Not completing include directories set in .ccls

[oblitum]

I'm using coc.nvim+ccls, it provides most headers for completion, but doesn't provide headers I set in .ccls flags, for example, I'm trying this:

%clang
-Wall
-Wextra
%c -std=gnu11
%cpp -pedantic
%cpp -std=c++17
%cpp -stdlib=libc++
%cpp -I/opt/src/GSL/include
%cpp -I/opt/src/range-v3/include

When I go about including #include <rang|>, I only get boost range headers from my system, even after #include <range/|>, simple no completion for range/v3. But code completion and diagnostics works for range-v3 symbols, just inclusion that fails.

[MaskRay]

Are you using clang 7 or 8 (trunk)? If 7, can you check project.cc:190?

for (auto &E : HeaderOpts.UserEntries) {

[MaskRay]

Close due to inactivity and I cannot reproduce.

[oblitum]

Sorry, I didn't have time to test that suggestion yet (I just grab it from AUR). But I'd report it back.

[oblitum]

Does it work for you with coc.nvim and like my testcase explains? Because just by using coc.nvim I can't make it work at all.

[MaskRay]

I checked it with releases.llvm.org clang 7 not the AUR package.

[oblitum]

I was referring to ccls from AUR, not clang. I mean, I'm just installing ccls by doing aurman -S ccls, not compiling it myself, for checking the snippet you pointed.

[oblitum]

@MaskRay

Same .ccls:

%clang
-Wall
-Wextra
%c -std=gnu11
%cpp -pedantic
%cpp -std=c++17
%cpp -stdlib=libc++
%cpp -I/opt/src/GSL/include
%cpp -I/opt/src/range-v3/include

I've put the following:

    std::fstream f("/home/francisco/ccls-includes");
    for (auto &E : HeaderOpts.UserEntries) {
      std::string path =
          NormalizePath(ResolveIfRelative(entry.directory, E.Path));
      f << "user entry: " << E.Path << '\n';
      f << "normalized: " << path << '\n';
      f.flush();

ccls-includes:

user entry: /usr/local/include
normalized: /usr/local/include
user entry: lib/clang/7.0.1/include
normalized: /home/francisco/Projects/samples/c++/lib/clang/7.0.1/include
user entry: /include
normalized: /include
user entry: /usr/include
normalized: /usr/include

Notice how relative lib/clang/7.0.1/include became a bad normalized header and how there's no sign of /opt/src/ includes.

This is the result when using cmake generated compile_commands.json, no issues:

user entry: /home/francisco/ccls/src/ccls-project/src
normalized: /home/francisco/ccls/src/ccls-project/src
user entry: /home/francisco/ccls/src/ccls-project/third_party
normalized: /home/francisco/ccls/src/ccls-project/third_party
user entry: /home/francisco/ccls/src/ccls-project/third_party/rapidjson/include
normalized: /home/francisco/ccls/src/ccls-project/third_party/rapidjson/include
user entry: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.2.1/../../../../include/c++/8.2.1
normalized: /usr/include/c++/8.2.1
user entry: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.2.1/../../../../include/c++/8.2.1/x86_64-pc-linux-gnu
normalized: /usr/include/c++/8.2.1/x86_64-pc-linux-gnu
user entry: /usr/bin/../lib64/gcc/x86_64-pc-linux-gnu/8.2.1/../../../../include/c++/8.2.1/backward
normalized: /usr/include/c++/8.2.1/backward
user entry: /usr/local/include
normalized: /usr/local/include
user entry: /usr/lib/clang/7.0.1/include
normalized: /usr/lib/clang/7.0.1/include
user entry: /include
normalized: /include
user entry: /usr/include
normalized: /usr/include

[oblitum]

I'm using the project branch.

[MaskRay]

Can you try the project branch again?

The issue was that quote_dirs overrode angle_dirs so you don't get completion when < was used, " should work. The latest change unifies quote_dirs and angle_dirs to a single search_dir2kind.

[oblitum]

@MaskRay I've checked, it's working now.

[MaskRay]

Fixed by #171

[oblitum]

Hi @MaskRay, I got another issue after this fix, it's working great for the previous flags, but if I remove -stdlib=libc++ I stop getting include suggestions for <iostream> and other basic std headers.

~/P/s/c++ ❯❯❯ cat .ccls
%clang
-Wall
-Wextra
%c -std=gnu11
%cpp -pedantic
%cpp -std=c++17

[MaskRay]

I got another issue after this fix, it's working great for the previous flags, but if I remove -stdlib=libc++ I stop getting include suggestions for <iostream> and other basic std header

Isn't it the opposite? Check what clang++ -fsyntax-only -v -xc++ /dev/null -stdlib=libc++ tells you, and also read #125 (comment)

-stdlib=platform (default) uses libstdc++ on most Linux, and libc++ on Mac OS X>=10.9, FreeBSD>=10, NetBSD>=7, ...

This works for me if I want to use libc++:

%clang
-ccc-install-dir
/home/user/llvm/Release/bin
-stdlib=libc++

[oblitum]

No no, it's not the opposite, it's in fact what I've stated, with -stdlib=libc++ (which is in fact what I use in general while completing), it works. Removing just that line and leaving the rest like the cat above, I don't get completion for std headers anymore.