Re: [PATCH v2] Makefile: add option to disable automatic dependency generation
On Fri, Nov 18, 2011 at 4:58 PM, Jonathan Nieder <jrnieder@gmail.com> wrote:
Show 28 quoted lines
> Now that the COMPUTE_HEADER_DEPENDENCIES feature is turned on
> automatically for compilers that support it (see v1.7.8-rc0~142^2~1,
> 2011-08-18), there is no easy way to force it off. For example,
> setting COMPUTE_HEADER_DEPENDENCIES to the empty string in config.mak
> just tells the makefile to treat it as undefined and run a test
> command to see if the -MMD option is supported.
>
> So allow setting COMPUTE_HEADER_DEPENDENCIES=no to explicitly force
> the feature off. The new semantics:
>
> - "yes" means to explicitly enable the feature
> - "no" means to disable it
> - "auto" means to autodetect
>
> The default is still "auto". Any value other than these three will
> cause the build to error out with a descriptive message so typos and
> stale settings in config.mak don't result in mysterious behavior.
>
> Makefile:1278: *** please set COMPUTE_HEADER_DEPENDENCIES to
> yes, no, or auto (not "1"). Stop.
>
> So now when someone using a compiler without -MMD support reports
> trouble building git, you can reproduce it by running "make
> COMPUTE_HEADER_DEPENDENCIES=no".
>
> Suggested-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
> Improved-by: Junio C Hamano <gitster@pobox.com>
> Signed-off-by: Jonathan Nieder <jrnieder@gmail.com>
Tested-by: Nguyễn Thái Ngọc Duy <pclouds@gmail.com>
--
Duy
Nguyen Thai Ngoc Duy <pclouds@gmail.com>