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serialization: use internal endian conversion functions

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These replace our platform-specific mess in favor of c++20 endian detection
via std::endian and internal byteswap functions when necessary.

They no longer rely on autoconf detection.
This commit is contained in:
Cory Fields
2024-02-27 18:39:22 +00:00
parent 432b18ca8d
commit 86b7f28d6c
5 changed files with 64 additions and 238 deletions
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9
configure.ac
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@ -975,7 +975,7 @@ if test "$TARGET_OS" = "darwin"; then
AX_CHECK_LINK_FLAG([-Wl,-fixup_chains], [HARDENED_LDFLAGS="$HARDENED_LDFLAGS -Wl,-fixup_chains"], [], [$LDFLAG_WERROR])
fi
AC_CHECK_HEADERS([endian.h sys/endian.h sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
AC_CHECK_HEADERS([sys/select.h sys/prctl.h sys/sysctl.h vm/vm_param.h sys/vmmeter.h sys/resources.h])
AC_CHECK_DECLS([getifaddrs, freeifaddrs],[CHECK_SOCKET],,
[#include <sys/types.h>
@ -990,13 +990,6 @@ AC_CHECK_DECLS([pipe2])
AC_CHECK_FUNCS([timingsafe_bcmp])
AC_CHECK_DECLS([le16toh, le32toh, le64toh, htole16, htole32, htole64, be16toh, be32toh, be64toh, htobe16, htobe32, htobe64],,,
[#if HAVE_ENDIAN_H
#include <endian.h>
#elif HAVE_SYS_ENDIAN_H
#include <sys/endian.h>
#endif])
AC_MSG_CHECKING([for __builtin_clzl])
AC_COMPILE_IFELSE([AC_LANG_PROGRAM([[ ]], [[
(void) __builtin_clzl(0);