Questions tagged [cmake]
CMake is a cross-platform, open-source build system generator. It generates files for build systems like native makefiles, ninja-build and project files for several integrated development environments.
28,550
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Looking for a 'cmake clean' command to clear up CMake output
Just as make clean deletes all the files that a makefile has produced, I would like to do the same with CMake. All too often I find myself manually going through directories removing files like ...
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Debug vs Release in CMake
In a GCC compiled project,
How do I run CMake for each target type (debug/release)?
How do I specify debug and release C/C++ flags using CMake?
How do I express that the main executable will be ...
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What is the difference between using a Makefile and CMake to compile the code?
I code in C/C++ and use a (GNU) Makefile to compile the code. I can do the same with CMake and get a Makefile. However, what is the difference between using a Makefile and CMake to compile the code?
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What is CMake equivalent of 'configure --prefix=DIR && make all install '?
I do cmake . && make all install. This works, but installs to /usr/local.
I need to install to a different prefix (for example, to /usr).
What is the cmake and make command line to install ...
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Define a preprocessor macro through CMake
How do I define a preprocessor variable through CMake?
The equivalent code would be #define foo.
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votes
17
answers
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How do I activate C++ 11 in CMake?
When I try to run a CMake generated makefile to compile my program, I get the error that
range based for loops are not supported in C++ 98 mode.
I tried adding add_definitions(-std=c++0x) to my ...
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votes
11
answers
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How to properly add include directories with CMake
About a year ago I asked about header dependencies in CMake.
I realized recently that the issue seemed to be that CMake considered those header files to be external to the project. At least, when ...
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362
votes
8
answers
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Using CMake with GNU Make: How can I see the exact commands?
I use CMake with GNU Make and would like to see all commands exactly (for example how the compiler is executed, all the flags etc.).
GNU make has --debug, but it does not seem to be that helpful are ...
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341
votes
12
answers
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Switching between GCC and Clang/LLVM using CMake
I have a number of projects built using CMake and I'd like to be able to easily switch between using GCC or Clang/LLVM to compile them. I believe (please correct me if I'm mistaken!) that to use Clang ...
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votes
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answers
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CMake: Print out all accessible variables in a script
I'm wondering if there is a way to print out all accessible variables in CMake. I'm not interested in the CMake variables - as in the --help-variables option. I'm talking about my variables that I ...
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8
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How do I add a linker or compile flag in a CMake file?
I am using the arm-linux-androideabi-g++ compiler. When I try to compile a simple "Hello, World!" program it compiles fine. When I test it by adding a simple exception handling in that code it works ...
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answers
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What are the differences between Autotools, Cmake and Scons?
What are the differences between Autotools, Cmake and Scons?
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votes
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How do I make CMake output into a 'bin' dir?
I'm currently constructing a project with a plugin structure. I'm using CMake to compile the project. The plugins are compiled in separate directories. My problem is that CMake compiles and saves the ...
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What's the CMake syntax to set and use variables?
I'm asking this as a reminder to myself the next time I use CMake. It never sticks, and Google results aren't great.
What's the syntax to set and use variables in CMake?
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cmake and libpthread
I'm running RHEL 5.1 and use gcc.
How I tell cmake to add -pthread to compilation and linking?
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What is the difference between include_directories and target_include_directories in CMake?
I have a directory structure for my C++ code which goes like this :
|
|->include
|->src
I am writing a CMakeLists.txt file for my code. I want to understand the difference between ...
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answers
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CMake not able to find OpenSSL library
I am trying to install a software that uses cmake to install itself. When I run cmake .. on the command line, it gives me following error in the CMakeLists.txt on the line that says find_package(...
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How exactly does CMake work? Why are so many files generated?
What exactly was going on behind the scenes when for such a small CMakeLists.txt file,
cmake_minimum_required (VERSION 2.6)
project(Tutorial)
add_executable(Tutorial tutorial.cpp)
and such a small ...
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239
votes
5
answers
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What use is find_package() when you need to specify CMAKE_MODULE_PATH?
I'm trying to get a cross-plattform build system working using CMake. Now the software has a few dependencies. I compiled them myself and installed them on my system.
Some example files which got ...
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4
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How to create a shared library with cmake?
I have written a library that I used to compile using a self-written Makefile, but now I want to switch to cmake. The tree looks like this (I removed all the irrelevant files):
.
├── include
│ ├── ...
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answers
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What is the idiomatic way in CMAKE to add the -fPIC compiler option?
I've come across at least 3 ways to do this and I'm wondering which is the idiomatic way. This needs to be done almost universally to any static library. I'm surprised that the Makefile generator in ...
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214
votes
5
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In CMake, how can I test if the compiler is Clang?
We have a set of cross-platform CMake build scripts, and we support building with Visual C++ and GCC.
We're trying out Clang, but I can't figure out how to test whether or not the compiler is Clang ...
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211
votes
5
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Automatically add all files in a folder to a target using CMake?
I am considering switching a cross platform project from separate build management systems in Visual C++, XCode and makefiles to CMake.
One essential feature I need is to add automatically all files ...
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answers
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Creating a directory in CMake
In CMake, I want to create a directory if it doesn't already exist. How can I do this?
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votes
8
answers
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Is it better to specify source files with GLOB or each file individually in CMake?
CMake offers several ways to specify the source files for a target.
One is to use globbing (documentation), for example:
FILE(GLOB MY_SRCS dir/*)
Another method is to specify each file individually.
...
