Merge bitcoin/bitcoin#36222: [30.x] More Backports

edc3e40981 doc: update release notes for v30.x (fanquake)
78c86f07a7 build: avoid pipe2 on Darwin (for now) (fanquake)

Pull request description:

  Backports:
  * #36218

ACKs for top commit:
  hebasto:
    re-ACK edc3e40981.

Tree-SHA512: 341692c94e3207d344c1b23d05fa86d2d8c6bf5fe38c6871db0fc6f6d8cd862eb743450dcf077bd5ecaa750bfbc940b042e07cdfa6da0fc6e15435a2e2c2cf1c

cmake/introspection.cmake

@@ -8,7 +8,9 @@ include(CheckCXXSymbolExists)
 check_cxx_symbol_exists(O_CLOEXEC "fcntl.h" HAVE_O_CLOEXEC)
 check_cxx_symbol_exists(fdatasync "unistd.h" HAVE_FDATASYNC)
 check_cxx_symbol_exists(fork "unistd.h" HAVE_DECL_FORK)
-check_cxx_symbol_exists(pipe2 "unistd.h" HAVE_DECL_PIPE2)
+if (NOT CMAKE_SYSTEM_NAME STREQUAL "Darwin")
+  check_cxx_symbol_exists(pipe2 "unistd.h" HAVE_DECL_PIPE2)
+endif()
 check_cxx_symbol_exists(setsid "unistd.h" HAVE_DECL_SETSID)
 
 if(NOT WIN32)

doc/release-notes.md

@@ -53,6 +53,10 @@ Notable changes
 - #35691 chainparams: delete my DNS seed
 - #35766 p2p: Assume v2transport for addresses from seeds
 
+### Build
+
+- #36218 build: avoid pipe2 on Darwin (for now)
+
 ### Fuzz
 
 - #35679 fuzz: Remove unused DeserializeFromFuzzingInput params overload
@@ -64,6 +68,7 @@ Thanks to everyone who directly contributed to this release:
 
 - ajtowns
 - darosior
+- fanquake
 - Hennadii Stepanov
 - Martin Zumsande
 - sipa