Configure: tweak config.sh for easier noise-free checksum

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From @jimc

Created by @jimc

The header info in config.sh currently has a number of fields whose
values are unconstrained and essentially random​: ($cf_time, $cf_by,
$cf_email, $myuname).

# Package name : perl5
# Source directory : .
# Configuration time​: Fri Aug 28 21​:09​:08 MDT 2015
# Configured by : jimc
# Target system : linux groucho.jimc.earth
4.2.0-rc7-x2a-00125-gd0b89bd #278 smp sat a
ug 22 13​:35​:17 mdt 2015 x86_64 x86_64 x86_64 gnulinux

The presence of these cf_* fields means that `md5sum config.sh` output
is all noise; otherwize identical builds done at different times by
different users will have different checksums.

So this patch tweaks Configure (or rather 2 configure units - only 1
is needed, git add -i the desired chunk) to mark those problematic
lines with a leading '#​:', making them easy to exclude from a
grep|cksum calculation.

  cfx_md5=`grep -v '^#​:' config.sh | grep -vE '^cf_|^my' | md5sum`
  echo cfx_md5=\'$cf_md5\' >> config.sh

So this is a small step towards adding -k<checksum> into the perl
executable's name, and into its @​INC paths.

NOTES​:

1- tested by tweaking Configure, appending to config.sh, building, and
  verifying `./perl -Ilib -V​:cfx_md5​:`. Patched blindly into
  metaconfig units.

2- no >> config.sh actually done here, there might be a better way..

3- cfx_md5 could have a better name (subject to bikeshedding),
  md5 says nothing about what is included in the calculation.

4- multiple cfx_*, each with different subsets of `cat config.sh`,
  could define different "equivalent configs".

  For example​:
  cfx_cfargs=`grep config_args config.sh | md5sum`
  echo cfx_cfargs=\'$cfx_cfargs\' >> config.sh

  cfx_cfargs would neatly map the ~16 Test-Smoke configs to a small
  set of unique and eventually recognizable [0-9a-f]{3,5} key-fragments.

  cfx_md5 as given above would define comparable builds;
  Porting/bench.pl performance results from 2 platforms with
  identical keys should have similar results

Perl Info

Flags:
    category=core
    severity=low

Site configuration information for perl 5.25.3:

Configured by jimc at Sat Jun 25 06:51:35 MDT 2016.

Summary of my perl5 (revision 5 version 25 subversion 3) configuration:
  Local Commit: 34091a802e8ba014b1260cb5a216c48e0282fa6f
  Ancestor: 3957d52baeb5e1bbf9b604a39b98e29377008675
  Platform:
    osname=linux
    osvers=4.5.6-300.fc24.x86_64
    archname=x86_64-linux
    uname='linux buffy.jimc.earth 4.5.6-300.fc24.x86_64 #1 smp wed jun 1
21:29:58 utc 2016 x86_64 x86_64 x86_64 gnulinux '
    config_args='-des -DDEBUGGING -Dusedevel -Accflags=-DPERL_MEM_LOG
-DPERL_TRACE_OPS'
    hint=recommended
    useposix=true
    d_sigaction=define
    useithreads=undef
    usemultiplicity=undef
    use64bitint=define
    use64bitall=define
    uselongdouble=undef
    usemymalloc=n
    bincompat5005=undef
  Compiler:
    cc='cc'
    ccflags ='-DPERL_MEM_LOG -DPERL_TRACE_OPS -fwrapv -DDEBUGGING
-fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
    optimize='-O2 -g'
    cppflags='-DPERL_MEM_LOG -DPERL_TRACE_OPS -fwrapv -DDEBUGGING
-fno-strict-aliasing -pipe -fstack-protector-strong -I/usr/local/include'
    ccversion=''
    gccversion='6.1.1 20160510 (Red Hat 6.1.1-2)'
    gccosandvers=''
    intsize=4
    longsize=8
    ptrsize=8
    doublesize=8
    byteorder=12345678
    doublekind=3
    d_longlong=define
    longlongsize=8
    d_longdbl=define
    longdblsize=16
    longdblkind=3
    ivtype='long'
    ivsize=8
    nvtype='double'
    nvsize=8
    Off_t='off_t'
    lseeksize=8
    alignbytes=8
    prototype=define
  Linker and Libraries:
    ld='cc'
    ldflags =' -fstack-protector-strong -L/usr/local/lib'
    libpth=/usr/local/lib /usr/lib /lib/../lib64 /usr/lib/../lib64 /lib
/lib64 /usr/lib64 /usr/local/lib64
    libs=-lpthread -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc
-lgdbm_compat
    perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
    libc=libc-2.23.so
    so=so
    useshrplib=false
    libperl=libperl.a
    gnulibc_version='2.23'
  Dynamic Linking:
    dlsrc=dl_dlopen.xs
    dlext=so
    d_dlsymun=undef
    ccdlflags='-Wl,-E'
    cccdlflags='-fPIC'
    lddlflags='-shared -O2 -g -L/usr/local/lib -fstack-protector-strong'

