我正在学习ASDF但是在加载定义的系统时遇到了奇怪的问题。这是一些信息。 我使用单行内容定义了一个名为“hello.asd”的.asd文件:
(asdf:defsystem :hellosystem)
我将此文件放入名为“ / tmp / pkg ”的目录中。之后,我运行SBCL并尝试加载它。这是输出:
This is SBCL 1.1.12, an implementation of ANSI Common Lisp.
More information about SBCL is available at <http://www.sbcl.org/>.
SBCL is free software, provided as is, with absolutely no warranty.
It is mostly in the public domain; some portions are provided under
BSD-style licenses. See the CREDITS and COPYING files in the
distribution for more information.
* (asdf:asdf-version)
"3.0.2"
* (push #P"/tmp/pkg/" asdf:*central-registry*)
(#P"/tmp/pkg/" #P"/Users/wuli2/quicklisp/quicklisp/")
* (asdf:load-system :hellosystem)
debugger invoked on a ASDF/FIND-SYSTEM:MISSING-COMPONENT:
Component :HELLOSYSTEM not found
Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL.
restarts (invokable by number or by possibly-abbreviated name):
0: [ABORT] Exit debugger, returning to top level.
((:METHOD ASDF/OPERATE:OPERATE (SYMBOL T)) ASDF/LISP-ACTION:LOAD-OP :HELLOSYSTEM) [fast-method]
0] 0
* (asdf:load-system :hello)
debugger invoked on a ASDF/FIND-SYSTEM:MISSING-COMPONENT:
Component :HELLO not found
Type HELP for debugger help, or (SB-EXT:EXIT) to exit from SBCL.
restarts (invokable by number or by possibly-abbreviated name):
0: [ABORT] Exit debugger, returning to top level.
((:METHOD ASDF/OPERATE:OPERATE (SYMBOL T)) ASDF/LISP-ACTION:LOAD-OP :HELLO) [fast-method]
0] 0
* (asdf:load-system :hellosystem)
T
*
请注意,我第一次尝试加载系统:hellosystem 时,失败了。所以我加载系统:你好,我觉得它可能需要一个文件名,它再次失败。当我偶尔再次运行加载系统:hellosystem 时,这种情况发生了,它起作用了。
所以我做了另一个测试,更改文件名让它与系统名称相同。然后运行asdf:load-system,它直接工作。
我非常困惑,我在ASDF手册中找不到这两个名字应该相同的线索吗?
有人可以给我一些见解吗?
谢谢,
吴
答案 0 :(得分:3)
我发现了这个线索:“注意系统的名称被指定为字符串或符号,通常是关键字。如果是符号(包括关键字),则其名称是小写的。名称必须是一个合适的值:name initarg to make-pathname在任何文件系统中找到系统。“
http://common-lisp.net/project/asdf/asdf/Using-ASDF.html
消息是(asdf:defsystem <symbol> ...)
表单应驻留在名为<lowercased-symbol>.asd
的文件中。如果使用字符串命名系统,则文件名应使用该字符串。