Missing Dependency in description.

[ralmond]

I was trying to install ragg under R 4.2.1 and Pop_OS 22.04 (Pop_OS is downstream from Ubuntu and Debian).

I'm getting the following error:

> install.packages(c("pkgdown","ragg"),repos="https://cloud.r-project.org")
Installing packages into ‘/usr/local/lib/R/site-library’
(as ‘lib’ is unspecified)
trying URL 'https://cloud.r-project.org/src/contrib/pkgdown_2.0.7.tar.gz'
Content type 'application/x-gzip' length 871465 bytes (851 KB)
==================================================
downloaded 851 KB

trying URL 'https://cloud.r-project.org/src/contrib/ragg_1.2.5.tar.gz'
Content type 'application/x-gzip' length 427859 bytes (417 KB)
==================================================
downloaded 417 KB

* installing *source* package ‘ragg’ ...
** package ‘ragg’ successfully unpacked and MD5 sums checked
** using staged installation
Package freetype2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `freetype2.pc'
to the PKG_CONFIG_PATH environment variable
No package 'freetype2' found
Package freetype2 was not found in the pkg-config search path.
Perhaps you should add the directory containing `freetype2.pc'
to the PKG_CONFIG_PATH environment variable
No package 'freetype2' found
Using PKG_CFLAGS=
Using PKG_LIBS=-lfreetype -lpng16 -ltiff -lz -ljpeg -lbz2
-----------------------------[ ANTICONF ]-------------------------------
Configuration failed to find one of freetype2 libpng libtiff-4 libjpeg. Try installing:
 * deb: libfreetype6-dev libpng-dev libtiff5-dev libjpeg-dev (Debian, Ubuntu, etc)
 * rpm: freetype-devel libpng-devel libtiff-devel libjpeg-turbo-devel (Fedora, CentOS, RHEL)
 * csw: libfreetype_dev libpng16_dev libtiff_dev libjpeg_dev (Solaris)
If freetype2 libpng libtiff-4 libjpeg is already installed, check that 'pkg-config' is in your
PATH and PKG_CONFIG_PATH contains a freetype2 libpng libtiff-4 libjpeg.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=...'
-------------------------- [ERROR MESSAGE] ---------------------------
<stdin>:1:10: fatal error: ft2build.h: No such file or directory
compilation terminated.
--------------------------------------------------------------------
ERROR: configuration failed for package ‘ragg’
* removing ‘/usr/local/lib/R/site-library/ragg’

The information in the suggestions after ANTI-CONF is not quite correct. libfreetype6-dev should be libfreetype-dev.

When I install that library, it compiles without error.