Locally applied patches:
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@INC for perl 5.25.3:
    lib
    /usr/local/lib/perl5/site_perl/5.25.3/x86_64-linux
    /usr/local/lib/perl5/site_perl/5.25.3
    /usr/local/lib/perl5/5.25.3/x86_64-linux
    /usr/local/lib/perl5/5.25.3
    /usr/local/lib/perl5/site_perl
    .


Environment for perl 5.25.3:
    HOME=/home/jimc
    LANG=en_US.UTF-8
    LANGUAGE (unset)
    LD_LIBRARY_PATH (unset)
    LOGDIR (unset)

PATH=/usr/lib64/qt-3.3/bin:/usr/lib64/ccache:/usr/local/bin:/usr/local/sbin:/usr/bin:/usr/sbin:/home/jimc/.local/bin:/home/jimc/bin
    PERL_BADLANG (unset)
    SHELL=/bin/bash

[p5pRT]

From @jimc

[jimc@​buffy perl.git]$ cat perlbug.rep
Subject​: noise-free config.sh checksums
Message-Id​: <5.25.3_10346_1466885971@​buffy.jimc.earth>
To​: perlbug@​perl.org
From​: jim.cromie@​gmail.com
Reply-To​: jim.cromie@​gmail.com

This is a bug report for perl from jim.cromie@​gmail.com,
generated with the help of perlbug 1.40 running under perl 5.25.3.

---

[Please describe your issue here]

The header info in config.sh currently has a number of fields whose
values are unconstrained and essentially random​: ($cf_time, $cf_by,
$cf_email, $myuname).

# Package name : perl5
# Source directory : .
# Configuration time​: Fri Aug 28 21​:09​:08 MDT 2015
# Configured by : jimc
# Target system : linux groucho.jimc.earth
4.2.0-rc7-x2a-00125-gd0b89bd #278 smp sat a
ug 22 13​:35​:17 mdt 2015 x86_64 x86_64 x86_64 gnulinux

The presence of these cf_* fields means that `md5sum config.sh` output
is all noise; otherwize identical builds done at different times by
different users will have different checksums.

So this patch tweaks Configure (or rather 2 configure units - only 1
is needed, git add -i the desired chunk) to mark those problematic
lines with a leading '#​:', making them easy to exclude from a
grep|cksum calculation.

  cfx_md5=`grep -v '^#​:' config.sh | grep -vE '^cf_|^my' | md5sum`
  echo cfx_md5=\'$cf_md5\' >> config.sh

So this is a small step towards adding -k<checksum> into the perl
executable's name, and into its @​INC paths.

NOTES​:

1- tested by tweaking Configure, appending to config.sh, building, and
  verifying `./perl -Ilib -V​:cfx_md5​:`. Patched blindly into
  metaconfig units.

2- no >> config.sh actually done here, there might be a better way..

3- cfx_md5 could have a better name (subject to bikeshedding),
  md5 says nothing about what is included in the calculation.

4- multiple cfx_*, each with different subsets of `cat config.sh`,
  could define different "equivalent configs".

  For example​:
  cfx_cfargs=`grep config_args config.sh | md5sum`
  echo cfx_cfargs=\'$cfx_cfargs\' >> config.sh

  cfx_cfargs would neatly map the ~16 Test-Smoke configs to a small
  set of unique and eventually recognizable [0-9a-f]{3,5} key-fragments.

  cfx_md5 as given above would define comparable builds;
  Porting/bench.pl performance results from 2 platforms with
  identical keys should have similar results

[p5pRT]

From @jimc

0001-Config_sh.U-tweak-header-comments-to-mark-noisy-line.patch

From 1c78f2af96b2505b8402c724cdf81df21665e98d Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Sat, 25 Jun 2016 12:50:25 -0600
Subject: [PATCH] Config_sh.U: tweak header comments to mark noisy lines for
 checksum exclusion

The header info in config.sh currently has a number of fields whose
values are unconstrained and essentially random: ($cf_time, $cf_by,
$cf_email, $myuname).

