Questions tagged [c++]

Questions related to the C++ language or the cc-mode

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1answer
37 views

Different indentation in files with same modes

My .cxx files have 8-character indentation, while .cpp files have 4-character one. They have exact same modes enabled: My auto-mode-alist has the following c++ lines: ("\\.ii\\'" . c++-mode) ("\\.h\...
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0answers
6 views

Focus ggtags-global when it spawns

When I find definitions ggtags-find-tag-dwim and there are multiple results it opens *ggtags-global* but the focus remains in my buffer that initiated the call to ggtags-find-tag-dwim. I'm trying to ...
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0answers
59 views

C++ auto completion is not working in spacemacs with clangd

I'm newbie to emacs/spacemacs. I'm using emacs version 26.3 I have installed spacemaces in my system using command git clone https://github.com/syl20bnr/spacemacs ~/.emacs.d and rm ~/.emacs Now I'm ...
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0answers
28 views

Passing arguments to dap-mode (c++)

everyone. I am new to debugging with dap-mode and i can't figure out how to pass arguments. I tried by creating a template (dap-register-debug-template "GDB::Mine" (list :type "gdb" :...
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0answers
12 views

How to get first nested parameter indented based on outermost function

I would like to get the following cc-mode indentation behavior (c-basic-offset is 4): outerFunction(innerFunction( parameter1, parameter2)); However I would like to maintain arglist aligned ...
0
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0answers
33 views

Why certain rebind keys doesn't work in c++ mode?

I've recently started using emacs and wanted to customize the editor. So, I've tried to rebind certains keys, but It's doesn't to work no matter what I do. (global-unset-key (kbd "C-c") ) (global-set-...
3
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0answers
526 views

How to debug C++ (dap-mode + LLDB or GDB)

I want to use dap-mode to debug a C++ code. Until now I followed instructions dap-mode (LLDB) and lldb-vscode. I further enabled the mode and UI via (dap-mode 1) (dap-ui-mode 1) When I execute dap-...
1
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0answers
22 views

Search for functions by type signature

Is there a convenient way to search through a C/++ codebase and list all the functions with matching type signatures? I'm working in a codebase that makes heavy use of function pointers. ...
1
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0answers
9 views

How do you fix a large list of unknown files in Ebrowse?

I'm trying to use the emacs Ebrowse tool. The issue I'm having is a great majority of the C++ files, from my BROWSE file, are showing up as (unknown) file type, resulting in me being unable to open ...
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0answers
30 views

Spacemacs: smart search skips C++ files

emacs version: 26.1 Spacemacs version: 0.200.13 Spacemacs init is the default generated one. Smart search set to ag OR grep My git C++ project has C++ source and header files, plus python and text ...
0
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0answers
48 views

Stepping through c code in emacs

I am trying to step through code in emacs and am looking for a plugin which will displa the contents of an element when I hover over it. Is there any plugin like this currently? How do you step ...
1
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0answers
92 views

How do you guys use doxygen? [closed]

I'm curious about Doxygen, how do you guys manage documentation in C/C++ projects on emacs? I didn't find a good package that does it consistently. So far I did use gendoxy and doxymacs. I had ...
0
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0answers
72 views

irony-mode producing too many errors

I am trying to use irony-mode with my project. I have installed the irony server using irony-install-server. I also have a CMakeLists.txt to produce the makefile for my project along the compile ...
1
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0answers
40 views

Is there a package that show the value of constant variables? C/C++

I would like some package that show the variable value when I put cursor on it. The behavior that I expect can be seen in the image below. The image below is in vscode, I would like some package that ...
0
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0answers
43 views

company is not showing popup complete in c/c++

This is my company config The problem is that with python or lisp when I start to type the popup is shown immediately, but in C/C++ this don't occur. However if I type C-n or C-p the completition is ...
0
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0answers
47 views

C++ Windows Compilation Error/Warning Regexp

I am trying to setup a compile for Emacs on Windows using the CL C++ compiler provided by Windows with Visual Studio 2017. https://imgur.com/a/M80uTWH as can be seen from the above image, however, ...
0
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1answer
74 views

How to hide header line in C++ mode?

