libsmartcols/src/Makemodule.am: ensure filter-scanner/paser.c file is…

… newer than the .h file

In released tarball, for filter-scanner/parser, the .h and the .c
file has the same mtime. The 'make' tool thinks .h is newer than
the .c file, thus deciding to remake it. This will not only cause
unnecessary rebuild, but also parallel make error. For example,
after 'make', when running 'make install', the libmount.la and findmnt
are both rebuilt and findmnt building will somethings error out complaining
'libmount.so: no such file or directory' or 'libmount.so: file format
not recognized'.

Touch the generated .c file to ensure it's newer than the .h file.
In this way, in new released tarballs in the future, there will
be no unnecessary remake.

fixes util-linux#3061

Signed-off-by: Chen Qi <Qi.Chen@windriver.com>

libsmartcols/src/Makemodule.am

@@ -58,6 +58,7 @@ $(SCOLS_YACC_STEMP): $(SCOLS_YACC_BASENAME).y
 	@rm -f $(SCOLS_YACC_STEMP).tmp
 	@touch -f $(SCOLS_YACC_STEMP).tmp
 	$(AM_V_YACC) $(BISON) $< --output=${basename $@}.c --defines=${basename $@}.h
+	@touch -f ${basename $@}.c
 	@mv -f $(SCOLS_YACC_STEMP).tmp $@
 
 $(SCOLS_YACC_BASENAME).c $(SCOLS_YACC_BASENAME).h: $(SCOLS_YACC_STEMP)
@@ -69,6 +70,7 @@ $(SCOLS_LEX_STEMP): $(SCOLS_LEX_BASENAME).l
 	@rm -f $(SCOLS_LEX_STEMP).tmp
 	@touch -f $(SCOLS_LEX_STEMP).tmp
 	$(AM_V_GEN) $(FLEX) --header-file=${basename $@}.h --outfile=${basename $@}.c $<
+	@touch -f ${basename $@}.c
 	@mv -f $(SCOLS_LEX_STEMP).tmp $@
 
 $(SCOLS_LEX_BASENAME).c $(SCOLS_LEX_BASENAME).h: $(SCOLS_LEX_STEMP)