Unbreak the Ubuntu 16.04.2 LTS buildbot

[mkoeppe]

Buildbot needs to be configured with

./configure --without-system-gcc)

to force building gcc

CC: @vbraun

Component: build

Issue created by migration from https://trac.sagemath.org/ticket/33888

[mkoeppe]

comment:2

Just why? The default compiler on Debian 9 is supported.

[vbraun]

comment:3

When building with our gcc the build then fails later when trying to compile ncurses: http://build.sagemath.org/#/builders/69/builds/1/steps/10/logs/ncurses

/var/lib/buildbot/slave/sage_git/build/local/bin/g++ -DHAVE_CONFIG_H -I. -I../../c++ -I../include -I../../c++/../include  -D_GNU_SOURCE -DNDEBUG -g -O2  -fPIC -c ../../c++/cursesf.cc -o ../obj_s/cursesf.o
In file included from ../../c++/cursesw.h:36,
                 from ../../c++/cursesp.h:39,
                 from ../../c++/cursesf.h:39,
                 from ../../c++/cursesf.cc:35:
./etip.h:375:33: error: ISO C++17 does not allow dynamic exception specifications
  375 | #define THROWS(s)               throw(s)
      |                                 ^~~~~
../../c++/cursesw.h:777:50: note: in expansion of macro 'THROWS'
  777 |   virtual void   err_handler(const char *) const THROWS(NCursesException);
      |                                                  ^~~~~~
./etip.h:376:33: error: ISO C++17 does not allow dynamic exception specifications
  376 | #define THROW2(s,t)             throw(s,t)
      |                                 ^~~~~
../../c++/cursesp.h:89:32: note: in expansion of macro 'THROW2'
   89 |   void OnError (int err) const THROW2(NCursesException const, NCursesPanelException)
      |                                ^~~~~~
./etip.h:376:33: error: ISO C++17 does not allow dynamic exception specifications
  376 | #define THROW2(s,t)             throw(s,t)
      |                                 ^~~~~
../../c++/cursesf.h:64:38: note: in expansion of macro 'THROW2'
   64 |   inline void OnError(int err) const THROW2(NCursesException const, NCursesFormException) {
      |                                      ^~~~~~
./etip.h:376:33: error: ISO C++17 does not allow dynamic exception specifications
  376 | #define THROW2(s,t)             throw(s,t)
      |                                 ^~~~~
../../c++/cursesf.h:112:39: note: in expansion of macro 'THROW2'
  112 |   inline void OnError (int err) const THROW2(NCursesException const, NCursesFormException) {
      |                                       ^~~~~~
./etip.h:376:33: error: ISO C++17 does not allow dynamic exception specifications
  376 | #define THROW2(s,t)             throw(s,t)
      |                                 ^~~~~
../../c++/cursesf.h:394:39: note: in expansion of macro 'THROW2'
  394 |   inline void OnError (int err) const THROW2(NCursesException const, NCursesFormException) {
      |                                       ^~~~~~
./etip.h:375:33: error: ISO C++17 does not allow dynamic exception specifications
  375 | #define THROWS(s)               throw(s)
      |                                 ^~~~~
../../c++/cursslk.h:120:45: note: in expansion of macro 'THROWS'
  120 |   inline void Error (const char* msg) const THROWS(NCursesException) {
      |                                             ^~~~~~
Makefile:359: recipe for target '../obj_s/cursesf.o' failed
make[6]: *** [../obj_s/cursesf.o] Error 1

[vbraun]

comment:4

Note: has gcc 5.4.0 which will be dropped in #33316

vbraun@k8s:~/Buildbot$ cat /etc/debian_version 
stretch/sid
vbraun@k8s:~/Buildbot$ gcc --version
gcc (Ubuntu 5.4.0-6ubuntu1~16.04.12) 5.4.0 20160609
Copyright (C) 2015 Free Software Foundation, Inc.
This is free software; see the source for copying conditions.  There is NO
warranty; not even for MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.

[mkoeppe]

comment:5

Debian 9 has gcc 6.3.0 as the default gcc.

Your gcc says "Ubuntu 5.4.0-6ubuntu1~16.04.12". That's not Debian.

[vbraun]

comment:6

I guess thats Ubuntu 16.04.2 then, ESM until April 2026

[mkoeppe]

comment:7

Yes, #33316 drops support for ubuntu-xenial with its default toolchain.

[mkoeppe]

comment:8

The upgrade path is to use ubuntu-xenial-toolchain-gcc_9, see #32074.

[vbraun]

comment:9

Still would be nice if your own ncurses would compile with our own gcc... Maybe check #32137?

[mkoeppe]

comment:10

ready for review

[mkoeppe]

comment:11

Is your bot fixed? Then please close the ticket

[mkoeppe]

comment:12

I assume we can close it as outdated

[kwankyu]

comment:13

Replying to @mkoeppe:

I assume we can close it as outdated

It seems Ubuntu 16.04.2 is not there anymore.