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freebsd/share
Enji Cooper e8067928ff Standardize -std=c++* as CXXSTD`
CXXSTD was added as the C++ analogue to CSTD.

CXXSTD defaults to `-std=c++11` with supporting compilers; `-std=gnu++98`,
otherwise for older versions of g++.

This change standardizes the CXXSTD variable, originally added to
googletest.test.inc.mk as part of r345203.

As part of this effort, convert all `CXXFLAGS+= -std=*` calls to use `CXXSTD`.

Notes:

This value is not sanity checked in bsd.sys.mk, however, given the two
most used C++ compilers on FreeBSD (clang++ and g++) support both modes, it is
likely to work with both toolchains. This method will be refined in the future
to support more variants of C++, as not all versions of clang++ and g++ (for
instance) support C++14, C++17, etc.

Any manual appending of `-std=*` to `CXXFLAGS` should be replaced with CXXSTD.
Example:

Before this commit:
```
CXXFLAGS+=	-std=c++14
```

After this commit:
```
CXXSTD=	c++14
```

Reviewed by:	asomers
Approved by:	emaste (mentor)
MFC after:	1 month
MFC with:	r345203, r345704, r345705
Relnotes:	yes
Tested with:	make tinderbox
Differential Revision:	https://reviews.freebsd.org/D19732
2019-03-29 18:45:27 +00:00
..
colldef Add ga_IE.UTF-8 locale. 2018-11-26 19:39:49 +00:00
ctypedef Add ga_IE.UTF-8 locale. 2018-11-26 19:39:49 +00:00
dict
doc
dtrace
examples Catch up with Clang 8.0. 2019-03-21 21:45:02 +00:00
i18n
keys
man Add man page for VOP_FDATASYNC(9) 2019-03-29 02:44:20 +00:00
misc SZ has been known as Eswatini since April 2018 (formerly Swaziland). 2019-03-26 09:46:17 +00:00
mk Standardize -std=c++* as CXXSTD` 2019-03-29 18:45:27 +00:00
monetdef Add ga_IE.UTF-8 locale. 2018-11-26 19:39:49 +00:00
msgdef Add ga_IE.UTF-8 locale. 2018-11-26 19:39:49 +00:00
numericdef Add ga_IE.UTF-8 locale. 2018-11-26 19:39:49 +00:00
security
sendmail
skel Make sh(1) support \u in PS1. This removes one fork/exec on interactive 2019-01-24 11:59:46 +00:00
snmp
syscons
tabset
termcap termcap: Add an entry for kitty 2019-02-12 05:15:36 +00:00
tests
timedef Fix various issues with Chinese locales: 2018-12-30 23:04:02 +00:00
vt Add uk.macbook.kbd keymap (vt) 2018-12-11 02:14:40 +00:00
zoneinfo
Makefile
Makefile.inc