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g0rg0n
Tux's lil' helper
Joined: 18 Feb 2006
Posts: 97
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 Posted: Wed Jul 17, 2024 11:17 am Post subject: bootstrapping clang |
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Hello There,
I just noticed that default-compiler-rt default-lld llvm-libunwind useflags are moved from clang to clang-common:
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# USE="default-compiler-rt default-lld llvm-libunwind" emerge -uUDvp clang
These are the packages that would be merged, in order:
Calculating dependencies... done!
Dependency resolution took 27.61 s (backtrack: 0/20).
[ebuild R ] sys-devel/clang-common-18.1.8-r1::gentoo USE="cet default-compiler-rt* default-lld* llvm-libunwind* -bootstrap-prefix -default-libcxx -hardened -verify-sig" 0 KiB
[ebuild R ] sys-libs/llvm-libunwind-18.1.8::gentoo USE="static-libs* -clang -debug -test -verify-sig" 0 KiB
Total: 2 packages (2 reinstalls), Size of downloads: 0 KiB
# emerge -vp clang
These are the packages that would be merged, in order:
Calculating dependencies... done!
Dependency resolution took 5.42 s (backtrack: 0/20).
[ebuild R ] sys-devel/clang-18.1.8:18/18.1::gentoo USE="extra (pie) static-analyzer xml -debug -doc (-ieee-long-double) -test -verify-sig" LLVM_TARGETS="(AArch64) (AMDGPU) (ARM) (AVR) (BPF) (Hexagon) (Lanai) (LoongArch) (MSP430) (Mips) (NVPTX) (PowerPC) (RISCV) (Sparc) (SystemZ) (VE) (WebAssembly) (X86) (XCore) -ARC -CSKY -DirectX -M68k -SPIRV -Xtensa" PYTHON_SINGLE_TARGET="python3_12 -python3_10 -python3_11 -python3_13" 0 KiB
Total: 1 package (1 reinstall), Size of downloads: 0 KiB
#
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Looking at clang-bootstrap wiki history, it seems this was changed sometime around Jan-2023 so my system has been running like this over a year... 
The question is, do I need to rebuild clang-common with USE="default-lld llvm-libunwind useflags" and bootstrap clang again? or it actually won't matter since I still have -fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind set in LDFLAGS?
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g0rg0n
Tux's lil' helper
Joined: 18 Feb 2006
Posts: 97
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| Posted: Wed Jul 17, 2024 11:57 am Post subject: |
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Rebuilding clang-common with USE="default-compiler-rt default-lld llvm-libunwind" modified /etc/clang/gentoo-runtimes.cfg
| Code: | /etc/clang # cat gentoo-runtimes.cfg
# This file is initially generated by sys-devel/clang-runtime.
# It is used to control the default runtimes using by clang.
--rtlib=libgcc
--unwindlib=libgcc
--stdlib=libstdc++
-fuse-ld=bfd
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| Code: | /etc/clang # cat gentoo-runtimes.cfg
# This file is initially generated by sys-devel/clang-runtime.
# It is used to control the default runtimes using by clang.
--rtlib=compiler-rt
--unwindlib=libunwind
--stdlib=libstdc++
-fuse-ld=lld
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Does LDFLAGS="-fuse-ld=lld -rtlib=compiler-rt -unwindlib=libunwind -Wl,--as-needed" override the settings in /etc/clang/gentoo-runtimes.cfg? or vice versa?
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