Compilation fails on latest Alpine Linux

[jvoisin]

It seems that the gcc/clang detection is broken:

/__w/mimalloc-bench/mimalloc-bench/extern /__w/mimalloc-bench/mimalloc-bench
Cloning into 'rp'...
HEAD is now at 1343890 Update changelog
[1/54] CC rpmalloc/rpmalloc.c
[2/54] CC rpmalloc/rpmalloc.c
[3/54] CC rpmalloc/rpmalloc.c
ninja: job failed: clang -MMD -MT build/ninja/linux/debug/x86-64/rpmalloc-cccf0ca/rpmalloc-a2b50b2.o -MF build/ninja/linux/debug/x86-64/rpmalloc-cccf0ca/rpmalloc-a2b50b2.o.d -I.  -DRPMALLOC_COMPILE=1 -funit-at-a-time -fstrict-aliasing -fvisibility=hidden -fno-stack-protector -fno-math-errno -ffinite-math-only -funsafe-math-optimizations -fno-trapping-math -ffast-math -D_GNU_SOURCE=1 -fomit-frame-pointer -W -Werror -pedantic -Wall -Weverything -Wno-c++98-compat -Wno-padded -Wno-documentation-unknown-command -Wno-declaration-after-statement -Wno-implicit-fallthrough -Wno-static-in-inline -Wno-reserved-id-macro -Wno-disabled-macro-expansion -std=c11 -DBUILD_DYNAMIC_LINK=1 -fPIC -m64 -g -DBUILD_DEBUG=1   -c rpmalloc/rpmalloc.c -o build/ninja/linux/debug/x86-64/rpmalloc-cccf0ca/rpmalloc-a2b50b2.o
clang-15: error: optimization flag '-funit-at-a-time' is not supported [-Werror,-Wignored-optimization-argument]
ninja: job failed: clang -MMD -MT build/ninja/linux/release/x86-64/rpmalloc-7c2f09b/rpmalloc-65d008a.o -MF build/ninja/linux/release/x86-64/rpmalloc-7c2f09b/rpmalloc-65d008a.o.d -I.  -DRPMALLOC_COMPILE=1 -funit-at-a-time -fstrict-aliasing -fvisibility=hidden -fno-stack-protector -fno-math-errno -ffinite-math-only -funsafe-math-optimizations -fno-trapping-math -ffast-math -D_GNU_SOURCE=1 -fomit-frame-pointer -W -Werror -pedantic -Wall -Weverything -Wno-c++98-compat -Wno-padded -Wno-documentation-unknown-command -Wno-declaration-after-statement -Wno-implicit-fallthrough -Wno-static-in-inline -Wno-reserved-id-macro -Wno-disabled-macro-expansion -std=c11 -m64 -g -DBUILD_RELEASE=1 -O3 -funroll-loops   -c rpmalloc/rpmalloc.c -o build/ninja/linux/release/x86-64/rpmalloc-7c2f09b/rpmalloc-65d008a.o
clang-15: error: optimization flag '-funit-at-a-time' is not supported [-Werror,-Wignored-optimization-argument]
ninja: job failed: clang -MMD -MT build/ninja/linux/debug/x86-64/rpmalloc-7c2f09b/rpmalloc-65d008a.o -MF build/ninja/linux/debug/x86-64/rpmalloc-7c2f09b/rpmalloc-65d008a.o.d -I.  -DRPMALLOC_COMPILE=1 -funit-at-a-time -fstrict-aliasing -fvisibility=hidden -fno-stack-protector -fno-math-errno -ffinite-math-only -funsafe-math-optimizations -fno-trapping-math -ffast-math -D_GNU_SOURCE=1 -fomit-frame-pointer -W -Werror -pedantic -Wall -Weverything -Wno-c++98-compat -Wno-padded -Wno-documentation-unknown-command -Wno-declaration-after-statement -Wno-implicit-fallthrough -Wno-static-in-inline -Wno-reserved-id-macro -Wno-disabled-macro-expansion -std=c11 -m64 -g -DBUILD_DEBUG=1   -c rpmalloc/rpmalloc.c -o build/ninja/linux/debug/x86-64/rpmalloc-7c2f09b/rpmalloc-65d008a.o
clang-15: error: optimization flag '-funit-at-a-time' is not supported [-Werror,-Wignored-optimization-argument]
ninja: subcommands failed
Error: Process completed with exit code 1.

[mjansson]

It was fixed on develop branch a while ago with #291 - my suggestion would be to update to the latest develop branch or commit f4732ee until I get a new release out the door