Variable in export of package manifest

asked 2011-10-04 23:06:53 -0600

rado0x54
191 ●8 ●11 ●18

Hi,

I have a quick question about the neat wrapping of an external library. I'm wrapping PhysX into a ros package and would need an variable export of a cflag depending of the word-length of the host system.

cpp cflags="-I${prefix}/include/SDKs/Cooking/include -I${prefix}/include/SDKs/Foundation/include -I${prefix}/include/SDKs/NxCharacter/include -I${prefix}/include/SDKs/Physics/include -I${prefix}/include/SDKs/PhysXLoader/include" lflags="-L${prefix}/lib -Wl,-rpath,${prefix}/lib -lNxCharacter -lNxCooking -lPhysXCore -lPhysXLoader"

Now I want to add a flag -DNX32 or -DNX64 bit to the cflags depending on the host system. (The Makefile installs PhysX binaries automatically for 32bit and 64 bit systems into the package).

Any suggestions on how to nicely do this? Thanks.

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Yep, that'll work. You can see the same pattern in the way we call things like `rosboost-cfg` (e.g.: https://code.ros.org/svn/ros/stacks/ros_comm/trunk/clients/cpp/roscpp/manifest.xml). But I'll note that this backdoor, where we let `bash` chew on the export flags, is highly non-portable, and will go away with the advent of `rosbuild2`.

Brian Gerkey ( 2011-10-05 04:01:52 -0600 )edit

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