make Pillow easyconfigs aware of sysroot template

[ocaisa]

(created using eb --new-pr)

[ocaisa]

@boegelbot please test @ jsc-zen2

[boegelbot]

@ocaisa: Request for testing this PR well received on jsczen2l1.int.jsc-zen2.easybuild-test.cluster

PR test command 'EB_PR=19226 EB_ARGS= EB_REPO=easybuild-easyconfigs /opt/software/slurm/bin/sbatch --mem-per-cpu=4000M --job-name test_PR_19226 --ntasks=8 ~/boegelbot/eb_from_pr_upload_jsc-zen2.sh' executed!

• exit code: 0
• output:

Submitted batch job 3720

Test results coming soon (I hope)...

- notification for comment with ID 1808186514 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
FAILED
Build succeeded for 12 out of 14 (13 easyconfigs in total)
jsczen2c1.int.jsc-zen2.easybuild-test.cluster - Linux Rocky Linux 8.5, x86_64, AMD EPYC 7742 64-Core Processor (zen2), Python 3.6.8
See https://gist.github.com/boegelbot/38f2fc2e97563d1f071fd6bf1cd3eb92 for a full test report.

[ocaisa]

@boegelbot please test @ generoso

[boegelbot]

@ocaisa: Request for testing this PR well received on login1

PR test command 'EB_PR=19226 EB_ARGS= EB_CONTAINER= EB_REPO=easybuild-easyconfigs /opt/software/slurm/bin/sbatch --job-name test_PR_19226 --ntasks=4 ~/boegelbot/eb_from_pr_upload_generoso.sh' executed!

• exit code: 0
• output:

Submitted batch job 12157

Test results coming soon (I hope)...

- notification for comment with ID 1808323932 processed

Message to humans: this is just bookkeeping information for me,
it is of no use to you (unless you think I have a bug, which I don't).

[boegelbot]

Test report by @boegelbot
SUCCESS
Build succeeded for 13 out of 13 (13 easyconfigs in total)
cns1 - Linux Rocky Linux 8.5, x86_64, Intel(R) Xeon(R) CPU E5-2667 v3 @ 3.20GHz (haswell), Python 3.6.8
See https://gist.github.com/boegelbot/a02dd5f8a4dea5778c5dfb244e8dba78 for a full test report.

[verdurin]

Test report by @verdurin
SUCCESS
Build succeeded for 14 out of 14 (13 easyconfigs in total)
easybuild-c7.novalocal - Linux CentOS Linux 7.9.2009, x86_64, Intel Xeon Processor (Skylake, IBRS), Python 3.6.8
See https://gist.github.com/verdurin/d6ec8432c7ee073ee5be40c3a02514a7 for a full test report.

[verdurin]

Looks fine.

[verdurin]

Going in, thanks @ocaisa!

[boegel]

@ocaisa Wouldn't it be better to try and patch the hardcoded paths in Pillow's setup.py via sed & %(sysroot)s, rather than always adding <sysroot>/usr/include to $CPATH (and likewise for $LD_LIBRARY_PATH), so we're really only changing something when %(sysroot)s is not an empty string (now we're always adding /usr/include to $CPATH, I'm not sure that's wise).

[boegel]

@ocaisa Wouldn't it be better to try and patch the hardcoded paths in Pillow's setup.py via sed & %(sysroot)s, rather than always adding <sysroot>/usr/include to $CPATH (and likewise for $LD_LIBRARY_PATH), so we're really only changing something when %(sysroot)s is not an empty string (now we're always adding /usr/include to $CPATH, I'm not sure that's wise).

implemented in #19267