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191
votes
2
answers
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CMake: Project structure with unit tests
I am trying to structure my project to include the production sources (in src subfolder) and tests (in test subfolder). I am using CMake to build this. As a minimal example I have the following files:
...
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votes
10
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Copy file from source directory to binary directory using CMake
I'm trying to create a simple project on CLion. It uses CMake to generate Makefiles to build project (or some sort of it)
All I need to is transfer some non-project file (some sort of resource file) ...
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5
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CMake link to external library
How to get CMake to link an executable to an external shared library that is not build within the same CMake project?
Just doing target_link_libraries(GLBall ${CMAKE_BINARY_DIR}/res/mylib.so) gives ...
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Is it possible to get CMake to build both a static and shared library at the same time?
Same source, all that, just want a static and shared version both. Easy to do?
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182
votes
23
answers
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CMake error at CMakeLists.txt:30 (project): No CMAKE_C_COMPILER could be found
I'm trying make a Visual Studio solution with CMake to compile the latest version of aseprite and CMake keeps giving me the:
No CMAKE_C_COMPILER could be found.
No CMAKE_CXX_COMPILER could be found.
...
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votes
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answers
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OS specific instructions in CMAKE: How to?
I am a beginner to CMAKE. Below is a simple cmake file which works well in mingw environment windows. The problem is clearly with target_link_libraries() function of CMAKE where I am linking ...
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answer
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Cause CMAKE to generate an error
How can I get CMAKE to generate an error on a particular condition. That is, I want something like this:
if( SOME_COND )
error( "You can't do that" )
endif()
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178
votes
2
answers
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Difference between CMAKE_CURRENT_SOURCE_DIR and CMAKE_CURRENT_LIST_DIR
From the Wiki:
CMAKE_CURRENT_SOURCE_DIR
this is the directory where the currently processed CMakeLists.txt is located in
CMAKE_CURRENT_LIST_DIR
(since 2.8.3) this is the directory of the listfile ...
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How do you add Boost libraries in CMakeLists.txt?
I need to add Boost libraries into my CMakeLists.txt. How do you do it or how do you add it?
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How to set warning level in CMake?
How to set the warning level for a project (not the whole solution) using CMake? Should work on Visual Studio and GCC.
I found various options but most seem either not to work or are not consistent ...
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votes
8
answers
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How to specify new GCC path for CMake
My OS is centos which has a default gcc in path /usr/bin/gcc. But it is old, I need a new version of gcc. So I install a new version in a new path /usr/local/bin/gcc.
But when I run cmake, it still ...
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Using CMake, how do I get verbose output from CTest?
I'm using CMake to build my project. I have added a unit test binary which is using the Boost unit testing framework. This one binary contains all of the unit tests. I've added that binary to be run ...
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votes
6
answers
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CMake how to set the build directory to be different than source directory
I'm pretty new to CMake, and read a few tutorials on how to use it, and wrote some complicated 50 lines of CMake script in order to make a program for 3 different compilers. This probably concludes ...
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votes
12
answers
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How to start working with GTest and CMake
I have recently been sold on using CMake for compiling my C++ projects, and would now like to start writing some unit tests for my code. I have decided to use the Google Test utility to help with this,...
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CMake target_link_libraries Interface Dependencies
I am new to CMake and a bit confused with the PUBLIC, PRIVATE and INTERFACE keywords related to target_link_libraries(). Documentation mentions that they can be used to specify both the link ...
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How to set a CMake option() at command line
I created a CMakeLists.txt that contains the following
project(P4V)
cmake_minimum_required(VERSION 2.6)
option(BUILD_STATIC_LIBS "Build the static library" ON)
option(BUILD_SHARED_LIBS "Build the ...
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CMake target_include_directories meaning of scope
What is the meaning of the keyword PUBLIC, PRIVATE, and INTERFACE related to CMake's target_include_directories?
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Override compile flags for single files
I would like to use a global set of flags for compiling a project, meaning that at my top-level CMakeLists.txt file I have specified:
ADD_DEFINITIONS ( -Wall -Weffc++ -pedantic -std=c++0x )
However, ...
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CMake unable to determine linker language with C++
I'm attempting to run a cmake hello world program on Windows 7 x64 with both Visual Studio 2010 and Cygwin, but can't seem to get either to work. My directory structure is as follows:
HelloWorld
-- ...
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How do I tell CMake to link in a static library in the source directory?
I have a small project with a Makefile which I'm trying to convert to CMake, mostly just to get experience with CMake. For purposes of this example, the project contains a source file (C++, though I ...
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CMake: How to build external projects and include their targets
I have a Project A that exports a static library as a target:
install(TARGETS alib DESTINATION lib EXPORT project_a-targets)
install(EXPORT project_a-targets DESTINATION lib/alib)
Now I want to use ...
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7
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How to link C++ program with Boost using CMake
What should my CMake file look like for linking my program with the Boost library under Ubuntu?
The errors shown during running make:
main.cpp:(.text+0x3b): undefined reference to `boost::...
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votes
31
answers
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CMake does not find Visual C++ compiler
After installing Visual Studio 2015 and running CMake on a previous project, CMake errors stating that it could not find the C compiler.
The C compiler identification is unknown
The CXX compiler ...
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3
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Most simple but complete CMake example
Somehow I am totally confused by how CMake works. Every time I think that I am getting closer to understanding how CMake is meant to be written, it vanishes in the next example I read. All I want to ...
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4
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C++ project organisation (with gtest, cmake and doxygen)
I am new to programming in general so I decided that I would start by making a simple vector class in C++. However I would like to get in to good habits from the start rather than trying to modify my ...
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