linux

linkers: Fix linker detection with clang on Solaris #5

Job	Run time
Arch / PyPy	19m 25s
Arch Linux	18m 19s
Ubuntu Rolling (gcc, g++)	17m 55s
CUDA (on Arch)	6m 31s
Ubuntu Rolling (--unity=on -Ddefault_library=static, --no-unittests, gcc, g++)	12m 48s
Fedora	18m 18s
Ubuntu Rolling (-Ddefault_library=both, --no-unittests, gcc, g++)	12m 53s
Gentoo	20m 29s
Ubuntu Rolling (clang, clang++)	20m 53s
OpenSUSE	14m 43s
Ubuntu Rolling (--unity=on, --no-unittests, clang, clang++)	14m 20s
Ubuntu Bionic	13m 25s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, 0, gcc, g++)	13m 19s
Ubuntu Rolling (--cross ubuntu-armhf.json --cross linux-mingw-w64-64bit.json, --unity=on, gcc, g++)	13m 21s
	3h 36m 39s

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