Add a patch for libtool.m4.

autogen.sh

 #!/bin/sh
 
 autoreconf -fvi || exit $?
-patch -p 1 -i patch/ltmain_sh.patch -d .
+patch -p 1 --no-backup-if-mismatch --forward -r - -i patch/libtool_m4.patch -d .
+# The program 'patch' exits with exitcode=1 if the patch has already been applied.
+# Consider this a normal scenario:
+exitcode=$?; if test $exitcode -ne 0 && test $exitcode -ne 1; then exit $exitcode; fi
+
+autoconf -f || exit $?
+# Reset libtool.m4 timestamps to avoid confusing make
+touch -r m4/ltversion.m4 m4/libtool.m4 || exit $?
+
+patch -p 1 --no-backup-if-mismatch --forward -r - -i patch/ltmain_sh.patch -d .
+exitcode=$?; if test $exitcode -ne 0 && test $exitcode -ne 1; then exit $exitcode; fi

patch/libtool_m4.patch

+diff --git a/m4/libtool.m4 b/m4/libtool.m4
+index a3bc337..28d0091 100644
+--- a/m4/libtool.m4
++++ b/m4/libtool.m4
+@@ -7532,10 +7532,11 @@ if AC_TRY_EVAL(ac_compile); then
+     case $prev$p in
+ 
+     -L* | -R* | -l*)
+-       # Some compilers place space between "-{L,R}" and the path.
++       # Some compilers place space between "-{L,R,l}" and the path (value).
+        # Remove the space.
+-       if test x-L = "$p" ||
+-          test x-R = "$p"; then
++       if test x-L = x"$p" ||
++          test x-R = x"$p" ||
++          test x-l = x"$p"; then
+ 	 prev=$p
+ 	 continue
+        fi