[issue29365] parallel make test or make install can fail building pgen when configure --enable-optimizations is used

[Gregory P. Smith]

Gregory P. Smith added the comment:

great, the issue you filed covers my second paragraph comment which really 
should be its own issue. :)

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[issue29365] parallel make test or make install can fail building pgen when configure --enable-optimizations is used

[Xiang Zhang]

Xiang Zhang added the comment:

> Making the suggested "make, make test, make install" process effectively 
> useless or at least take 3x longer than it should.

About this, I once opened #29243.

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[issue29365] parallel make test or make install can fail building pgen when configure --enable-optimizations is used

[Gregory P. Smith]

New submission from Gregory P. Smith:

If you do a make -j12 test or make install before having run a separate 'make 
all' the build _can_ fail trying to build pgen.  (it seems to be parallel make 
related, it won't always fail)

Even if you have run a separate 'make all', the make test and make install 
steps are likely to rebuild a ton of stuff and rerun the profile generation 
stage.  Making the suggested "make, make test, make install" process 
effectively useless or at least take 3x longer than it should.

something along the lines of:

oss/cpython$ make -j12 install
gcc -pthread -DNDEBUG -g -fwrapv -O3 -Wall -Wstrict-prototypes  
Parser/acceler.o Parser/grammar1.o Parser/listnode.o Parser/node.o 
Parser/parser.o Parser/parsetok.o Parser/bitset.o Parser/metagrammar.o 
Parser/firstsets.o Parser/grammar.o Parser/pgen.o Objects/obmalloc.o 
Python/mysnprintf.o Python/pyctype.o Parser/tokenizer_pgen.o 
Parser/printgrammar.o Parser/pgenmain.o -lpthread -ldl  -lutil -o Parser/pgen
Parser/grammar1.o: In function `PyGrammar_LabelRepr':
/home/gps/oss/cpython/build27/../2.7/Parser/grammar1.c:35: undefined reference 
to `__gcov_indirect_call_profiler'
Parser/grammar1.o: In function `PyGrammar_FindDFA':
/home/gps/oss/cpython/build27/../2.7/Parser/grammar1.c:13: undefined reference 
to `__gcov_indirect_call_profiler'
Parser/grammar1.o:(.data+0x80): undefined reference to `__gcov_merge_add'
Parser/grammar1.o: In function `_GLOBAL__sub_I_65535_0_PyGrammar_FindDFA':
/home/gps/oss/cpython/build27/../2.7/Parser/grammar1.c:57: undefined reference 
to `__gcov_init'
... a bunch more similar errors omitted ...
Parser/pgenmain.o: In function `_GLOBAL__sub_I_65535_0_Py_Exit':
/home/gps/oss/cpython/build27/../2.7/Parser/pgenmain.c:173: undefined reference 
to `__gcov_init'
collect2: error: ld returned 1 exit status
make: *** [Parser/pgen] Error 1
make: *** Waiting for unfinished jobs
Parser/pgen ../2.7/Grammar/Grammar Include/graminit.h Python/graminit.c
make[2]: Parser/pgen: Command not found
make[2]: *** [Include/graminit.h] Error 127
make[2]: *** Waiting for unfinished jobs
make[2]: Leaving directory `/home/gps/oss/cpython/build27'
make[1]: *** [build_all_generate_profile] Error 2
make[1]: Leaving directory `/home/gps/oss/cpython/build27'
make: *** [profile-opt] Error 2

--
components: Build
messages: 286223
nosy: gregory.p.smith
priority: normal
severity: normal
status: open
title: parallel make test or make install can fail building pgen when configure 
--enable-optimizations is used
type: compile error
versions: Python 2.7, Python 3.6, Python 3.7

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