[Buildroot] [PATCH 1/1] Fix for GIT cross-compilation.

From: Yann E. MORIN <yann.morin.1998@free.fr>
To: buildroot@busybox.net
Subject: [Buildroot] [PATCH 1/1] Fix for GIT cross-compilation.
Date: Sat, 21 May 2016 23:09:22 +0200	[thread overview]
Message-ID: <20160521210922.GA3505@free.fr> (raw)
In-Reply-To: <1463861760-12709-1-git-send-email-mc5686@mclink.it>

Mauro, All,

On 2016-05-21 22:16 +0200, Mauro Condarelli spake thusly:
> GIT configuration partially relies on system parameters retrieved
> using 'uname -?' directlly at make time.
> This does not mix well with cross compilation.
> This patch allows to feed canned uname results directly from git.mk.
> 
> Signed-off-by: Mauro Condarelli <mc5686@mclink.it>
> ---
>  package/git/00-Fix_uname_config.patch | 21 +++++++++++++++++++++
>  package/git/git.mk                    | 10 ++++++++++
>  2 files changed, 31 insertions(+)
>  create mode 100644 package/git/00-Fix_uname_config.patch
> 
> diff --git a/package/git/00-Fix_uname_config.patch b/package/git/00-Fix_uname_config.patch
> new file mode 100644
> index 0000000..242e6cc
> --- /dev/null
> +++ b/package/git/00-Fix_uname_config.patch
> @@ -0,0 +1,21 @@
> +diff -ru git-2.6.4/config.mak.uname git-2.6.4_patched/config.mak.uname
> +--- git-2.6.4/config.mak.uname	2015-12-08 23:54:24.000000000 +0100
> ++++ git-2.6.4_patched/config.mak.uname	2016-05-20 23:31:13.502943770 +0200
> +@@ -1,11 +1,11 @@
> + # Platform specific Makefile tweaks based on uname detection
> + 
> +-uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
> +-uname_M := $(shell sh -c 'uname -m 2>/dev/null || echo not')
> +-uname_O := $(shell sh -c 'uname -o 2>/dev/null || echo not')
> +-uname_R := $(shell sh -c 'uname -r 2>/dev/null || echo not')
> +-uname_P := $(shell sh -c 'uname -p 2>/dev/null || echo not')
> +-uname_V := $(shell sh -c 'uname -v 2>/dev/null || echo not')
> ++uname_S := $(UNAME_S)

As discussed on IRC, the simplest solution which could be acceptable
upstream would be:

    -uname_S := $(shell sh -c 'uname -s 2>/dev/null || echo not')
    +uname_S ?= $(shell sh -c 'uname -s 2>/dev/null || echo not')

(and so on for the others, of course.)

I'll mark this patch as "changes requested" in patchwork while waiting
for your next version.

Thanks! :-)

Regards,
Yann E. MORIN.

> ++uname_M := $(UNAME_M)
> ++uname_O := $(UNAME_O)
> ++uname_R := $(UNAME_R)
> ++uname_P := $(UNAME_P)
> ++uname_V := $(UNAME_V)
> + 
> + ifdef MSVC
> + 	# avoid the MingW and Cygwin configuration sections
> diff --git a/package/git/git.mk b/package/git/git.mk
> index db26036..db6b2b3 100644
> --- a/package/git/git.mk
> +++ b/package/git/git.mk
> @@ -63,4 +63,14 @@ GIT_CONF_ENV += \
>  	ac_cv_fread_reads_directories=yes \
>  	ac_cv_snprintf_returns_bogus=yes LIBS='$(GIT_CONF_ENV_LIBS)'
>  
> +# git has make-time configuration based on uname; pass over specific
> +# values to be used in config.mak.uname unstead of `uname -#` output
> +GIT_MAKE_OPTS += \
> +	UNAME_S="Linux" \
> +	UNAME_M=$(BR2_ARCH) \
> +	UNAME_O="GNU/Linux" \
> +	UNAME_R=$(BR2_LINUX_KERNEL_VERSION) \
> +	UNAME_P="unknown" \
> +	UNAME_V="BuildRoot Linux $(patsubst "%",%,$(BR2_LINUX_KERNEL_VERSION))"
> +
>  $(eval $(autotools-package))
> -- 
> 2.1.4
> 
> _______________________________________________
> buildroot mailing list
> buildroot at busybox.net
> http://lists.busybox.net/mailman/listinfo/buildroot

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