[Buildroot] [PATCH] mtd: add missing -lintl from util-linux when building statically

[Baruch Siach <baruch@tkos.co.il>]

Hi Vincent,

On Thu, Sep 10, 2015 at 11:44:50AM +0100, Vicente Olivert Riera wrote:
> mtd depends on util-linux when BR2_PACKAGE_MTD_MKFSUBIFS is selected.
> Also, util-linux depends on gettext and will need to link with -lintl if
> BR2_NEEDS_GETTEXT_IF_LOCALE is selected. So, when mtd tries to link with
> util-linux's uuid (-luuid) it should add -lintl as well, but it fails
> when building statically. The uuid.pc file lists -lintl as one of the
> needed libraries, but since mtd package doesn't have a configure phase
> we can't do the following:
> 
> MTD_DEPENDENCIES += host-pkgconf
> MTD_CONF_ENV += LIBS=`$(PKG_CONFIG_HOST_BINARY) --libs uuid"`

So why not something like:

MTD_MKFS_UBIFS_LIBS = `$(PKG_CONFIG_HOST_BINARY) --libs uuid"`

and use $(MTD_MKFS_UBIFS_LIBS) instead of hard coding -lintl in the sed 
expression. This way you can remove the condition from the sed expression.

baruch

> So, in further investigations I have seen that mtd hardcodes the libs
> for mkfs.ubifs in the Makefile, in a variable called LDLIBS_mkfs.ubifs,
> and that variable can't be overwritten by passing options or environment
> variables to make.
> 
> So, to fix the problem, we use a sed command to append -lintl to the
> LDLIBS_mkfs.ubifs variable only when building statically, because it's
> the case when it fails, and only when BR2_NEEDS_GETTEXT_IF_LOCALE is
> selected, because is the case when you also need -lintl when linking
> with util-linux.
> 
> Fixes:
> 
>   http://autobuild.buildroot.net/results/2dd/2ddd714446d9eb75701bd48c117dc5bbbd291a76/
> 
> Signed-off-by: Vicente Olivert Riera <Vincent.Riera@imgtec.com>
> ---
>  package/mtd/mtd.mk |    6 ++++++
>  1 files changed, 6 insertions(+), 0 deletions(-)
> 
> diff --git a/package/mtd/mtd.mk b/package/mtd/mtd.mk
> index 0fb9fc2..a34c840 100644
> --- a/package/mtd/mtd.mk
> +++ b/package/mtd/mtd.mk
> @@ -18,6 +18,12 @@ endif
>  
>  ifeq ($(BR2_PACKAGE_MTD_MKFSUBIFS),y)
>  MTD_DEPENDENCIES += util-linux zlib lzo
> +ifeq ($(BR2_STATIC_LIBS)$(BR2_NEEDS_GETTEXT_IF_LOCALE),yy)
> +define MTD_ADD_MISSING_LINTL
> +	$(SED) '/^LDLIBS_mkfs\.ubifs/ s/$$/ -lintl/' $(@D)/Makefile
> +endef
> +MTD_PRE_BUILD_HOOKS += MTD_ADD_MISSING_LINTL
> +endif
>  endif
>  
>  ifeq ($(BR2_PACKAGE_BUSYBOX),y)

-- 
     http://baruch.siach.name/blog/                  ~. .~   Tk Open Systems
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