From f318575f5a8a3533541b93ee6a018c5b35ee643b Mon Sep 17 00:00:00 2001
From: jahoti <jahoti@tilde.team>
Date: Thu, 14 Oct 2021 00:00:00 +0000
Subject: Add target and install directory auto-detection

It's simplistic, yet (hopefully) good enough.
---
 configure | 49 ++++++++++++++++++++++++++++++++++++++++++-------
 1 file changed, 42 insertions(+), 7 deletions(-)

diff --git a/configure b/configure
index fb56ec8..e348907 100755
--- a/configure
+++ b/configure
@@ -15,6 +15,7 @@
 
 set -e
 
+BROWSERPATH=''
 SRCDIR=''
 TARGET=''
 
@@ -27,7 +28,11 @@ while [ "x$1" != x ]; do
 	"UPDATE_URL"=*) UPDATE_URL="$(echo "$1" | cut -c 12-)";;
 	--host=*)            TARGET="$(echo "$1" | cut -c 8-)";;
 	--host)                             TARGET="$2"; shift;;
-	mozilla | chromium)                    TARGET=$1;;
+	
+	# browsers
+	chromium | chrome | google-chrome | mozilla |\
+	firefox | librewolf | icecat | iceweasel | abrowser |\
+	iceweasel-uxp | tor-browser)                 TARGET=$1;;
 	*)                         echo Ignoring option "'$1'";;
     esac
     shift
@@ -36,7 +41,7 @@ done
 # Autodetect srcdir
 if [ "x$SRCDIR" = x ]; then
     SRCDIR=..
-    if [ -f manifest.json -a -f write_makefile.sh]; then
+    if [ -f manifest.json ] && [ -f write_makefile.sh]; then
 	SRCDIR=.
     fi
 fi
@@ -50,15 +55,45 @@ elif [ ! -f "$SRCDIR"/write_makefile.sh ]; then
     exit 1
 fi
 
-# TODO: automate target detection
+# Autodetect target
+if [ "x$TARGET" = x ]; then
+    echo Detecting target automatically.
+    if [ -h /etc/alternatives/x-www-browser ]; then
+	BROWSERPATH="$(realpath /etc/alternatives/x-www-browser)"
+	TARGET="$(/etc/alternatives/x-www-browser --version 2> /dev/null |
+	    tail -n 1 | awk '{ print $1 }' | tr [A-Z] [a-z])"
+    else
+    	echo Warning: could not find target automatically. >&2
+    	echo Some make rules may fail. >&2
+    fi
+else
+    BROWSERPATH="$(realpath "$(which $TARGET)")"
+fi
 
-# Standardize and check browser names
+# Check and standardize target
 case "$TARGET" in
-    mozilla)                   TARGET=mozilla;;
-    chromium)                 TARGET=chromium;;
-    *) echo Invalid target "'$1'" >&2; exit 2;;
+    mozilla | firefox | abrowser | icecat | iceweasel-uxp |\
+    librewolf | iceweasel | gnu | tor-browser)   TARGET=mozilla;;
+    chromium | chrome | google-chrome | google) TARGET=chromium;;
+    "")                                                        ;;
+    *)              echo Invalid target "'$TARGET'" >&2; exit 2;;
 esac
 
+# Autodetect DESTDIR (no check needed)
+if [ "x$DESTDIR" = x ]; then
+    echo Guessing installation directory.
+    if [ -n "$BROWSERPATH" ] && [ -n "$TARGET" ]; then
+	DESTDIR="$(dirname "$BROWSERPATH")" # TODO: a hack for Debian?
+	if [ $TARGET = mozilla ]; then
+	    DESTDIR="$DESTDIR"/browser
+	fi
+	DESTDIR="$DESTDIR"/extensions
+    else
+    	echo Warning: could not guess installation directory. >&2
+    	echo Some make rules may fail. >&2
+    fi
+fi
+
 # Write record.conf (LEAVE SRCDIR FIRST)
 echo srcdir = "$SRCDIR" > record.conf
 echo default_target = "$TARGET" >> record.conf
-- 
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