postgresql Ubuntu：如何安装 flex 来制作 postgres？
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Ubuntu: how to install flex to make postgres?
提问by James
I'm trying to work on postgresql locally with ubuntu 10.04. I get this error after I configure with
我正在尝试使用 ubuntu 10.04 在本地处理 postgresql。配置后出现此错误
./configure --enable-cassert --enable-debug --prefix=$HOME/pgsql
when I make && make install I get this error:
当我 make && make install 时出现此错误：
make -C parser all
make[3]: Entering directory `/home/james/school/db/pg-stuff/hw1/postgresql-8.4.2/src/backend/parser'
ERROR: `flex' is missing on your system. It is needed to create the
file `scan.c'. You can either get flex from a GNU mirror site
or download an official distribution of PostgreSQL, which contains
pre-packaged flex output.
make[3]: *** [scan.c] Error 1
make[3]: Leaving directory `/home/james/school/db/pg-stuff/hw1/postgresql-8.4.2/src/backend/parser'
make[2]: *** [parser-recursive] Error 2
make[2]: Leaving directory `/home/james/school/db/pg-stuff/hw1/postgresql-8.4.2/src/backend'
make[1]: *** [all] Error 2
make[1]: Leaving directory `/home/james/school/db/pg-stuff/hw1/postgresql-8.4.2/src'
make: *** [all] Error 2
I tried to
我试过了
apt-get install flexbut I get the same error. How can I install flex so that this will work?
apt-get install flex但我得到了同样的错误。我如何安装 flex 才能使其正常工作？
回答by ivotron
You need to run ./configureagain so that the make files are "aware" of flex.
您需要./configure再次运行，以便 make 文件“知道”flex。
回答by M. Tibbits
You can install postgresql directly using:
您可以使用以下命令直接安装 postgresql：
sudo apt-get install postgresql-8.4
I don't understand how you could get the same error if you ran:
我不明白如果你运行，你怎么会得到同样的错误：
sudo apt-get install flex
mypc:~/> sudo apt-get install flex
mypc:~/> sudo apt-get install flex
Reading package lists... Done
阅读包裹清单...完成
Building dependency tree
构建依赖树
Reading state information... Done
读取状态信息...完成
Suggested packages:
推荐套餐：
bison
野牛
The following NEW packages will be installed:
将安装以下新软件包：
flex
柔性
0 upgraded, 1 newly installed, 0 to remove and 0 not upgraded.
0 个升级，1 个新安装，0 个删除，0 个未升级。
Need to get 261kB of archives.
需要获得 261kB 的档案。
After this operation, 1,032kB of additional disk space will be used.
此操作后，将使用 1,032kB 的额外磁盘空间。
Get:1 http://us.archive.ubuntu.com/ubuntu/lucid/main flex 2.5.35-9 [261kB]
获取：1 http://us.archive.ubuntu.com/ubuntu/lucid/mainflex 2.5.35-9 [261kB]
Fetched 261kB in 1s (247kB/s)
1 秒内获取 261kB (247kB/s)
Selecting previously deselected package flex.
选择以前取消选择的包 flex。
(Reading database ... 208958 files and directories currently installed.)
（正在读取数据库...当前安装了 208958 个文件和目录。）
Unpacking flex (from .../flex_2.5.35-9_amd64.deb) ...
解压 flex（来自 .../flex_2.5.35-9_amd64.deb）...
Processing triggers for install-info ...
处理安装信息的触发器...
Processing triggers for man-db ...
处理 man-db 的触发器...
Setting up flex (2.5.35-9) ...
设置 flex (2.5.35-9) ...
Because this package doesn't build anything. When I run the above command under KUbuntu 10.04, I get the following output:
因为这个包没有构建任何东西。当我在 KUbuntu 10.04 下运行上述命令时，我得到以下输出：
.
.
