Skip to content
GitLab
  • Menu
Projects Groups Snippets
  • /
  • Help
    • Help
    • Support
    • Community forum
    • Submit feedback
    • Contribute to GitLab
    • Switch to GitLab Next
  • Sign in / Register
  • eigen eigen
  • Project information
    • Project information
    • Activity
    • Labels
    • Members
  • Repository
    • Repository
    • Files
    • Commits
    • Branches
    • Tags
    • Contributors
    • Graph
    • Compare
    • Locked Files
  • Issues 661
    • Issues 661
    • List
    • Boards
    • Service Desk
    • Milestones
    • Iterations
    • Requirements
  • Custom issue tracker
    • Custom issue tracker
  • Merge requests 20
    • Merge requests 20
  • CI/CD
    • CI/CD
    • Pipelines
    • Jobs
    • Schedules
    • Test Cases
  • Deployments
    • Deployments
    • Environments
    • Releases
  • Packages & Registries
    • Packages & Registries
    • Package Registry
    • Container Registry
    • Infrastructure Registry
  • Monitor
    • Monitor
    • Incidents
  • Analytics
    • Analytics
    • Value stream
    • CI/CD
    • Code review
    • Insights
    • Issue
    • Repository
  • Snippets
    • Snippets
  • Activity
  • Graph
  • Create a new issue
  • Jobs
  • Commits
  • Issue Boards
Collapse sidebar
  • libeigenlibeigen
  • eigeneigen
  • Issues
  • #1468
Closed
Open
Created Dec 04, 2019 by Eigen Bugzilla@eigenbzReporter

Cross-compilation failure with qcc for QNX due to missing header inclusion

Submitted by Antonio El Khoury

Assigned to Nobody

Link to original bugzilla bug (#1468)
Version: 3.3 (current stable)
Operating system: Other UNIX-like

Description

When cross-compiling from Ubuntu 14.04 to QNX 6.5.0 using qcc (based on gcc 4.4.2), I get the following build errors such as these ones:

/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/arch/CUDA/Half.h: In function 'Eigen::half Eigen::half_impl::log(const Eigen::half&)':  
/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/arch/CUDA/Half.h:395: error: '::logf' has not been declared  
/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/arch/CUDA/Half.h: In function 'Eigen::half Eigen::half_impl::log10(const Eigen::half&)':  
/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/arch/CUDA/Half.h:402: error: '::log10f' has not been declared  
/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/arch/CUDA/Half.h: In function 'Eigen::half Eigen::half_impl::sqrt(const Eigen::half&)':  
/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/arch/CUDA/Half.h:405: error: '::sqrtf' has not been declared  
  

/home/antonio/Public/install/QCC/include/eigen3/Eigen/src/Core/util/Memory.h:496: error: 'memcpy' was not declared in this scope

  
I managed to fix these errors with this patch, but I don't know if it's the best solution:  
  

diff -ru eigen3.orig/Eigen/src/Core/arch/CUDA/Half.h eigen3/Eigen/src/Core/arch/CUDA/Half.h
--- Eigen/src/Core/arch/CUDA/Half.h 2017-09-14 17:53:15.318720104 +0200
+++ Eigen/src/Core/arch/CUDA/Half.h 2017-09-14 18:05:20.774726963 +0200
@@ -42,6 +42,7 @@
#define EIGEN_EXPLICIT_CAST(tgt_type) operator tgt_type()
#endif

+#include <math.h>

namespace Eigen {

diff -ru eigen3.orig/Eigen/src/Core/util/Memory.h eigen3/Eigen/src/Core/util/Memory.h
--- Eigen/src/Core/util/Memory.h 2017-09-14 17:53:15.318720104 +0200
+++ Eigen/src/Core/util/Memory.h 2017-09-14 18:13:17.850731474 +0200
@@ -20,6 +20,8 @@
#ifndef EIGEN_MEMORY_H
#define EIGEN_MEMORY_H

+#include <string.h>
+
#ifndef EIGEN_MALLOC_ALREADY_ALIGNED

// Try to determine automatically if malloc is already aligned.

Edited Dec 05, 2019 by Eigen Bugzilla
Assignee
Assign to
Time tracking