Fix #85: Let each x86 configs set optimization level
Add COPT
variable in Config.x86_common
to set the optimization
level (defaulting to -O2
). Then each Config.x86
file can set
COPT
as desired if the default doesn't work.
Thus, Config.x86_linux
sets COPT
to -O1
, but others can use the
default value. See issue #68 (closed).