build: adjust use of automake's new $(AM_V_GEN) variable

* src/Makefile.am (dircolors.h, wheel-size.h, wheel.h, fs.h):
(version.c, version.h): Use $(AM_V_GEN) only as a prefix of an existing
command.  Otherwise, it provokes warnings from some "make" programs.
Suggestion from Ralf Wildenhues.

diff --git a/src/Makefile.am b/src/Makefile.am
index a8b91203c6d3d0c175c3ba0bc03e862122d707c9..5c09906c378f576b98176b6365d9d7c0b70188b7 100644 (file)
--- a/src/Makefile.am
+++ b/src/Makefile.am
@@ -290,8 +290,7 @@ editpl = sed -e 's,@''PERL''@,$(PERL),g'
 
 BUILT_SOURCES += dircolors.h
 dircolors.h: dcgen dircolors.hin
-       $(AM_V_GEN)
-       $(AM_V_at)rm -f $@ $@-t
+       $(AM_V_GEN)rm -f $@ $@-t
        $(AM_V_at)$(PERL) -w -- $(srcdir)/dcgen $(srcdir)/dircolors.hin > $@-t
        $(AM_V_at)chmod a-w $@-t
        $(AM_V_at)mv $@-t $@
@@ -300,16 +299,14 @@ wheel_size = 5
 
 BUILT_SOURCES += wheel-size.h
 wheel-size.h: Makefile.am
-       $(AM_V_GEN)
-       $(AM_V_at)rm -f $@ $@-t
+       $(AM_V_GEN)rm -f $@ $@-t
        $(AM_V_at)echo '#define WHEEL_SIZE $(wheel_size)' > $@-t
        $(AM_V_at)chmod a-w $@-t
        $(AM_V_at)mv $@-t $@
 
 BUILT_SOURCES += wheel.h
 wheel.h: wheel-gen.pl Makefile.am
-       $(AM_V_GEN)
-       $(AM_V_at)rm -f $@ $@-t
+       $(AM_V_GEN)rm -f $@ $@-t
        $(AM_V_at)$(srcdir)/wheel-gen.pl $(wheel_size) > $@-t
        $(AM_V_at)chmod a-w $@-t
        $(AM_V_at)mv $@-t $@
@@ -321,16 +318,14 @@ AM_INSTALLCHECK_STD_OPTIONS_EXEMPT = false test
 
 BUILT_SOURCES += fs.h
 fs.h: stat.c extract-magic
-       $(AM_V_GEN)
-       $(AM_V_at)rm -f $@
+       $(AM_V_GEN)rm -f $@
        $(AM_V_at)$(PERL) $(srcdir)/extract-magic $(srcdir)/stat.c > $@t
        $(AM_V_at)chmod a-w $@t
        $(AM_V_at)mv $@t $@
 
 BUILT_SOURCES += version.c
 version.c: Makefile
-       $(AM_V_GEN)
-       $(AM_V_at)rm -f $@
+       $(AM_V_GEN)rm -f $@
        $(AM_V_at)printf '#include <config.h>\n' > $@t
        $(AM_V_at)printf 'char const *Version = "$(PACKAGE_VERSION)";\n' >> $@t
        $(AM_V_at)chmod a-w $@t
@@ -338,8 +333,7 @@ version.c: Makefile
 
 BUILT_SOURCES += version.h
 version.h: Makefile
-       $(AM_V_GEN)
-       $(AM_V_at)rm -f $@
+       $(AM_V_GEN)rm -f $@
        $(AM_V_at)printf 'extern char const *Version;\n' > $@t
        $(AM_V_at)chmod a-w $@t
        $(AM_V_at)mv $@t $@