X-Git-Url: https://mattmccutchen.net/bigint/bigint.git/blobdiff_plain/e67d60496ce8582666f1fb77503acfe5d05c70d4..ef2b7c5922c36f93923dd3482c5bfd41b14d82ce:/Makefile

diff --git a/Makefile b/Makefile
index 8231720..db8cb4f 100644
--- a/Makefile
+++ b/Makefile
@@ -1,26 +1,52 @@
 #
 # Matt McCutchen's Big Integer Library
 #
-# Please see the project Web site at
-#    http://mysite.verizon.net/mccutchen/bigint/
-# for more information and the latest version.
-#
-# December 16, 2004 version
-#
 
-library        : BigUnsigned.o BigInteger.o BigIntegerIO.o
+# Mention default target.
+all :
+
+# Implicit rule to compile C++ files.  Modify to your taste.
+%.o : %.cc
+	g++ -c -O2 -Wall -Wextra -pedantic $<
+
+# Components of the library.
+library-objects = BigUnsigned.o BigInteger.o BigUnsignedInABase.o BigIntegerUtils.o
+library-headers = NumberlikeArray.hh BigUnsigned.hh BigUnsignedInABase.hh BigInteger.hh BigIntegerLibrary.hh
+
+# To ``make the library'', make all its objects using the implicit rule.
+library : $(library-objects)
+
+# Extra dependencies from `#include'.
+BigUnsigned.o : NumberlikeArray.hh BigUnsigned.hh
+BigInteger.o : NumberlikeArray.hh BigUnsigned.hh BigInteger.hh
+BigUnsignedInABase.o : NumberlikeArray.hh BigUnsigned.hh BigUnsignedInABase.hh
+BigIntegerUtils.o : NumberlikeArray.hh BigUnsigned.hh BigUnsignedInABase.hh BigInteger.hh
+
+# The rules below build a program that uses the library.  They are preset to
+# build ``sample'' from ``sample.cc''.  You can change the name(s) of the
+# source file(s) and program file to build your own program, or you can write
+# your own Makefile.
+
+# Components of the program.
+program = sample
+program-objects = sample.o
 
-BigUnsigned.o  : BigUnsigned.h BigUnsigned.cpp
-	g++ -c BigUnsigned.cpp
+# Conservatively assume all the program source files depend on all the library
+# headers.  You can change this if it is not the case.
+$(program-objects) : $(library-headers)
 
-BigInteger.o   : BigUnsigned.h BigInteger.h BigInteger.cpp
-	g++ -c BigInteger.cpp
+# How to link the program.  The implicit rule covers individual objects.
+$(program) : $(program-objects) $(library-objects)
+	g++ $(program-objects) $(library-objects) -o $(program)
 
-BigIntegerIO.o : BigUnsigned.h BigInteger.h BigIntegerIO.cpp
-	g++ -c BigIntegerIO.cpp
+# Delete all generated files we know about.
+clean :
+	rm -f $(library-objects) $(program-objects) $(program)
 
-po3demo        : library PowersOfThreeDemo.cpp
-	g++ -opo3demo BigUnsigned.o BigInteger.o BigIntegerIO.o PowersOfThreeDemo.cpp
+# I removed the *.tag dependency tracking system because it had few advantages
+# over manually entering all the dependencies.  If there were a portable,
+# reliable dependency tracking system, I'd use it, but I know of no such;
+# cons and depcomp are almost good enough.
 
-clean          :
-	rm -f *.o po3demo
+# Come back and define default target.
+all : library $(program)