configure.in: add -fwrapv to gcc and compatible compilers
commit8d9f591005be5d9e973687af2472a8f9f6c525ae
authorH. Peter Anvin <hpa@zytor.com>
Sat, 27 Feb 2016 08:15:13 +0000 (27 00:15 -0800)
committerH. Peter Anvin <hpa@zytor.com>
Sat, 27 Feb 2016 08:15:13 +0000 (27 00:15 -0800)
tree6d53aa0c306a81f2c27449857c875457dce342ec
parent52ae33a2cbcdd946c6787ebeaa066e149085a8e8
configure.in: add -fwrapv to gcc and compatible compilers

Add the -fwrapv to gcc and compatible C compilers, to enforce
deterministic 2's-complement behavior with regards to signed and
unsigned integer types.

Signed-off-by: H. Peter Anvin <hpa@zytor.com>
configure.in