From 00ff73ec6e815d9e82ef9164d23d445a2346579e Mon Sep 17 00:00:00 2001
From: Robert Marko <robimarko@gmail.com>
Date: Tue, 30 Apr 2024 11:08:46 +0200
Subject: [PATCH] tools/elfutils: remove dirname

In the 0.191 update dirname was used instead of <libgen.h> to fix the
poisoned basename error:
/usr/include/libgen.h:35:9: error: attempt to use poisoned "basename"
       35 | #define basename        __xpg_basename

However, doing this has lead to libelf.a pulling in xmalloc, xstrdup and
friends and statically linking them thus leading to a symbol name conflict
with FRR host build and anything else that links against libelf and uses
xmalloc and friends.

Well, it turns out that upstream has added a helper[1] for basename so it
can compile with musl 1.2.5 which dropped the basename declaration, but it
also means that we must NOT include <libgen.h> and that poisoned error is
intentional and added to prevent duplicate basename definitions.
This also means that for macOS we dont need to do any additional header
inclusions as the new helper takes care of basename.

So, to fix the symbol conflict we can simply drop the <dirname.h> inclusion
and build from elfutils.

Tested on Fedora 40 as well as macOS 14.4.1.

[1] https://sourceware.org/git/?p=elfutils.git;a=commit;h=a2194f6b305bf0d0b9dd49dccd0a5c21994c8eea

Fixes: #24030
Fixes: b6f025b42429 ("tools/elfutils: update to 1.91")

Link: https://github.com/openwrt/openwrt/pull/15337
Signed-off-by: Robert Marko <robimarko@gmail.com>
---
 tools/elfutils/Makefile                      |  3 +--
 tools/elfutils/patches/100-portability.patch | 10 +++++-----
 2 files changed, 6 insertions(+), 7 deletions(-)

diff --git a/tools/elfutils/Makefile b/tools/elfutils/Makefile
index 140250801c9d..466fc312711b 100644
--- a/tools/elfutils/Makefile
+++ b/tools/elfutils/Makefile
@@ -4,7 +4,7 @@ include $(TOPDIR)/rules.mk
 
 PKG_NAME:=elfutils
 PKG_VERSION:=0.191
-PKG_RELEASE:=1
+PKG_RELEASE:=2
 
 PKG_SOURCE:=$(PKG_NAME)-$(PKG_VERSION).tar.bz2
 PKG_SOURCE_URL:=https://sourceware.org/$(PKG_NAME)/ftp/$(PKG_VERSION)
@@ -41,7 +41,6 @@ PKG_GNULIB_ARGS = \
 
 PKG_GNULIB_MODS = \
 	argp \
-	dirname \
 	fts \
 	obstack \
 	progname \
diff --git a/tools/elfutils/patches/100-portability.patch b/tools/elfutils/patches/100-portability.patch
index 1a61455f483c..6f7564731b6a 100644
--- a/tools/elfutils/patches/100-portability.patch
+++ b/tools/elfutils/patches/100-portability.patch
@@ -346,12 +346,11 @@
 +}
 --- a/libdwfl/libdwflP.h
 +++ b/libdwfl/libdwflP.h
-@@ -31,6 +31,8 @@
+@@ -31,6 +31,7 @@
  
  #include <libdwfl.h>
  #include <libebl.h>
 +#include <libeu.h>
-+#include <dirname.h>
  #include <assert.h>
  #include <dirent.h>
  #include <errno.h>
@@ -366,17 +365,18 @@
 +#endif
 --- a/libdw/libdwP.h
 +++ b/libdw/libdwP.h
-@@ -32,8 +32,10 @@
+@@ -32,10 +32,10 @@
  #include <stdbool.h>
  #include <pthread.h>
  
 +#include <libeu.h>
  #include <libdw.h>
  #include <dwarf.h>
-+#include <dirname.h>
- 
  
+-
  /* Known location expressions already decoded.  */
+ struct loc_s
+ {
 --- a/libdw/Makefile.am
 +++ b/libdw/Makefile.am
 @@ -34,14 +34,12 @@ endif
-- 
2.30.2