How to call cuda libraries from OpenACC C++ code by g++?
I want to use cuda libraries (cublas, cusparse cusolver) in OpenACC code by g++-8.Can g++-8 use cuda libraries like PGI?I wrote following code, that needs cublas or cublas_v2.//...
View ArticleRunning openacc -gfortran in cluster
I'm compiling and running a Fortran 90 program using OpenAcc. I was able to run the code with openacc directives in my local PC using PGI compiler. But now I'm trying to run the same program in a...
View ArticleWhy std::size() is not a member of std in gcc 8.2.0
I'm trying to teach myself some C++17.Why is the compiler throwing an error for the below code snippet?#include <iostream> #include <vector> #include <iterator> int main() {...
View ArticleWired iOS crash stack without the called function
the code block below is the crash stack of a iOS APP, which using Cronet.we want to know the exactly crash line in the source code according to the last crash frame 1,as we can see, is the function of...
View Articlenode-gyp build error on arm64 - error: 'WeakCallbackData' in namespace 'v8'...
I am building a js wrapper for cpp using swig. I tried it on fedora and it is working perfectly fine(fedora 30. gcc version 9.1.1). But when I am building same code on arm64 operating system(gcc -...
View ArticleARM softfp vs hardfp performance
I have an ARM based platform with a Linux OS. Even though its gcc-based toolchain supports both hardfp and softfp, the vendor recommends using softfp and the platform is shipped with a set of standard...
View ArticlePreprocessor symbol in library and change the symbols value while using the...
I have a library project with a inline function in my Lib.h: static inline void DoStuff(void) __attribute__ ((always_inline)); static inline void DoStuff(void) { #if(SYMBOL == 1) // Stuff #elif(SYMBOL...
View ArticleHow to enable -Werror using GCC pragma?
I have a few files where i'd like to be strict about warnings, and i use GCC to build my project.I've tried #pragma GCC diagnostic error "-Wall" as per...
View ArticleError while installing whitespace hook for dune
I need to install dune for one of my PDE-lectures and we were given this file as installation:install.sh:# here you may manually define command names # comment out these definitions to overwrite the...
View ArticleExactly what cases does the gcc execstack flag allow and how does it enforce it?
I have some example code here which I'm using to understand some C behaviour for a beginner's CTF:// example.c #include <stdio.h> void main() { void (*print)(); print = getenv("EGG"); print(); }...
View ArticleHow to set gcc to use intel syntax permanently?
I have the following code which compiles fine with the gcc command gcc ./example.c. The program itself calls the function "add_two" which simply adds two integers. To use the intel syntax within the...
View ArticleGCC ARM Os Template function optimization
class GpioF7xx : public Gpio { public: template <uint32_t PIN> static GpioF7xx create(GPIO_TypeDef* base) { static_assert(PIN >= 0 && PIN =< 15, "Gpio pins are only available from 0...
View ArticleHow to interact with RISC-V CSRs by using GCC C code?
this is my first question to be asked here on stackoverflow, so please be kind with me ;)I'm new to RISC-V and low level C coding and I'm wondering how to manipulate the RISC-V CSRs using GCC C code.A...
View ArticleDisabling __tls_get_addr_opt for PPC
I develop software for an embedded device using the PowerPC architecture. Recently we got a new firmware upgrade and the manufacturer has provided a toolchain which is incapable of building runnable...
View ArticleHow to plant my own code at the beginning/end of each function with GCC
GCC (I am using GCC-4.8.5) has the concepts of prologue and epilogue, which are used to generate codes at the beginning and end of each function. I am wondering how to insert my own code into the...
View ArticleIs it possible to enable only specific C++ language features in gcc?
I have a c++14 project that currently targets gcc 7.2, and I am looking to backport code from a project that targets c++17. This project makes extensive use of if constexpr. gcc 7.2 supports if...
View ArticlemacOS Clang C++17 filesystem header not found
I need to write a program using the (experimental) C++17 filesystem library but clang on my Mac (macOS 10.12.03) doesn't seem to have the filesystem header included.Since I'm required to use the C++17,...
View ArticleIs it possible for preprocessor to check if a linker option is used?
I have a timer program which uses clock_gettime. This requires -lpthread option to compile successfully or else it gets undefined reference to 'clock_gettime' error. As so far I explored that we can...
View Articleerror: '__s1_len' undeclared (first use in this function)
I'm trying to compile a really old version of PHP and am getting this error:/tmp/php-5.0.5/ext/openssl/openssl.c:3198:11: error: expected ';' before '__s1_len'...
View ArticleWhen c++ instantiating method?
I am trying to compile this code with gcc and clang:#include <iostream> #include <type_traits> template<int N> struct Test { template<typename = std::enable_if_t<N == 1,...
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