-E not showing anything extra when using code::blocks and GCC?
I build with code::blocks in Linux no problem, but I need to debug a project includes chain and defines, so I looked up online and said to use -E but adding that to "Other Compiler Options" doesn't...
View Articleundefined reference to `sqlcxt'
Trying to compile some C code (a simple select * from dual with oracle (11g) db connection on Linux, generated from .pc thru proc command) through the gcc command and I always get an error. undefined...
View Articleusing gcc __attribute__((__cdecl__)) still results with ld "undefined symbol"
Have an existing .asm source module setup for the standard cdecl naming and calling convention that is built with yasm for an elf32 target. The .asm source can be used across different platforms and...
View ArticleMultiple definition of function when compiling object files
I am trying to use a makefile to compile code that's in multiple files into a single executable.I first compile my code into object files placed into a bin directory then I try and compile them...
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Why does my VSCode debugger not stop at breakpoints when debugging C files...
I have configured launch.json and tasks.json in VSCode to compile and debug C files using GCC and GDB on Windows. The code compiles and executes successfully, but the debugger does not stop at the...
View ArticleGCC Absolute Location Data Placement & Potential Conflict With ROM
Let's say my device comes with pre-loaded data (4 bytes) in ROM at 0x08016F111. I am trying to preserve and access the data in that address in my application. To do this, I am placing a variable at an...
View Article‘INT_MAX’ not declared error in 3-rd party projerct [closed]
I'm trying to compile some 3-rd party project ([FreeFT][1]). I've installed all required dependencies but when i issue make game this error error: ‘INT_MAX’ was not declared in this scope occurs for...
View ArticleWhy gcc can't inline function pointers that can be determined?
The following program compiled under gcc 4.6.2 on centos with -O3:#include <iostream>#include <vector>#include <algorithm>#include <ctime>using namespace std;template...
View ArticleFailed to build native gem extensions on Ubuntu 24.04 emulating arm64 with...
I am building a Ruby on Rails project into docker images with GitHub Actions: https://github.com/havenweb/haven/blob/master/.github/workflows/docker-image.ymlThis has worked great for a while, but on...
View ArticleParameter passing for argument when C++17 is enabled changed to match C++14
I have a minimal reproducible example for the issue here.It generates the following note on Linux ARM 64-bit GCC 11.2 compiler.<source>: In function 'void a(Color)':<source>:19:6: note:...
View ArticleHow can I suppress certain ABI change notes (embedded C++)?
In my project, I am getting many warnings of the form "note: parameter passing for argument of type 'SomeClass<int, float>' when C++17 is enabled changed to match C++14 in GCC 10.1".This occurred...
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Failed to download error while trying to install gcc compiler
I am new to C++ and want to learn it.I tried to follow the instructions here to install the gcc compiler.While typing pacman -S mingw-w64-x86_64-gcc in the MSYS Shell, I get the following error and...
View ArticleWhy does gcc generate different code for s->a[i] and *(s->a+i)?
I compile this with gcc -O1:#include <stdint.h>struct mystruct{ uint32_t arr[1]; uint32_t something_after_arr;};uint32_t sum1(const struct mystruct *s,uintptr_t n){ uint32_t result=0;...
View ArticleDelete dynamically allocated memory twice?
First I'd like to point out that I'm using a GNU GCC compiler. I'm using Code::Blocks as my IDE so I don't have to type in all the compiler junk into the Windows DOS command prompt. If I could be more...
View ArticleWhy gcc -O0 allocating extra space for local variable (16 instead of 8 bytes)?
I have written simple function in C,void GetInput(){ char buffer[8]; gets(buffer); puts(buffer);}When I disassemble it in gdb's disassembler, it gives following disassembly. 0x08048464 <+0>: push...
View ArticleHow to compile cmake Werror project with a newer compiler?
I am trying to build an old version of opencv (https://github.com/opencv/opencv/archive/3.4.16.zip). The repo uses -Werror=all or something. On my computer with Ubuntu 22.04 with gcc 11.4, cmake -D...
View ArticleHow -fomit-frame-pointer gcc option could make debugging impossible?
GCC online doc - 3.10 Options That Control Optimization affirm that -fomit-frame-pointer gcc option can make debbuging impossible.-fomit-frame-pointerDon't keep the frame pointer in a register for...
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Getting a Visual Studio Code launch error while trying to compile/run c++...
I am attempting to get back into C++ programming and I am trying to (and failing) setup for C++ in visual studio code.I followed the documentation per the visual studio documentation and everything...
View ArticleOut of memory building Yocto with 32G of RAM
While building boot2qt using bitbake and Yocto, the build fail due to some sort of lack of memory.What is strange is that I have 32G of RAM on this desktop.This issue was diagnosed because of the...
View ArticleHow to correctly determine at compile time that _Float16 is supported?
I am trying to determine at compile time that _Float16 is supported:#define __STDC_WANT_IEC_60559_TYPES_EXT__#include <float.h>#ifdef FLT16_MAX_Float16 f16;#endifInvocations:# gcc trunk on linux...
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