pr0g / cmake-examples

A collection of as simple as possible, modern CMake projects

Hello, world! 👋

Hey there, I'm Tom, a software developer working at Amutri.

This is my personal GitHub account (pr0g) where I'm usually noodling around on some C or C++ hobby project or other...

You can find my blog on tomhultonharrop.com.

My previous contributions to the Open 3D Engine (O3DE) project as part of Game Engine and Developer Services (AWS) can be found here: hultonha

How to reach me:

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Pronouns: He/Him

 

cmake-examples's Issues

Update CMakeLists.txt files to use target_sources

After watching a new CMake video (https://youtu.be/y9kSr5enrSk) the speaker made mention of the new(ish) command target_sources which is now preferable to listing source files in the add_library/add_executable commands (it's possible to get more fine grained control of visibility with PRIVATE/INTERFACE/PUBLIC too). Should really update the examples to use this! (Soon...)

Also should add the new video to the README!

How to use this with Conan?

Does anybody know how to use this with Conan and its components in conanfile.py?

Installing is bad

Generally, installing means you've made the local system and specific compiler for a project some sort of default.

This is bad. Modern developers need to compile for multiple targets using multiple compilers and multiple versions of dependencies. For example, what does it mean to "install" something like openssl when you want to use it for multiple versions of Android, iOS, your local machine, a Windows 7 desktop app, and some embedded system? Even if you think you're just running on your local machine, you probably have several different versions of compilers you use - clang, gcc, some Microsoft thing, some other version of some Microsoft thing, etc.

Installing isn't a useful concept in 2019. Build dependencies, always and everywhere.

Add a license

A license should be added to this repository, so that users know their rights. See Choose a License for more information 🙂

find_package(bec) - what is it?

In examples/more/external-project-add/CMakeLists.txt there is a reference to a bec package but I can't find it.

shared library example met build error

I try a few times to build core/shared/application. The following error occurs. The detailed log as follows

user@user-AIOT-AIVD:~/cmake-examples/examples/core/shared/application$ cmake --build build
Checking file [/home/user/cmake-examples/examples/core/shared/library/install/lib/cmake/calculator-shared/calculator-sharedConfig.cmake]
Checking file [/home/user/cmake-examples/examples/core/shared/library/install/lib/cmake/calculator-shared/calculator-shared-config.cmake]
-- Configuring done
-- Generating done
-- Build files have been written to: /home/user/cmake-examples/examples/core/shared/application/build
Scanning dependencies of target calculator-app
[ 50%] Building CXX object CMakeFiles/calculator-app.dir/main.cpp.o
[100%] Linking CXX executable calculator-app
/usr/bin/ld: CMakeFiles/calculator-app.dir/main.cpp.o: in function `main':
main.cpp:(.text+0x1e): undefined reference to `calc_pow'
/usr/bin/ld: calculator-app: hidden symbol `calc_pow' isn't defined
/usr/bin/ld: final link failed: bad value
collect2: error: ld returned 1 exit status
make[2]: *** [CMakeFiles/calculator-app.dir/build.make:85: calculator-app] Error 1
make[1]: *** [CMakeFiles/Makefile2:76: CMakeFiles/calculator-app.dir/all] Error 2
make: *** [Makefile:84: all] Error 2