Commit3d498c6

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configure: Update python search order

Some systems don't ship with "python" by default anymore, only"python3" or "python2" or some combination, so include those in theconfigure search.Discussion:https://www.postgresql.org/message-id/flat/1457.1543184081%40sss.pgh.pa.us#c9cc1199338fd6a257589c6dcea6cf8d

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+11

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+11

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Lines changed: 8 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -8,8 +8,15 @@`
`8`	`8`	`# ----------------`
`9`	`9`	`# Look for Python and set the output variable 'PYTHON' if found,`
`10`	`10`	`# fail otherwise.`
	`11`	`+#`
	`12`	`+# As the Python 3 transition happens and PEP 394 isn't updated, we`
	`13`	`+# need to cater to systems that don't have unversioned "python" by`
	`14`	`+# default. Some systems ship with "python3" by default and perhaps`
	`15`	`+# have "python" in an optional package. Some systems only have`
	`16`	`+# "python2" and "python3", in which case it's reasonable to prefer the`
	`17`	`+# newer version.`
`11`	`18`	`AC_DEFUN([PGAC_PATH_PYTHON],`
`12`		`-[PGAC_PATH_PROGS(PYTHON, python)`
	`19`	`+[PGAC_PATH_PROGS(PYTHON,[python python3 python2])`
`13`	`20`	`if test x"$PYTHON" = x""; then`
`14`	`21`	`AC_MSG_ERROR([Python not found])`
`15`	`22`	`fi`

Lines changed: 1 addition & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -9504,7 +9504,7 @@ fi`
`9504`	`9504`
`9505`	`9505`	`if test "$with_python" = yes; then`
`9506`	`9506`	`if test -z "$PYTHON"; then`
`9507`		`- for ac_prog in python`
	`9507`	`+ for ac_prog in python python3 python2`
`9508`	`9508`	`do`
`9509`	`9509`	`# Extract the first word of "$ac_prog", so it can be a program name with args.`
`9510`	`9510`	`set dummy $ac_prog; ac_word=$2`

Lines changed: 2 additions & 1 deletion

Original file line number	Diff line number	Diff line change
`@@ -1517,7 +1517,8 @@ su - postgres`
`1517`	`1517`	`implicitly chosen) determines which variant of the PL/Python`
`1518`	`1518`	`language becomes available. See`
`1519`	`1519`	`<xref linkend="plpython-python23"/>`
`1520`		`- for more information. The default is <command>python</command>.`
	`1520`	`+ for more information. If this is not set, the following are probed`
	`1521`	`+ in this order: <literal>python python3 python2</literal>.`
`1521`	`1522`	`</para>`
`1522`	`1523`	`</listitem>`
`1523`	`1524`	`</varlistentry>`

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