[Linux] bootstrap fails with compilation error

[Mayuresh <mayuresh%acm.org@localhost>]

In pkgsrc-current cloned using git (github.com/netbsd/pkgsrc), on
raspberry pi running raspbian (stretch) I get the following error during
bootstrap:

Please help with suggestions.

pkcs7.c: In function 'check_ca':
pkcs7.c:63:11: error: dereferencing pointer to incomplete type 'X509 {aka
struct x509_st}'
  if ((cert->ex_flags & EXFLAG_KUSAGE) != 0 &&
           ^~
*** [pkcs7.o] Error code 1

bmake[1]: stopped in
/usr/pkgsrc/bootstrap/work/wrk/pkgtools/pkg_install/work/pkg_install-20170419/lib
1 error

bmake[1]: stopped in
/usr/pkgsrc/bootstrap/work/wrk/pkgtools/pkg_install/work/pkg_install-20170419/lib
*** [all] Error code 1

bmake: stopped in
/usr/pkgsrc/bootstrap/work/wrk/pkgtools/pkg_install/work/pkg_install-20170419
1 error

bmake: stopped in
/usr/pkgsrc/bootstrap/work/wrk/pkgtools/pkg_install/work/pkg_install-20170419
*** Error code 2

Stop.
bmake[1]: stopped in /usr/pkgsrc/pkgtools/pkg_install
*** Error code 1

Stop.
bmake: stopped in /usr/pkgsrc/pkgtools/pkg_install
===> exited with status 1
aborted.


Mayuresh