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* installing *source* package ‘PKI’ ...
** package ‘PKI’ successfully unpacked and MD5 sums checked
checking for gcc... gcc -std=gnu99
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 -std=gnu99 accepts -g... yes
checking for gcc -std=gnu99 option to accept ISO C89... none needed
checking how to run the C preprocessor... gcc -std=gnu99 -E
checking for grep that handles long lines and -e... /bin/grep
checking for egrep... /bin/grep -E
checking for ANSI C header files... yes
checking for sys/types.h... yes
checking for sys/stat.h... yes
checking for stdlib.h... yes
checking for string.h... yes
checking for memory.h... yes
checking for strings.h... yes
checking for inttypes.h... yes
checking for stdint.h... yes
checking for unistd.h... yes
checking openssl/ssl.h usability... no
checking openssl/ssl.h presence... no
checking for openssl/ssl.h... no
checking openssl/rsa.h usability... no
checking openssl/rsa.h presence... no
checking for openssl/rsa.h... no
configure: error: Failed to find usable crypto library. Please install openssl-dev or equivalent and/or set PKG_LIBS if not in default location.
ERROR: configuration failed for package ‘PKI’
* removing ‘/home/pawel/R/PKI’
ERROR: dependency ‘PKI’ is not available for package ‘rsconnect’
* removing ‘/home/pawel/R/rsconnect’
ERROR: dependency ‘rsconnect’ is not available for package ‘shinystan’
* removing ‘/home/pawel/R/shinystan’
ERROR: dependency ‘shinystan’ is not available for package ‘brms’
* removing ‘/home/pawel/R/brms’