Experimental Physics and
Industrial Control System

Pierrick M Hanlet via Tech-talk <tech-talk at aps.anl.gov> · Thu, 15 Jun 2023 18:56:42 +0000

Greetings Andrew,
Oddly, even "make clean" creates the new file, so it's a bit of a 
nuisance; I have to have one
terminal to run make and another one to update (copy a working version 
of the RELEASE.linux-x86_64.local
file) after the build has started.

Interestingly, the v7.0.5 also has a RELEASE.linux-x86_64.local with 
"EPICS_BASE = ", but
that did not adversely affect the build.

Note that we have no special build locations.

I'm running a test now, and it appears that if I use the v7.0.5 
./configure/RULES_MODULES,
everything works as before.
Cheers,
Pierrick

On 6/15/23 10:49, Andrew Johnson via Tech-talk wrote:
> Hi Pierrick,
>
> On 6/15/23 6:07 AM, Pierrick M Hanlet via Tech-talk wrote:
>> Something broke, or I missed new instructions in building the modules in
>> v7.0.7 for cross-compiled platforms.
>> I'm building for several platforms.  The host build is fine, but when
>> the cross-compiled platforms start building
>> a new RELEASE.linux-x86_64.local is created with "EPICS_BASE = ", i.e.
>> empty.  I did not experience this with
>> v7.0.5.
> Hopefully the fix should be to just delete that file and run 'make' 
> again in that directory, but if you have a more complex local build 
> process (e.g. if you're building on multiple host arch's) that might 
> need some modifications. How were you doing the cross-builds?
>
> Getting the build rules right for generating the 
> modules/RELEASE.<host>.local file was tricky, and there were some 
> changes made to them between 7.0.5 and 7.0.7:
>> $ git log R7.0.5.. -- configure/RULES_MODULES
>> commit 098ee6c063c25c3b4483d7d5a0b6c8c6d8d17769
>> Author: Andrew Johnson <anj at anl.gov>
>> Date:   Sat Sep 3 10:59:26 2022 -0500
>>
>>     Oops: Fix to RULES_MODULES
>>
>> commit efc7cbaf7f93c1bc58f98b30b9d20a27bc0a7f91
>> Author: Andrew Johnson <anj at anl.gov>
>> Date:   Fri Sep 2 14:10:27 2022 -0500
>>
>>     Build system fixes related to INSTALL_LOCATION
>>
>>     * The build can't descend into external submodules when there is no
>>     configure/RULES_TOP file present in $(INSTALL_LOCATION).
>>     * Recreate modules/RELEASE.<host>.local if configure/CONFIG_SITE or
>>     configure/CONFIG_SITE.local have changed.
>>     * Move the distclean of modules/RELEASE.<host>.local to RULES_TOP
>>     * Several comment and white-space changes
>>
>> commit 191ff137f17eecde9e836f0f9aeaec5eecb73b24
>> Author: Andrew Johnson <anj at anl.gov>
>> Date:   Wed Nov 24 21:58:32 2021 -0600
>>
>>     configure: Use GNU Make's abspath instead of fullPathname.pl
>>
>>     Add new INSTALL_ABSOLUTE variable, remove duplicates.
>
> There are some comments at the top of the RULES_MODULES file but they 
> were mostly intended for other applications that want to adopt the 
> submodules scheme (the motor record uses it too).
>
> - Andrew
> -- 
> Complexity is free, it's Simplicity that takes work.

-- 
Pierrick Hanlet
Fermi National Accelerator
Accelerator Front End Controls
+1-630-840-5555 -- lab
+1-312-687-4980 -- mobile

"Whether you think you can or think you can't, you're right" -- Henry Ford

Experimental Physics and Industrial Control System

Experimental Physics and
Industrial Control System