I really don't want emacs to show me which function the pointer is currently inside. (See the photo) What is the name of that frame? How can I remove it or make show an empty line? I am using Emacs ...
1
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0answers
62 views

How to fix indentation of C++ methods with ref-qualifiers?

Emacs in its default configuration seems to have trouble indenting C++ methods with reference qualifiers (& and &&). For example: struct foo { void a_method() && { ...
2
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0answers
199 views

Valgrind interface for emacs

Is there an interface similar to 'gdb-mi' for using Valgrind in emacs? What are some ways to use Valgrind inside emacs?
0
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1answer
181 views

cmake-ide defining variables

I have a project I build using cmake. To build this project, I need to define several options like -DPRODUCT=amd64 -DXML_DIR=/opt/xml_database Normally, I either pass these as -D or configure them in ...
4
votes
1answer
160 views

Is there a way to disable multi-line string literals in c++-mode?

Suppose I have a short string in C++ and I accidentally delete the double quote that ends it. What Emacs does is highlight the rest of the code as a single very long string, which messes up all the ...
2
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1answer
76 views

autofill a cpp file based on the .h file

suppose I have x.h class X { void f(); void g(); } in x.cpp #include "x.h" can I just entry a command with "X" as a parameter, then I can get void X::f() {} void X::g() {}
2
votes
1answer
99 views

Emacs indents C++ functions in structs in an unexpected way

Emacs indents functions in structs in the following way: struct A { int a() { return 1; } int b() { return 2; } } int c() { return ...
6
votes
1answer
4k views

lsp-mode: How to use built-in clangd client?

I'm trying to use lsp-mode (together with company-lsp) for auto completion in C++. According to the docs[0], recent lsp-mode includes clangd support, so I should be all set when I do (require 'lsp-...
0
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0answers
51 views

Too much time spent for emacs to open cpp in the project

I use ggtags in order to improve my efficiency. I follow the manual to setup emacs environment. https://tuhdo.github.io/c-ide.html However, during editing the cpp files in the projects. Chance are ...
1
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0answers
277 views

Tools for refactoring c++ code

What tools do you use to refactor c++ code? For example, how do you rename a variable or function that is spread across files? If the problem isn't language specific, there are text-based tools that ...
1
vote
1answer
112 views

Problem debugging in `gud-mode' (M-x `gdb' with `many-windows' enabled)

I'm debugging a large codebase (written in C++). Everything works perfectly if I run gdb from a regular terminal as follows: $ gdb <program-name> Reading symbols from <program-name>......
1
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0answers
159 views

c++ mode indentation

If we have a class like the one below emacs is indenting the : (to the initialization list). To be able to match some other editor, is it possible in emacs to indent the : like below? class Test { ...
0
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2answers
96 views

How to configure C-M-q and TAB key to expand pre-existing TAB characters into spaces in C/C++ files

In C and C++ files, I want to configure the mode so that any time I request indentation, that it will always expand all of the embedded TAB characters in indentation (at the start of the line, and no ...
2
votes
1answer
346 views

What does the `/l` mean in the mode `C++/l` mean?

Just a simple question with more than likely a simple answer: What does the /l mean in the mode C++/l mean?
1
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1answer
187 views

Show constructor arguments for c++

Is there a package that can tell me the arguments for c++ constructor? class T1 { public: T1(int x, int y); }; T1::T1(int x, int y) { std::cout << x+y << std::endl; } ...
2
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0answers
359 views

Navigate C/C++ Source Code with Emacs [closed]

So, i'm finally starting to work with a multi-file Project in C++ and am in need for smart navigation and completion! So far, i've used company-mode (with irony and company-headers), which is great if ...
2
votes
1answer
368 views

how to call a c++ function from elisp

initially, i'am new to emacs. So I have little expierience with emacs. In past I used Visual Basic or VBA to work with the Output from some .dll. Now I'am working a little with emacs/elisp. My ...
6
votes
2answers
370 views

C++ mode: smartly use /*…*/ for comment-dwim

I want to adjust the behavior of comment-dwim when editing c++ files: When a region is selected that either starts or ends in the middle of a line I would prefer /* ... */ comments. For the other ...
1
vote
1answer
496 views

