https://gcc.gnu.org/bugzilla/show_bug.cgi?id=67116
Bug ID: 67116
Summary: incorrect detection of thread model when
cross-compiling the tool chain
Product: gcc
Version: 5.2.0
Status: UNCONFIRMED
Severity: normal
Priority: P3
Component: libstdc++
Assignee: unassigned at gcc dot gnu.org
Reporter: sliwa at ifpan dot edu.pl
Target Milestone: ---
The configure script detects the thread model of the CXX compiler. When
building the tool chain it is the compiler for the host rather than for the
target. These are different when cross-compiling.
For example: I am on Linux; I have built a cross compiler to MinGW64 which uses
Win32 threads; and I want to use it to cross-compile a native MinGW64 compiler
for applications using POSIX threads. I such a situation libstdc++ detects
Win32 thread model and builds without thread support.
