configure trouble

[Miyauchi Kazuaki]

In executing ./configure of readline-5.0, I've gotten following error 
message.
My environment is Solaris 10 for x86.

checking limits.h usability... yes
checking limits.h presence... yes
checking for limits.h... yes
checking sys/ptem.h usability... no
checking sys/ptem.h presence... yes
configure: WARNING: sys/ptem.h: present but cannot be compiled
configure: WARNING: sys/ptem.h: check for missing prerequisite headers?
configure: WARNING: sys/ptem.h: proceeding with the preprocessor's result
configure: WARNING:     ## ------------------------------------ ##
configure: WARNING:     ## Report this to address@hidden ##
configure: WARNING:     ## ------------------------------------ ##
checking for sys/ptem.h... yes
checking sys/pte.h usability... yes
checking sys/pte.h presence... yes

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