在32位Centos6.4上安装GraphicsMagick

安装时，make总是有如下错误，最后几行
/bin/sh ./libtool  --tag=CC   --mode=link gcc -std=gnu99  -g -O2 -Wall -pthread -ldl -L/usr/lib -L/usr/lib -ldl -L/usr/lib -L/usr/lib -o utilities/gm utilities/gm.o magick/libGraphicsMagick.la 
libtool: link: gcc -std=gnu99 -g -O2 -Wall -pthread -o utilities/.libs/gm utilities/gm.o  -L/usr/lib magick/.libs/libGraphicsMagick.so -ldl -ltiff -lfreetype -ljpeg -lpng12 -lwmflite -lXext -lX11 -lbz2 -lxml2 -lz -lm -lpthread -pthread -Wl,-rpath -Wl,/usr/local/magick/lib
magick/.libs/libGraphicsMagick.so: undefined reference to `gzopen64'
magick/.libs/libGraphicsMagick.so: undefined reference to `gzseek64'
magick/.libs/libGraphicsMagick.so: undefined reference to `gztell64'
collect2: ld returned 1 exit status
make[1]: *** [utilities/gm] Error 1
make[1]: Leaving directory `/home/wuyue/soft/GraphicsMagick-1.3.18'
make: *** [all] Error 2

解决方法：

详细的安装步骤，需要把之前安装的libz换成最新：

#cd zlib-1.2.8
#CFLAGS="-O3 -fPIC" ./configure --prefix=/usr/local/zlib/
#make
# make install
#cp   /usr/local/zlib/lib/libz.so.1.2.8  /usr/lib/
#unlink /usr/lib/libz.so
#link /usr/lib/libz.so.1.2.8 /usr/lib/libz.so
 ...
 ....
#cd GraphicsMagick-1.3.18
#./configure 
#make
#make install

安装之后报错

gm: /lib/libz.so.1: version `ZLIB_1.2.3.3' not found (required by gm)

解决办法：

[root@localhost GraphicsMagick-1.3.24]# cp /usr/local/lib/libz.so.1 /lib/
cp：是否覆盖"/lib/libz.so.1"？ y

[root@localhost GraphicsMagick-1.3.24]# gm -version
GraphicsMagick 1.3.24 2016-05-30 Q8 http://www.GraphicsMagick.org/
Copyright (C) 2002-2016 GraphicsMagick Group.
Additional copyrights and licenses apply to this software.
See http://www.GraphicsMagick.org/www/Copyright.html for details.

Feature Support:
  Native Thread Safe       yes
  Large Files (> 32 bit)   yes
  Large Memory (> 32 bit)  no
  BZIP                     yes
  DPS                      no
  FlashPix                 no
  FreeType                 yes
  Ghostscript (Library)    no
  JBIG                     no
  JPEG-2000                yes
  JPEG                     yes
  Little CMS               no
  Loadable Modules         no
  OpenMP                   yes (200805)
  PNG                      yes
  TIFF                     yes
  TRIO                     no
  UMEM                     no
  WebP                     no
  WMF                      no
  X11                      yes
  XML                      yes
  ZLIB                     yes