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Include PCRE2 in R 3.x on Debian 11 for Pango support

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In Debian 11, Pango now depends on PCRE2, so R 3.x will not be compiled with
Pango support if we hide PCRE2 to prevent R 3.5 and 3.6 from taking an unnecessary
dependency on PCRE2.

To check if R 3.x was compiled without Pango support, look for this line in the
configure output:

checking whether pkg-config knows about cairo and pango... no

Or in R, check if the "bitmapType" option defaults to "Xlib" instead of "Cairo":

> getOption("bitmapType")
"Xlib"
This commit is contained in:
Greg Lin 2021-10-22 18:28:04 -05:00
commit 3d3918230c
1 changed files with 13 additions and 5 deletions
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7
builder/build.sh
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@ -70,7 +70,12 @@ compile_r() {
# Since there's no way to disable this in the configure script, and we need
# PCRE2 for R 4.x, we hide PCRE2 from the configure script by temporarily
# removing the pkg-config file and pcre2-config script.
if [[ "${1}" =~ ^3 ]] && pkg-config --exists libpcre2-8; then
#
# The INCLUDE_PCRE2_IN_R_3 environment variable can be set to include PCRE2
# in R 3.x builds, for distributions where PCRE2 is always required.
# In Debian 11, Pango now depends on PCRE2, so R 3.x will not be compiled with
# Pango support if the PCRE2 pkg-config file is missing.
if [[ "${1}" =~ ^3 ]] && pkg-config --exists libpcre2-8 && [ -z "$INCLUDE_PCRE2_IN_R_3" ]; then
mkdir -p /tmp/pcre2
pc_dir=$(pkg-config --variable pcfiledir libpcre2-8)
mv ${pc_dir}/libpcre2-8.pc /tmp/pcre2