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.