[openssl-users] Installed openssl isn't recognized by TrouSerS

[.uservorname .usernachname]

Greetings,
I configured and successfully installed openssl on my readynas duo machine (http://netgear.nas-central.org/wiki/Category:ReadyNasDUO )
However the software TrouSerS tell me to install openssl.
nas-02-90-38:~# openssl version
OpenSSL 1.0.0t 3 Dec 2015
nas-02-90-38:~# cd /media/trousers-0.3.13
nas-02-90-38:/media/trousers-0.3.13# ./configure
checking build system type... sparc-unknown-linux-gnu
checking host system type... sparc-unknown-linux-gnu
checking target system type... sparc-unknown-linux-gnu
checking for a BSD-compatible install... /usr/bin/install -c
checking whether build environment is sane... yes
/media/trousers-0.3.13/missing: Unknown '--is-lightweight' option
Try '/media/trousers-0.3.13/missing --help' for more information
configure: WARNING: 'missing' script is too old or missing
checking for a thread-safe mkdir -p... /bin/mkdir -p
checking for gawk... no
checking for mawk... mawk
checking whether make sets $(MAKE)... yes
checking whether make supports nested variables... yes
checking Non-standard OpenSSL location... no
checking for style of include used by make... GNU
checking for gcc... gcc
checking whether the C compiler works... yes
checking for C compiler default output file name... a.out
checking for suffix of executables...
checking whether we are cross compiling... no
checking for suffix of object files... o
checking whether we are using the GNU C compiler... yes
checking whether gcc accepts -g... yes
checking for gcc option to accept ISO C89... none needed
checking dependency style of gcc... gcc3
checking for EVP_DigestUpdate in -lcrypto... no
configure: error: openssl is currently the only supported crypto library for trousers. Please install openssl from http://www.openssl.org or the -devel package from your distro
nas-02-90-38:/media/trousers-0.3.13#
Is it possible that openssl is installed but the function EVP_DigestUpdate in -lcrypto... is missing? Any advice would be appreciated.B.R martin
 		 	   		  
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