commit 546081fd01aad2446b9cd50444662c6438e7fb2e
author Mikio Hara <mikioh.mikioh@gmail.com> Fri Feb 07 10:23:53 2014 +0900
committer Mikio Hara <mikioh.mikioh@gmail.com> Fri Feb 07 10:23:53 2014 +0900
tree 05aef2342086ca3d1f2f7cf3e1d16eeb4768a5be
parent 5d871c7ef0771e77884c7ff0345fe3458b00bbb0

syscall: make use of signed char explicit in generating z-files on freebsd/arm

This CL is in preparation to make cgo work on freebsd/arm.

The signedness of C char might be a problem when we make bare syscall
APIs, Go structures, using built-in bootstrap scripts with cgo because
they do translate C stuff to Go stuff internally. For now almost all
the C compilers assume that the type of char will be unsigned on arm
by default but it makes a different view from amd64, 386.

This CL just passes -fsigned-char, let the type of char be signed,
option which is supported on both gcc and clang to the underlying C
compilers through cgo for avoiding such inconsistency on syscall API.

LGTM=iant
R=iant
CC=golang-codereviews
https://golang.org/cl/59740051