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build: Use -z noseparate-code on NetBSD < 11.0

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This can be dropped once Bitcoin Core no longer supports NetBSD 10.0 or
if upstream fix is backported.

NetBSD's dynamic linker ld.elf_so < 11.0 supports exactly 2 `PT_LOAD`
segments and binaries linked with `-z separate-code` have 4 `PT_LOAD`
segments.

https://github.com/bitcoin/bitcoin/pull/28724#issuecomment-2589347934
https://mail-index.netbsd.org/tech-userlevel/2023/01/05/msg013666.html
This commit is contained in:
David Gumberg 2025-03-21 14:19:47 -07:00
parent 8046759305
commit f57db75e91
1 changed files with 13 additions and 1 deletions
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12
CMakeLists.txt
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@ -533,7 +533,19 @@ if(ENABLE_HARDENING)
try_append_linker_flag("-Wl,--high-entropy-va" TARGET hardening_interface) try_append_linker_flag("-Wl,--high-entropy-va" TARGET hardening_interface)
try_append_linker_flag("-Wl,-z,relro" TARGET hardening_interface) try_append_linker_flag("-Wl,-z,relro" TARGET hardening_interface)
try_append_linker_flag("-Wl,-z,now" TARGET hardening_interface) try_append_linker_flag("-Wl,-z,now" TARGET hardening_interface)
# TODO: This can be dropped once Bitcoin Core no longer supports
# NetBSD 10.0 or if upstream fix is backported.
# NetBSD's dynamic linker ld.elf_so < 11.0 supports exactly 2
# `PT_LOAD` segments and binaries linked with `-z separate-code`
# have 4 `PT_LOAD` segments.
# Relevant discussions:
# - https://github.com/bitcoin/bitcoin/pull/28724#issuecomment-2589347934
# - https://mail-index.netbsd.org/tech-userlevel/2023/01/05/msg013666.html
if(CMAKE_SYSTEM_NAME STREQUAL "NetBSD" AND CMAKE_SYSTEM_VERSION VERSION_LESS 11.0)
try_append_linker_flag("-Wl,-z,noseparate-code" TARGET hardening_interface)
else()
try_append_linker_flag("-Wl,-z,separate-code" TARGET hardening_interface) try_append_linker_flag("-Wl,-z,separate-code" TARGET hardening_interface)
endif()
if(CMAKE_SYSTEM_NAME STREQUAL "Darwin") if(CMAKE_SYSTEM_NAME STREQUAL "Darwin")
try_append_linker_flag("-Wl,-fixup_chains" TARGET hardening_interface) try_append_linker_flag("-Wl,-fixup_chains" TARGET hardening_interface)
endif() endif()