build system: Add patches to fix EAGAIN problem in libtool.

Makefile.am

@@ -101,6 +101,8 @@ EXTRA_DIST = util/sunf95preproc-wrapper \
 	contrib/06ltmain_nag_pthread-patch/ltmain_nag_pthread.patch \
 	contrib/07ltmain-early-xcompile-patch/README \
 	contrib/07ltmain-early-xcompile-patch/ltmain-early-xcompile-libtool-2.4.6.patch \
+	contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf-libtool-2.4.2.patch \
+	contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf-libtool-2.4.6.patch \
 	doc/Makefile \
 	doc/Doxyfile.in doc/README.build doc/cfortran.doc \
 	doc/cfortran.html doc/cfortran.txt doc/styleguide.txt \

contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf-libtool-2.4.2.patch

+From d7ed6049d313e5c0fc7adcb88e19e50df60b3d58 Mon Sep 17 00:00:00 2001
+From: Thomas Jahns <jahns@dkrz.de>
+Date: Mon, 30 Jan 2017 15:36:55 +0100
+Subject: [PATCH] Fix EAGAIN problem in libtool.
+
+* This work-around is needed until both bash and libtool wisen up.
+---
+ config/ltmain.sh | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/config/ltmain.sh b/config/ltmain.sh
+index 63ae69dc..cfc9c20d 100644
+--- a/config/ltmain.sh
++++ b/config/ltmain.sh
+@@ -136,6 +136,18 @@ progpath="$0"
+ 
+ 
+ : ${CP="cp -f"}
++# work around bug in libtool which raises an error when running in a
++# parallel make that should have been handled in printf internally
++printf()
++{
++  while ! builtin printf "$@" ; do
++    errcode=$?
++    # errcode might be EAGAIN=11 which means to simply try again
++    if [ $errcode != 11 ]; then
++      return $errcode
++    fi
++  done
++}
+ test "${ECHO+set}" = set || ECHO=${as_echo-'printf %s\n'}
+ : ${MAKE="make"}
+ : ${MKDIR="mkdir"}

contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf-libtool-2.4.6.patch

+From 7fade4eb31d7d8bc930e1fe2486fa9dd19366fb4 Mon Sep 17 00:00:00 2001
+From: Thomas Jahns <jahns@dkrz.de>
+Date: Wed, 21 Aug 2019 19:29:26 +0200
+Subject: [PATCH] Re-apply libtool patches.
+
+---
+ config/ltmain.sh | 12 ++++++++++++
+ 1 file changed, 12 insertions(+)
+
+diff --git a/config/ltmain.sh b/config/ltmain.sh
+index 0f0a2da3..e8a25b75 100644
+--- a/config/ltmain.sh
++++ b/config/ltmain.sh
+@@ -310,6 +310,18 @@ test -z "$GREP" && {
+ # in the command search PATH.
+ 
+ : ${CP="cp -f"}
++# work around bug in libtool which raises an error when running in a
++# parallel make that should have been handled in printf internally
++printf()
++{
++  while ! builtin printf "$@" ; do
++    errcode=$?
++    # errcode might be EAGAIN=11 which means to simply try again
++    if [ $errcode != 11 ]; then
++      return $errcode
++    fi
++  done
++}
+ : ${ECHO="printf %s\n"}
+ : ${EGREP="$GREP -E"}
+ : ${FGREP="$GREP -F"}

scripts/reconfigure

@@ -83,7 +83,8 @@ case "$libtoolversion" in
       contrib/04ltmain-xlinker-patch/ltmain-xlinker-patch.patch \
       contrib/05macos-nagfor-patch/macos-nagfor.patch \
       contrib/06ltmain_nag_pthread-patch/ltmain_nag_pthread.patch \
-      contrib/07ltmain-early-xcompile-patch/ltmain-early-xcompile-libtool-2.4.6.patch)
+      contrib/07ltmain-early-xcompile-patch/ltmain-early-xcompile-libtool-2.4.6.patch \
+      contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf-libtool-2.4.6.patch)
     ;;
   (2.4.2)
     patches=(contrib/00nagfor-libtool-patch/nagfor-libtool.patch \
@@ -92,7 +93,8 @@ case "$libtoolversion" in
       contrib/03ltmain-ld-groups-patch/ltmain-ld-groups-libtool-2.4.2.patch \
       contrib/04ltmain-xlinker-patch/ltmain-xlinker-patch.patch \
       contrib/05macos-nagfor-patch/macos-nagfor.patch \
-      contrib/06ltmain_nag_pthread-patch/ltmain_nag_pthread.patch)
+      contrib/06ltmain_nag_pthread-patch/ltmain_nag_pthread.patch \
+      contrib/08ltmain-parallel-printf-patch/ltmain-parallel-printf-libtool-2.4.2.patch)
     ;;
 esac
 for patch in "${patches[@]}"; do