[Bug general/5074] New: Missing foo.h: bar.java dependencies in build system

[Bug general/5074] New: Missing foo.h: bar.java dependencies in build system

[pmachata at redhat dot com]

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Every once in a while, on a multi-cpu machine, with high -j values, frysk build
mysteriously dies with this synopsis:

<obnoxious gcj command, entwined in shellouts, checks and scripts>
../../frysk-sys/lib/dwfl/DwarfDieFactory.java:76: error: Type ‘DwTag’ not found
in the declaration of the local variable ‘tagEncodings’.
        DwTag[] tagEncodings = DwTag.values();
           ^
../../frysk-sys/lib/dwfl/DwarfDieFactory.java:82: error: Type ‘DwTag’ not found
in the declaration of the local variable ‘tag’.
            DwTag tag = tagEncodings[i];
               ^
2 errors
make[1]: *** [lib/dwfl/Dwfl.h] Error 1
make[1]: *** Waiting for unfinished jobs....
chmod a-w lib/dwfl/DwTag.tmp
mv -f lib/dwfl/DwTag.tmp lib/dwfl/DwTag.java
make[1]: Leaving directory
`/usr/src/redhat/BUILD/frysk-0.0.1.2007.09.24/build/frysk-sys'
make: *** [all-recursive] Error 1

The problem is that for building Dwfl.h, frysk build system first compiles
.class files, and then induces appropriate .h files from them by way of gcjh. 
This is expressed in .java.h implicit rule.  But to build .class files, compiler
needs DwTag.java and other files... and this dependency isn't stated in Makefile.

-- 
           Summary: Missing foo.h: bar.java dependencies in build system
           Product: frysk
           Version: unspecified
            Status: NEW
          Severity: normal
          Priority: P2
         Component: general
        AssignedTo: frysk-bugzilla at sourceware dot org
        ReportedBy: pmachata at redhat dot com
 GCC build triplet: x86_64-unknown-linux-gnu
  GCC host triplet: x86_64-unknown-linux-gnu
GCC target triplet: x86_64-unknown-linux-gnu
OtherBugsDependingO 1600
             nThis:


http://sourceware.org/bugzilla/show_bug.cgi?id=5074

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[Bug general/5074] Missing foo.h: bar.java dependencies in build system

[pmachata at redhat dot com]

------- Additional Comments From pmachata at redhat dot com  2007-09-27 23:27 -------
Created an attachment (id=2024)
 --> (http://sourceware.org/bugzilla/attachment.cgi?id=2024&action=view)
Log file demonstrating the problem.


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[Bug general/5074] Missing foo.h: bar.java dependencies in build system

[mark at klomp dot org]

------- Additional Comments From mark at klomp dot org  2007-09-28 07:38 -------
Is this on Fedora 7? Then it might be related/the same as bug #4742

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[Bug general/5074] Missing foo.h: bar.java dependencies in build system

[pmachata at redhat dot com]

------- Additional Comments From pmachata at redhat dot com  2007-09-28 10:08 -------
RHEL 5, gcc-java-4.1.1-52.
This doesn't seem to be the case however.  Dependency file (Dwfl.Po in this
case) is present, and non-empty, but it only describes dependencies of Dwfl.o,
not Dwfl.h.

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[Bug general/5074] Missing foo.h: bar.java dependencies in build system

[cagney at redhat dot com]

------- Additional Comments From cagney at redhat dot com  2007-10-05 15:57 -------
All the generated java files need to be created; before starting on the .h
files.  Some of the .h source (.java) files may be importing generated .java files.


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[Bug general/5074] Missing foo.h: bar.java dependencies in build system

[cagney at redhat dot com]

-- 
           What    |Removed                     |Added
----------------------------------------------------------------------------
         AssignedTo|frysk-bugzilla at sourceware|cagney at redhat dot com
                   |dot org                     |
             Status|NEW                         |ASSIGNED


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