Subject: Re: [BUG] `make install' partly ignores `NO_INSTALL_HARDLINKS'

From: Đoàn Trần Công Danh <[email-masked]>
Date: Fri, 14 Aug 2020 22:02:14 +0700

On 2020-08-13 14:52:33-0700, Junio C Hamano <[email-masked]> wrote:
> Eric Sunshine <[email-masked]> writes:
> 
> > On Wed, Aug 12, 2020 at 4:16 AM Alexander Ost <[email-masked]> wrote:
> >> Despite installing with `make NO_INSTALL_HARDLINKS=1 install', the
> >> installation process tries to create hard links, and the installation
> >> fails (a quick workaround is `sed -i git-gui/Makefile -e "s/ln /ln -s
> >> /g"').
> >>
> >> make NO_INSTALL_HARDLINKS=1 install
> >> ln: failed to create hard link
> >> ‘/filesystem_without_hardlink_support/libexec/git-core/git-citool’ =>
> >> ‘/filesystem_without_hardlink_support/libexec/git-core/git-gui’:
> >> Operation not permitted
> >
> > Indeed, it appears that the git-gui Makefile does not respect
> > NO_INSTALL_HARDLINKS. The git-gui project is maintained and developed
> > outside of the Git project (even though it gets bundled with Git), so
> > it has its own issue tracker. It would probably be best to re-submit
> > this bug report there:
> >
> > https://github.com/prati0100/git-gui/issues
> 
> Thanks.  Perhaps something along this line (which is totally
> untested), as the top-level Makefile already exports
> NO_INSTALL_HARDLINKS to submakes?
> 
> 
> 
>  Makefile | 9 +++++++--
>  1 file changed, 7 insertions(+), 2 deletions(-)
> 
> diff --git a/Makefile b/Makefile
> index f10caedaa7..1cdbf8e504 100644
> --- a/Makefile
> +++ b/Makefile
> @@ -44,6 +44,11 @@ endif
>  ifndef INSTALL
>  	INSTALL = install
>  endif
> +ifdef NO_INSTALL_HARDLINKS
> +	LN = cp

Since both git-citool and git-gui will be installed into same
directory "$(libexecdir)", I think it would make more sense to use:

	LN = ln -s

here instead?

> +else
> +	LN = ln
> +endif
>  
>  RM_RF     ?= rm -rf
>  RMDIR     ?= rmdir
> @@ -57,7 +62,7 @@ INSTALL_X1 =
>  INSTALL_A0 = find # space is required here
>  INSTALL_A1 = | cpio -pud
>  INSTALL_L0 = rm -f # space is required here
> -INSTALL_L1 = && ln # space is required here
> +INSTALL_L1 = && $(LN) # space is required here
>  INSTALL_L2 =
>  INSTALL_L3 =
>  
> @@ -87,7 +92,7 @@ ifndef V
>  	INSTALL_L0 = dst=
>  	INSTALL_L1 = && src=
>  	INSTALL_L2 = && dst=
> -	INSTALL_L3 = && echo '   ' 'LINK       ' `basename "$$dst"` '->' `basename "$$src"` && rm -f "$$dst" && ln "$$src" "$$dst"
> +	INSTALL_L3 = && echo '   ' 'LINK       ' `basename "$$dst"` '->' `basename "$$src"` && rm -f "$$dst" && $(LN) "$$src" "$$dst"
>  
>  	CLEAN_DST = echo ' ' UNINSTALL
>  	REMOVE_D0 = dir=

-- 
Danh