@@ -1044,11 +1044,24 @@ if ! $python -c 'import sys; sys.exit(sys.version_info < (3,6))'; then
"Use --python=/path/to/python to specify a supported Python."
fi
-# Suppress writing compiled files
-python="$python -B"
+# Resolve PATH + suppress writing compiled files
+python="$(command -v "$python") -B"
+
+has_meson() {
+ local python_dir=$(dirname "$python")
+ # PEP405: pyvenv.cfg is either adjacent to the Python executable
+ # or one directory above
+ if test -f $python_dir/pyvenv.cfg || test -f $python_dir/../pyvenv.cfg; then
+ # Ensure that Meson and Python come from the same virtual environment
+ test -x "$python_dir/meson" &&
+ test "$(command -v meson)" -ef "$python_dir/meson"
+ else
+ has meson
+ fi
+}
if test -z "$meson"; then
- if test "$explicit_python" = no && has meson && version_ge "$(meson --version)" 0.61.5; then
+ if test "$explicit_python" = no && has_meson && version_ge "$(meson --version)" 0.61.5; then
meson=meson
elif test "$git_submodules_action" != 'ignore' ; then
meson=git
If neither --python nor --meson are specified, Meson's generated build.ninja will invoke Python script using the interpreter *that Meson itself is running under*; not the one identified by configure. This is only an issue if Meson's Python interpreter is not "the first one in the path", which is the one that is used if --python is not specified. A common case where this happen is when the "python3" binary comes from a virtual environment but Meson is not installed (with pip) in the virtual environment. In this case (presumably) whoever set up the venv wanted to use the venv's Python interpreter to build QEMU, while Meson might use a different one, for example an enterprise distro's older runtime. So, detect whether a virtual environment is setup, and if the virtual environment does not have Meson, use the meson submodule. Meson will then run under the virtual environment's Python interpreter. Reported-by: John Snow <jsnow@redhat.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com> --- configure | 19 ++++++++++++++++--- 1 file changed, 16 insertions(+), 3 deletions(-)