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Autoconf: Find Python, even if PYTHON is empty #397

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Merged
adcroft merged 1 commit into from
Jul 7, 2023
Merged

Autoconf: Find Python, even if PYTHON is empty #397

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1 change: 1 addition & 0 deletions ac/Makefile.in
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Original file line number Diff line number Diff line change
Expand Up @@ -56,3 +56,4 @@ ac-clean: distclean
rm -f @srcdir@/ac/aclocal.m4
rm -rf @srcdir@/ac/autom4te.cache
rm -f @srcdir@/ac/configure
rm -f @srcdir@/ac/configure~
5 changes: 5 additions & 0 deletions ac/configure.ac
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Expand Up @@ -238,8 +238,13 @@ AC_COMPILE_IFELSE(

# Python interpreter test

# Declare the Python interpreter variable
AC_ARG_VAR([PYTHON], [Python interpreter command])

# If PYTHON is set to an empty string, then unset it
AS_VAR_IF([PYTHON], [], [AS_UNSET([PYTHON])], [])

# Now attempt to find a Python interpreter if PYTHON is unset
AS_VAR_SET_IF([PYTHON], [
AC_PATH_PROGS([PYTHON], ["$PYTHON"], [none])
], [
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