 # Package name      : perl5
 # Source directory  : .
 # Configuration time: Fri Aug 28 21:09:08 MDT 2015
 # Configured by     : jimc
 # Target system     : linux groucho.jimc.earth 4.2.0-rc7-x2a-00125-gd0b89bd #278 smp sat aug 22 13:35:17 mdt 2015 x86_64 x86_64 x86_64 gnulinux

The presence of these cf_* fields means that `md5sum config.sh` output
is all noise; otherwize identical builds done at different times by
different users will have different checksums.

So this patch tweaks Configure (or rather 2 configure units - only 1
is needed, git add -i the desired chunk) to mark those problematic
lines with a leading '#:', making them easy to exclude from a
grep|cksum calculation.

   cfx_md5=`grep -v '^#:' config.sh | grep -vE '^cf_|^my' | md5sum`
   echo cfx_md5=\'$cf_md5\' >> config.sh

This yields a checksum value that reflects the given config_args, and
all the platform details its being built upon.  The checksum is
sensitive to the platform, despite dropping myarchname, via the
contents of cppsymbols, incpth, plibpth, gccversion, etc.

Further, with the cfx_md5 appended to config.sh as shown above, the
resulting %Config will have it, making it available for installation
tools to use.

      $ ./perl -Ilib -V:cfx_md5:
      cfx_md5='37e040a516936d31d0e049d95ad66b68 -'

So this is a small step towards adding -k<checksum> into the perl
executable's name, and into its @INC paths.

NOTES:

1- tested by tweaking Configure, appending to config.sh, building, and
   verifying `./perl -Ilib -V:cfx_md5:`.  Patched blindly into
   metaconfig units.

2- no >> config.sh actually done here, there might be a better way..

3- cfx_md5 could have a better name (subject to bikeshedding),
   md5 says nothing about what is included in the calculation.

4- multiple cfx_*, each with different subsets of `cat config.sh`,
   could define different "equivalent configs".

   For example:
   cfx_cfargs=`grep config_args config.sh | md5sum`
   echo cfx_cfargs=\'$cfx_cfargs\' >> config.sh

   cfx_cfargs would neatly map the ~16 Test-Smoke configs to a small
   set of unique and eventually recognizable [0-9a-f]{3,5} key-fragments.

   cfx_md5 as given above would define comparable builds;
   Porting/bench.pl performance results from 2 platforms with
   identical keys should have similar results
---
 U/modified/Config_sh.U | 10 +++++-----
 dist/U/Config_sh.U     | 10 +++++-----
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/U/modified/Config_sh.U b/U/modified/Config_sh.U
index 2bbcf1b..c9d884b 100644
--- a/U/modified/Config_sh.U
+++ b/U/modified/Config_sh.U
@@ -112,11 +112,11 @@ $startsh
 # instead choose to run each of the .SH files by yourself, or "Configure -S".
 #
 
-# Package name      : $package
-# Source directory  : $src
-# Configuration time: $cf_time
-# Configured by     : $cf_by
-# Target system     : $myuname
+#: Package name      : $package
+#: Source directory  : $src
+#: Configuration time: $cf_time
+#: Configured by     : $cf_by
+#: Target system     : $myuname
 
 EOT
 ?X: Command line options are saved by the Options.U unit in the
diff --git a/dist/U/Config_sh.U b/dist/U/Config_sh.U
index bb47b7b..a46b9f3 100644
--- a/dist/U/Config_sh.U
+++ b/dist/U/Config_sh.U
@@ -96,11 +96,11 @@ $startsh
 # instead choose to run each of the .SH files by yourself, or "Configure -S".
 #
 
-# Package name      : $package
-# Source directory  : $src
-# Configuration time: $cf_time
-# Configured by     : $cf_by
-# Target system     : $myuname
+#: Package name      : $package
+#: Source directory  : $src
+#: Configuration time: $cf_time
+#: Configured by     : $cf_by
+#: Target system     : $myuname
 
 EOT
 ?X: Command line options are saved by the Options.U unit in the
-- 
2.7.4

[p5pRT]

From @jimc

0001-Config_sh.U-tweak-header-comments-to-mark-noisy-line.patch

From 1c78f2af96b2505b8402c724cdf81df21665e98d Mon Sep 17 00:00:00 2001
From: Jim Cromie <jim.cromie@gmail.com>
Date: Sat, 25 Jun 2016 12:50:25 -0600
Subject: [PATCH] Config_sh.U: tweak header comments to mark noisy lines for
 checksum exclusion

The header info in config.sh currently has a number of fields whose
values are unconstrained and essentially random: ($cf_time, $cf_by,
$cf_email, $myuname).

