ubuntu 步步为营之BOA移植
http://blog.sina.com.cn/s/blog_605b4e400100mn51.html
boa-0.94.13移植到uclinuxarms3c4510b的过程
<wbr><wbr>正在移植boa-0.94.13到uclinux上，几点笔记，大家分享。</wbr></wbr>
<wbr><wbr>编译一个linux下的c系统，包含词法和语法分析模块，Linux上用bison和flex。<br> yacc是一个文法分析器的生成器,bison即是yacc的GNU版本.Lex和YACC是用于构造词法分析机和语法解释器的工具，利用Lex和YACC你可以轻松的构造一个语法解释器。</wbr></wbr>
1. 解压boa-0.94.13.tar.gz，进入boa-0.94.13/src目录
2. ./configure，回车，生成Makefile
一开始make
错误1：
debian:/home/a/boa-0.94.13/src# make
yacc -d boa_grammar.y
make: yacc: Command not found
make: *** [y.tab.c] Error 127
<wbr><br> 解决方法：<br> debian:/home/a/boa-0.94.13/src# apt-get install bison</wbr>
错误2：
debian:/home/a/boa-0.94.13/src# make
lex boa_lexer.l
make: lex: Command not found
make: *** [lex.yy.c] Error 127
解决方法：
debian:/home/a/boa-0.94.13/src# apt-get install flex
<wbr><br> 错误3：<br> debian:/home/a/sss/boa-0.94.13/src# make<br> gcc -g -O2 -pipe -Wall -I. -c -o util.o util.c<br> util.c:100:1: error: pasting "t" and "->" does not give a valid preprocessing token<br> make: *** [util.o] Error 1<br> 解决方法：<br> 修改 src/compat.h<br> 找到<br> #define TIMEZONE_OFFSET(foo) foo##->tm_gmtoff<br> 修改成<br> #define TIMEZONE_OFFSET(foo) (foo)->tm_gmtoff</wbr>
然后
debian:/home/a/sss/boa-0.94.13/src# make clean
debian:/home/a/sss/boa-0.94.13/src# make
不过还有一个警告：
request.c: In funtion 'get_request':
request.c:84：warning: pointer targets in passing argument 3 of 'accept' differ in signedness
看着不爽，没关系
到request.c中的84行看看。
int accept(int socket, struct sockaddr *address, size_t *address_len) 原型。这里的参数类型不对。把int改为size_t 就可以了。
debian:/home/a/sss/boa-0.94.13/src# make
基本就没有问题了。
不过在运行boa的时候，能运行，ps没有这个进程
解决：
注销掉
if (setuid(0) != -1) {
DIE(”icky Linux kernel bug!”);
}
就可了，重新编译。这样生成的boa在pc机上测试没有问题
----------------------------------------------------------------------
这是网友在论坛上分享的，我刚开始测试还没有遇到过.... 希望对大家有用
(2)修改 src/log.c
注释掉
if (dup2(error_log, STDERR_FILENO) == -1) {
DIE("unable to dup2 the error log");
}
为：
否则会出现错误：
log.c:73 unable to dup2 the error log:bad file descriptor
(3)修改src/boa.c
注释掉下面两句话：
if (passwdbuf == NULL) {
DIE(”getpwuid”);
}
if (initgroups(passwdbuf->pw_name, passwdbuf->pw_gid) == -1) {
DIE(”initgroups”);
}
为
#if 0
if (passwdbuf == NULL) {
DIE(”getpwuid”);
}
if (initgroups(passwdbuf->pw_name, passwdbuf->pw_gid) == -1) {
DIE(”initgroups”);
}
#endif
否则会出现错误：boa.c:211 - getpwuid: No such file or directory
-----------------------------------------------------------------------------
交叉编译器，uclinux需要使用arm-elf-gcc编译工具，（内核2.4）
二、用arm-elf-gcc交叉编译了
1. vim Makefile，修改编译器，如下：
