X-Git-Url: https://git.dogcows.com/gitweb?a=blobdiff_plain;f=tools%2Flink.sh;fp=tools%2Flink.sh;h=d3a739c519e110d7584a382e3f42dc44549331b3;hb=200be285168841fae7b0ef421b9db3168670263b;hp=0000000000000000000000000000000000000000;hpb=f6d0b86430cc515164b298046542f80f42a29c65;p=chaz%2Fyoink

diff --git a/tools/link.sh b/tools/link.sh
new file mode 100755
index 0000000..d3a739c
--- /dev/null
+++ b/tools/link.sh
@@ -0,0 +1,160 @@
+#!/bin/sh
+
+#
+# Yoink
+# Run this script to link the executable with fewer direct dependencies.
+#
+# You shouldn't call this directly; instead, use the configure script's
+# --enable-link-sh option and run make normally.  This isn't enabled by
+# default because there is the potential for runtime linking problems on
+# some platforms.  If you have a newer version of GCC, you should prefer
+# the --as-needed linker flag over this method, though they both should
+# accomplish the same thing.
+#
+# This script was adapted from some public domain code written by Bram
+# Moolenaar for Vim.  The only input needed is the link command in the
+# variable LINK.  It is expected that the linker will return an error code
+# or this will not work.  The script caches the test results in the
+# `.link/link.sed' file; delete that file if you want to redetermine the
+# required direct dependencies.
+#
+
+
+# List here any libraries that are known to not be needed on some platform.
+libraries="\
+	atk-1.0 \
+	cairo \
+	fontconfig \
+	freetype \
+	gdk-x11-2.0 \
+	gio-2.0 \
+	glib-2.0 \
+	gmodule-2.0 \
+	ogg \
+	pango-1.0 \
+	pangocairo-1.0 \
+	pangoft2-1.0 \
+	pthread \
+	vorbis \
+	$THE_END"
+
+
+linkdir=".link"
+logfile="$linkdir/link.log"
+sedfile="$linkdir/link.sed"
+
+workdir=$(mktemp -d tmp.XXXXXXXX)
+cmdfile="$workdir/link.cmd"
+runfile="$workdir/link.run"
+
+tmpfile1="$workdir/link.tmp1"
+tmpfile2="$workdir/link.tmp2"
+tmpfile3="$workdir/link.tmp3"
+
+
+printlog()
+{
+	echo "link.sh: $@"
+}
+
+echo "$LINK " >$cmdfile
+exitcode=0
+
+
+if test -f $sedfile
+then
+	printlog "The file $sedfile exists, which is now going to be used."
+	printlog "If linking fails, try deleting the $sedfile file."
+	printlog "If that fails, try creating an empty $sedfile file."
+	printlog "If that fails, configure the package with --disable-link-sh."
+else
+	cat $cmdfile
+	if sh $cmdfile
+	then
+		mkdir -p $linkdir
+		touch $sedfile
+		cp $cmdfile $runfile
+		for libname in $libraries
+		do
+			cont=yes
+			while test -n "$cont"
+			do
+				if grep "l$libname " $runfile >/dev/null
+				then
+					if test ! -f $tmpfile1
+					then
+						printlog "Full linking works; now the fun begins."
+						printlog "See $logfile for details."
+						rm -f $logfile
+					fi
+					echo "s/-l$libname  *//" >$tmpfile1
+					sed -f $sedfile <$cmdfile | sed -f $tmpfile1 >$runfile
+					# keep the last -lm; this is supposedly needed by HP-UX
+					if test $libname != "m" || grep "lm " $runfile >/dev/null
+					then
+						printlog "Trying to remove the $libname library..."
+						cat $runfile >>$logfile
+						if sh $runfile >>$logfile 2>&1
+						then
+							printlog "We don't need the $libname library!"
+							cat $tmpfile1 >>$sedfile
+							continue
+						else
+							printlog "We DO need the $libname library."
+						fi
+					fi
+				fi
+				cont=
+				cp $cmdfile $runfile
+			done
+		done
+		if test ! -f $tmpfile1
+		then
+			printlog "Linked fine, no libraries can be removed."
+			touch $tmpfile3
+		fi
+	else
+		exitcode=$?
+	fi
+fi
+
+
+if test -s $sedfile
+then
+	printlog "Using $sedfile file to remove a few libraries."
+	sed -f $sedfile <$cmdfile >$runfile
+	cat $runfile
+	if sh $runfile
+	then
+		exitcode=0
+		printlog "Linked fine with a few libraries removed."
+	else
+		exitcode=$?
+		printlog "Linking failed, making $sedfile empty and trying again."
+		mv -f $sedfile $tmpfile2
+		touch $sedfile
+	fi
+fi
+
+if test -f $sedfile -a ! -s $sedfile -a ! -f $tmpfile3
+then
+	printlog "Using unmodified link command."
+	cat $cmdfile
+	if sh $cmdfile
+	then
+		exitcode=0
+		printlog "Linked OK."
+	else
+		exitcode=$?
+		if test -f $tmpfile2
+		then
+			printlog "Linking doesn't work at all, removing $sedfile."
+			rm -f $sedfile
+		fi
+	fi
+fi
+
+
+rm -rf "$workdir"
+exit $exitcode
+