1.4.2源码编译时输出以下错误，哪位知道原因吗？
```
#Building C bootstrap tool.
cmd/dist
#Building compilers and Go bootstrap tool for host, linux/amd64.
lib9
cc1: error: unrecognized command line option "-Wno-missing-field-initializers"
cc1: error: unrecognized command line option "-Wno-missing-field-initializers"
cc1: error: unrecognized command line option "-Wno-missing-field-initializers"
cc1: error: unrecognized command line option "-Wno-missing-field-initializers"
go tool dist: FAILED: gcc -Wall -Wstrict-prototypes -Wextra -Wunused -Wno-sign-compare -Wno-missing-braces -Wno-parentheses -Wno-unknown-pragmas -Wno-switch -Wno-comment -Wno-missing-field-initializers -Werror -fno-common -ggdb -pipe -Wuninitialized -O2 -fmessage-length=0 -c -m64 -I /home/users/heliuxing/go/include -DPLAN9PORT -I /home/users/heliuxing/go/src/lib9 -o $WORK/_exits.o /home/users/heliuxing/go/src/lib9/_exits.c
go tool dist: FAILED: gcc -Wall -Wstrict-prototypes -Wextra -Wunused -Wno-sign-compare -Wno-missing-braces -Wno-parentheses -Wno-unknown-pragmas -Wno-switch -Wno-comment -Wno-missing-field-initializers -Werror -fno-common -ggdb -pipe -Wuninitialized -O2 -fmessage-length=0 -c -m64 -I /home/users/heliuxing/go/include -DPLAN9PORT -I /home/users/heliuxing/go/src/lib9 -o $WORK/_p9dir.o /home/users/heliuxing/go/src/lib9/_p9dir.c
go tool dist: FAILED: gcc -Wall -Wstrict-prototypes -Wextra -Wunused -Wno-sign-compare -Wno-missing-braces -Wno-parentheses -Wno-unknown-pragmas -Wno-switch -Wno-comment -Wno-missing-field-initializers -Werror -fno-common -ggdb -pipe -Wuninitialized -O2 -fmessage-length=0 -c -m64 -I /home/users/heliuxing/go/include -DPLAN9PORT -I /home/users/heliuxing/go/src/lib9 -o $WORK/atoi.o /home/users/heliuxing/go/src/lib9/atoi.c
go tool dist: FAILED: gcc -Wall -Wstrict-prototypes -Wextra -Wunused -Wno-sign-compare -Wno-missing-braces -Wno-parentheses -Wno-unknown-pragmas -Wno-switch -Wno-comment -Wno-missing-field-initializers -Werror -fno-common -ggdb -pipe -Wuninitialized -O2 -fmessage-length=0 -c -m64 -I /home/users/heliuxing/go/include -DPLAN9PORT -I /home/users/heliuxing/go/src/lib9 -o $WORK/await.o /home/users/heliuxing/go/src/lib9/await.c
```
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