CMakeLists.txt: fix build without C++

[ffontaine]

Specify that uriparser is a C project (C++ is needed only for the test
runner) otherwise build will fail if no C++ compiler is found by cmake

Fixes:

• http://autobuild.buildroot.org/results/1e191676f28905a81de6282e07978aa5d4f02039

Signed-off-by: Fabrice Fontaine fontaine.fabrice@gmail.com

[hartwork]

Hi @ffontaine , thanks for taking this upstream!

What concerns me a bit right now is that the proposed change affects all targets — including the C++ testrunner target — rather than just the library and commend line tool. Is there a way to make the list of languages depend on URIPARSER_BUILD_TESTS or to set it per target rather than for the whole project?

Thanks!

[arnout]

To enable C++ for the testrunner target you can use the ENABLE_LANGUAGE command within the condition that enables the testrunner.

[ffontaine]

Thanks @arnout, I'll test it and update my PR.

[hartwork]

@ffontaine I found a way now to get AppVeyor CI happy. The problem was the CXX build flags were modified before CXX support was enabled (since it's happening a lot later now). cb0001d addresses that which allowed to merge your changes into master now. Thanks for your contribution to uriparser!