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botan: disable AltiVec if the CPU does not support it

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Botan compiles all PowerPC code with AltiVec support and only determines
at runtime whether the CPU even supports it. If the target CPU uses the
older SPE extensions, though, this is too late; since SPE and AltiVec
are incompatible, gcc aborts the compilation. This patch explicitly
disables AltiVec support unless BR2_POWERPC_CPU_HAS_ALTIVEC is defined

Signed-off-by: Tobias Blass <tobias.blass@rohde-schwarz.com>
Signed-off-by: Thomas Petazzoni <thomas.petazzoni@free-electrons.com>
(cherry picked from commit e654839f9e)
Signed-off-by: Peter Korsgaard <peter@korsgaard.com>
This commit is contained in:
Tobias Blass 2017-06-06 16:29:11 +02:00 committed by Peter Korsgaard
parent bc00cd601b
commit 85f58389cd
1 changed files with 6 additions and 0 deletions
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6
package/botan/botan.mk
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@ -43,6 +43,12 @@ BOTAN_DEPENDENCIES += zlib
BOTAN_CONF_OPTS += --with-zlib
endif
ifeq ($(BR2_POWERPC_CPU_HAS_ALTIVEC),y)
BOTAN_CONF_OPTS += --enable-altivec
else
BOTAN_CONF_OPTS += --disable-altivec
endif
define BOTAN_CONFIGURE_CMDS
(cd $(@D); $(TARGET_MAKE_ENV) ./configure.py $(BOTAN_CONF_OPTS))
endef