Version 5.x of GCC (GNU Compiler Collection).
Questions tagged [gcc5]
76 questions
2
votes
1 answer
enable fpu support for aarch64 (armv8-a) on gcc version 5.0.1
I am measuring the GFLOPS performance of the Cortex-a57 with the HPLinpack benchmarks and it barely achieves 1 FP/cycle (considering ~2.4 GFLOPS @ 2.4 GHz). Since the old compiler (gcc 4.9.1) complained with several version of the -mfpu= option, I…
charlie_bronx_
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2
votes
1 answer
incomplete type for std::unordered_set compiling error in g++5, compiles in clang++
Consider the code related to a previous SO question C++ cyclic dependency confusion with adjacency list representation
#include
#include
class Node;
class Hash {
public:
std::size_t operator()(const Node &node)…
vsoftco
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1
vote
1 answer
nvcc (cuda8, gcc 5.3) no longer compiles with -O1 on Ubuntu 22.04
I have a CUDA-8 program which compiled (nvcc) well 7 months ago on Ubuntu 22.04, following this procedure, the underlying compiler being gcc (Ubuntu 5.3.1-14ubuntu2) 5.3.1 20160413.
After (not sure when) I upgraded some packages on Ubuntu 22, the…
ferdymercury
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1
vote
2 answers
why does it compile error when i only #include
i upgrade gcc to 5.4, it seems to be ok except math.h
when i write a hello.cpp like the following:
#include
int main(){return 0;}
then i compile the above cpp with gcc 5.4, g++ 5.4
g++ hello.cpp
errors happen
In file included from…
wallace000
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1
vote
0 answers
How to fix gcc include path search order problem (input/output error)?
One of our Ubuntu 16.04 systems (gcc 5.4.0) is failing a compilation that previously succeeded. The failure is:
$ g++ -c -std=c++14 -Wall -pedantic -m64 -march=native -I../Kernel -I/net/simdata/Hudson_OpenSourceLibs/Boost/ -fpic -O3…
DavidA
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1
vote
1 answer
std::thread weak when using -static-libstdc++, thus causing crash at runtime
I need to build a portable shared object, which is a plugin for another software on Linux. I did some amount of reading on the subject, came down to the conclusion, that I should build a sysrooted gcc (gcc 5.4.0 if it matters) with a decently old…
Rudolfs Bundulis
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1
vote
1 answer
Using archive file for compiled object seems to break compilation
I have a large project with a custom Makefile building everything. This is for an ARM Cortex-M0.
One of the steps is to compile a Newlib syscalls.c into syscalls.c.o. That gets dumped into an archive file newlib.a which in turn is linked to the…
Cameron Tacklind
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1
vote
1 answer
error: 'log2' is not a member of 'std'
I'm not sure what I am seeing here. The test results below are from an old PowerMac G5 running OS X 10.5.8. Its still around for testing under the big-endian PowerPC cpu. The compiler is GCC 5.4, and its provided by MacPorts.
The test program is…
jww
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1
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1 answer
Can there be conflict between `-march` and instruction set switches?
I am compiling an example program with the following command:
$ gcc -march=i386 -mtune=i386 -mmmx -msse4 -m3dnow -m32 -o hello.exe hello.c
Questions:
Why doesn't GCC complain that the switches for enabling MMX, SSE4 and 3DNow! are incompatible…
user7023624
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1
vote
0 answers
Homebrew GCC5 Installation error on Mac OSX 10.9.3
I'm trying to install gcc5 on OSX 10.9.3 (Mavericks) using homebrew (brew install gcc5 ) and getting the following errors. I'm able to install the same on OSX 10.11.1 (El Capitan) on a separate machine. However due to other software compatibility…
Pal
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1
vote
1 answer
gcc Compiler Segmentation Fault When Assigning from Value Captured Variable to Lambda Parameter
I was working on this answer and wrote the code:
bool generate(vector& temp, int& target, const size_t width, const size_t i) {
const auto replacement = temp[i];
const auto result = target > replacement;
if (result) {
…
Jonathan Mee
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1
vote
0 answers
Compiling LLVM 3.3 with GCC5, undefined references to c11 type signatures
I'm having trouble compiling my project to use LLVM 3.3* with GCC5. I get undefined references, such as `llvm::sys::getDefaultTargetTripleabi:cxx11'
The abi tag indicates it's an issue of mismatched ABI with GCC5. I know there's something I can do…
edA-qa mort-ora-y
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1
vote
1 answer
Install GCC 5.X on Xcode 6
I need to use/integrate GCC 5.X (in my case 5.3, and it is already installed) on Xcode 6.2.
I've found a lot of outdated tutorials about GCC 4.X and Xcode 5 (or lower), but all of them are outdated and do not work anymore.
I've also found this…
FiReTiTi
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1
vote
1 answer
How to configure Qt to build all modules?
I am following the guide to build Qt from sources, but the build seems to be incomplete, I am building with the following configuration:
configure -prefix E:\Qt57b_static_mingw5_64 -release -developer-build
-opensource -c++std c++1z -static…
IvanB
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1
vote
1 answer
Runtime error [abi:cxx11] when compile with g++-4.9 on Ubuntu 15.10
I recently updated Ubuntu from 15.04 to 15.10. One of the major differences between these versions is the update of the default gcc version from gcc-4.9 -> gcc-5. The library I'm developing has been written and compiled for gcc-4.9, and relies on…
Dreyrden
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