Strange behavior of javac

[Maurizio Cimadamore]

Max (Weijun) Wang wrote:
>> *"Note:   The directory specified by -d  is not automatically added 
>> to your user class path."
>
> I don't mean to use -d for -cp.
>
> Please note that I'm not using an installed JDK, but a newly built jdk 
> (with class files in /classes instead of rt.jar), so $JM/classes 
> should be already at the top of bootclasspath.
Ok, now I got what you mean. Have you tried printing all the search path 
being used by your javac? You can do that by adding the '-verbose' 
option. At the very beginning of your output you should have an entry 
for $JM/classes; if you don't have that entry that means that 
$JM/classes is not used as a search path for classes (in that case it 
could be a simple problem due to the way in which javac is launched, 
e.g. bootclasspath is not specified properly).

Maurizio
>
>   $ javap x.A
>   Compiled from "A.java"
>   public class x.A extends java.lang.Object {
>       public x.A();
>   }
>
>   $ javac -d $JM/classes B.java
>   B.java:1: cannot find symbol
>   symbol: class A
>   package x; public class B extends A {}
>                                   ^
>   1 error
>
> May this is a class loader issue?
>
> Max
>
> On Sep 24, 2008, at 8:16 PM, Maurizio Cimadamore wrote:
>
>> Hi Max
>> If you read this document:
>>
>> http://java.sun.com/javase/6/docs/technotes/tools/solaris/javac.html
>>
>> You'll find the following line:*
>>
>> *"Note:   The directory specified by -d  is not automatically added 
>> to your user class path."
>>
>> Which seems to suggest that the standard behavior is not to add the 
>> destination directory to the classpath; as a consequence your second 
>> compilation must fail, as javac cannot find any class/sources under ./x/
>>
>> It seems like your Linux box with the latest openjdk build is not 
>> behaving as expected - as it ends up in adding the destination 
>> directory to your classpath. But I might be wrong.
>>
>> FYI, under Ubuntu 8.04 your commands fail using both openjdk-6 and 
>> 1.6.0_06 compilers.
>>
>> Jon, any ideas?
>> Maurizio
>>
>> Max (Weijun) Wang wrote:
>>> Hi All
>>>
>>> I just built a bsd-port openjdk, the last of the following commands 
>>> fails.
>>>
>>> cd /tmp
>>> echo 'package x; public class A {}' > A.java
>>> javac -d $JM/classes A.java
>>> echo 'package x; public class B extends A {}' > B.java
>>> javac -d $JM/classes B.java
>>>
>>>  B.java:1: cannot find symbol
>>>  symbol: class A
>>>  package x; public class B extends A {}
>>>                                  ^
>>>  1 error
>>>
>>> (Here $JM is the newly built jdk, javac is the compiler in $JM/bin)
>>>
>>> As I understand, the second javac call should be able to load class 
>>> A from $JM/classes/x/A.class. This is true on my Linux box with the 
>>> latest openjdk build.
>>>
>>> Any ideas?
>>>
>>> Thanks
>>> Max
>>>
>>
>