cypari fails to build on Ubuntu 18.04

[Kevin Horton]

I'm trying to install sage 8.7 from source on Ubuntu 18.04.

cypari fails to build:


gcc -pthread -shared -L/home/kwh/sage-8.7/local/lib -Wl,-rpath,/home/kwh/sage-8.7/local/lib -L/home/kwh/sage-8.7/local/lib -Wl,-rpath,/home/kwh/sage-8.7/local/lib build/temp.linux-x86_64-2.7/cypari2/convert.o -L/home/kwh/sage-8.7/local/lib -L/home/kwh/sage-8.7/local/lib64 -L/home/kwh/sage-8.7/local/lib -lgmp -lpari -lpython2.7 -o build/lib.linux-x86_64-2.7/cypari2/convert.so -lpari
building 'cypari2.gen' extension
gcc -fno-strict-aliasing -g -O2 -DNDEBUG -g -fwrapv -O3 -Wall -Wno-unused -fPIC -I./cypari2 -I/home/kwh/sage-8.7/local/lib/python2.7/site-packages/cysignals -I/home/kwh/sage-8.7/local/include -I/home/kwh/sage-8.7/local/include/python2.7 -c cypari2/gen.c -o build/temp.linux-x86_64-2.7/cypari2/gen.o
gcc: internal compiler error: Killed (program cc1)
Please submit a full bug report,
with preprocessed source if appropriate.
See <file:///usr/share/doc/gcc-7/README.Bugs> for instructions.
error: command 'gcc' failed with exit status 4
Running setup.py install for cypari2: finished with status 'error'
Cleaning up...
Removing source in /tmp/pip-req-build-EhTFza
Removed build tracker '/tmp/pip-req-tracker-rEVd31'
Command "/home/kwh/sage-8.7/local/bin/python2 -u -c "import setuptools, tokenize;__file__='/tmp/pip-req-build-EhTFza/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" --no-user-cfg install --record /tmp/pip-record-dvz_Aw/install-record.txt --single-version-externally-managed --root /home/kwh/sage-8.7/local/var/tmp/sage/build/cypari-2.1.0.p0/inst --compile" failed with error code 1 in /tmp/pip-req-build-EhTFza/
Exception information:
Traceback (most recent call last):
File "/home/kwh/sage-8.7/local/lib/python2.7/site-packages/pip/_internal/cli/base_command.py", line 143, in main
status = self.run(options, args)
File "/home/kwh/sage-8.7/local/lib/python2.7/site-packages/pip/_internal/commands/install.py", line 366, in run
use_user_site=options.use_user_site,
File "/home/kwh/sage-8.7/local/lib/python2.7/site-packages/pip/_internal/req/__init__.py", line 49, in install_given_reqs
**kwargs
File "/home/kwh/sage-8.7/local/lib/python2.7/site-packages/pip/_internal/req/req_install.py", line 791, in install
spinner=spinner,
File "/home/kwh/sage-8.7/local/lib/python2.7/site-packages/pip/_internal/utils/misc.py", line 705, in call_subprocess
% (command_desc, proc.returncode, cwd))
InstallationError: Command "/home/kwh/sage-8.7/local/bin/python2 -u -c "import setuptools, tokenize;__file__='/tmp/pip-req-build-EhTFza/setup.py';f=getattr(tokenize, 'open', open)(__file__);code=f.read().replace('\r\n', '\n');f.close();exec(compile(code, __file__, 'exec'))" --no-user-cfg install --record /tmp/pip-record-dvz_Aw/install-record.txt --single-version-externally-managed --root /home/kwh/sage-8.7/local/var/tmp/sage/build/cypari-2.1.0.p0/inst --compile" failed with error code 1 in /tmp/pip-req-build-EhTFza/
Error: installing with pip2 failed
********************************************************************************
Error installing cypari-2.1.0.p0
********************************************************************************

real 1m54.940s
user 1m44.406s
sys 0m5.612s
************************************************************************
Error installing package cypari-2.1.0.p0
************************************************************************

======
gcc --version
gcc (Ubuntu 7.4.0-1ubuntu1~18.04.1) 7.4.0

======

Any advice is appreciated. If there is no resolution, I'll install sage 8.1 using Ubuntu's packages.

thanks,

Kevin

[Jeroen Demeyer]

Internal compiler error typically means one of the following:
- Running out of memory during compilation
- Buggy compiler
- Hardware problem

So the following questions need to be answered:

1. Is the problem reproducible? What happens when you try again?

2. Is this a machine with little memory or were you doing many things at
the same time (possibly compiling in parallel) such that you could have
run out memory?

[Kevin Horton]

Thanks for the info and advice.

1. The problem is 100% reproducible.  Same result every time.

2. It is quite possible low memory is the issue, as I'm trying to install it on a Linode virtual server with 1 GB RAM.  I'll try upgrading my Linode instance to 2 GB RAM and report back once I know whether that has solved the problem or not.

[Jeroen Demeyer]

On 2019-06-18 15:16, Kevin Horton wrote:
> 2. It is quite possible low memory is the issue, as I'm trying to
> install it on a Linode virtual server with 1 GB RAM.

Yes, that's probably not enough for a big compilation. I would recommend
at least 4GB of RAM, but you may get away with 2GB... at least if you
don't build the documentation: use "make build" to build all of Sage
without the documentation.

[Kevin Horton]

Your assessment was correct. The build has progressed past the original point of failure now that I have increased the RAM to 2GB. I'll increase to 4GB if I get another compiler error.

Thanks for your advice.

Kevin