bpo-36722: Debug build loads libraries built in release mode (GH-12952)

In debug build, import now also looks for C extensions compiled in
release mode and for C extensions compiled in the stable ABI.

1 files changed, 12 insertions, 0 deletions

diff --git a/configure b/configure
index b02d17c..b2775cf 100755
--- a/configure
+++ b/configure
@@ -632,6 +632,7 @@ THREADHEADERS
 LIBPL
 PY_ENABLE_SHARED
 EXT_SUFFIX
+ALT_SOABI
 SOABI
 LIBC
 LIBM
@@ -15127,6 +15128,17 @@ SOABI='cpython-'`echo $VERSION | tr -d .`${ABIFLAGS}${PLATFORM_TRIPLET:+-$PLATFO
 { $as_echo "$as_me:${as_lineno-$LINENO}: result: $SOABI" >&5
 $as_echo "$SOABI" >&6; }
 
+if test "$Py_DEBUG" = 'true'; then
+  # Similar to SOABI but remove "d" flag from ABIFLAGS
+
+  ALT_SOABI='cpython-'`echo $VERSION | tr -d .``echo $ABIFLAGS | tr -d d`${PLATFORM_TRIPLET:+-$PLATFORM_TRIPLET}
+
+cat >>confdefs.h <<_ACEOF
+#define ALT_SOABI "${ALT_SOABI}"
+_ACEOF
+
+fi
+
 
 case $ac_sys_system in
     Linux*|GNU*|Darwin|VxWorks)