bzip2: Fix build system to build object files twice

Build objects twice for shared and static libraries

The existing Makefile causes problems on MIPS because the same object

files (not compiled with -fPIC) are used in static and shared libraries.

MIPS will refuce to link non-pic objects in shared libraries.

We fix this problems by creating a new rule for the shared library

and build the shared objects as *.sho instead of *.o.

Then, we use these objects to create the shared library.

Signed-off-by: Markos Chandras <markos.chandras@imgtec.com>

Index: bzip2-1.0.6/Makefile-libbz2_so

===================================================================

--- bzip2-1.0.6.orig/Makefile-libbz2_so

+++ bzip2-1.0.6/Makefile-libbz2_so

@@ -25,13 +25,13 @@ SHELL=/bin/sh

 CC=gcc

 override CFLAGS += -fpic -fPIC -Wall

-OBJS= blocksort.o  \

-      huffman.o    \

-      crctable.o   \

-      randtable.o  \

-      compress.o   \

-      decompress.o \

-      bzlib.o

+OBJS= blocksort.sho  \

+      huffman.sho    \

+      crctable.sho   \

+      randtable.sho  \

+      compress.sho   \

+      decompress.sho \

+      bzlib.sho

 all: $(OBJS)

 	$(CC) -shared -Wl,-soname -Wl,libbz2.so.1.0 -o libbz2.so.1.0.6 $(OBJS)

@@ -45,17 +45,5 @@ install:

 clean: 

 	rm -f $(OBJS) bzip2.o libbz2.so.1.0.6 libbz2.so.1.0 bzip2-shared

-blocksort.o: blocksort.c

-	$(CC) $(CFLAGS) -c blocksort.c

-huffman.o: huffman.c

-	$(CC) $(CFLAGS) -c huffman.c

-crctable.o: crctable.c

-	$(CC) $(CFLAGS) -c crctable.c

-randtable.o: randtable.c

-	$(CC) $(CFLAGS) -c randtable.c

-compress.o: compress.c

-	$(CC) $(CFLAGS) -c compress.c

-decompress.o: decompress.c

-	$(CC) $(CFLAGS) -c decompress.c

-bzlib.o: bzlib.c

-	$(CC) $(CFLAGS) -c bzlib.c

+%.sho: %.c

+	$(CC) $(CFLAGS) -o $@ -c $<