gcc version information

compiler versions arb needs to support

Ubuntu version	default or updated system compiler	tested frequently	Comments
10.04 LTS	gcc 4.4.3		(mgg)
12.04 LTS	gcc 4.6.3		(precise vm)
14.04 LTS	gcc 4.8.2	?
	gcc 4.8.4		(trusty vm)
16.04 LTS	gcc 5.3.1	?
	gcc 5.4.0		(xenial vm)
18.04 LTS	gcc 7.3.0	?
	gcc 7.4.0		development
CentOS version
5	gcc 4.4.7
6	gcc 4.4.7
Debian version
7	gcc 4.7.2
8	gcc 4.9.2		(mol)
OSX version
???	clang 4.2.1

Please report if any of these version fails to build.

compiler versions known by the production version of arb (=trunk)

see source:trunk/Makefile#L106​

Note: not all of these versions may be used to compile arb, see next section.

compiler versions not compatible with arb

version	forbidden?	reason
gcc <4.4.3	yes	lowest supported gcc version is 4.4.3 = ubuntu 10.04 system compiler
gcc 4.6.4	yes	fails to compile inplace constructors
gcc 4.8.0	yes	causes undefined behavior on certain uses of bool (see #617)