 # Package name      : perl5
 # Source directory  : .
 # Configuration time: Fri Aug 28 21:09:08 MDT 2015
 # Configured by     : jimc
 # Target system     : linux groucho.jimc.earth 4.2.0-rc7-x2a-00125-gd0b89bd #278 smp sat aug 22 13:35:17 mdt 2015 x86_64 x86_64 x86_64 gnulinux

The presence of these cf_* fields means that `md5sum config.sh` output
is all noise; otherwize identical builds done at different times by
different users will have different checksums.

So this patch tweaks Configure (or rather 2 configure units - only 1
is needed, git add -i the desired chunk) to mark those problematic
lines with a leading '#:', making them easy to exclude from a
grep|cksum calculation.

   cfx_md5=`grep -v '^#:' config.sh | grep -vE '^cf_|^my' | md5sum`
   echo cfx_md5=\'$cf_md5\' >> config.sh

This yields a checksum value that reflects the given config_args, and
all the platform details its being built upon.  The checksum is
sensitive to the platform, despite dropping myarchname, via the
contents of cppsymbols, incpth, plibpth, gccversion, etc.

Further, with the cfx_md5 appended to config.sh as shown above, the
resulting %Config will have it, making it available for installation
tools to use.

      $ ./perl -Ilib -V:cfx_md5:
      cfx_md5='37e040a516936d31d0e049d95ad66b68 -'

So this is a small step towards adding -k<checksum> into the perl
executable's name, and into its @INC paths.

NOTES:

1- tested by tweaking Configure, appending to config.sh, building, and
   verifying `./perl -Ilib -V:cfx_md5:`.  Patched blindly into
   metaconfig units.

2- no >> config.sh actually done here, there might be a better way..

3- cfx_md5 could have a better name (subject to bikeshedding),
   md5 says nothing about what is included in the calculation.

4- multiple cfx_*, each with different subsets of `cat config.sh`,
   could define different "equivalent configs".

   For example:
   cfx_cfargs=`grep config_args config.sh | md5sum`
   echo cfx_cfargs=\'$cfx_cfargs\' >> config.sh

   cfx_cfargs would neatly map the ~16 Test-Smoke configs to a small
   set of unique and eventually recognizable [0-9a-f]{3,5} key-fragments.

   cfx_md5 as given above would define comparable builds;
   Porting/bench.pl performance results from 2 platforms with
   identical keys should have similar results
---
 U/modified/Config_sh.U | 10 +++++-----
 dist/U/Config_sh.U     | 10 +++++-----
 2 files changed, 10 insertions(+), 10 deletions(-)

diff --git a/U/modified/Config_sh.U b/U/modified/Config_sh.U
index 2bbcf1b..c9d884b 100644
--- a/U/modified/Config_sh.U
+++ b/U/modified/Config_sh.U
@@ -112,11 +112,11 @@ $startsh
 # instead choose to run each of the .SH files by yourself, or "Configure -S".
 #
 
-# Package name      : $package
-# Source directory  : $src
-# Configuration time: $cf_time
-# Configured by     : $cf_by
-# Target system     : $myuname
+#: Package name      : $package
+#: Source directory  : $src
+#: Configuration time: $cf_time
+#: Configured by     : $cf_by
+#: Target system     : $myuname
 
 EOT
 ?X: Command line options are saved by the Options.U unit in the
diff --git a/dist/U/Config_sh.U b/dist/U/Config_sh.U
index bb47b7b..a46b9f3 100644
--- a/dist/U/Config_sh.U
+++ b/dist/U/Config_sh.U
@@ -96,11 +96,11 @@ $startsh
 # instead choose to run each of the .SH files by yourself, or "Configure -S".
 #
 
