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Build: Comment that elf_aux_info(3) will be available on OpenBSD >= 7.6 

(cherry picked from commit bf901dee5d)
This commit is contained in:
Lasse Collin 2024-07-19 20:02:43 +03:00
parent 9edddda563
commit 4669f06d1a
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GPG Key ID: 38EE757D69184620
2 changed files with 12 additions and 7 deletions
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2
CMakeLists.txt
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@ -1216,7 +1216,7 @@ if(ALLOW_ARM64_CRC32)
check_symbol_exists(getauxval sys/auxv.h HAVE_GETAUXVAL)
tuklib_add_definition_if(liblzma HAVE_GETAUXVAL)
# elf_aux_info() is supported on FreeBSD.
# elf_aux_info() is supported on FreeBSD and OpenBSD >= 7.6.
check_symbol_exists(elf_aux_info sys/auxv.h HAVE_ELF_AUX_INFO)
tuklib_add_definition_if(liblzma HAVE_ELF_AUX_INFO)

15
configure.ac
View File

@ -1081,12 +1081,17 @@ int main(void)
])
# Check for ARM64 CRC32 instruction runtime detection.
# getauxval() is supported on Linux, elf_aux_info() on FreeBSD, and
# sysctlbyname("hw.optional.armv8_crc32", ...) is supported on Darwin
#
# - getauxval() is supported on Linux.
#
# - elf_aux_info() is supported on FreeBSD and OpenBSD >= 7.6.
#
# - sysctlbyname("hw.optional.armv8_crc32", ...) is supported on Darwin
# (macOS, iOS, etc.). Note that sysctlbyname() is supported on FreeBSD,
# NetBSD, and possibly others too but the string is specific to Apple OSes.
# The C code is responsible for checking defined(__APPLE__) before using
# sysctlbyname("hw.optional.armv8_crc32", ...).
# NetBSD, and possibly others too but the string is specific to Apple
# OSes. The C code is responsible for checking defined(__APPLE__)
# before using sysctlbyname("hw.optional.armv8_crc32", ...).
#
AS_IF([test "x$enable_arm64_crc32" = xyes], [
AC_CHECK_FUNCS([getauxval elf_aux_info sysctlbyname], [break])
])