Cmake Set Compiler Options

In newer versions of cmake you can set compiler and linker flags for a single target with target compile options and target link libraries respectively yes the latter sets linker options too. For most cmake projects it makes sense to control the default compiler options in an override file instead of manually tweaking variables like cmake cxx flags. When making changes to the compileroptions cmake file it is necessary to recreate the build folder.

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How To Use Older Compiler With Cmake Integration Of Visual Studio 2019 Stack Overflow

How can i set a custom compiler without needing to set the ar.

Cmake set compiler options. See the cmake buildsystem 7 manual for more on defining buildsystem properties. Is this the expected behavior. See the cmake generator expressions 7 manual for available expressions. And if i need to set it is there a way to set in the cmakelists txt.

Cmakeoutput set log 17 6 kb cmakeoutput cmd log 17 5 kb. The final set of compile or link options used for a target is constructed by accumulating options from the current target and the usage requirements of it dependencies. Here the msvc variable is one of several variables provided by cmake which describe the system. Cmake per language option flags 21 february 2020.

For example compiling the cpp file requires the std c 11 flag but gcc does not recognise that flag and so it should not be used for the c file. I have also attached the cmakeoutput log files for the run with set and the command line options. See the cmake generator expressions 7 manual for available expressions. Cmake can set compiler flags with three broad scope categories.

The trailing i option is added for makefile generators if policy cmp0061 is not set to new. We could now go ahead and use the target compile options command to enable the warnings for each target individually. The final set of compile or link options used for a target is constructed by accumulating options from the current target and the usage requirements of its dependencies. It is set to true whenever we compile with msvc or a compatible compiler.

Add executable myap main cpp dpdksock c snip i want to specify different compile options for the cpp and c files. My cmake project builds an executable consisting of c and c source files. We set global and per language options near the beginning of the top level cmakelists txt before any targets are declared to avoid confusion about scope. Where cmake is the location of the cmake 1 command line tool and config and target are the values provided to the configuration and target options if any.

See the cmake buildsystem 7 manual for more on defining buildsystem properties.