-# Package name      : $package
-# Source directory  : $src
-# Configuration time: $cf_time
-# Configured by     : $cf_by
-# Target system     : $myuname
+#: Package name      : $package
+#: Source directory  : $src
+#: Configuration time: $cf_time
+#: Configured by     : $cf_by
+#: Target system     : $myuname
 
 EOT
 ?X: Command line options are saved by the Options.U unit in the
-- 
2.7.4

[p5pRT]

From @jkeenan

On Sat Jun 25 13​:57​:13 2016, yoduh wrote​:

Subject​: noise-free config.sh checksums
Message-Id​: <5.25.3_10346_1466885971@​buffy.jimc.earth>
To​: perlbug@​perl.org
From​: jim.cromie@​gmail.com
Reply-To​: jim.cromie@​gmail.com

This is a bug report for perl from jim.cromie@​gmail.com,
generated with the help of perlbug 1.40 running under perl 5.25.3.

-----------------------------------------------------------------
[Please describe your issue here]

The header info in config.sh currently has a number of fields whose
values are unconstrained and essentially random​: ($cf_time, $cf_by,
$cf_email, $myuname).

# Package name : perl5
# Source directory : .
# Configuration time​: Fri Aug 28 21​:09​:08 MDT 2015
# Configured by : jimc
# Target system : linux groucho.jimc.earth
4.2.0-rc7-x2a-00125-gd0b89bd #278 smp sat a
ug 22 13​:35​:17 mdt 2015 x86_64 x86_64 x86_64 gnulinux

The presence of these cf_* fields means that `md5sum config.sh` output
is all noise; otherwize identical builds done at different times by
different users will have different checksums.

So this patch tweaks Configure (or rather 2 configure units - only 1
is needed, git add -i the desired chunk) to mark those problematic
lines with a leading '#​:', making them easy to exclude from a
grep|cksum calculation.

cfx_md5=`grep -v '^#​:' config.sh | grep -vE '^cf_|^my' | md5sum`
echo cfx_md5=\'$cf_md5\' >> config.sh

So this is a small step towards adding -k<checksum> into the perl
executable's name, and into its @​INC paths.

NOTES​:

1- tested by tweaking Configure, appending to config.sh, building, and
verifying `./perl -Ilib -V​:cfx_md5​:`. Patched blindly into
metaconfig units.

2- no >> config.sh actually done here, there might be a better way..

3- cfx_md5 could have a better name (subject to bikeshedding),
md5 says nothing about what is included in the calculation.

4- multiple cfx_*, each with different subsets of `cat config.sh`,
could define different "equivalent configs".

For example​:
cfx_cfargs=`grep config_args config.sh | md5sum`
echo cfx_cfargs=\'$cfx_cfargs\' >> config.sh

cfx_cfargs would neatly map the ~16 Test-Smoke configs to a small
set of unique and eventually recognizable [0-9a-f]{3,5} key-fragments.

cfx_md5 as given above would define comparable builds;
Porting/bench.pl performance results from 2 platforms with
identical keys should have similar results

1. There are two attachments to this RT. However, they appear to be exactly the same -- correct?

2. The patches are not drawn against the Perl 5 core distribution, so my hunch is that they're drawn against metaconfig. So they need to be evaluated by people with that system; bcc-ing some likely experts.

3. You wrote, "So this is a small step towards adding -k<checksum> into the perl executable's name, and into its @​INC paths." Is that a goal that we (P5P) have set for ourselves? If not, should we? Discuss.

Thank you very much.
Jim Keenan

[Please do not change anything below this line]
-----------------------------------------------------------------
---
Flags​:
category=core
severity=low
---
Site configuration information for perl 5.25.3​:

Configured by jimc at Sat Jun 25 06​:51​:35 MDT 2016.

