Package: libc++-helpers
Version: 3.5-1
Severity: normal
Dear Maintainer,
The g++-libc++ script generally seems to work, but using the -pthread
option results in link errors like:
$ g++-libc++ -o conftest -std=c++11 -Wall -Wextra -Winit-self
-Wdouble-promotion -pedantic-errors -Wno-long-long -pthread conftest.cpp -lm
/usr/bin/ld: /tmp/cckd9zJb.o: undefined reference to symbol
'pthread_setspecific@@GLIBC_2.2.5'
//lib/x86_64-linux-gnu/libpthread.so.0: error adding symbols: DSO missing
from command line
This is easy to fix, just by adding -lpthread as the gcc driver
normally does when given -pthread.
The following replacement "g++-libc++" script works for me (and C++
threading etc works fine):
#!/bin/sh
cxx_libs="-lc++"
c_libs="-lc -lgcc_s"
pthread_libs="-lpthread $c_libs"
libs="$cxx_libs $c_libs"
for i; do
if test x"$i" = x"-pthread"; then
libs="$libs $pthread_libs"
break
fi
done
gcc -std=c++0x -nodefaultlibs $libs -isystem/usr/include/c++/v1 "$@"
Thanks,
-miles
-- System Information:
Debian Release: jessie/sid
APT prefers unstable
APT policy: (500, 'unstable'), (500, 'testing'), (500, 'stable'), (101,
'experimental')
Architecture: amd64 (x86_64)
Foreign Architectures: i386
Kernel: Linux 3.14-2-amd64 (SMP w/4 CPU cores)
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