From: Jonathan Nieder <jrnieder@gmail.com>
To: "SZEDER Gábor" <szeder.dev@gmail.com>
Cc: git@vger.kernel.org
Subject: Re: On overriding make variables from the environment...
Date: Tue, 16 Oct 2018 14:54:56 -0700 [thread overview]
Message-ID: <20181016215456.GB96853@aiede.svl.corp.google.com> (raw)
In-Reply-To: <20181016184537.GN19800@szeder.dev>
Hi,
SZEDER Gábor wrote:
> Our Makefile has lines like these:
>
> CFLAGS = -g -O2 -Wall
> CC = cc
> AR = ar
> SPATCH = spatch
>
> Note the use of '=', not '?='.
[...]
> I'm not sure what to do. I'm fine with updating our 'ci/' scripts to
> explicitly respect CC in the environment (either by running 'make
> CC=$CC' or by writing $CC into 'config.mak'). Or I could update our
> Makefile to use '?=' for specific variables, but:
That's a good question. I don't have a strong opinion myself, so I
tend to trust larger projects like Linux to have thought this through
more, and they use 'CC = cc' as well. So I'd lean toward the updating
'ci/' scripts approach, to do something like
make ${CC:+"CC=$CC"} ...
(or the equivalent multi-line construction).
That also has the bonus of being explicit.
Just my two cents,
Jonathan
next prev parent reply other threads:[~2018-10-16 21:55 UTC|newest]
Thread overview: 33+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-10-16 18:45 On overriding make variables from the environment SZEDER Gábor
2018-10-16 21:54 ` Jonathan Nieder [this message]
2018-10-16 22:33 ` SZEDER Gábor
2018-10-16 22:40 ` Jonathan Nieder
2018-10-17 14:29 ` SZEDER Gábor
2018-10-18 10:01 ` Johannes Schindelin
2018-10-18 12:49 ` Junio C Hamano
2018-12-20 16:24 ` [PATCH 0/5] travis-ci: build with the right compiler SZEDER Gábor
2018-12-20 16:24 ` [PATCH 1/5] compat/obstack: fix -Wcast-function-type warnings SZEDER Gábor
2018-12-20 23:12 ` Ævar Arnfjörð Bjarmason
2019-01-10 21:22 ` Junio C Hamano
2019-01-11 0:37 ` SZEDER Gábor
2019-01-11 18:03 ` Junio C Hamano
2019-01-11 18:51 ` SZEDER Gábor
2019-01-15 23:55 ` SZEDER Gábor
2019-01-16 1:13 ` Jonathan Nieder
2019-01-17 1:36 ` SZEDER Gábor
2019-01-16 4:16 ` Junio C Hamano
2018-12-20 16:24 ` [PATCH 2/5] .gitignore: ignore external debug symbols from GCC on macOS SZEDER Gábor
2018-12-20 16:24 ` [PATCH 3/5] travis-ci: don't be '--quiet' when running the tests SZEDER Gábor
2018-12-20 16:24 ` [PATCH 4/5] travis-ci: switch to Xcode 10.1 macOS image SZEDER Gábor
2018-12-20 16:24 ` [PATCH 5/5] travis-ci: build with the right compiler SZEDER Gábor
2019-01-03 16:01 ` Johannes Schindelin
2019-01-17 1:29 ` [PATCH v2 0/5] " SZEDER Gábor
2019-01-17 1:29 ` [PATCH v2 1/5] compat/obstack: fix -Wcast-function-type warnings SZEDER Gábor
2019-01-17 1:29 ` [PATCH v2 2/5] .gitignore: ignore external debug symbols from GCC on macOS SZEDER Gábor
2019-01-17 1:29 ` [PATCH v2 3/5] travis-ci: don't be '--quiet' when running the tests SZEDER Gábor
2019-01-17 13:28 ` Johannes Schindelin
2019-01-17 1:29 ` [PATCH v2 4/5] travis-ci: switch to Xcode 10.1 macOS image SZEDER Gábor
2019-01-17 1:29 ` [PATCH v2 5/5] travis-ci: build with the right compiler SZEDER Gábor
2019-01-17 13:44 ` Johannes Schindelin
2019-01-17 14:56 ` SZEDER Gábor
2019-01-18 8:40 ` Johannes Schindelin
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