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ipxe: Fix gcc10 compilation

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Add ipxe patch to pass -fcommon flag to gcc during compilation.
This patch is required to have ipxe compiling properly with gcc10.

Without it the following error occur (and multiple others of the same
kind:
bin/blib.a(epic100.o):(.bss+0x0): multiple definition of `_shared_bss';
  bin/blib.a(davicom.o):(.bss+0x0): first defined here

Change-Id: Id9aed4cfe6bec9c0cbdb0b99271ddff472f1f0c3
Signed-off-by: Bertrand Marquis <bertrand.marquis@arm.com>
Signed-off-by: Bruce Ashfield <bruce.ashfield@gmail.com>
This commit is contained in:
Bertrand Marquis 2020-10-09 13:37:18 +01:00 committed by Bruce Ashfield
parent ef00e949b7
commit 1d86197846
2 changed files with 34 additions and 0 deletions
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33
recipes-extended/ipxe/files/build-be-explicit-about-fcommon-compiler-directive.patch Normal file
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@ -0,0 +1,33 @@
From f982a712979619dbae2c6e0d741757e2ce94be11 Mon Sep 17 00:00:00 2001
Message-Id: <f982a712979619dbae2c6e0d741757e2ce94be11.1602165412.git.bertrand.marquis@arm.com>
From: Bruce Rogers <brogers@suse.com>
Date: Wed, 6 May 2020 15:03:02 -0600
Subject: [PATCH] [build] Be explicit about -fcommon compiler directive
gcc10 switched default behavior from -fcommon to -fno-common. Since
"__shared" relies on the legacy behavior, explicitly specify it.
Upstream-Status: backport
Signed-off-by: Bruce Rogers <brogers@suse.com>
Modified-by: Michael Brown <mcb30@ipxe.org>
Signed-off-by: Michael Brown <mcb30@ipxe.org>
---
src/Makefile.housekeeping | 1 +
1 file changed, 1 insertion(+)
diff --git a/src/Makefile.housekeeping b/src/Makefile.housekeeping
index 66d6dd44..b6c61c11 100644
--- a/Makefile.housekeeping
+++ b/Makefile.housekeeping
@@ -418,6 +418,7 @@ CFLAGS += -Os
CFLAGS += -g
ifeq ($(CCTYPE),gcc)
CFLAGS += -ffreestanding
+CFLAGS += -fcommon
CFLAGS += -Wall -W -Wformat-nonliteral
HOST_CFLAGS += -Wall -W -Wformat-nonliteral
endif
--
2.17.1

1
recipes-extended/ipxe/ipxe_git.bb
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@ -15,6 +15,7 @@ SRC_URI = " \
file://ipxe-fix-hostcc-nopie-cflags.patch \
file://ipxe-intel-Avoid-spurious-compiler-warning-on-GCC-10.patch \
file://ipxe-golan-Add-explicit-type-casts-for-nodnic_queue_pair_.patch \
file://build-be-explicit-about-fcommon-compiler-directive.patch \
"
FILES_${PN} = "/usr/share/firmware/*.rom"