From be01082b86ef06382177106dd43c39a048bb231f Mon Sep 17 00:00:00 2001 From: Jessica Clarke Date: Sun, 9 Jul 2023 18:45:42 +0100 Subject: [PATCH] elf-hints.h: Allow rtld_paths.h to be included before it Currently rtld_paths.h will #undef _PATH_ELF_HINTS in order to override this to the right value if included afterwards, but the other way round does not work as elf-hints.h tries to define an already-defined macro to a potentially different value. Thus, guard the definition here so that rtld_paths.h's definition continues to take precedence. Note that, although all in-tree uses of _PATH_ELF_HINTS have included rtld_paths.h already, pax-utils wants _PATH_ELF_HINTS from elf-hints.h and so we cannot just drop the define. In-tree uses must just continue to make sure that they include rtld_paths.h to get the right value for libcompat builds as is already required. Reviewed by: kib, brooks, jhb, imp Differential Revision: https://reviews.freebsd.org/D40918 --- include/elf-hints.h | 2 ++ 1 file changed, 2 insertions(+) diff --git a/include/elf-hints.h b/include/elf-hints.h index e1ded3788a81..fa3bc407b1d1 100644 --- a/include/elf-hints.h +++ b/include/elf-hints.h @@ -47,6 +47,8 @@ struct elfhints_hdr { #define ELFHINTS_MAGIC 0x746e6845 +#ifndef _PATH_ELF_HINTS #define _PATH_ELF_HINTS "/var/run/ld-elf.so.hints" +#endif #endif /* !_ELF_HINTS_H_ */