buildroot

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 $<