Description: fix circular dependency in makefile
 The upstream makefile is unhelpfully relying on make to allow it to break
 target dependency loops in a particular manner.  Instead, be explicit about
 the relationship between the targets.
Author: Steve Langasek <steve.langasek@ubuntu.com>
Last-Modified: 2018-03-21
Bug-Debian: https://bugs.debian.org/889176

Index: bc-1.07.1/bc/Makefile.am
===================================================================
--- bc-1.07.1.orig/bc/Makefile.am
+++ bc-1.07.1/bc/Makefile.am
@@ -8,7 +8,7 @@
              sbc.y
 noinst_HEADERS = libmath.h
 
-DISTCLEANFILES = sbc sbc.c sbc.h libmath.h
+DISTCLEANFILES = sbc sbc.c sbc.h libmath.h global_foo.c
 
 MAINTAINERCLEANFILES = Makefile.in bc.c bc.h scan.c \
 	bc.y bcdefs.h const.h execute.c fix-libmath_h \
@@ -28,16 +28,18 @@
 
 scan.o: bc.h
 global.o: libmath.h
+global_foo.c: global.c
+	cp -a global.c global_foo.c
 
 fbcOBJ = main.o bc.o scan.o execute.o load.o storage.o util.o warranty.o
 
 libmath.h: libmath.b $(fbcOBJ) $(LIBBC)
 	echo '{0}' > libmath.h
-	$(MAKE) global.o
-	$(LINK) -o fbc $(fbcOBJ) global.o $(LIBBC) $(LIBL) $(READLINELIB) $(LIBS)
+	$(MAKE) global_foo.o
+	$(LINK) -o fbc $(fbcOBJ) global_foo.o $(LIBBC) $(LIBL) $(READLINELIB) $(LIBS)
 	./fbc -c $(srcdir)/libmath.b </dev/null >libmath.h
 	$(srcdir)/fix-libmath_h
-	rm -f ./fbc ./global.o
+	rm -f ./fbc ./global_foo.o
 
 sbcOBJ = main.o sbc.o scan.o execute.o global.o load.o storage.o util.o \
          warranty.o