cmake: Introduce SECP256K1_APPEND_LDFLAGS variable #1600

1. 
   hebasto commented at 8:42 pm on September 2, 2024: member

   Downstream projects may include libsecp256k1 test executables in their test suites. In such cases, if a -fsanitize=... flag is passed via the SECP256K1_APPEND_CFLAGS variable, the same flag must also be passed to the linker.

   Required for https://github.com/bitcoin/bitcoin/pull/30791.

2. cmake: Introduce `SECP256K1_APPEND_LDFLAGS` variable

   Downstream projects may include libsecp test executables in their test
   suites. In such cases, if a `-fsanitize=...` flag is passed via the
   `SECP256K1_APPEND_CFLAGS` variable, the same flag must also be passed to
   the linker.

   421ed1b46f
3. 
   fanquake commented at 9:54 am on September 6, 2024: member

   Concept ACK - It’d be great if a maintainer could take a look, as we have some changes downstream that are blocked on this.
4. jonasnick approved
5. 
   jonasnick commented at 5:02 pm on September 7, 2024: contributor

   @real-or-random sent me a message that he utACKs this and I tested that it works.

   ACK 421ed1b46ff018f33a497df913a11d20f8dd1acc

6. jonasnick merged this on Sep 7, 2024
7. jonasnick closed this on Sep 7, 2024

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8. hebasto deleted the branch on Sep 7, 2024
9. hebasto referenced this in commit 611562806c on Sep 7, 2024

Contributors
hebasto fanquake jonasnick