From 0665c85caf7a0fcf53a6bfd4622050944285b49f Mon Sep 17 00:00:00 2001
From: Trung Nguyen <trungnt282910@gmail.com>
Date: Wed, 6 Jul 2022 23:57:55 +0700
Subject: [PATCH] gcc: Pass --eh-frame-hdr to linker by default

This creates a PT_EH_FRAME section in Haiku binaries,
allowing 3rd party unwind libraries (libunwind) to obtain
frame information for unwind procedures.

Change-Id: If475909d182bcac11024ebbc8220456733330fe8
Reviewed-on: https://review.haiku-os.org/c/buildtools/+/5434
Reviewed-by: Adrien Destugues <pulkomandy@pulkomandy.tk>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>
---
 gcc/gcc/config/haiku.h | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/gcc/gcc/config/haiku.h b/gcc/gcc/config/haiku.h
index 316d384693..37adf4081d 100644
--- a/gcc/gcc/config/haiku.h
+++ b/gcc/gcc/config/haiku.h
@@ -67,6 +67,12 @@ Boston, MA 02111-1307, USA.  */
 #define USE_LD_AS_NEEDED 1
 #endif
 
+/* Pass --eh-frame-hdr to provide a PT_EH_FRAME section, allowing unwind 
+   libraries to get frame information. */
+#if defined(HAVE_LD_EH_FRAME_HDR)
+#define LINK_EH_SPEC "%{!static|static-pie:--eh-frame-hdr} "
+#endif
+
 #undef  STARTFILE_SPEC
 #define STARTFILE_SPEC "crti.o%s crtbeginS.o%s %{!shared:%{!nostart:start_dyn.o%s}} init_term_dyn.o%s"