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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > M-x emacs-thread
 
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VikingofRock
Aug 24, 2008




 Hey so I'm trying to set up flycheck with a C++ project, but I can't get it to find boost files and I can't seem to find the answer online. I think I must be missing something obvious.

My .dir-locals.el file is:

Lisp code:
(c++-mode
  (flycheck-clang-include-path (list "/usr/local/include/"))
  (flycheck-gcc-include-path (list "/usr/local/include/"))
  (flycheck-clang-language-standard . "c++14")
  (flycheck-gcc-language-standard . "c++14"))
And my code contains the line:

C++ code:
#include <boost/optional.hpp>
This line gets marked as an error by flycheck, saying "'boost/optional.hpp' file not found (c/c++-clang)".

However, /usr/local/include/boost/optional.hpp definitely exists and this whole thing compiles just fine with clang. So what stupid thing am I doing wrong?

Edit: Welp, I added an extra set of parentheses around the whole thing and it seems to have fixed things. I'm not really sure I understand why that made a difference, so I'm gonna change my question to that.

VikingofRock fucked around with this message at 06:12 on Jan 14, 2017

* # ¿ Jan 14, 2017 01:50
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# ¿ May 11, 2024 18:16
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VikingofRock
Aug 24, 2008

There Will Be Penalty posted:

The contents of .dir-locals.el is a list (the top level of parentheses after you fixed your file) that can contain multiple mappings (each mapping being your second level of parentheses, a cons of a mode and an association list). What you had in that file before you fixed it was just one mapping. See a clearer example:

https://www.gnu.org/software/emacs/manual/html_node/emacs/Directory-Variables.html

Oooh that makes sense. I really need to go through some more lisp tutorials sometime to make this all more intuitive.

* # ¿ Jan 14, 2017 10:03
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The Something Awful Forums > Discussion > Serious Hardware/Software Crap > The Cavern of COBOL > M-x emacs-thread