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gcc-10 changed the default from -fcommon to fno-common: https://gcc.gnu.org/PR85678 As a result build of lvmrun fails as: ... gcc -o lvmrun ... -lm -ldl ld: core/module.o:(.bss+0x0): multiple definition of `bytes_ops'; core/loader.o:(.bss+0x0): first defined here ld: core/fail.o:(.bss+0x0): multiple definition of `global_exn_frame'; core/evaluator.o:(.bss+0x10): first defined here ld: core/signals.o:(.bss+0x8): multiple definition of `global_exn_frame'; core/evaluator.o:(.bss+0x10): first defined here ld: heap/bytes.o:(.data.rel.local+0x0): multiple definition of `bytes_ops'; core/loader.o:(.bss+0x0): first defined here The change drops excessive variable definitions from headers.
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The package fails to build with upstream gcc-10 as:
ld: heap/bytes.o:(.data.rel.local+0x0): multiple definition of `bytes_ops';
core/loader.o:(.bss+0x0): first defined here
Upstream report: Helium4Haskell/lvm#4
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gcc-10 changed the default from -fcommon to fno-common:
https://gcc.gnu.org/PR85678
As a result build of lvmrun fails as:
The change drops excessive variable definitions from headers.