传递额外的编译标志来调试 bitbake 配方中的构建

Question

As Bitbake builds -dev and -debug for recipes is it possible for defining compilation definitions specific to debug build for a particular recipe. Lets say I have some source code under DEBUG_INFO for some recipe ie,

#ifdef DEBUG_INFO

........... do something

#endif /* DEBUG_INFO */

and uses cmake in bitbake environment.

I want this flag be enabled for the debug binaries generated in the.debug folder. Is this possible? If I use EXTRA_OECMAKE = "-DDEBUG_INFO" it gets enabled to both dev and debug builds.

Answer 1

No, it is not possible. All packages of a recipe are built in one go, they're just the same files but split somehow.

The only difference is with "special flavors" of a recipe (native, nativesdk, target, multilib, toolchain-specific recipes, etc...), in that case, you can have different flags but still, all the packages resulting from the build of this "flavor" will be built with the same flag.

Answer 2

If you want to build another variant of a package where a certain CMake flag is set in the compilation, you can create a variant of the recipe. If the main recipe is named my-app_git.bb you can create another recipe file named my-app-tweak_git.bb and a common base, my-app.inc . In the bb files, include the inc file:

require my-app.inc

Move most of what's now in my-app_git.bb to my_app.inc , eg SRC_URI , but define different contents for EXTRA_OECMAKE in the.bb files.

Now you will have to decide which one of my-app and my-app-tweak goes into the image by specifying either my-app or my-app-tweak in an IMAGE_INSTALL definition.

This is not exactly what you asked for, but as has been stated by qschulz, you cannot change the contents of the -dev and -dbg sub-packages.

Also note that dbg and dev can be considered reserved words for variants of the package name, so if you want to use something other than tweak , as in my example, you cannot use any of them.