[yocto] Adding dependency for rrdtool-perl to recipe

[Christian Fuchs]

Hello,

I want to create a recipe for a tool called SmokePing.

My recipe so far looks like this:
> SUMMARY = "SmokePing keeps track of your network latency"
> HOMEPAGE = "oss.oetiker.ch/smokeping"
> SECTION = "console/network"
> LICENSE = "GPL-2.0"
> LIC_FILES_CHKSUM = "file://LICENSE;md5=09d77789fe32be35acde9637a5ee39b1"
>
> SRC_URI = "http://oss.oetiker.ch/smokeping/pub/smokeping-2.6.11.tar.gz \
>            file://0001-Hardcoded-version-number.patch \
>            "
> SRC_URI[md5sum] = "702392f5f3599f7eb1cc47eb2d192cb9"
> SRC_URI[sha256sum] = 
> "f2b3c386e95a74af2b1e7aec6410d0a58852339f00e9963f3c770cfd85ba30dd"
>
> S = "${WORKDIR}/smokeping-${PV}"
>
> RDEPENDS_${PN} = "fping"
> DEPENDS = "rrdtool perl"
>
> inherit autotools

With the following patch file:
> Subject: [PATCH] Hardcoded version number
>
> ---
>  configure.ac | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/configure.ac b/configure.ac
> index 7b7cd51..3f95e86 100644
> --- a/configure.ac
> +++ b/configure.ac
> @@ -17,7 +17,7 @@
>  #
>
>
> -AC_INIT([smokeping],m4_esyscmd([tr -d '\n' < VERSION]),[tobi at oetiker.ch])
> +AC_INIT([smokeping],[2.6.11],[tobi at oetiker.ch])
>  AC_PREREQ([2.59])
>  AC_CONFIG_AUX_DIR(conftools)
>
> -- 
> 1.9.1
>

Trying to build the recipe like this yields the following error:

> checking checking for perl module 'RRDs'... Can't locate RRDs.pm in 
> @INC (you may need to install the RRDs module) (@INC contains: 
> /usr/thirdparty/lib/perl5 /etc/perl /usr/local/lib/perl/5.18.2 
> /usr/local/share/perl/5.18.2 /usr/lib/perl5 /usr/share/perl5 
> /usr/lib/perl/5.18 /usr/share/perl/5.18 /usr/local/lib/site_perl .) at 
> -e line 1.
> | BEGIN failed--compilation aborted at -e line 1.
> | Failed
> |
> | ** Aborting Configure ******************************

 From the error message I guess that the perl library for RRD is missing 
in sysroot. The library is built as part of the rrdtool recipe, but it 
is moved to a separate package called "rrdtool-perl". How can I tell 
bitbake to install this package before building my recipe?

Kind regards,
Christian

-- 
Christian Fuchs, M.Sc. - Software-Developer
fos4X GmbH - www.fos4x.de - T +49 89 999 542 15 - F +49 89 999 542 01
Thalkirchner Str. 210, Geb. 6 - D-81371 München; AG München HRB 189 218
Managing Directors: Dr. Lars Hoffmann, Dr. Mathias Müller