Skip to main content
Software Engineering

Questions tagged [gcc]

Ask Question

GCC is the GNU Compiler Collection. It's the de facto standard C compiler on Linux and supports many other languages and platforms as well.

42 questions
Newest Active Bountied Unanswered
Filter by
Sorted by
Tagged with
0 votes
0 answers
161 views

Recently, I started learning Arm64 assembly. The assembler I'm using is the GNU Assembler (GAS). The version of GAS I'm using is GNU assembler (GNU Binutils for Ubuntu) 2.42. I want to make my code ...
CorkiMain's user avatar
  • 11
-2 votes
1 answer
1k views

I have a large hash, around 6 gigabytes that I load into memory. On my current laptop that I develop from, it really does a number on my system, causing massive amounts of lag while I try to go about ...
Anon's user avatar
  • 3,649
8 votes
1 answer
16k views

I am curious about the Difference between direct and indirect function() calls Could anyone help in the diff analysis ? The c source code could be found at subroutine_direct.c and ...
kevin's user avatar
  • 197
2 votes
3 answers
3k views

With 'global variables', I mean Variables on namespace level Static data members in classes Static variables in functions In a big C++ project I would like to have a mechanism (like a compiler option) ...
Borph's user avatar
  • 131
0 votes
0 answers
143 views

I tested out a few different compiler optimizations on GNU GCC, in the CodeBlocks IDE. With each different optimization I ran the same test: I let my program try to build as big of a tree as it could ...
Inertial Ignorance's user avatar
  • 585
0 votes
0 answers
114 views

I'm in the process of writing a 8 bit cpu emulator and currently have a jump table for different opcodes. I want to move this over to be cycle accurate and was wondering what the best approach would ...
silent's user avatar
  • 176
-1 votes
2 answers
965 views

I have the task to port some code from Visual C++ to gcc. Some calls are gcnew and gcroot to handle managed code inside cpp module. How can these calls be ported to gcc in a fashionable way?
TonyI's user avatar
  • 19
11 votes
2 answers
19k views

I noticed that if I declare a global variable multiple times the compiler does not even output a warning. However if I declare a local variable in a function multiple times, for example, the gcc ...
yoyo_fun's user avatar
  • 2,297
20 votes
2 answers
18k views

GCC is the C compiler. Glibc is the C library. However, isn't it an absolute necessity for a compiler and the standard library bundled together as a C implementation? For example, the C library ...
Michael Tsang's user avatar
  • 859
1 vote
1 answer
2k views

When I try the below code I am not clearly able to analyze malloc api internal calls.What I am not clear is about the system call mmap is called only once for 2 or more malloc calls.If I am assigning ...
Harish's user avatar
  • 119
4 votes
3 answers
7k views

Okies, totally newbie question here. I can read the code, mimic the code and understand the basics to be deadly. But, I never really took the time to understand what ANSI C really meant. I just look ...
Fastidious's user avatar
  • 159
1 vote
1 answer
2k views

So far I was under the perspective that while working in the kernel code, working with memory implies working with long integers and not pointers because dereferencing pointers shouldn't be done in ...
TheMeaningfulEngineer's user avatar
  • 961
13 votes
3 answers
12k views

Since 4.8 release, the C++ compiler GCC (the G++ part of it) is written not in C anymore, but in C++ itself. I have a hypothetical question on this. I wonder how to compile the C++ code of GCC on a ...
danijar's user avatar
  • 846
3 votes
2 answers
2k views

I have a hierarchy of objects, mostly connected by composition. I.e. (not showing the class methods for readability): class A {} class B {A a;} class C {B b;} etc... class Z {Y y;} class Z provides ...
Vorac's user avatar
  • 7,189
6 votes
2 answers
4k views

There are different stages of compilation Such as Preprocessing stage Syntax analysis Semantic analysis Intermediate Code generation Machine Code generation Optimization Linking My question here is ...
Adarsh's user avatar
  • 163
5 votes
2 answers
542 views

When compiling C code with gcc, there are compiler optimizations, some that limit code size and others create fast code. From the -S flag, I see that the -O2/03 generates more assembly than the -Os ...
inixsoftware's user avatar
  • 163
31 votes
3 answers
17k views

I need some opinion. GCC was always a very good compiler, but recently it is losing "appeal". I have just found that on Windows GCC does not have std::thread support, forcing Windows users to use ...
CoffeDeveloper's user avatar
  • 561
4 votes
2 answers
1k views

Based on the discussion around this question. I'd like to know how .so files/the ELF format/the gcc toolchain avoid problems passing classes defined purely in header files (like the std library). ...
Doug T.'s user avatar
  • 11.7k
290 votes
7 answers
453k views

Advanced compilers like gcc compile code into machine readable files according to the language in which the code has been written (e.g. C, C++, etc). In fact, they interpret the meaning of the code ...
Googlebot's user avatar
  • 3,253
1 vote
2 answers
900 views

I need to try the following thing: I would like to compile some simple C code samples and see the assembly listing generated by GCC for IA64 architecture, i.e. I just want to run GCC with the -S ...
KD04's user avatar
  • 11
23 votes
5 answers
22k views

I'm learning C++ and I'm using g++ on Linux for practicing. I want to know if people working as programmers use g++ -pedantic flag and also its importance in real world. What about other compilers, ...
user803563's user avatar
  • 397