How do I find the actual GCC error in compiler output?
I'm trying to compile some old software from source on debian-based linux. The build failed:make[2]: Leaving directory '/home/owner/kallistios/utils/dc-chain/build-gcc-sh-elf-4.7.3' Makefile:871:...
View ArticleGCC reordering up across load with `memory_order_seq_cst`. Is this allowed?
Using a simplified version of a basic seqlock , gcc reorders a nonatomic load up across an atomic load(memory_order_seq_cst) when compiling the code with -O3. This reordering isn't observed when...
View ArticleCompiling C++ in VSCode gives me an undefined reference
normally i use VS19 for C++ programming, but i wanted to try if it works on VSCode on my Macbook, so i wrote i real simple programmmain#include <iostream> #include "test.hpp" using namespace std;...
View ArticleLinking Fortran and C++ binaries using gcc
I can use gcc to make calls between C and C++ or between C and Fortran by using g++ or gfortran, respectively. But if I try to make procedure calls between C++ and Fortran I get errors when compiling...
View ArticleA strange question of transferring a project from debian to ubuntu
I have an ics project assignment which I firstly wrote, compiled and run on the debian. When I try to transfer the project to ubuntu 19.10 and 18.04, I found a Dynamic Link Library wrong of stdio2.h as...
View ArticleHow do I install imagemagick with homebrew?
I'm trying to install Imagemagick on OSX Lion but something is not working as expected.-> brew install imagemagick /usr/local/git/bin/git ==> Cloning https://github.com/adamv/ImageMagick.git...
View ArticleWhat's the right behavior when overloading operator delete without...
The following code behaves differently with clang (version 5.0.0-3~16.04.1 on x86_64-pc-linux-gnu) and gcc (9.2.0).void operator delete(void* ptr) noexcept { std::cout << "overloaded...
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How to configure Visual Studio Code on UBUNTU to compile gstreamer files
I have gstreamer and VSC installed on UBUNTU 18.04, and I can compile and run gstreamer tutorials from system command prompt by using instructions here:...
View ArticleUsing builtin overflow functions with uint64_t types
I am currently writing a program which makes heavy use of the uint64_t type, to enhance compatibility across platforms. As it happens, there are a lot of possibilities for overflows in my program, so I...
View Articledon't understand the difference between "gcc -c file.c" and "gcc -o file.c"...
Command :`gcc -c -Wall hello.c` Here is the error : while calling ./hello.obash: ./hello.o: cannot execute binary file: Exec format error need help please ..
View ArticleCan't find file executable in your configured search path for gnc gcc compiler
My problem is that code::blocks error message tells me that it can't find file executable in the search path for gnc gcc compiler. Although, I don't know what that means. Also I typed out some...
View ArticleWhat is it called when a block returns a value?
I came across this code recently, which doesn't look legal to me (but gcc compiles it). I don't so much mind the construction as want a name for it:#define MAX(a,b) \ ({ \ typeof(a) _a = (a); \...
View ArticleWhat is the execution order of xxxxboard.c in u-boot?
The board.c contains many functions but no main function,and will all functions be executed in order?Is there an order of execution?eg: int get_memory_base_size() int dram_init(void) int...
View ArticleCompiling CMSIS DSP and NN for GCC Linux
I'm trying to find away to Compile CMSIS DSP and NN sources for GCC Linux. I need to do that for the unit test of the project. Does anyone know how to do it?
View ArticleLD_LIBRARY_PATH doesn't seem to work
I'm trying to compile a test file:gcc -o test test.c -lg2c but I get the error:/usr/bin/ld: cannot find -lg2c If I use:gcc -o test test.c -L/usr/lib/gcc/x86_64-redhat-linux/3.4.6 -lg2c then it works...
View ArticleFloating Point Multiply Bug Using gcc 2.7.0 on Amiga with 68881 - Any...
For the heck of it, I decided to see if a program I started writing on an Amiga many years ago and much further developed on other machines would still compile and run on an Amiga (after being...
View ArticleR package installation in Linux
I am trying to install a R package in Ubuntu using the following commands:R CMD INSTALL rpart_4.1-5.tar.gz install.packages("/home/rpart_4.1-5.tar.gz", repos = NULL, type="source") * installing to...
View ArticleMinGW g++: Multiple definition of vsnprintf when using to_string
I just started using MinGW for Windows. When trying to create executable usingg++ a.cpp -o a.exe -std=c++14for the code below:#include <string> using namespace std; int main() { string x =...
View Articlegcc shows different warnings depending on optimisation level
I compiled a C program with -O0 -Wall and then -O1, -O2, -O3 and I received different warning messages, some of them actually important enough that they showed actual bugs (for instance a function...
View ArticleCompiler optimization of strcmp I don't understand, against a constant string
In order to improve my binary exploitation skills, and deepen my understanding in low level environments I tried solving challenges in pwnable.kr, The first challenge- called fd has the following C...
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