[beast] PO: fix rule so a piping subshell doesn't hide "missing gawk" errors

[Tim Janik <timj src gnome org>]

commit d1a2fba96e2ded3b6534b3b4394a7ca8d178f406
Author: Tim Janik <timj gnu org>
Date:   Fri Apr 1 14:42:41 2016 +0200

    PO: fix rule so a piping subshell doesn't hide "missing gawk" errors
    
    Signed-off-by: Tim Janik <timj gnu org>

 po/Makefile.am |   20 +++++++++-----------
 1 files changed, 9 insertions(+), 11 deletions(-)
---
diff --git a/po/Makefile.am b/po/Makefile.am
index 8961dd8..40714b9 100644
--- a/po/Makefile.am
+++ b/po/Makefile.am
@@ -80,7 +80,7 @@ install: install-data
 install-data: $(GMOFILES)
        @echo "Installing localised message files..."
        @for lang in $(TRANSLATIONS); do \
-         $(mkinstalldirs) "$(DESTDIR)$(LOCALEDIR)/$$lang/LC_MESSAGES/"; \
+         $(mkinstalldirs) "$(DESTDIR)$(LOCALEDIR)/$$lang/LC_MESSAGES/" || exit ; \
          test ! -r "$$lang.gmo" || { \
            printf "  %-12s -> %s\n" "$$lang.gmo" ".../$$lang/$(BST_GETTEXT_DOMAIN).mo" ; \
             $(INSTALL_DATA) "$$lang.gmo" \
@@ -165,7 +165,7 @@ update-po: Makefile
        @echo "Merging messages.pot into po files..."
        @for i in $(POFILES) ; do \
          printf "%12s: " "$$i" ; \
-         $(MSGMERGE) -qsU --backup=none $(srcdir)/$$i $(srcdir)/messages.pot || exit 1 ; \
+         $(MSGMERGE) -qsU --backup=none $(srcdir)/$$i $(srcdir)/messages.pot || exit ; \
          $(GMSGFMT) -o /dev/null --verbose $(srcdir)/$$i ; \
        done
 .PHONY: update-po
@@ -202,17 +202,15 @@ split_lines = test -e $(1) -a -w . && { \
 }
 # (prepare_pot_source, POSRC_TYPE, INFILE)
 define prepare_pot_source
-       DOING=$(if $(POSRC_$(strip $(1))_FILTER),"Preparing","Listing"); \
+       DOING=$(if $(POSRC_$(strip $(1))_FILTER),"Preparing","Listing") ; \
        printf "  %-32s" "$$DOING $(strip $(or $(POSRC_$(strip $(1))_NAME), $(1) Files)): " ; \
-       $(call split_lines, $(2), "potlist$$$$.tmp", $(POSRC_$(strip $(1))_PATTERN)) ; \
-       wc -l < "potlist$$$$.tmp" ; \
+       $(call split_lines, $(2), "potlist$$$$.tmp", $(POSRC_$(strip $(1))_PATTERN)) && \
+       wc -l < "potlist$$$$.tmp" || exit ; \
        $(if $(POSRC_$(strip $(1))_FILTER), \
-         cat "potlist$$$$.tmp" | \
          while read file ; do \
-           d=`dirname "$$file"` ; mkdir -p "$(TMPDIR)/$$d" || exit $$? ; \
-           $(POSRC_$(strip $(1))_FILTER) $(top_srcdir)/"$$file" > "$(TMPDIR)/$$file" \
-           || exit $$? ; \
-         done \
+           d=`dirname "$$file"` && mkdir -p "$(TMPDIR)/$$d" || exit ; \
+           $(POSRC_$(strip $(1))_FILTER) $(top_srcdir)/"$$file" > "$(TMPDIR)/$$file" || exit ; \
+         done < "potlist$$$$.tmp" \
        , \
          : \
        ) ; rm -f "potlist$$$$.tmp"
@@ -225,7 +223,7 @@ unlisted:
        @ # list possible POT sources...
        @(cd $(top_srcdir) && find . $(FIND_NOHIDDEN) -type f -print) | sed 's,^\./,,' \
        | grep -vxF -f $(srcdir)/POTSCAN -f $(srcdir)/POTSKIP \
-       | grep -vEf $(srcdir)/POTIGNORE -e '^_(inst|build)/' -e $(DISTDIRPAT) > "xgen-$(@F)" ; :
+       | grep -vEf $(srcdir)/POTIGNORE -e '^_(inst|build)/' -e $(DISTDIRPAT) > "xgen-$(@F)"
        @ # scanning file types...
        @$(foreach TYPE, $(POSRC_TYPES), \
          $(call test_unlisted, $(TYPE), "xgen-$(@F)", "unlisted"))