Extra indentation for argument lists beginning on a new line

I'm fine-tuning my C++ style using c-add-style, but I've reached an impasse where I cannot convince Emacs to (extra) indent arguments where the first argument starts on a new line. When I'm forced to ...
0
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1answer
147 views

CEDET semantic-complete-jump customization

When I search through project via semantic-complete-jump and tag is not unique (its defined in multiple places), I must hit <tab> to iterate through all possible places. Problem is, I horribly ...
1
vote
1answer
107 views

How to indent c++ “special” source lines that don't end with semicolons

I'm working with a system that uses special macros a lot. For instance: class UDSSLib : public UFunctionLibrary { GENERATED_BODY() void foo(); int i; } The problem is the GENERATED_BODY() line....
3
votes
0answers
1k views

Spacemacs C++ debugging?

What tools are you using for setting Breakpoints visualize Variables within Spacemacs? I had a look at gdb but it felt awkward to set the breakpoints separated from the source files. I would like to ...
5
votes
2answers
10k views

How to compile and run a C++ file? [closed]

I don't know how to compile and run a C++ file in GNU Emacs. I searched on the various sites and stackexchange network, but from them what I understood was write something like make compile, and I don'...
1
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0answers
40 views

Hide region from syntax highlighting and indentation

c++-mode does not handle the C++17 R"delim()delim" string literals. Is there a way to mark a region (via comments?) so it will not be syntax highlighted and will not confuse the indenter?
1
vote
2answers
294 views

What is the good resource for getting started using EMACS? [duplicate]

I have not used EMACS seriously in 20 years. I work on a Mac and am a vi/Eclipse person now. I want to switch back to EMACS for C and C++ programming. When I was researching EMACS add-on packages ...
1
vote
2answers
349 views

Org-babel. :flags in C code blocks dont work correctly anymore

I'm trying to run current code block #+HEADERS: :includes <math.h> <stdio.h> :flags -lm #+HEADERS: :var x=1.0 :var y=4.0 :var z=10.0 #+begin_src C :tangle trying double pi = 4*atan(1); ...
1
vote
1answer
240 views

trouble with flycheck-gcc-language-standard variable

I am attempting to use Directory-Variables in order to set the flycheck-gcc-language-standard variable. I used: M-x add-dir-local-variable RET c++-mode RET flycheck-gcc-language-standard RET "c++11" ...
1
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0answers
20 views

Personalize indentation for new C++ language features [duplicate]

I'm starting to use C++-17, and one of the new features is if constexpr, which breaks completely the usual if identation: int main() { if constexpr(true) { return 1; } else { ...
0
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1answer
81 views

Is it possible to retain outline overlay when switching modes

I want to switch between org-mode and c++-mode on top of a single file. I use org-mode syntax inside c++ comment blocks. In Org-mode I have foldable sections while in c++-mode I use hide/show for ...
10
votes
1answer
521 views

formatting constexpr if in c++-mode

I recently started using C++17, which brings constexpr if. This however screws up c++-modes default indentation. // emacs 25.3.2 with --no-init if constexpr (n == 1) { // Why? } else if ...
1
vote
2answers
2k views

How to run C/C++ code in Org Babel?

I'm trying to execute C and/or C++ snippets in Org Babel. For example, I want to be able to execute the following snippet with C-c C-c: #+begin_src C printf ("Hello World!"); #+end_src The ...
-1
votes
1answer
2k views

Auto format messy code

I am currently learning C++ and I am in the process of configuring Emacs as my C++ IDE. I am reading a PDF guide and copying code into my Emacs buffer. However upon pasting the code the formatting is ...
3
votes
2answers
527 views

automatically close type parens in C++

Does anybody know of a way or a package that can recognize < and > when occuring in template contexts and automatically writes a > either right after the < or after the selected region ...
0
votes
1answer
52 views

Linking Multiple Implementation Files in C on Emacs

I need help with linking multiple c source code files on emacs. Could anyone show me the way on how to work this out? Thanks!