解决undefined reference to `BZ2_bzWriteOpen'

bsdiff编译不通过。

报错：

gugang@test:~/src/bsdiff-4.3$ make
cc -O3 -lbz2  -lbz2  bsdiff.c   -o bsdiff
/tmp/cc4wSrp7.o: In function `main':
bsdiff.c:(.text.startup+0x297): undefined reference to `BZ2_bzWriteOpen'
bsdiff.c:(.text.startup+0xa16): undefined reference to `BZ2_bzWrite'
bsdiff.c:(.text.startup+0xb62): undefined reference to `BZ2_bzWrite'
bsdiff.c:(.text.startup+0xcbf): undefined reference to `BZ2_bzWrite'
bsdiff.c:(.text.startup+0xd13): undefined reference to `BZ2_bzWriteClose'
bsdiff.c:(.text.startup+0xd66): undefined reference to `BZ2_bzWriteOpen'
bsdiff.c:(.text.startup+0xd91): undefined reference to `BZ2_bzWrite'
bsdiff.c:(.text.startup+0xdb7): undefined reference to `BZ2_bzWriteClose'
bsdiff.c:(.text.startup+0xe0a): undefined reference to `BZ2_bzWriteOpen'
bsdiff.c:(.text.startup+0xe35): undefined reference to `BZ2_bzWrite'
bsdiff.c:(.text.startup+0xe5b): undefined reference to `BZ2_bzWriteClose'
collect2: error: ld returned 1 exit status
: recipe for target 'bsdiff' failed
make: *** [bsdiff] Error 1

引起错误的原因是因为没有引用bzip2。先进入到bzip2-1.0.6目录下执行make命令：

/** bsdiff.c*/
#include 

#include 
#include 
#include 
#include 
#include 
#include 
#include 

/** 导入bzip2的引用*/
#include "bzip2/bzlib.c"
#include "bzip2/crctable.c"
#include "bzip2/compress.c"
#include "bzip2/decompress.c"
#include "bzip2/randtable.c"
#include "bzip2/blocksort.c"
#include "bzip2/huffman.c"

#define MIN(x,y) (((x)<(y)) ? (x) : (y))
......

/** bspatch.c*/
#include 
#include 
#include 
#include 
#include 
#include 
#include 

/** 导入bzip2的引用*/
#include "bzip2/bzlib.c"
#include "bzip2/crctable.c"
#include "bzip2/compress.c"
#include "bzip2/decompress.c"
#include "bzip2/randtable.c"
#include "bzip2/blocksort.c"
#include "bzip2/huffman.c"
......

gugang@test:~/src/bsdiff-4.3$ make
cc -O3 -lbz2  -lbz2  bsdiff.c   -o bsdiff
cc -O3 -lbz2  -lbz2  bspatch.c   -o bspatch

下载两个工具的源码。

bsdiff: http://www.daemonology.net/bsdiff/bsdiff-4.3.tar.gz

bzip2:http://www.bzip.org/1.0.6/bzip2-1.0.6.tar.gz