Build error in Solaris

Hi

When I built the latest code for branch REL_10_STABLE on the Solairs,
the following error occurred:
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"plperl.c", line 669: syntax error before or at: if
"plperl.c", line 669: undefined symbol: _sv
"plperl.c", line 669: left operand of "->" must be pointer to struct/union
"plperl.c", line 669: warning: improper pointer/integer combination: arg #2
"plperl.c", line 669: syntax error before or at: else
"plperl.c", line 670: warning: statement not reached
"plperl.c", line 678: cannot recover from previous errors
cc: acomp failed for plperl.c
gmake: *** [plperl.o] Error 2
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My build environment is as follows:
Solairs version : 11.3
perl version : v5.12.5

When I revert the following commit, the bulild was successful
https://github.com/postgres/postgres/commit/8be956c65c

Is there anything I can do to solve this problem?

Regards