tree 95481a0c2f12d173b19b320385534619701a6db9
parent f0936155f2204720655aefbc2f17c25a2c80a59e
author Geert Uytterhoeven <geert@linux-m68k.org> 1470238412 +0200
committer Linus Torvalds <torvalds@linux-foundation.org> 1470242723 -0400

fs/proc: Add compiler check for -Wno-override-init to support gcc < 4.2

With gcc < 4.2 (e.g. 4.1.2):

      CC      fs/proc/task_mmu.o
    cc1: error: unrecognized command line option "-Wno-override-init"

To fix this, only enable the compiler option when it is actually
supported by the compiler.

Fixes: ca52953f5f24 ("fs/proc/task_mmu.c: suppress compilation warnings with W=1")
Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Valdis Kletnieks <valdis.kletnieks@vt.edu>
Cc: Andrew Morton <akpm@linux-foundation.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>