Build jaxp

[dmik]

Build the JAXP (Java API for XML Processing) component (make jaxp).

[dmik]

We need JAXP to build JDK.

There are two options:

• import JAXP from the bootstrap JDK
• provide the JAXP source drop within the OpenJDK tree

Taking into account that our bootstrap JDK is 1.5 (which contains a little bit older version of JAXP) I will start with the second way. More over, the OpenJDK 7 guys do it too.

[dmik]

Just for the record, JAXP starts to be necessary since the java\util\XMLUtils.java source (not a surprise).

[dmik]

Unfortunately, I can't build JAXP with JDK 1.5.07 on OS/2 -- it gives me this somewhere during the build process:

build:
    [javac] Compiling 1876 source files to D:\Coding\javaos2\openjdk\jaxp\build\classes
    [javac] An exception has occurred in the compiler (1.5.0_07). Please file a bug at the Java Developer Connection (ht
tp://java.sun.com/webapps/bugreport)  after checking the Bug Parade for duplicates. Include your program and the followi
ng diagnostic in your report.  Thank you.
    [javac] java.lang.NullPointerException
    [javac]     at com.sun.tools.javac.parser.Scanner.makeByteBuffer(Scanner.java:255)
    [javac]     at com.sun.tools.javac.parser.Scanner.<init>(Scanner.java:238)
    [javac]     at com.sun.tools.javac.parser.Scanner$Factory.newScanner(Scanner.java:72)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:254)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.parse(JavaCompiler.java:281)
    [javac]     at com.sun.tools.javac.main.JavaCompiler.compile(JavaCompiler.java:398)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:592)
    [javac]     at com.sun.tools.javac.main.Main.compile(Main.java:544)
    [javac]     at com.sun.tools.javac.Main.compile(Main.java:67)
    [javac]     at com.sun.tools.javac.Main.main(Main.java:52)

I will try to import JAXP from the OpenJDK 6 Windows build that I have made some moths ago.

[dmik]

Crappy REXX. It stupidly interprets in the middle of the argument as a comment character and discards the rest of the string which completely breaks ant (where ant.cmd is used as a launcher) since we need to pass URLs to it. Crap-crap-crap.

[dmik]

Ah, I now recalled that it may be solved system-wide by switching from Classic REXX (which is the default) to Object REXX using SWITCHRX.CMD. Very good. I'll put this to README as a requirement.

[dmik]

Obviously, the JDK import mechanism is not working; I can't find a way to cause it to take the built JAXP classes from a different place for the JDK compile stage. Will have to dig more into these cumbersome makefiles.

[dmik]

Okay, found the reason. A (single) file named "components_imported" is used as a flag whether the components should be imported or not. However, this file doesn't depend on anything so once it is created, make always think that the necessary stuff is imported regardless of whether it is actually is or if there are any updated files and so on.

The solution is to either delete this file manually or run the clean (!) target.

Anyway, JAXP is being imported now.

[dmik]

r259 makes it build.