Configure error: Install PHP appears configure:error:Unable to find gd.h anywhere under, error resolution

In the PHP development Environment source code installation, in the installation PHP-5.2.6 is to appear: configure:error:Unable to find gd.h anywhere under Error
Solution Method:
1. In the GD library installation path search did not find gd.h files, but under/etc/include have gd.h files
2. Search on the Internet to find a reload of the GD library can be resolved
3. Reinstall the GD library and appear during installation:

 
 
 

  
  
  
configure.ac:64:error:possibly undefined Macro:am_iconv
  
  
  
If This is token and others are legitimate, please use M4_pattern_allow.
  
  
  
The autoconf documentation.
 
 
 

Error, after./configure plus--enable-m4_pattern_allow recompile to pass
4. Recompile PHP, through

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