https://blogs.gentoo.org/ago/2020/07/04/gentoo-tinderbox/ Issue: app-benchmarks/libc-bench-20110206 fails to compile with compiler-rt. Discovered on: amd64 (internal ref: tinderbox)
Created attachment 663016 [details] build.log build log and emerge --info
Possible context of error(s): (.text.unlikely+0x37): undefined reference to `_Unwind_Resume' (.text.unlikely+0x36): undefined reference to `_Unwind_Resume' (.text.unlikely+0x37): undefined reference to `_Unwind_Resume' (.text.unlikely+0x3a): undefined reference to `_Unwind_Resume' (.text.unlikely+0x37): undefined reference to `_Unwind_Resume' (.text+0x1c5): undefined reference to `__multf3' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x21b): undefined reference to `__addtf3' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x35b): undefined reference to `__multf3' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x3f0): undefined reference to `__multf3' (.text+0x15f0): undefined reference to `__multf3' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x1a2d): undefined reference to `__multf3' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x2264): undefined reference to `__multf3' (.text+0x547): undefined reference to `__unordtf2' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x57d): undefined reference to `__unordtf2' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x5a3): undefined reference to `__letf2' (.text+0xab): undefined reference to `__unordtf2' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0xea): undefined reference to `__unordtf2' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x107): undefined reference to `__letf2' (.text.unlikely+0x36): undefined reference to `_Unwind_Resume' (.text.unlikely+0x36): undefined reference to `_Unwind_Resume' (.text.unlikely+0x36): undefined reference to `_Unwind_Resume' (.text.unlikely+0x3b): undefined reference to `_Unwind_Resume' (.text+0x48): undefined reference to `_Unwind_GetCFA' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0xb1): undefined reference to `_Unwind_GetCFA' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x105): undefined reference to `_Unwind_GetCFA' (.text+0x17c): undefined reference to `_Unwind_ForcedUnwind' (.text+0x27): undefined reference to `_Unwind_GetLanguageSpecificData' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x40): undefined reference to `_Unwind_GetIP' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x4d): undefined reference to `_Unwind_GetRegionStart' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x194): undefined reference to `_Unwind_SetGR' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x1a3): undefined reference to `_Unwind_SetGR' /usr/lib/gcc/x86_64-pc-linux-gnu/10.2.0/../../../../x86_64-pc-linux-gnu/bin/ld: (.text+0x1b3): undefined reference to `_Unwind_SetIP' clang-10: error: linker command failed with exit code 1 (use -v to see invocation)
False positive.
Try to add -lgcc to your LDFLAGS This should solve at least a half of errors https://gcc.gnu.org/onlinedocs/gccint/Soft-float-library-routines.html https://gcc.gnu.org/onlinedocs/gccint/Libgcc.html
