Fix the rule for building C files in the gprof makefile.

PR 2587
	* Makefile.am: Fix rule to build .c files from .m files.

gprof/ChangeLog

@@ -1,3 +1,8 @@
+2019-11-13  Nick Clifton  <nickc@redhat.com>
+
+	PR 2587
+	* Makefile.am: Fix rule to build .c files from .m files.
+
 2019-09-18  Alan Modra  <amodra@gmail.com>
 
 	* corefile.c, * symtab.c: Update throughout for bfd section

gprof/Makefile.am

@@ -64,7 +64,7 @@ CONFIG_STATUS_DEPENDENCIES = $(BFDDIR)/development.sh
 # This empty rule is a hack against gmake patched by Apple.
 %.o:%.m
 
-.m.c:
+.c.m:
 	awk -f $(srcdir)/gen-c-prog.awk > $@ \
 	    FUNCTION=`(echo $*|sed -e 's,.*/,,g' -e 's/_bl//')`_blurb \
 	    FILE=$*.m $<