bsd.compiler.mk: Fix cross-building from non-FreeBSD
On non-FreeBSD, the various MACHINE variables for the host when
bootstrapping can be missing or not match FreeBSD's naming, causing
bsd.endian.mk to be unable to infer the endianness. Work around this by
assuming it's unsupported.
Note that we can't check BOOTSTRAPPING here as Makefile.inc1 includes
bsd.compiler.mk before that is set, and so we are unable to catch errors
during buildworld itself when cross-building and bsd.endian.mk failed,
but such errors should also show up when building on FreeBSD.
Fixes: 47363e99d3
("Enable compressed debug on little-endian targets")
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@ -239,8 +239,14 @@ ${X_}COMPILER_FEATURES+= retpoline init-all
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# PR257638 lld fails with BE compressed debug. Fixed in main but external tool
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# PR257638 lld fails with BE compressed debug. Fixed in main but external tool
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# chains will initially not have the fix. For now limit the feature to LE
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# chains will initially not have the fix. For now limit the feature to LE
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# targets.
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# targets.
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# When compiling bootstrap tools on non-FreeBSD, the various MACHINE variables
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# for the host can be missing or not match FreeBSD's naming (e.g. Linux/amd64
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# reports as MACHINE=x86_64 MACHINE_ARCH=x86_64), causing TARGET_ENDIANNESS to
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# be undefined; be conservative and default to off until we turn this on by
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# default everywhere.
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.include <bsd.endian.mk>
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.include <bsd.endian.mk>
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.if ${TARGET_ENDIANNESS} == "1234"
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.if (${.MAKE.OS} == "FreeBSD" || defined(TARGET_ENDIANNESS)) && \
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${TARGET_ENDIANNESS} == "1234"
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${X_}COMPILER_FEATURES+= compressed-debug
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${X_}COMPILER_FEATURES+= compressed-debug
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.endif
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.endif
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.endif
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.endif
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