Summary of my perl5 (revision 5 version 25 subversion 3)
configuration​:
Local Commit​: 34091a802e8ba014b1260cb5a216c48e0282fa6f
Ancestor​: 3957d52baeb5e1bbf9b604a39b98e29377008675
Platform​:
osname=linux
osvers=4.5.6-300.fc24.x86_64
archname=x86_64-linux
uname='linux buffy.jimc.earth 4.5.6-300.fc24.x86_64 #1 smp wed jun
1
21​:29​:58 utc 2016 x86_64 x86_64 x86_64 gnulinux '
config_args='-des -DDEBUGGING -Dusedevel -Accflags=-DPERL_MEM_LOG
-DPERL_TRACE_OPS'
hint=recommended
useposix=true
d_sigaction=define
useithreads=undef
usemultiplicity=undef
use64bitint=define
use64bitall=define
uselongdouble=undef
usemymalloc=n
bincompat5005=undef
Compiler​:
cc='cc'
ccflags ='-DPERL_MEM_LOG -DPERL_TRACE_OPS -fwrapv -DDEBUGGING
-fno-strict-aliasing -pipe -fstack-protector-strong
-I/usr/local/include
-D_LARGEFILE_SOURCE -D_FILE_OFFSET_BITS=64'
optimize='-O2 -g'
cppflags='-DPERL_MEM_LOG -DPERL_TRACE_OPS -fwrapv -DDEBUGGING
-fno-strict-aliasing -pipe -fstack-protector-strong
-I/usr/local/include'
ccversion=''
gccversion='6.1.1 20160510 (Red Hat 6.1.1-2)'
gccosandvers=''
intsize=4
longsize=8
ptrsize=8
doublesize=8
byteorder=12345678
doublekind=3
d_longlong=define
longlongsize=8
d_longdbl=define
longdblsize=16
longdblkind=3
ivtype='long'
ivsize=8
nvtype='double'
nvsize=8
Off_t='off_t'
lseeksize=8
alignbytes=8
prototype=define
Linker and Libraries​:
ld='cc'
ldflags =' -fstack-protector-strong -L/usr/local/lib'
libpth=/usr/local/lib /usr/lib /lib/../lib64 /usr/lib/../lib64
/lib
/lib64 /usr/lib64 /usr/local/lib64
libs=-lpthread -lnsl -lgdbm -ldb -ldl -lm -lcrypt -lutil -lc
-lgdbm_compat
perllibs=-lpthread -lnsl -ldl -lm -lcrypt -lutil -lc
libc=libc-2.23.so
so=so
useshrplib=false
libperl=libperl.a
gnulibc_version='2.23'
Dynamic Linking​:
dlsrc=dl_dlopen.xs
dlext=so
d_dlsymun=undef
ccdlflags='-Wl,-E'
cccdlflags='-fPIC'
lddlflags='-shared -O2 -g -L/usr/local/lib -fstack-protector-
strong'

