Como solucionar R openssl error fatal error: openssl/opensslv.h: File or directory not found

Problema:

Al instalar el paquete openssl de R usando

install_openssl.R

BiocManager::install("openssl")

o cualquier paquete que dependa del paquete openssl, verás un mensaje de error como

openssl_config_error.txt

-------------------------- [ERROR MESSAGE] ---------------------------
tools/version.c:1:10: fatal error: openssl/opensslv.h: File or directory not found
    1 | #include <openssl/opensslv.h>
      |          ^~~~~~~~~~~~~~~~~~~~
compilation terminated.
--------------------------------------------------------------------
ERROR: configuration failed for package ‘openssl’
* removing ‘/home/uli/R/x86_64-pc-linux-gnu-library/4.0/openssl’

Solucion

Necesitas instalar OpenSSL. En Ubuntu, instálalo usando

install_openssl_deps.sh

sudo apt -y install libssl-dev

Para otros sistemas, consulta la descripción justo encima del mensaje de error por los autores del paquete:

openssl_anticonf.txt

--------------------------- [ANTICONF] --------------------------------
Configuration failed because openssl was not found. Try installing:
 * deb: libssl-dev (Debian, Ubuntu, etc)
 * rpm: openssl-devel (Fedora, CentOS, RHEL)
 * csw: libssl_dev (Solaris)
 * brew: openssl@1.1 (Mac OSX)
If openssl is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a openssl.pc file. If pkg-config
is unavailable you can set INCLUDE_DIR and LIB_DIR manually via:
R CMD INSTALL --configure-vars='INCLUDE_DIR=... LIB_DIR=...'