libbtrfsutil: use pkg-config detection for the right Python version

The user may have specified a different version of Python than the
python3 from their $PATH (e.g., with PYTHON=/usr/bin/python3.6).

Signed-off-by: Omar Sandoval <osandov@fb.com>
Signed-off-by: David Sterba <dsterba@suse.com>

diff --git a/configure.ac b/configure.ac
index dcc98ea..af13a95 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -219,7 +219,7 @@ AC_ARG_ENABLE([python],
 
 if test "x$enable_python" = xyes; then
        AM_PATH_PYTHON([3.4])
-       PKG_CHECK_MODULES(PYTHON, [python3])
+       PKG_CHECK_MODULES(PYTHON, [python-${PYTHON_VERSION}])
 fi
 
 AS_IF([test "x$enable_python" = xyes], [PYTHON_BINDINGS=1], [PYTHON_BINDINGS=0])