Locally applied patches​:
28d629a
e10f6b3
8183f68
d7d0a5d
1984967
4368ade
76975f2
e40834e
31b1998
19d6c38
5068f26
b8b4155
ab462c7
9a10913
319b236
a95b3d6
8c13e94
2163b70
2640dfa
7e69463
de1003b
f3dd6ba
8a035c8
730ddfe
ee59ac1
b011e69
aec451e
6f30c26
255a3e7
fa44d96
86ee672
9baa246
fff2d93
2ed1f60
e34630b
e42cacf
2f7cab8
74c0b71
1b1e331
5290b67
e52682c
6d46ab2
45cc06e
30914c1
8a355c1
d9262b3
3cfebac
bb9879d
ca463a0
420b564
1a8aefe
10d36cf
6d08d01
01f58bc
1bbb094
e7fffa3
6bbd724
5f58a6b
a21b01b
9a21f3b
03ea422
4a9f92e
9e10bfd
4f8325b
fac0c35
656a5b9
be2c0c6
c02894f
4b8803f
35f11c1
dc1a9c2
557e6e6
c800d8b
2c5484a
2bd5e57
0302547
4170737
b74f9bc
3a985a4
8fc1253
0f51bd1
51f69a2
8df928d
fd2f778
b82bf1a
fe427a6
61463a3
b3632c7
acab242
60108b4
a27615d
1656665
4ee010a
534dad4
393aa92
ba99dae
bb0f664
d35fca5
8fe07b3
f38527b
23695c0
83a177d
e71f25b
f54530a
6a810bd
cf6c814
e5000e0
1bda7a7
da7cf1c
5fb4138
9cdec13
614273a
a52f2cc
5bad2b3
09cfff4
add9356
a2c3b2f
55701e3
6b3eaab
fcd1306
2fc8e8b
b25b06c
b451492
ec35cd4
c60f344
f914a2b
19fc296
dc09fdd
26acb4d
1be7e5f
556343f
2d825fd
52de5f3
5ff52e3
da8a449
1f207a9
3f1866a
3d9637d
fb24590
b8070b0
956f01a
5d32d26
4e49963
bf1007b
adec5bb
bf47000
396ce25
1c00b88
f15d058
1ec2b02
2e6807b
01602aa
8e5993c
59a14f3
60a26c7
7f1bd06
073051a
c7cd1ed
e8164ee
2f7a15b
7ede3c4
9d293dd
0533ae6
bfea061
0f5c582
8255316
94b9cb5
90bb05e
fd02503
05a6ec7
965f951
fdfa330
9cea1b1
a2b4240
a3b4b76
bd18aea
c04bead
decf70b
9a0b3f3
b40d1aa
1cb852d
a26223c
9ec9395
95ec88f
83c15bc
7a928d9
fe43a9c
acfbe60
f861ba6
dc26b61
69e7f50
38c8d7b
0927ade
0057672
94f9945
c349280
68aa512
72e1194
24963b0
05465a2
e57ea7c
5db4618
16a77b2
b250cf0
ea319c8
6af6e59
63dcbd3
9e17953
7832ad8
d674449
4de751a
9cd3bbf
69ab4fe
fef6692
482e441
08f800f
f8591e0
970ebd6
1d6c37f
38fe8a0
cb5e83e
9e08bfd
001761d
7d376cf
463bbb8
f7a1e8f
a7efcf7
5b145eb
3d809c3
63c81c3
efdbe37
1e2ea6f
5ad9992
a061ab0
cc5f9b8
65985bd
738155d
60e04ba
4be1619
8f7d85a
32e7f21
06c4bad
c2c3605
db62956
a55ca2c
47011d9
89e2fe5
5ea3460
29e10d3
d88ca56
8810188
8147793
73665bc
f7ce57d
01bbc29
bea284c
cd64240
09783a0
5cb51e4
118a40c
76734a3
28383d1
c534415
4970644
397c43d
09eb1f3
1381bea
adff8e6
5f602b3
f2b9631
4cb26c5
d7244c9
8687a6e
31f7d6b
f68c540
ad01aea
f17bc91
4e615ab
00bf60c
165a1c5
59c018b
6696cfa
4ebeff1
3c5f993
c664130
79f120c
ff52fcf
a4a439f
78d5797
2fcc0ca
55e5378
58eebef
6ddd902
17f4103
81547f2
227883e
b9f119b
cbef69c
a73158a
1ee983f
27cdc72
2c0879e
c389e68
e67bc19
c29dfc6
e9baa58
c97f388
1f44a80
c429f8e
997990f
d54f4ed
18d04e7
fbe0543
58818a6
4694301
4911bc4
bdc905d
6830146
d2bccf1
ad1bab9
3ecb55d
bd4dc88
bc900e4
ef55c67
198aaf3
e7127e2
cc93473
37808b0
21866d1
f71079d
9c88bb5
e2733f9
59f30b2
4d092e9
404b28f
bd9daf5
33d95a6
0a44e30
6667f48
1e83449
1ab3373
3b17061
f3fccad
ebb13b5
aad46ae
af4a745
e6404dc
078428f
98b8e36
514e62e
c6a6e1c
e17bc05
2cd7944
6432086
2104c69
1ba1157
ee072c8
8c47236
7eec73e
0bf54b1
88bd750
596f771
5e21a9a
016af03
5a0de58
7720b61
e4fc708
1a3e972
79409ac
7351909
33a1032
31b6f23
81b22c1
706d6f2
222c4b0
5347602
f871eec
b1d776c
ad96436
a1e5c56
756a1fc
43faffb
971f6fb
4ef6d38
2429375
a9eceb2
955a736
d54523c
c385646
1a961f9
32dfbb3
44b1835
857716c
60858fe
8a094fe
3f6b66c
f328551
3735683
0de6c76
3bcfc7b
9ed2d9d
e23397c
0bac45c
8dd2ecb
8fe4bbc
69b63ee
9f99f3e
a1b6998
8165798
b20d3b8
6405d2e
a139980
8e84dec
e171168
51e3e8c
ec5bd22
62ba638
12cb3c0
2901a58
f72f2c0
3b58a01
d60db39
29002db
d097119
18940b1
c04c2bf
2d41a26
ba3530a
683433b
bf89478
d52d06a
3235657
93e53d6
e388eaf
90a4dab
7984aa2
8c3f6b0
d3cf57b
d6e0ab9
e340d4b
3864116
5c427e6
228bfab
a0e0fa2
c338e23
143048c
7674498
00ac85b
bf49eae
94e22bd
17529fa
4827ac7
e6da2a9
55b6481
c0c2b30
e7acdfe
21a5c8d
c92b26e
4e058f4
b6c0faa
6295dc1
b0e2440
f2bfbac
a49fc7b
13e1fc6
6c50b67
8bf4c40
3dfcef7
8175977
8bbcf42
9d0d763
1b3df0e
d3ac935
10f94ef
59fe598
9e5cda6
12e0223

