system/font-manager: Fix build when webkit2gtk not installed.

Signed-off-by: B. Watson <yalhcru@gmail.com>

Signed-off-by: Willy Sudiarto Raharjo <willysr@slackbuilds.org>

system/font-manager/README

@@ -1,4 +1,7 @@
 A simple font management application for GTK+ Desktop Environments.
 
+Optional dependency: webkit2gtk, autodetected at build time. This is
+required if you want Google Fonts integration.
+
 Optional dependency: file-roller. This is a runtime dependency, not
 required at build time.

system/font-manager/font-manager.SlackBuild

@@ -25,6 +25,9 @@
 # 20220222 bkw: Modified by SlackBuilds.org: fix build on 15.0,
 # by updating to v0.8.8.
 
+# 20220306 bkw: Modified by SlackBuilds.org again: add autodetection
+# for webkit2gtk dependency.
+
 cd $(dirname $0) ; CWD=$(pwd)
 
 PRGNAM=font-manager
@@ -79,6 +82,9 @@ find -L . \
  \( -perm 666 -o -perm 664 -o -perm 640 -o -perm 600 -o -perm 444 \
   -o -perm 440 -o -perm 400 \) -exec chmod 644 {} \+
 
+WEBKIT=false
+pkg-config --exists webkit2gtk-4.0 && WEBKIT=true
+
 mkdir build
 cd build
   CFLAGS="$SLKCFLAGS" \
@@ -92,6 +98,7 @@ cd build
     --prefix=/usr \
     --sysconfdir=/etc \
     -Dthunar=true \
+    -Dwebkit=$WEBKIT \
     -Dstrip=true
   "${NINJA:=ninja}"
   DESTDIR=$PKG $NINJA install