From: Michael Brown <mcb30@ipxe.org>
Date: Fri, 26 Jun 2020 20:21:31 +0000 (+0100)
Subject: [build] Disable position-independent code for ARM64 EFI builds
X-Git-Tag: v1.21.1~143
X-Git-Url: http://git.ipfire.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=decee20;p=thirdparty%2Fipxe.git

[build] Disable position-independent code for ARM64 EFI builds

Some versions of gcc (observed with the cross-compiling gcc 9.3.0 in
Ubuntu 20.04) default to enabling -fPIE.  Experimentation shows that
this results in the emission of R_AARCH64_ADR_GOT_PAGE relocation
records for __stack_chk_guard.  These relocation types are not
supported by elf2efi.c.

Fix by explicitly disabling position-independent code for ARM64 EFI
builds.

Debugged-by: Antony Messerli <antony@mes.ser.li>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
---

diff --git a/src/arch/arm64/Makefile.efi b/src/arch/arm64/Makefile.efi
index 998a64d03..eb04c0e2f 100644
--- a/src/arch/arm64/Makefile.efi
+++ b/src/arch/arm64/Makefile.efi
@@ -1,5 +1,9 @@
 # -*- makefile -*- : Force emacs to use Makefile mode
 
+# Avoid untranslatable relocations
+#
+CFLAGS		+= -fno-pic
+
 # Specify EFI image builder
 #
 ELF2EFI		= $(ELF2EFI64)