on my computer, I run early into a compiling error.
The Hello world-example of the Github project (apps » helloworld) works fine.
When trying to compile another application, I run into an error with the Makefile: cmake . works fine and some files are created. However, make does not work.
After the error, g++ [filename].cpp -o main obviously does not work.
How to solve this and get the dependencies right?
In some cases, there is a Makefile, but I run into an error:
[ 33%] Building CXX object CMakeFiles/helloworld_atb.dir/main.cpp.o
/bin/sh: 1: /usr/bin/g++-4.8: not found
CMakeFiles/helloworld_atb.dir/build.make:62: recipe for target 'CMakeFiles/helloworld_atb.dir/main.cpp.o' failed
make[2]: *** [CMakeFiles/helloworld_atb.dir/main.cpp.o] Error 127
CMakeFiles/Makefile2:67: recipe for target 'CMakeFiles/helloworld_atb.dir/all' failed
make[1]: *** [CMakeFiles/helloworld_atb.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
In other cases (e.g. in tracker » HandFinder), I can't run either cmake . or make and compiling using g++ HandFinder.cpp -o handfinder does not work:
In file included from HandFinder.cpp:1:0:
HandFinder.h:2:41: fatal error: tracker/ForwardDeclarations.h: No such file or directory
compilation terminated.
When I tried to compile example from Anvil framework for Vulkan I get following errors:
[ 97%] Linking CXX executable OutOfOrderRasterization
/usr/bin/ld: cannot find -lvulkan
collect2: error: ld returned 1 exit status
CMakeFiles/OutOfOrderRasterization.dir/build.make:126: recipe for target 'OutOfOrderRasterization' failed
make[2]: *** [OutOfOrderRasterization] Error 1
CMakeFiles/Makefile2:72: recipe for target 'CMakeFiles/OutOfOrderRasterization.dir/all' failed
make[1]: *** [CMakeFiles/OutOfOrderRasterization.dir/all] Error 2
Makefile:83: recipe for target 'all' failed
make: *** [all] Error 2
How i need to configure Vulkan to resolve it? (Ubuntu)
Check you LIBRARY paths. You might need to download and install vulkan. There should a .so file in one your library paths(/usr/lib{,64},/lib{,64}, /usr/share/lib{,64}) named to the effect of libvulkan.numbers.so.
See this ask ubuntu question: https://askubuntu.com/questions/796442/ld-cannot-find-lvulkan
CMake versions 3.7 and later ship with a FindVulkan.cmake module that finds the Vulkan includes and library for you if you have a Vulkan SDK installed and the VULKAN_SDK environment variable set. The CMake module also finds the includes and library if you have installed a Vulkan package to your system directories. The Getting Started guide on the LunarXchange website has some additional detail.
In order to use OpenCV in Qt, I have to compile it with MinGW by cmake.
Software are the following:
Qt 5.4.0
Opencv 2.4.11
CMake 3.2.2
MinGW version unknown, GCC 4.8.1
A fatal error occurred when I make file and I have no idea how to solve it at all.
[ 29%] Automatic moc for target opencv_highgui
Generating moc_window_QT.cpp
Exit code 0xc000007b
AUTOGEN: error: process for C:/opencvbuild/modules/highgui/moc_window_QT.cpp failed:
Exit code 0xc000007b
moc failed...
modules\highgui\CMakeFiles\opencv_highgui_automoc.dir\build.make:48: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui_automoc' failed
mingw32-make[2]: *** [modules/highgui/CMakeFiles/opencv_highgui_automoc] Error 1
CMakeFiles\Makefile2:2066: recipe for target 'modules/highgui/CMakeFiles/opencv_highgui_automoc.dir/all' failed
mingw32-make[1]: *** [modules/highgui/CMakeFiles/opencv_highgui_automoc.dir/all] Error 2
Makefile:145: recipe for target 'all' failed
mingw32-make: *** [all] Error 2
These messages are shown in cmd.
Then I revised CMakeLists.txt, SET(CMAKE_AUTOMOC OFF)
modules\highgui\CMakeFiles\opencv_highgui_automoc.dir\build.make:64: recipe for target 'modules/highgui/qrc_window_QT.cpp' failed
Does anybody know a solution?
2 items to try.
Try running make with VERBOSE=1 to increase the output on the makefile. That should give you a better idea of what is wrong.
Try running with cmake-gui, then turn on advanced mode to check out what CMake found for the different Qt5 dependencies. On Mac, I install the latest Qt to my home directory, causing me to have to manually set variables. This is what it looks like for me.
Hopefully this provides some useful information.