10.1 buildworld failed: c++: error: unknown argument: '-fconserve-space'

[Xihong Yin]

Hi,

I am trying to update from 10 to 10.1 release. I got this error during buildworld.

My system is  10.0-RELEASE-p9.

c++   -march=i486 -O2 -fno-strict-aliasing -pipe -I/usr/src/lib/libcxxrt/../../contrib/libcxxrt -Qunused-arguments -fstack-protector -Wno-empty-body -Wno-string-plus-int -Wno-unused-const-variable -Wno-tautological-compare -Wno-unused-value -Wno-parentheses-equality -Wno-unused-function -Wno-enum-conversion -Wno-switch -Wno-switch-enum -Wno-knr-promoted-parameter -Wno-parentheses -march=i486 -fconserve-space  -Wno-c++11-extensions  -c /usr/src/lib/libcxxrt/../../contrib/libcxxrt/terminate.cc -o terminate.o
c++: error: unknown argument: '-fconserve-space'
*** Error code 1

Stop.
make[4]: stopped in /usr/src/lib/libcxxrt
*** Error code 1

Stop.
make[3]: stopped in /usr/src
*** Error code 1

Stop.
make[2]: stopped in /usr/src
*** Error code 1

Stop.
make[1]: stopped in /usr/src
*** Error code 1

Stop.
make: stopped in /usr/src

What could be the problem?

Xihong