build: try calling python-config with --embed

[babeltrace.git] / configure.ac

diff --git a/configure.ac b/configure.ac
index b1edd9ee85421c43e40774f01590bdbcf17747e6..7cbe3ba72220b691074dfd5a2a5d228cc6a1dbd0 100644 (file)
--- a/configure.ac
+++ b/configure.ac
@@ -510,7 +510,10 @@ AM_PATH_PYTHON([3.0], [
 
     AS_IF([test -z "$PYTHON_LDFLAGS"], [
       AC_MSG_CHECKING([Python library flags])
-      PYTHON_LDFLAGS=`$PYTHON_CONFIG --ldflags`
+      # Python 3.8+ requires that we pass --embed to get the -lpython3.x flag.
+      AS_IF([! PYTHON_LDFLAGS=`$PYTHON_CONFIG --ldflags --embed`], [
+        PYTHON_LDFLAGS=`$PYTHON_CONFIG --ldflags`
+      ])
       AC_MSG_RESULT([$PYTHON_LDFLAGS])
     ])
   ])