# [PATCH] Explicitly set X to avoid potential build breakage

2 messages from 2012-02-05 to 2012-02-05. Participants: Michael, Junio C Hamano.
Thread: https://gitlist.dev/t/29552

## Michael, 2012-02-05 10:41

Subject: [PATCH] Explicitly set X to avoid potential build breakage
Message-ID: <9854382.GTBzd7D6AT@telegraph>
URL: https://gitlist.dev/e/9854382.GTBzd7D6AT%40telegraph

```
$X is appended to binary names for Windows builds (ie. git.exe).
Pollution from the environment can inadvertently trigger this behaviour,
resulting in 'git' turning into 'gitwhatever' without warning.

Signed-off-by: Michael <kensington@astralcloak.net>
---
 Makefile |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)

diff --git a/Makefile b/Makefile
index c457c34..380d96f 100644
--- a/Makefile
+++ b/Makefile
@@ -388,6 +388,9 @@ SCRIPT_SH =
 SCRIPT_LIB =
 TEST_PROGRAMS_NEED_X =
 
+# Binary suffix used for Windows builds
+X =
+
 # Having this variable in your environment would break pipelines because
 # you cause "cd" to echo its destination to stdout.  It can also take
 # scripts to unexpected places.  If you like CDPATH, define it for your
-- 
1.7.8.4

```

## Junio C Hamano, 2012-02-05 22:14

Subject: Re: [PATCH] Explicitly set X to avoid potential build breakage
Message-ID: <7v39apexmk.fsf@alter.siamese.dyndns.org>
URL: https://gitlist.dev/e/7v39apexmk.fsf%40alter.siamese.dyndns.org
In-Reply-To: <9854382.GTBzd7D6AT@telegraph>

```
Michael <kensington@astralcloak.net> writes:

> $X is appended to binary names for Windows builds (ie. git.exe).
> Pollution from the environment can inadvertently trigger this behaviour,
> resulting in 'git' turning into 'gitwhatever' without warning.
>
> Signed-off-by: Michael <kensington@astralcloak.net>

Unless there is a compelling reason not to, could we have your name here,
not just half a name, please?  

It is not particularly a good reason to say "I go by 'Michael' among my
friends". The output from "git shortlog -s --author=Michael" shows more
than 20 Michaels already, and it would be nice for us if we can easily
differenciate you among this group of people you are now joining with this
patch.

> ---
>  Makefile |    3 +++
>  1 files changed, 3 insertions(+), 0 deletions(-)
>
> diff --git a/Makefile b/Makefile
> index c457c34..380d96f 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -388,6 +388,9 @@ SCRIPT_SH =
>  SCRIPT_LIB =
>  TEST_PROGRAMS_NEED_X =
>  
> +# Binary suffix used for Windows builds
> +X =
> +

The patch looks good to me, although it might make sense to move it down
before this line

	PROGRAMS += $(patsubst %.o,git-%$X,$(PROGRAM_OBJS))

where it matters most as the documentation of what $X is being used for.

```