[mvapich-discuss] Problems building MVAPICH2 2.3.4 w/o flex

[Subramoni, Hari]

Hi, Dan.

We looked at the history of these files. It looks like we added these to the code base after MVAPICH2 1.8 to avoid the dependency of lex/yacc. Given this, we decided to add these files back to the code base. It will be available with the next release.

Sorry for the trouble and many thanks again for bringing this to our attention.

Best,
Hari.

-----Original Message-----
From: Subramoni, Hari 
Sent: Wednesday, July 1, 2020 10:39 AM
To: Dan Pou <daniel.pou at hpe.com>
Cc: mvapich-discuss at cse.ohio-state.edu; Subramoni, Hari <subramoni.1 at osu.edu>
Subject: RE: [mvapich-discuss] Problems building MVAPICH2 2.3.4 w/o flex

Hi, Dan.

Sure, we will update configure to add a check for lex/yacc.

Thx,
Hari.

-----Original Message-----
From: Dan Pou <daniel.pou at hpe.com>
Sent: Wednesday, July 1, 2020 10:31 AM
To: Subramoni, Hari <subramoni.1 at osu.edu>
Cc: mvapich-discuss at cse.ohio-state.edu <mvapich-discuss at mailman.cse.ohio-state.edu>
Subject: Re: [mvapich-discuss] Problems building MVAPICH2 2.3.4 w/o flex

It looks like 2.3.4 cleaned up some generated files, which is fine. It is just helpful to have a useful error. Some minimal installs do not have all development tools installed.
At first, I thought it was due to the byacc warning
parser.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr] src/pm/mpirun/src/hostfile/src_pm_mpirun_src_hostfile_libhostfile_a-parser.h.

-Dan

On Wed, Jul 01, 2020 at 02:15:48PM +0000, Subramoni, Hari wrote:
>Hi, Dan.
>
>Thanks for pointing this out to us. We appreciate it.
>
>We will explicitly add YACC/LEX as a dependency.
>
>Since these are temporary files which get regenerated when we do a build we had deleted it. If you think it is beneficial for these files to be included in the tarball, please let us know.
>
>Best,
>Hari.
>
>-----Original Message-----
>From: mvapich-discuss-bounces at cse.ohio-state.edu
><mvapich-discuss-bounces at mailman.cse.ohio-state.edu> On Behalf Of Dan 
>Pou
>Sent: Wednesday, July 1, 2020 9:19 AM
>To: mvapich-discuss at cse.ohio-state.edu
><mvapich-discuss at mailman.cse.ohio-state.edu>
>Subject: [mvapich-discuss] Problems building MVAPICH2 2.3.4 w/o flex
>
>Resending, because of a mail configuration error.
>
>The 2.3.4 release fails to build if you don't have flex (or suitable lex command) installed.
>The build does not flag lex as missing, just errors out with a missing file.
>The ylwrap LEX command is just : in a build without flex, it called flex after I installed it.
>
>It looks like the file
>mvapich2-2.3.3/src/pm/mpirun/src/hostfile/scanner.c
>was shipped in the 2.3.3 release, but not in 2.3.4.
>
>   YACC     src/pm/mpirun/src/hostfile/src_pm_mpirun_src_hostfile_libhostfile_a-parser.c
>mvapich2-2.3.4/src/pm/mpirun/src/hostfile/parser.y: warning: 2 shift/reduce conflicts [-Wconflicts-sr] src/pm/mpirun/src/hostfile/src_pm_mpirun_src_hostfile_libhostfile_a-parser.h is unchanged
>   CC       src/pm/mpirun/src/hostfile/src_pm_mpirun_src_hostfile_libhostfile_a-parser.o
>   LEX      src/pm/mpirun/src/hostfile/scanner.c
>   CC       src/pm/mpirun/src/hostfile/scanner.o
>gcc: error: src/pm/mpirun/src/hostfile/scanner.c: No such file or 
>directory
>
>Thanks,
>-Dan
>
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