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build: fix inability to detect correct python command in configure

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The "which" utility is not guaranteed to be installed, and if it is, its
behavior is not portable.

Conversely, the "command -v" shell builtin is required to exist in all
POSIX 2008 compliant shells, and is thus guaranteed to work everywhere.

Examples of open-source shells likely to be installed as /bin/sh on
Linux, which implement the 12-year-old standard: ash, bash, busybox,
dash, ksh, mksh and zsh.

Signed-off-by: Eli Schwartz <eschwartz@archlinux.org>

PR-URL: https://github.com/nodejs/node/pull/32925
Reviewed-By: Richard Lau <riclau@uk.ibm.com>
Reviewed-By: Matheus Marchini <mat@mmarchini.me>
Reviewed-By: Ruben Bridgewater <ruben@bridgewater.de>
This commit is contained in:
Eli Schwartz 2020-04-19 03:23:58 -04:00 • committed by Ruben Bridgewater
parent 5e4c025567
commit b21556d28b
1 changed files with 5 additions and 5 deletions
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10
configure vendored
View file

@ -5,11 +5,11 @@
# as is the fact that the ] goes on a new line.
_=[ 'exec' '/bin/sh' '-c' '''
test ${FORCE_PYTHON2} && exec python2 "$0" "$@" # workaround for gclient
which python3.8 >/dev/null && exec python3.8 "$0" "$@"
which python3.7 >/dev/null && exec python3.7 "$0" "$@"
which python3.6 >/dev/null && exec python3.6 "$0" "$@"
which python3.5 >/dev/null && exec python3.5 "$0" "$@"
which python2.7 >/dev/null && exec python2.7 "$0" "$@"
command -v python3.8 >/dev/null && exec python3.8 "$0" "$@"
command -v python3.7 >/dev/null && exec python3.7 "$0" "$@"
command -v python3.6 >/dev/null && exec python3.6 "$0" "$@"
command -v python3.5 >/dev/null && exec python3.5 "$0" "$@"
command -v python2.7 >/dev/null && exec python2.7 "$0" "$@"
exec python "$0" "$@"
''' "$0" "$@"
]