<wbr>当然需要确认已经安装了arm-elf工具（sh arm-elf-tools-20030314.sh）<br><wbr>CC = arm-elf-gcc -elf2flt<br><wbr>CPP =arm-elf-gcc -E<br><wbr>保存退出<br> 2. make<br><wbr>出现如下错误<br><wbr>util.c: In function `get_commonlog_time':<br><wbr>util.c:100: structure has no member named `tm_gmtoff'<br><wbr>首先会想到的是查看util.c：100附近的代码，<br><wbr>if (use_localtime) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>t = localtime(&current_time);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>time_offset = TIMEZONE_OFFSET(t);<br><wbr><wbr><wbr>} else {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>t = gmtime(&current_time);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>time_offset = 0;<br><wbr><wbr><wbr>}<br><wbr>并看不出有什么问题。<br><wbr>使用Source Insight工具查找TIMEZONE_OFFSET，找到compat.h<br><wbr>#ifdef HAVE_TM_GMTOFF<br><wbr>#define TIMEZONE_OFFSET(foo) foo##->tm_gmtoff<wbr><br><wbr>#else<br><wbr>#define TIMEZONE_OFFSET(foo) timezone<br><wbr>#endif</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
<wbr>还是这个地方，依照去掉##<br> 3. 保存退出，make<br><wbr>错误和上面一样<br> 4. 尝试别的办法，将util.c：100处的代码屏蔽，保存退出<br><wbr>make<br><wbr>编译成功<br><wbr>但是这样很可能照成boa使用过程中的错误</wbr></wbr></wbr></wbr></wbr>
<wbr>（这里我只是猜测，但是编译都没有使用tm_gmtoff，错误很可能发生）<br> 5. 最终解决办法<br><wbr>可以思考一下，当使用arm-linux-gcc编译boa时，基本都能正常编译成功，<br><wbr>而使用arm-elf-gcc编译boa则会出现错误，那最可能有问题的地方，必然是<br><wbr>交叉编译工具的问题，本人使用的是arm-elf-tools-20030314.sh<br><wbr>找到arm-elf安装目录:<wbr>/usr/local/arm-elf/<br><wbr>利用source Insight工具可以搜索“tm_gmtoff”，找到/usr/local/arm-elf/include/time.h<br><wbr>vim time.h<br><wbr>将time.h：130的条件编译代码修改为“#if 1”<br><wbr>保存退出。<br><wbr>进入boa-0.94.13/src目录，建议make clean一下<br><wbr>make<br><wbr>编译成功(掌声)</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
<wbr>（注：这只是编译成功了。没有测试）</wbr>
<wbr></wbr>
三、移植到uclinux中，替换的原来的boa文件夹，最主要的就是修改makefile文件，boa主目录里放一个Makefile, src里面那个Makefile.in 不要动，src里面那个Makefile删掉，自己写个Makefile放里面，下面是我的Makefile（千万不要再用configure生产Makefile文件了，这样通不过uclinux的编译）
---------------------------------------------------
Makefile（boa主目录里的）
.EXPORT_ALL_VARIABLES:
DIRS = src
all romfs:
<wbr>for i in $(DIRS) ; do make -C $$i $@ || exit $?; done</wbr>
clean:
<wbr>for i in $(DIRS) ; do make -C $$i clean ; done</wbr>
-----------------------------------------------------
Makefile（src里的）
EXEC = boa
OBJS = alias.o boa.o buffer.o cgi.o cgi_header.o config.o escape.o get.o \
<wbr><wbr><wbr>hash.o ip.o log.o mmap_cache.o pipe.o queue.o read.o request.o \<br><wbr><wbr><wbr>response.o select.o signals.o timestamp.o util.o sublog.o y.tab.o\<br><wbr><wbr><wbr>lex.yy.o</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
FLTFLAGS += -s 8192
EXTRALIBS = $(LIBCRYPT)
ifdef CONFIG_USER_BOA_WITH_SSL
CFLAGS += $(INCSSL) -DSERVER_SSL=1
EXTRALIBS += $(LIBSSL) $(LIBCRYPTO)
endif
N style="COLOR: #000000">ifdef CONFIG_USER_TINYLOGIN_SHADOWPASSWDS
CFLAGS += -DSHADOW_AUTH
endif
ifdef CONFIG_USER_OLD_PASSWORDS
CFLAGS += -DOLD_CONFIG_PASSWORDS
endif
all: $(EXEC)
