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On Wed, 15 Dec 2021 16:58:26 +0200 Adrian Ratiu wrote: |
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> Starting with kernel>=v5.7 the build system can override the |
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> tools vars by setting LLVM=1 [1], but older kernels still use |
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> the default GNU tools, so to be able to use a full LLVM/Clang |
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> build, CC should be set together with AR to the portage set |
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> values. |
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> |
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> Doing this avoids situations like building the kernel with |
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> clang (using the set HOSTCC) but using gcc/gnu-ar for headers. |
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> |
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> [1] a0d1c951ef08 kbuild: support LLVM=1 to switch the default tools to Clang/LLVM |
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> |
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> Co-authored-by: Manoj Gupta <manojgupta@××××××××.org> |
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> Signed-off-by: Adrian Ratiu <adrian.ratiu@×××××××××.com> |
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> --- |
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> eclass/kernel-2.eclass | 2 +- |
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> 1 file changed, 1 insertion(+), 1 deletion(-) |
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> |
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> diff --git a/eclass/kernel-2.eclass b/eclass/kernel-2.eclass |
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> index adc1425bc2e..caeec86ff59 100644 |
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> --- a/eclass/kernel-2.eclass |
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> +++ b/eclass/kernel-2.eclass |
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> @@ -692,7 +692,7 @@ env_setup_xmakeopts() { |
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> elif type -p ${CHOST}-ar >/dev/null; then |
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> xmakeopts="${xmakeopts} CROSS_COMPILE=${CHOST}-" |
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> fi |
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> - xmakeopts="${xmakeopts} HOSTCC=$(tc-getBUILD_CC)" |
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> + xmakeopts="${xmakeopts} HOSTCC=$(tc-getBUILD_CC) CC=$(tc-getCC) AR=$(tc-getAR)" |
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|
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OBJDUMP should be exported as well |
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(e.g. used by scripts/Makefile.build) |
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|
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> export xmakeopts |
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> } |
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> |
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|
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Best regards, |
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Andrew Savchenko |
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