[OE-core] Make sstate cache local tool independent

2014-01-31 Thread Mike Looijmans
I'm forced to using external tools in some recipes (that build FPGA bitstreams 
using huge proprietary packages). Building these takes between half an hour 
and several hours on big fast machines, so I definitely want to use 
sstate-cache for these.


The trouble I'm running into is that I have a variable like XILINX_TOOL_PATH 
which is in local.conf so people can tell where the tools are.


The compile part of the recipe runs something like 
${XILINX_TOOL_PATH}/bin/something


This makes the compile step dependent on that variable. When a machine 
installs the tools somewhere else, it will have a different value for that 
tool, and because OE thinks that matters, it will insist on building its very 
own version of that package instead of just fetching it from the sstate-cache 
on the buildserver.


How do I explain to OE that the value of this variable does not matter for the 
sstate-cache?


I tried: do_compile[vardepsexclude] = XILINX_TOOL_PATH

that didn't appear to help.


--
Mike Looijmans - TOPIC Automation


Met vriendelijke groet / kind regards,

Mike Looijmans

TOPIC Embedded Systems
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Re: [OE-core] Make sstate cache local tool independent

2014-01-31 Thread Richard Purdie
On Fri, 2014-01-31 at 09:08 +0100, Mike Looijmans wrote:
 I'm forced to using external tools in some recipes (that build FPGA 
 bitstreams 
 using huge proprietary packages). Building these takes between half an hour 
 and several hours on big fast machines, so I definitely want to use 
 sstate-cache for these.
 
 The trouble I'm running into is that I have a variable like XILINX_TOOL_PATH 
 which is in local.conf so people can tell where the tools are.
 
 The compile part of the recipe runs something like 
 ${XILINX_TOOL_PATH}/bin/something
 
 This makes the compile step dependent on that variable. When a machine 
 installs the tools somewhere else, it will have a different value for that 
 tool, and because OE thinks that matters, it will insist on building its very 
 own version of that package instead of just fetching it from the sstate-cache 
 on the buildserver.
 
 How do I explain to OE that the value of this variable does not matter for 
 the 
 sstate-cache?
 
 I tried: do_compile[vardepsexclude] = XILINX_TOOL_PATH
 
 that didn't appear to help.

Is the name of the compile step do_compile, or are there intermediate
functions?

vardepsexclude should work but you need to make sure you apply it to the
right variable/function.

Cheers,

Richard

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