今天在FreeBSD 5.4 Release中安装Firefox， 先更新ports tree到最新版本：

                                          
FreeBSD# cvsup -g -L 2 /root/ports-supfile
                                          

然后到Firefox的目录中去执行make:

                                          
FreeBSD# cd /usr/ports/www/firefox        
FreeBSD# make                             
                                          

没多久，系统就爆出了编译错误：

nsHostResolver.h:95: error: ISO C++ forbids declaration of `PRAddrInfo' with no type nsHostResolver.h:95: error: expected `;' before '*' token nsHostResolver.h: In member function `PRBool nsHostRecord::HasResult() const': nsHostResolver.h:99: error: `addr_info' undeclared (first use this function) nsHostResolver.h:99: error: (Each undeclared identifier is reported only once for each function it appears in.) nsHostResolver.h: At global scope: nsHostResolver.h:209: error: `PRAddrInfo' has not been declared nsHostResolver.h:209: error: ISO C++ forbids declaration of `parameter' with no type nsDNSService2.cpp: In member function `virtual nsresult nsDNSRecord::GetCanonicalName(nsACString&)': nsDNSService2.cpp:95: error: 'class nsDerivedSafe ' has no member named 'addr_info' nsDNSService2.cpp:96: error: 'class nsDerivedSafe ' has no member named 'addr_info' nsDNSService2.cpp:96: error: `PR_GetCanonNameFromAddrInfo' undeclared (first use this function) nsDNSService2.cpp: In member function `virtual nsresult nsDNSRecord::GetNextAddr(PRUint16, PRNetAddr*)': nsDNSService2.cpp:112: error: 'class nsDerivedSafe ' has no member named 'addr_info' nsDNSService2.cpp:113: error: 'class nsDerivedSafe ' has no member named 'addr_info' nsDNSService2.cpp:113: error: `PR_EnumerateAddrInfo' undeclared (first use this function) nsDNSService2.cpp: In member function `PRUint16 nsDNSService::GetAFForLookup(const nsACString&)': nsDNSService2.cpp:528: error: `PR_AF_UNSPEC' undeclared (first use this function) gmake[4]: *** [nsDNSService2.o] Error 1 gmake[4]: Leaving directory `/usr/ports/www/firefox/work/mozilla/netwerk/dns/src' gmake[3]: *** [libs] Error 2 gmake[3]: Leaving directory `/usr/ports/www/firefox/work/mozilla/netwerk/dns' gmake[2]: *** [libs] Error 2 gmake[2]: Leaving directory `/usr/ports/www/firefox/work/mozilla/netwerk' gmake[1]: *** [tier_9] Error 2 gmake[1]: Leaving directory `/usr/ports/www/firefox/work/mozilla' gmake: *** [default] Error 2 *** Error code 2

 
引起这个问题的原因是Firefox在老版本的nspr上会存在问题，无法通过编译！
于是决定安装新版的依赖包：

                                                        
FreeBSD# cd /usr/ports                                  
FreeBSD# make search name=nspr                          
                                                        

查出来有如下几个：

                                                        
Port:   nspr-4.4.1_1                                    
Path:   /usr/ports/devel/nspr                           
                                                        
Port:   dnsproxy-1.13                                   
Path:   /usr/ports/dns/dnsproxy                         
                                                        
Port:   transproxy-1.5                                  
Path:   /usr/ports/www/transproxy                       
                                                        

对他们一一进行make, make install后，再来安装firefox即可！