---
@​INC for perl 5.25.3​:
lib
/usr/local/lib/perl5/site_perl/5.25.3/x86_64-linux
/usr/local/lib/perl5/site_perl/5.25.3
/usr/local/lib/perl5/5.25.3/x86_64-linux
/usr/local/lib/perl5/5.25.3
/usr/local/lib/perl5/site_perl
.

---
Environment for perl 5.25.3​:
HOME=/home/jimc
LANG=en_US.UTF-8
LANGUAGE (unset)
LD_LIBRARY_PATH (unset)
LOGDIR (unset)

PATH=/usr/lib64/qt-
3.3/bin​:/usr/lib64/ccache​:/usr/local/bin​:/usr/local/sbin​:/usr/bin​:/usr/sbin​:/home/jimc/.local/bin​:/home/jimc/bin
PERL_BADLANG (unset)
SHELL=/bin/bash

--
James E Keenan (jkeenan@​cpan.org)

[p5pRT]

The RT System itself - Status changed from 'new' to 'open'

[p5pRT]

From @jimc

1. There are two attachments to this RT. However, they appear to be
exactly the same -- correct?

glad theyre exact - they should be -
I didnt see the 1st succeed. I probly didnt wait long enough.

2. The patches are not drawn against the Perl 5 core distribution, so my
hunch is that they're drawn against metaconfig. So they need to be
evaluated by people with that system; bcc-ing some likely experts.

true - I could have patched Configure
but that leaves more work for Tux or someone else busy.

3. You wrote, "So this is a small step towards adding -k<checksum> into
the perl executable's name, and into its @​INC paths." Is that a goal that
we (P5P) have set for ourselves? If not, should we? Discuss.

I almost removed that bit, to defer controversy.

recently, these were added to make it easier to find differences
between 2 given builds; now diff Conf-a Conf-b
will show line by line whats different.

8dd2ecb perl -V​: make configuration one per line
0bac45c perl -V​: make 'Compile-time options' one per line

the opposite is also true, it would be nice to know when 2 configs are
identical;
with the time, date, builder-name, uname -a built into config
2 otherwize identical builds, done seconds apart,
will fail to be checksum equivalent,
diff -q a b > /dev/null will return 1 (not 0)
so its not trivial to check via script

this patch is the smallest step I could take,
I didnt want to actually remove the info contained here

#= Package name : perl5
#= Source directory : .
#= Configuration time​: Sat Jun 25 06​:51​:35 MDT 2016
#= Configured by : jimc
#= Target system : linux buffy.jimc.earth 4.5.6-300.fc24.x86_64 #1 smp
wed j
un 1 21​:29​:58 utc 2016 x86_64 x86_64 x86_64 gnulinux

so I chose to mark it such that its easy to exclude from a checksum
computation.
if that checksum is done like so​:

  cfx_md5=`grep -v '^#=' config.sh | grep -vE '^cf_|^my' | md5sum`
  echo cfx_md5=\'$cf_md5\' >> config.sh

then cfx_md5 will change only rarely for a given config_args value
on a single box, probably only changing when CC or system libraries are
updated

supposing that cfx_md5 is unchanging for 2 months on a box,
that means that Porting/bench.pl --write results are comparable
for performance regressions (or progressions) over that period (on that
box).

it might also be true that 2 '-des -Usedevel' builds of blead on 2
fedora-24 boxes
will have identical cfx_md5. if those 2 boxes have i3 and i7 cpus, the
results
are not comparable - but `cksum /proc/cpuinfo` could solve that,
and results from your box and mine might then be comparable.

so if --write results can be grouped by one or more of
-g<commit> -k<conf-md5> -m<mem-hash> -p<cpu-hash>

then we can compute std-deviations on sets of results
defined by various constellations of these values,
the larger sets should have larger std-devs

thats all pretty distant and speculative,
and it sounds a bit underwhelming as expressed above,
but then Ive only tweaked 5 line of 'comments'

-jimc

Thank you very much.
Jim Keenan