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How to link external libraries with cmake?
i want to include header files (Liblaries/include)
and link .lib files(Liblaries/lib) + opengl lib.
ADD_LIBRARY(LibsModule
file1.cpp
file2.cpp
)
then add them to a module call LibsModule
target_link_libraries(LibsModule -lpthread)
Please refer to this post:
Adding Libraries with cmake
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I'm writing a plugin based emulation system. The way this works is that the main system sets up an ImGui instance and the plugins use ImGui to draw windows to the screen. I'm using a static build of ImGui which is embedded in the host program and linked to at run time; on Linux, this works fine, because the plugin .so files don't need to link against ImGui at compile time, only at run time. On OS X I get errors about "Undefined symbols for architecture x86_64" when trying to link the .dylibs.
Is there a way to tell OS X to leave the linking for run-time also?
Found the answer elsewhere - I need to add the -undefined dynamic_lookup flag on OS X.
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How do I import libraries that I can include with #include <> in C++. Specifically, I am trying to import the SDL library, I am using Atom, and my operating system is ubuntu 16.04.
There is default path where compiler searches libraries.
What are the GCC default include directories?
If you are using gcc/g++:
gcc -xc++ -E -v -
Or you have to specify path to the library:
#include "../folder1/header1.h"
#include "../folder2/header2.h"
As already mentioned, you should have this library on your local system.
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I am used with using OpenCV with python. But does someone have an idea how to add openCV library to a C++ compiler (such DevCpp or CodeBlocks...).
If there is a compiler on which it's easier to install OpenCV library no problem, I have no restriction conserning the compiler.
I followed some tutos on the net but they were not so clear.
Thanks.
C++ has two important phases of compilation. First, each individual .cpp file is needed. You need the library header files (.h) for this. Secondly, the separate parts are linked together, and you need the library files themselves. (.lib/.a depending on platform).
So, you need to provide paths to both. The compiler knows which exact headers are needed from the #include statement, but the libraries to link must be explicitly listed.
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This is a newb question. I'm not sure if "external libraries" is the right terminology, but I see some programs include or use libraries or modules that are not programmer-defined. Do I need to do anything special when compiling - do I need to tell the compiler where to find these external libraries?
For example, on this page http://www.unidata.ucar.edu/software/netcdf/examples/programs/, SimpleXyWr.cpp and simple_xy_wr.f90 both reference the netCDF library/module. How does the compiler know where to find the library/module? Do I need to provide the path myself at some point in the compilation?
Typically for GNU compilers -L options tells where to find library and -l tells what library to link. For example,
f77 -o run main.f -L/usr/local/lib -llapack -lblas
will look for libraries in /usr/local/lib driectory and link with lapack and blas libraries
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how i can compile boost under linux without write in system folders.
I need to get headers files and shared libraries of boost in one my specific folder.
You don't need to be root to compile Boost on Linux. Moreover, many Boost libraries are header only so no compilation is needed. see also Building and Installing the Library and Easy Build and Install for more details.