Unable to use `picojson.h` from `/usr/include/picojson.h`

[olifre]

The code currently hardcodes use of <includepath>/picojson/picojson.h, while picojson natively installs into <prefix>/include/picojson.h, so a native installation can not be used, see:
https://github.com/kazuho/picojson/blob/111c9be5188f7350c2eac9ddaedd8cca3d7bf394/Makefile#L21

This issue is probably inherited from Thalhammer/jwt-cpp#213 .

[djw8605]

Should we wait for jwt-cpp to fix it?

[olifre]

That's probably the best course of action (even though it will not be fast). For now, I am using a rather ugly hack for packaging in Gentoo:
https://github.com/gentoo/guru/blob/3b569c6eb473d954f759bc638d8bc4e38bd06a18/dev-cpp/scitokens-cpp/scitokens-cpp-0.7.0.ebuild#L40-L41
However, of course I use a similar hack for jwt-cpp:
https://github.com/gentoo/guru/blob/3b569c6eb473d954f759bc638d8bc4e38bd06a18/dev-cpp/jwt-cpp/jwt-cpp-0.4.0.ebuild#L35

In scitokens-cpp, a direct include of picojson/picojson.h is done in src/scitokens_cache.cpp and src/scitokens_internal.cpp. Depending on how jwt-cpp will solve this, scitokens-cpp might inherit their CMake macro / config to determine the include path.