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Make 3.81 and 3.82 break on parallel build
From: |
david . hagood |
Subject: |
Make 3.81 and 3.82 break on parallel build |
Date: |
Wed, 16 Nov 2011 12:32:01 -0600 |
User-agent: |
SquirrelMail/1.4.21 |
I have a make file that includes a set of machine generated dependency
files. Those files describe a set of shared libraries to be build, of the
form:
somedir/libfoo.so: somedir/libbar.so somedir/libbaz.so
Note that "libfoo.so" has explicitly stated it depends upon
somedir/libbar.so.
libbar.so has a similar dependency file that describes its needs:
somedir/libbar.so: somedir/libbaz.so otherdir/bar.o
My make file then is commanded to build the various files:
.PHONEY: mytarget
mytarget: somedir/libfoo.so somedir/libbar.so somedir/libbaz.so
If I run a plain make:
make mytarget
all is well: Make correctly builds otherdir/bar.o, somedir/libbaz.so,
somedir/libbar.so, then finally somedir/libfoo.so, in that order.
However, if I run a parallel make:
make -j4 mytarget
then make will happly start building everything, and will try to link
somedir/libfoo.so before even STARTING on linking somedir/libbar.so.
Again: all the dependencies are fully described: there's no reason make
shouldn't see that it has to wait before building somedir/libfoo.so.
- Make 3.81 and 3.82 break on parallel build,
david . hagood <=
- Re: Make 3.81 and 3.82 break on parallel build, Paul Smith, 2011/11/16
- Re: Make 3.81 and 3.82 break on parallel build, david . hagood, 2011/11/16
- Re: Make 3.81 and 3.82 break on parallel build, Paul Smith, 2011/11/16
- Re: Make 3.81 and 3.82 break on parallel build, David Hagood, 2011/11/16
- RE: Make 3.81 and 3.82 break on parallel build, Lawrence Ibarria, 2011/11/16
- RE: Make 3.81 and 3.82 break on parallel build, David Hagood, 2011/11/16
- Re: Make 3.81 and 3.82 break on parallel build, Paul Smith, 2011/11/16
- Re: Make 3.81 and 3.82 break on parallel build, Kamil Mierzejewski, 2011/11/17