[bug #65455] Fails to build with parallel make

[Eli Schwartz]

URL:
  <https://savannah.gnu.org/bugs/?65455>

                 Summary: Fails to build with parallel make
                   Group: DDD
               Submitter: eschwartz
               Submitted: Mon 11 Mar 2024 09:48:52 PM UTC
                Category: None
                Severity: 3 - Normal
              Item Group: None
                  Status: None
                 Privacy: Public
             Assigned to: None
             Open/Closed: Open
                 Release: None
         Discussion Lock: Any


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Follow-up Comments:


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Date: Mon 11 Mar 2024 09:48:52 PM UTC By: Eli Schwartz <eschwartz>
Originally reported at https://bugs.gentoo.org/696934

In Makefile.am

 # Make sure needed headers are built before trying to compile these files
 # (Assume ddd.C is the first source file to be built.)

This is not a good assumption when people use make -j$(nproc). Please either:

fully list headers, as such:

-resources.o: Ddd.ad.h
-show.o: build.h
+resources.o: Ddd.ad.h version.h
+show.o: build.h host.h version.h


or else, use BUILT_SOURCES to indicate files that should be built early.







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