Marge Bot pushed to branch master at Glasgow Haskell Compiler / GHC
Commits:
91f4faaa by Cheng Shao at 2025-08-20T11:53:43-04:00
configure: check python3 version and require minimal 3.7
Since !9515, the testsuite driver requires python3 version to be at
least 3.7, though this has never been checked by configure logic. This
patch implements the version check. Fixes #23234.
Co-authored-by: Codex
- - - - -
1 changed file:
- m4/find_python.m4
Changes:
=====================================
m4/find_python.m4
=====================================
@@ -1,10 +1,43 @@
# FIND_PYTHON
# -----------
-# Find the version of `python` to use (for the testsuite driver)
+# Find a usable Python interpreter and enforce a minimum version.
+# Exports:
+# - PYTHON: Path to the interpreter for build/test scripts
+# - PythonCmd: Canonicalised path used by Hadrian and config files
+# - PythonVersion: Detected Python version (X.Y.Z)
#
AC_DEFUN([FIND_PYTHON],[
dnl Prefer the mingw64 distribution on Windows due to #17483.
AC_PATH_PROG([PYTHON], [python3], [], [/mingw64/bin $PATH])
+
+ dnl Fall back to "python" if python3 isn’t found (version checked below)
+ AS_IF([test -z "$PYTHON"], [
+ AC_PATH_PROG([PYTHON], [python], [], [/mingw64/bin $PATH])
+ ])
+
+ dnl If still not found, hard error: we require Python >= 3.7
+ AS_IF([test -z "$PYTHON"], [
+ AC_MSG_ERROR([Python 3.7 or later is required but no python interpreter was found. Please install Python >= 3.7 and re-run configure.])
+ ])
+
+ dnl Query the version string (X.Y.Z) of the selected interpreter
+ AC_CACHE_CHECK([for version of python], [fp_cv_python_version], [
+ changequote(, )dnl
+ fp_cv_python_version=`"$PYTHON" -c "import sys; sys.stdout.write('%d.%d.%d' % sys.version_info[:3])" 2>/dev/null`
+ changequote([, ])dnl
+ ])
+ PythonVersion=$fp_cv_python_version
+ AC_SUBST([PythonVersion])
+
+ dnl Enforce minimum version 3.7.0
+ AS_IF([test -z "$PythonVersion"], [
+ AC_MSG_ERROR([Failed to determine Python version for $PYTHON])
+ ])
+ FP_COMPARE_VERSIONS([$PythonVersion], [-lt], [3.7.0], [
+ AC_MSG_ERROR([Python 3.7 or later is required, but $PYTHON reports $PythonVersion])
+ ])
+
+ dnl Canonicalise path for Windows
if test "$HostOS" = "mingw32"
then
PythonCmd=$(cygpath -m "$PYTHON")
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/91f4faaab4b84676e42a6cef2c54f110...
--
View it on GitLab: https://gitlab.haskell.org/ghc/ghc/-/commit/91f4faaab4b84676e42a6cef2c54f110...
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