CONAN_EXPORTED variable in CMake

Acording to the docs: http://docs.conan.io/en/latest/changelog.html?highlight=conan_exported the CMake variable CONAN_EXPORT should be set when running conan create, and not set when running conan build. The documentation is actually non existant for this variable and the only mention is in the changelog, saying on version 0.19.0:

Feature: new cmake CONAN_EXPORTED variable, can be used in CMakeLists.txt to differentiate building in the local conan cache as package and building in user space

From my tests I see that the variable is set in both scenarios. I’ve tested this with Conan 1.0.4. Please let me know if I’m using this wrong.

I’m testing it like this:

if(CONAN_EXPORTED) # set when running "conan build"
    message("=================================== CONAN_EXPORT is set: ${CONAN_EXPORT}")
else()
    message("=================================== CONAN_EXPORT is not set: ${CONAN_EXPORT}")
endif()

In both scenarios the output is:

=================================== CONAN_EXPORT is set:

---

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[madpipeline]

Yes, that is the differentiation I wanted to make. I can now set a variable myself, now that I know of conanfile.in_local_cache. I’ll test this one now.

[lasote]

Maybe we could create a new variable in CMake to follow the conanfile.in_local_cache. Is that the differentiation you want to make?

http://docs.conan.io/en/latest/reference/conanfile/attributes.html?highlight=in_local_cache#in-local-cache