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[patch] Extend AC_PROG_CXX to check for standards conformance
From: |
Roger Leigh |
Subject: |
[patch] Extend AC_PROG_CXX to check for standards conformance |
Date: |
Sun, 20 Jan 2013 21:27:05 +0000 |
User-agent: |
Mutt/1.5.21 (2010-09-15) |
Patch attached. Probably not in its final form, but I hope
it will be useful as a basis for discussion.
This is like the existing C89/99/11 checks, but for C++.
In this patch, I've implemented three checks:
AC_PROG_CXX_CXX98
AC_PROG_CXX_CXX98TR1
AC_PROG_CXX_CXX11
and AC_PROG_CXX will try them in the order
AC_PROG_CXX_CXX11, AC_PROG_CXX_CXX98TR1, AC_PROG_CXX_CXX98
in order to put the compiler in the highest available mode
by default. Each one performs a set of language and/or
library tests for each standard version.
Note that like the C equivalents, these are marked deprecated
and are not usable in their own right. I'm still of the opinion
that it's useful to restrict the compiler to a minimum standard
so that you can
- prevent the use of features you don't want to use
- ensure that the features you do want are present
So ideally, I'd like to re-enable the C and C++ standard-
specific checks, if the consensus is that these remain useful,
and also add AC_PROG_CC_C11, which is currently missing.
Other points for discussion:
- The flags for non-GCC compilers were obtained from online
documentation. They are untested, and may be wrong; they
are certainly not complete since I don't use non-GCC
compilers myself. Fairly trivial to test and update if
anyone has access to such compilers.
- The feature tests are restricted to those which pass with
GCC 4.7. Depending upon which other compilers we want to
put into "C++11 mode", this test set may need reducing to
the common set which are usable across different compilers
and/or compiler versions.
I've not updated the manual yet; I'll do this if people are
generally happy with things.
Kind regards,
Roger
--
.''`. Roger Leigh
: :' : Debian GNU/Linux http://people.debian.org/~rleigh/
`. `' schroot and sbuild http://alioth.debian.org/projects/buildd-tools
`- GPG Public Key F33D 281D 470A B443 6756 147C 07B3 C8BC 4083 E800
0001-AC_PROG_CXX-Add-checks-for-C-11-C-98TR1-and-C-98.patch
Description: Text Data
- [patch] Extend AC_PROG_CXX to check for standards conformance,
Roger Leigh <=
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Paul Eggert, 2013/01/21
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Roger Leigh, 2013/01/21
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Paul Eggert, 2013/01/21
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Roger Leigh, 2013/01/21
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Miles Bader, 2013/01/21
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Paul Eggert, 2013/01/22
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Roger Leigh, 2013/01/22
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Roger Leigh, 2013/01/28
- Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Paul Eggert, 2013/01/29
Re: [patch] Extend AC_PROG_CXX to check for standards conformance, Roger Leigh, 2013/01/21