Custom handling of memory reads and writes in C
I am working on writing my own malloc and using the LD_PRELOAD trick to use it. I need to be able to perform custom functionality for every memory access to the heap, both reads and writes (performance...
View Articleimplicit declaration of function ‘_beginthread’ when call go library from c code
i want to call go method in c code os is windows10 i use Cygwin64 Terminalmain.gopackage main import "C" func main() {} //export number_add_mod func number_add_mod(a, b, mod C.int) C.int { return (a +...
View Articlegetting error: expected declaration specifiers or '...' before string constant
I am trying to create a log function that will take the log type, msg and will add file name, function name, line from where the log function was called. I have created the following test code but...
View ArticleGLIBCXX_3.4.21 not defined in file libstdc++.so.6 with link time reference
Apologies, I understand questions very similar to this have been asked relatively often, although none of the solutions seem to work for me.When attempting to run any c++ code of a reasonable...
View ArticleGCC DLL forwarded export using full file path
I'm trying to create a DLL forwarded export that specifies a absolute path. I've confirmed that doing so without a path works:asm (".section .drectve"); asm (".ascii \"...
View ArticleClang vs GCC for my Linux Development project
I'm in college, and for a project we're using C. We've explored GCC and Clang, and Clang appears to be much more user friendly than GCC. As a result, I'm wondering what the advantages or disadvantages...
View ArticleCompiling C and C++ files together using GCC
I'm trying to compile C and C++ sources together using GCC.gcc -std=c++0x test.cpp -std=c99 test.c -lstdc++Now, this works fine, except that I get two warnings.cc1plus: warning: command line option...
View ArticleHow to use the __attribute__((visibility("default")))?
Reading Visibility in the GNU wiki, it is clear. Taking this example from C++ Tutorials// classes example #include <iostream> using namespace std; class Rectangle { int width, height; public:...
View ArticleCan't compile the TL-WR841NV14(US) firmware
I've a TL-WR841NV14(US) router.So, I've downloaded the GPL code from there official website. And then I've tried to compile the the firmware as they told in the README file.But it didn't worked at...
View ArticleCan I use Preprocessor Directives in .ld file
Can I use Preprocessor Directives in .ld file? I need to to use one of two sets of .ld file and wants to let Build engine deside that using macro, Can I do that?
View ArticleCompile error: "g++: error trying to exec 'cc1plus': execvp: No such file or...
When I compile C/C++ program with popen in php... I got this error:g++: error trying to exec 'cc1plus': execvp: No such file or directory but if I run php code in shell.. it works fine..in Arch...
View ArticleCUDA incompatible with my gcc version
I have troubles compiling some of the examples shipped with CUDA SDK. I have installed the developers driver (version 270.41.19) and the CUDA toolkit, then finally the SDK (both the 4.0.17...
View ArticleHow to resolve GCC syntax error when installing using pip?
I am trying to install pyq for Python using pip. However, it fails during the build process on the following command:C:\FAST\anacondaforPython3.5.2\4.1.1\Scripts\gcc.bat -shared -s...
View ArticleI can install python package successfully but can not import it. Symbol not...
I successfully installed pysurvival using homebrew, pip, and gcc, but when I try to import pysurvival into jupyter notebook as so:import pysurvival from pysurvival.models.simulations import...
View Articlegcc compile error: cast specifies array type
The following code is perfect valid,int *ia = (int[]){1,3,5,7}; but when I compile the next line of code,char *p = (char[]) "abc"; gcc saystest.c:87: error: cast specifies array type It seems they are...
View ArticleDebug vs Release in CMake
In a GCC compiled project,How do I run CMake for each target type (debug/release)?How do I specify debug and release C/C++ flags using CMake?How do I express that the main executable will be compiled...
View ArticleAllocating through a pointer to a pointer parameter
I have this macro: /* * int callocs(type **ptr, size_t nmemb); * * Safe & simple wrapper for `calloc()`. * * PARAMETERS: * ptr: Memory will be allocated, and a pointer to it will be stored * in...
View ArticleHow to pack Boolean operations using gcc or other compilers?
Intel CPUs are capable of performing 512 or 1024 bitwise operations using vectorized operations. Assume I have a (pseudo)code that looks like this:w0 = i0 & i1 w1 = i1 & i2 w2 = i0 & i3 w3...
View ArticleWhere is the source code of gcc builtins?
gcc provides numerous builtin routines. Where can I find the source code of the builtin routines? I understand that sometimes they might be direct opcodes. This was shown e.g. in Implementation of...
View ArticleDisable assembler warning ".section...
When using MacPorts GCC on OS X and enlisting the Clang Integrated Assembler via -Wa,-q, the assembler produces a stream of warnings for each file. A sampling of the warnings is shown below (so many of...
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