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      cocos2d
      
                    
                    
                    
                    
      
                         百草園404
                        
                        
                        2018-09-15
                        
                            
                        
                    
      
                    
      
                        
                        
      
                    
      
                    
                    
      
                        
      
                            
                        
      
                        
      
                            
                                
      
                                    
                                        
      

                                        
                                        

                                        
        在用cocos2d-x3.2 + protobuf編譯Android項目的時候，protobuf出現(xiàn)了兩個問題：
      

       
      

      1. 首先是config.h找不到，查閱自后說是通過命令或工具生成的，里面的內(nèi)容根據(jù)不同平臺是不一樣的（引用一些用到的庫，例如hash_map,hash_set等，和部分宏定義），那么就要在自己手動生成，或者自己創(chuàng)建一個空的config，自己把一些引用到的庫加進去，為了能快速編譯通過，我就自己創(chuàng)建了一個config.h，沒有引用任何庫。
      

       
      

      

      1. #ifndef _LINUX_CONFIG_H
      2. #define _LINUX_CONFIG_H

      4. #endif
      

      

      然后找不到config.h的問題解決了。
      

       
      

      2.  然后是error "No suitable threading library available."
      

      定位到common.cc文件中
      

      #ifdef _WIN32
      #define WIN32_LEAN_AND_MEAN  // We only need minimal includes
      #include <windows.h>
      #define snprintf _snprintf    // see comment in strutil.cc
      #elif defined(HAVE_PTHREAD)
      #include <pthread.h>
      #else
      #error "No suitable threading library available."
      #endif
      

      發(fā)現(xiàn)是找不到HAVE_PTHREAD宏定義，導致沒有引用pthread庫，直接用#include <pthread.h>替換#error "No suitable threading library available."這句代碼，又會導致其他文件找不到；那么可能其它地方也引用了HAVE_PTHREAD宏，那這個宏是protobuf庫根據(jù)不同平臺定義的呢，還是該我們自己加呢，如果是自己加又應該加在哪里呢？
      

      聯(lián)想到config文件找不到的問題，猜到可能是config文件中缺少一些代碼，看來不能用空的config，那么就直接在config.h中加上 #define HAVE_PTHREAD 即可。
      

      

      1. #ifndef _LINUX_CONFIG_H
      2. #define _LINUX_CONFIG_H

      4. #define HAVE_PTHREAD

      6. #endif
      

      

       之后編譯通過。。。
      

       
      

      如果是有完美強迫癥的、或者要求高效率（使用hash_map/unordered_map等），那么就在linux上用configure生成一個config.h吧，下面附上一個完整生成的：
      

      

      1. /* config.h.  Generated from config.h.in by configure.  */
      2. /* config.h.in.  Generated from configure.ac by autoheader.  */

      4. /* the name of <hash_map> */
      5. #define HASH_MAP_CLASS hash_map

      7. /* the location of <unordered_map> or <hash_map> */
      8. #define HASH_MAP_H <ext/hash_map>

      10. /* the namespace of hash_map/hash_set */
      11. #define HASH_NAMESPACE std::tr1

      13. /* the name of <hash_set> */
      14. #define HASH_SET_CLASS hash_set

      16. /* the location of <unordered_set> or <hash_set> */
      17. #define HASH_SET_H <ext/hash_set>

      19. /* Define to 1 if you have the <dlfcn.h> header file. */
      20. #define HAVE_DLFCN_H 1

      22. /* Define to 1 if you have the <fcntl.h> header file. */
      23. #define HAVE_FCNTL_H 1

      25. /* Define to 1 if you have the `ftruncate' function. */
      26. #define HAVE_FTRUNCATE 1

      28. /* define if the compiler has hash_map */
      29. #define HAVE_HASH_MAP 1

      31. /* define if the compiler has hash_set */
      32. #define HAVE_HASH_SET 1

      34. /* Define to 1 if you have the <inttypes.h> header file. */
      35. #define HAVE_INTTYPES_H 1

      37. /* Define to 1 if you have the <limits.h> header file. */
      38. #define HAVE_LIMITS_H 1

      40. /* Define to 1 if you have the <memory.h> header file. */
      41. #define HAVE_MEMORY_H 1

      43. /* Define to 1 if you have the `memset' function. */
      44. #define HAVE_MEMSET 1

