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configure: consistent command -v usage

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When the shell builtin `command -v` operates normally, it either
prints the path of the arg given to it and returns zero -- or it
returns nonzero and prints nothing.
In abnormal situations something might be printed to stderr and
in that case we want to know about it; therefore the used
command -v stderr redirections to /dev/null have been removed.

The `hash` (builtin) command in ksh returns zero even the arg
given to is is not found in path. For that and for consistency
the one appearance of it has been converted to `command -v`.
This commit is contained in:
Tomi Ollila 2015-02-18 16:54:01 +02:00 committed by David Bremner
parent 1722ea2c95
commit 91ef2ae524
1 changed files with 3 additions and 3 deletions
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6
configure vendored
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@ -378,7 +378,7 @@ printf "Checking for python... "
have_python=0
for name in python python2 python3; do
if command -v $name > /dev/null 2>&1; then
if command -v $name > /dev/null; then
have_python=1
python=$name
printf "Yes ($name).\n"
@ -435,7 +435,7 @@ else
fi
printf "Checking if doxygen is available... "
if command -v doxygen > /dev/null 2>&1; then
if command -v doxygen > /dev/null; then
printf "Yes.\n"
have_doxygen=1
else
@ -444,7 +444,7 @@ else
fi
printf "Checking if sphinx is available and supports nroff output... "
if hash sphinx-build > /dev/null 2>&1 && ${python} -m sphinx.writers.manpage > /dev/null 2>&1 ; then
if command -v sphinx-build > /dev/null && ${python} -m sphinx.writers.manpage > /dev/null 2>&1 ; then
printf "Yes.\n"
have_sphinx=1
else