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opal_functions.m4: add comment

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Add commit about why it's ok to use $srcdir here
(vs. $OMPI_TOP_SRCDIR).

Signed-off-by: Jeff Squyres <jsquyres@cisco.com>
This commit is contained in:
Jeff Squyres 2020-11-05 08:32:39 -08:00
parent 91a5af83cd
commit a6a0d511f9
1 changed files with 6 additions and 0 deletions
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6
config/opal_functions.m4
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@ -96,6 +96,12 @@ EOF
OPAL_CONFIGURE_USER="${USER:-`whoami`}"
OPAL_CONFIGURE_HOST="${HOSTNAME:-`(hostname || uname -n) 2> /dev/null | sed 1q`}"
# Note: it's ok to use $srcdir here because this macro is called at
# the very beginning of configure.ac:
#
# a) before $OMPI_TOP_SRCDIR is set, and
# b) from the top-level build directory (i.e., so $srcdir actually
# points to the top source directory)
OPAL_CONFIGURE_DATE="`$srcdir/config/getdate.sh`"
OPAL_LIBNL_SANITY_INIT