      46. /* Define to 1 if you have the `mkdir' function. */
      47. #define HAVE_MKDIR 1

      49. /* Define if you have POSIX threads libraries and header files. */
      50. #define HAVE_PTHREAD 1

      52. /* Define to 1 if you have the <stdint.h> header file. */
      53. #define HAVE_STDINT_H 1

      55. /* Define to 1 if you have the <stdlib.h> header file. */
      56. #define HAVE_STDLIB_H 1

      58. /* Define to 1 if you have the `strchr' function. */
      59. #define HAVE_STRCHR 1

      61. /* Define to 1 if you have the `strerror' function. */
      62. #define HAVE_STRERROR 1

      64. /* Define to 1 if you have the <strings.h> header file. */
      65. #define HAVE_STRINGS_H 1

      67. /* Define to 1 if you have the <string.h> header file. */
      68. #define HAVE_STRING_H 1

      70. /* Define to 1 if you have the `strtol' function. */
      71. #define HAVE_STRTOL 1

      73. /* Define to 1 if you have the <sys/stat.h> header file. */
      74. #define HAVE_SYS_STAT_H 1

      76. /* Define to 1 if you have the <sys/types.h> header file. */
      77. #define HAVE_SYS_TYPES_H 1

      79. /* Define to 1 if you have the <unistd.h> header file. */
      80. #define HAVE_UNISTD_H 1

      82. /* Enable classes using zlib compression. */
      83. /* #undef HAVE_ZLIB */

      85. /* Define to the sub-directory in which libtool stores uninstalled libraries.
      86.    */
      87. #define LT_OBJDIR ".libs/"

      89. /* Name of package */
      90. #define PACKAGE "protobuf"

      92. /* Define to the address where bug reports for this package should be sent. */
      93. #define PACKAGE_BUGREPORT "protobuf@googlegroups.com"

      95. /* Define to the full name of this package. */
      96. #define PACKAGE_NAME "Protocol Buffers"

      98. /* Define to the full name and version of this package. */
      99. #define PACKAGE_STRING "Protocol Buffers 2.5.0"

      101. /* Define to the one symbol short name of this package. */
      102. #define PACKAGE_TARNAME "protobuf"

      104. /* Define to the home page for this package. */
      105. #define PACKAGE_URL ""

      107. /* Define to the version of this package. */
      108. #define PACKAGE_VERSION "2.5.0"

      110. /* Define to necessary symbol if this constant uses a non-standard name on
      111.    your system. */
      112. /* #undef PTHREAD_CREATE_JOINABLE */

      114. /* Define to 1 if you have the ANSI C header files. */
      115. #define STDC_HEADERS 1

      117. /* Enable extensions on AIX 3, Interix.  */
      118. #ifndef _ALL_SOURCE
      119. # define _ALL_SOURCE 1
      120. #endif
      121. /* Enable GNU extensions on systems that have them.  */
      122. #ifndef _GNU_SOURCE
      123. # define _GNU_SOURCE 1
      124. #endif
      125. /* Enable threading extensions on Solaris.  */
      126. #ifndef _POSIX_PTHREAD_SEMANTICS
      127. # define _POSIX_PTHREAD_SEMANTICS 1
      128. #endif
      129. /* Enable extensions on HP NonStop.  */
      130. #ifndef _TANDEM_SOURCE
      131. # define _TANDEM_SOURCE 1
      132. #endif
      133. /* Enable general extensions on Solaris.  */
      134. #ifndef __EXTENSIONS__
      135. # define __EXTENSIONS__ 1
      136. #endif


      139. /* Version number of package */
      140. #define VERSION "2.5.0"

      142. /* Define to 1 if on MINIX. */
      143. /* #undef _MINIX */

      145. /* Define to 2 if the system does not provide POSIX.1 features except with
      146.    this defined. */
      147. /* #undef _POSIX_1_SOURCE */

      149. /* Define to 1 if you need to in order for `stat' and other things to work. */
      150. /* #undef _POSIX_SOURCE */
      

      

      　　
      

       
      
                                          		
                                
      
                                  
                        
      
                    
      



                
      
                
      
                    
                    
                        
      
                            
                                
        
                                    		
                        
        
                            
                
        
                
        
                
                
                
        
                
        


                

                
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