Add patches for libtool.

autogen.sh

+#!/bin/sh
+
+autoreconf -fvi || exit $?
+patch -p 1 --no-backup-if-mismatch --forward -r - -i patch/libtool.m4.arg_spaces.patch -d .
+# The program 'patch' exits with exitcode=1 if the patch has already been applied.
+# Consider this a normal scenario:
+exitcode=$?; if test $exitcode -ne 0 && test $exitcode -ne 1; then exit $exitcode; fi
+
+patch -p 1 --no-backup-if-mismatch --forward -r - -i patch/libtool.m4.nag_wrapper.patch -d .
+exitcode=$?; 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 $?
+
+patch -p 1 --no-backup-if-mismatch --forward -r - -i patch/ltmain.sh.nag_pthread.patch -d .
+exitcode=$?; if test $exitcode -ne 0 && test $exitcode -ne 1; then exit $exitcode; fi

patch/libtool.m4.arg_spaces.patch

+--- 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

patch/libtool.m4.nag_wrapper.patch

+--- a/config/ltmain.sh
++++ b/config/ltmain.sh
+@@ -8903,7 +8903,8 @@ func_mode_link ()
+ 	  xlcverstring="$wl-compatibility_version $wl$minor_current $wl-current_version $wl$minor_current.$revision"
+ 	  verstring="-compatibility_version $minor_current -current_version $minor_current.$revision"
+           # On Darwin other compilers
+-          case $CC in
++          func_cc_basename $CC
++          case $func_cc_basename_result in
+               nagfor*)
+                   verstring="$wl-compatibility_version $wl$minor_current $wl-current_version $wl$minor_current.$revision"
+                   ;;
+--- a/m4/libtool.m4
++++ b/m4/libtool.m4
+@@ -118,6 +118,12 @@ func_cc_basename ()
+       esac
+     done
+     func_cc_basename_result=`$ECHO "$cc_temp" | $SED "s%.*/%%; s%^$host_alias-%%"`
++
++    # Set result to 'nagfor-wrapper' when NAG compiler is called via a wrapper (e.g. mpif90).
++    case $func_cc_basename_result in
++      nagfor*) ;;
++      *) $cc_temp -V 2>&1 | $GREP '^NAG Fortran Compiler Release' >/dev/null 2>&1 && func_cc_basename_result='nagfor-wrapper' ;;
++    esac
+ }
+ ])# _LT_PREPARE_CC_BASENAME
+ 

patch/ltmain.sh.nag_pthread.patch

+--- a/config/ltmain.sh
++++ b/config/ltmain.sh
+@@ -7862,6 +7862,13 @@ func_mode_link ()
+ 	# Convert "-framework foo" to "foo.ltframework"
+ 	if test -n "$inherited_linker_flags"; then
+ 	  tmp_inherited_linker_flags=`$ECHO "$inherited_linker_flags" | $SED 's/-framework \([^ $]*\)/\1.ltframework/g'`
++
++	  # Additionally convert " -pthread" to " -Wl,-pthread" for nagfor
++	  func_cc_basename $CC
++	  case $func_cc_basename_result in
++	    nagfor*) tmp_inherited_linker_flags=`$ECHO "$tmp_inherited_linker_flags" | $SED 's/ -pthread/ -Wl,-pthread/g'` ;;
++	  esac
++
+ 	  for tmp_inherited_linker_flag in $tmp_inherited_linker_flags; do
+ 	    case " $new_inherited_linker_flags " in
+ 	      *" $tmp_inherited_linker_flag "*) ;;
+@@ -9493,6 +9500,22 @@ EOF
+ 	  ;;
+       esac
+ 
++      # Time to revert the changes made for nagfor. This might be required if
++      # we need to make the output '*.la' file to be correctly interpreted for
++      # gcc (e.g. the output library that we are linking now with nagfor needs
++      # to be linked by gcc later). In this case, the libtool script of a
++      # package that will try to link our library will have to make similar
++      # non-standard nagfor-specific modifications of the '-pthread' flag.
++      # Thus, if we are creating a Fortran library for nagfor only, it is
++      # better not to revert the changes, otherwise, uncomment the following
++      # lines.
++
++      func_cc_basename $CC
++      case $func_cc_basename_result in
++        nagfor*)
++          new_inherited_linker_flags=`$ECHO " $new_inherited_linker_flags" | $SED 's% -Wl,-pthread% -pthread%g'` ;;
++      esac
++
+       # move library search paths that coincide with paths to not yet
+       # installed libraries to the beginning of the library search list
+       new_libs=