TL make/modules/Makefile requires ALT_JDK_IMPORT_PATH

[Mark Reinhold]

I tried building the modules target in the current TL forest with this
command:

  $ make JDK_BUILD_TARGETS=modules jdk_only

but ran into the following error:

  >>>Making gen-classlist @ Thu Jan  7 09:57:24 PST 2010 ...
  /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-i586/bin/java -XX:-PrintVMOptions -XX:+UnlockDiagnosticVMOptions -XX:-LogVMOutput -client -Xmx896m -Xms128m -XX:PermSize=32m -XX:MaxPermSize=160m -Xbootclasspath:/w/tl/build/classes \
                  -Dclassanalyzer.debug \
                  -jar /w/tl/build/btjars/classanalyzer.jar \
                  -jdkhome /w/tl/build \
                  -config modules.config \
                  -config modules.group \
                  -depconfig jdk7.depconfig \
                  -depconfig optional.depconfig \
                  -showdynamic \
                  -output /w/tl/build/tmp/modules/classlist
  make[4]: /NOT-SET/re/jdk/1.7.0/promoted/latest/binaries/linux-i586/bin/java: Command not found
  make[4]: *** [gen-classlist] Error 127

It looks like your use of JAVA_TOOLS_DIR in the gen-classlist target
winds up requiring that ALT_JDK_IMPORT_PATH be set, but it shouldn't
be necessary to set that variable when doing a full build [1].

This isn't a critical issue -- the workaround is simple enough -- but it
would be good to fix it at some point.

- Mark


[1] http://mail.openjdk.java.net/pipermail/build-dev/2009-October/002457.html