build: Avoid @GLIBC_2.25 symbols for compatibility #22318

1. 
   hebasto commented at 2:11 am on June 23, 2021: member

   As noted in #22244, new symbols were introduced in the current release cycle, particularly:

   • getrandom@GLIBC_2.25
   • getentropy@GLIBC_2.25

   This PR gets rid of them.

   On master (c93e123dc72bfc1bd2c637fdcd032e570d53a7bd):

   0$ objdump -T src/bitcoind src/bitcoin-cli src/bitcoin-tx src/bitcoin-util src/bitcoin-wallet src/test/test_bitcoin src/qt/bitcoin-qt | grep 2.25 | wc -l
   15
   

   With this PR:

   0$ objdump -T src/bitcoind src/bitcoin-cli src/bitcoin-tx src/bitcoin-util src/bitcoin-wallet src/test/test_bitcoin src/qt/bitcoin-qt | grep 2.25 | wc -l
   10
   

2. build: Avoid getrandom@GLIBC_2.25 symbol in libevent package a4b0b340df
3. build, qt: Avoid getentropy@GLIBC_2.25 symbol 35aab4f0c0
4. fanquake added the label Build system on Jun 23, 2021
5. 
   DrahtBot commented at 3:35 pm on June 23, 2021: member

   The following sections might be updated with supplementary metadata relevant to reviewers and maintainers.

   Conflicts

   Reviewers, this pull request conflicts with the following ones:

   • #22321 by hebasto
   • #21851 by fanquake

   If you consider this pull request important, please also help to review the conflicting pull requests. Ideally, start with the one that should be merged first.

6. 
   hebasto commented at 9:00 am on July 1, 2021: member

   Closing in favor of #22365.
7. hebasto closed this on Jul 1, 2021

   ---

8. DrahtBot locked this on Aug 16, 2022

Contributors
hebasto DrahtBot

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Build system