Only pass --[no-]gc-sections if linker is GNU ld.#85274

Merged

bors merged 5 commits intorust-lang:masterfrom

luqmana:linker-is-gnu-gc-sections

May 19, 2021

Commits on May 13, 2021

Only pass --[no-]gc-sections if linker is GNU ld.
luqmana
committed

Commits on May 16, 2021

Windows mingw targets use gcc as the linker so the target spec should also indicate linker_is_gnu.
luqmana
committed

Commits on May 17, 2021

Adjust linker_is_gnu branches for cases that don't work on windows.
luqmana
committed

Commits on May 18, 2021