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From 71b9e9b7f080c464777d07bd1a917a1c449d2ef8 Mon Sep 17 00:00:00 2001
From: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
Date: Sun, 7 Aug 2016 23:20:00 +0200
Subject: [PATCH] Makefile.arm: remove -march flags
The provided -march flags, especially for ARMv5 and ARMv6 may not
necessarily match the needed ones: for ARMv5, it might be armv5,
armv5te, armv5t, etc. If the wrong one is used, the incorrect toolchain
sysroot can be used in a multilib toolchain.
Therefore, let the user building OpenBLAS pass the appropriate -march
flag.
The other flags, such as -mfpu=vfp or -mfloat-abi=hard are kept, as they
are actually required for the build to proceed (OpenBLAS uses VFP
instructions, and assume an EABIhf ABI).
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
---
Makefile.arm | 24 ++++++++++++------------
1 file changed, 12 insertions(+), 12 deletions(-)
diff --git a/Makefile.arm b/Makefile.arm
index 62bf275..c0d6ab8 100644
--- a/Makefile.arm
+++ b/Makefile.arm
@@ -1,31 +1,31 @@
# ifeq logical or
ifeq ($(CORE), $(filter $(CORE),CORTEXA9 CORTEXA15))
ifeq ($(OSNAME), Android)
-CCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -march=armv7-a
-FCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -march=armv7-a
+CCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard
+FCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard
else
-CCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard -march=armv7-a
-FCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard -march=armv7-a
+CCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard
+FCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard
endif
endif
ifeq ($(CORE), ARMV7)
ifeq ($(OSNAME), Android)
-CCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -march=armv7-a -Wl,--no-warn-mismatch
-FCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -march=armv7-a -Wl,--no-warn-mismatch
+CCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -Wl,--no-warn-mismatch
+FCOMMON_OPT += -marm -mfpu=neon -mfloat-abi=hard -Wl,--no-warn-mismatch
else
-CCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard -march=armv7-a
-FCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard -march=armv7-a
+CCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard
+FCOMMON_OPT += -marm -mfpu=vfpv3 -mfloat-abi=hard
endif
endif
ifeq ($(CORE), ARMV6)
-CCOMMON_OPT += -marm -mfpu=vfp -mfloat-abi=hard -march=armv6
-FCOMMON_OPT += -marm -mfpu=vfp -mfloat-abi=hard -march=armv6
+CCOMMON_OPT += -marm -mfpu=vfp -mfloat-abi=hard
+FCOMMON_OPT += -marm -mfpu=vfp -mfloat-abi=hard
endif
ifeq ($(CORE), ARMV5)
-CCOMMON_OPT += -marm -march=armv5
-FCOMMON_OPT += -marm -march=armv5
+CCOMMON_OPT += -marm
+FCOMMON_OPT += -marm
endif
--
2.7.4
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