jperkin
commented
9 years ago This looks like it is caused by the default platform change for our 14.4.0 builds onwards. 14.3.x and earlier were built on joyent_20130322T181205Z, whilst 14.4.0 onwards are built on joyent_20141030T081701Z.
The GCC pkgsrc packages for 14.3 and 14.4 are identical, with both containing gcc47-4.7.3nb6, and I've compared lang/gcc47 between both branches to verify there are no changes, but whilst 14.3.0's GCC works correctly, 14.4.2's GCC fails.
/* test.cc */
#include <string>
int main(void)
{
std::string s = std::to_string(4);
}# grep ^Image /etc/product
Image: base64 14.3.0
# pkg_info -e gcc47
gcc47-4.7.3nb6
# g++ -std=c++11 test.cc -o test; echo $?
0# grep ^Image /etc/product
Image: minimal-64-lts 14.4.2
# pkg_info -e gcc47
gcc47-4.7.3nb6
# g++ -std=c++11 test.cc -o test; echo $?
test.cc: In function 'int main()':
test.cc:5:18: error: 'to_string' is not a member of 'std'
1In addition, trying gcc49 on the older platform also works fine:
# grep ^Image /etc/product
Image: base64 14.3.0
# pkg_info -e gcc49
gcc49-4.9.1
# /opt/local/gcc49/bin/g++ -std=c++11 test.cc -o test; echo $?
0This strongly rules out the cause being GCC related, and so I'll start looking into platform changes which may be causing this.
I've got a zone based on: 3f57ffe8-47da-11e4-aa8b-dfb50a06586a standard64 14.2.1 smartos 2014-09-29T13:12:19Z
where I've got g++ 4.7.3 and everything is working as "expected", but today I tried to create a new zone by using "the latest bits" and I'm getting trouble with g++..
I created the zone based on: 0edf00aa-0562-11e5-b92f-879647d45790 base-64 15.1.1 smartos 2015-05-28T17:50:41Z
and the C++11 support seems to be broken.. std::to_string seems to be missing (and there are a number of other functions as well). I've tried g++ 4.7.4, 4.8.4 and 4.9.2 in pkgsrc and they all seem to have the problem.. anyone else seen this?
Try compiling this with g++ -std=c++11 filename
include
int main(void) { std::string s = std::to_string(4); std::stoi(s); std::stof(s); std::stoull(s); return 0; }