$(EXEC): $(OBJS)
<wbr>$(CC) $(LDFLAGS) -o $@ $(OBJS) $(EXTRALIBS) $(LDLIBS) -lcrypt_old</wbr>
romfs:
<wbr>$(ROMFSINST) /bin/$(EXEC)</wbr>
clean:
<wbr>-rm -f $(EXEC) *.gdb *.elf *.o</wbr>
----------------------------------------------------------
完毕之后，编译，就会出现没有移植时的那个错误，
出现如下错误
<wbr>util.c: In function `get_commonlog_time':<br><wbr>util.c:100: structure has no member named `tm_gmtoff'<br> 该改的都改了，这个问题真难了我了，</wbr></wbr>
<wbr>1、再次尝试，将util.c：100处的代码屏蔽，保存退出<br><wbr>make user_only<br><wbr>编译通过（掌声）（这样可能会出项想不到问题）</wbr></wbr></wbr>
<wbr>为了彻底解决这个问题，不让有什么后遗症，我把源码看了一遍，发现util.c: 100</wbr>
<wbr><wbr><wbr><wbr>if (use_localtime) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>t = localtime(&current_time);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>time_offset = TIMEZONE_OFFSET(t);<br><wbr><wbr><wbr>} else {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>t = gmtime(&current_time);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>time_offset = 0;<br><wbr><wbr><wbr>}</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
<wbr>这个变量use_localtime没什么用处，就这一个地方使用，boa.conf里这么介绍</wbr>
<wbr>#是否使用本地时间。如果没有注释掉，则使用本地时间。注释掉则使用UTC 时间<br><wbr>#UseLocaltime</wbr></wbr>
<wbr>一般是把它注掉的，所以， time_offset = TIMEZONE_OFFSET(t);我就直接注掉了，理论上是没有问题。</wbr>
<wbr>2、编译是通过了，可是问题又来了，编译好的uimage.rom 烧到板子上，发现boa死了，没有运行起来，看了下启动信息，启动了了呀，怎么就死了呢？</wbr>
<wbr>在板子上手动启动boa</wbr>
<wbr># boa &</wbr>
<wbr>出现错误</wbr>
<wbr>Fork：pars.........（不好意思，这里的错误没有记住）</wbr>
<wbr>（我把fork改成vfork了啊，怎么还会出这样的错误），找半天，终于找到出错的地方boa.c: 138，</wbr>
<wbr><wbr><wbr><br><wbr><wbr><wbr>if (do_fork) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>switch(fork()) {<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>case -1:<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>perror("fork");<wbr><wbr>//就只这里了<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>exit(1);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>break;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>case 0:<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>break;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>default:<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>exit(0);<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr><wbr>break;<br><wbr><wbr><wbr><wbr><wbr><wbr><wbr>}<br><wbr><wbr><wbr>}</wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr></wbr>
我发现这个段落无非是background ourself ，我的启动脚本里做了这样工作，我直接不要了，注掉。
<wbr>编译以后，再烧到板子上，测试，正常（掌声）。（不正常的还没测出来，哈哈）</wbr>
<wbr>共同学习(<a href="http://www.firnow.com%29:http//dev.firnow.com/course/6_system/linux/Linuxjs/20091020/179551_3.html" style="text-decoration:none; color:rgb(9,67,130)">www.firnow.com):http://dev.firnow.com/course/6_system/linux/Linuxjs/20091020/179551_3.html</a></wbr>