How to handle OS Dependant manifest.xml ?

asked 2011-11-08 02:03:55 -0500

Willy Lambert
352 ●11 ●12 ●21

Hi all,

I am working with a double gnulinux/xenomai system. The switch from one to the other is done like Orocos does with the "OROCOS_TARGET" env variable. But When I have a package depending of another, I need to define 2 different manifest, for exemple :

<export>
    <cpp cflags="-L${prefix}/lib -larp_core-gnulinux"/>
</export>

or

    <export>
    <cpp cflags="-L${prefix}/lib -larp_core-xenomai"/>
</export>

How could I handle this ?

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answered 2011-11-08 05:50:04 -0500

joq
25443 ●181 ●256 ●408

You can restrict a specific set of flags using the os parameter of the <cpp> tag, like this:

<cpp os="osx" cflags="-I${prefix}/include" lflags="-L${prefix}/lib -Wl,-rpath,${prefix}/lib -lrosthread -framework CoreServices"/>

For more details, see the Manifest XML tags reference.

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thans for this usefull link. I tagged it preferred because it is the ROS way. But I'll be use the orocos one as my package is an orocos one :)

Willy Lambert ( 2011-11-08 18:13:29 -0500 )edit

do you know how ROS detects the current OS ? more precisely, how does he knows between gnulinux and xenomai the one to choose ?

Willy Lambert ( 2012-04-16 02:30:39 -0500 )edit

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answered 2011-11-08 07:00:44 -0500

psoetens
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Orocos has a special mechanism such that you don't have to put any <export> statement in the manifest.xml file, but can use a generated pkg-config file instead.

In your CMakeLists.txt file:

orocos_library( arp_core apr_core.cpp )
orocos_generate_package() # last line in your CMakeLists.txt file

it will generate a .pc file alongside your manifest.xml file with the correct -L and -l flags.

This .pc file will be automatically used by depending on the arp_core package, as usual in another manifest.xml file:

<depend package="arp_core" />

For the documentation of CMake macros, see the Orocos Toolchain CMake wiki

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oh yes, this orocos_generate_package is not in all my packages (including arp_core). This must happened when migrating from different orocos versions.

Willy Lambert ( 2011-11-08 18:15:54 -0500 )edit

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How to handle OS Dependant manifest.xml ?

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