[Windows/MinGW] Only export extension init symbol

When building for Windows using MinGW GCC we need to apply the same
workaround we use on Linux to only export the necessary symbols so we
can safely statically link libstdc++

1 files changed, 6 insertions, 0 deletions

diff --git a/misc/gcc/symbols-extension.map b/misc/gcc/symbols-extension.map
new file mode 100644
index 0000000..5af224e
--- /dev/null
+++ b/misc/gcc/symbols-extension.map
@@ -0,0 +1,6 @@
+{
+    global:
+        webrtc_extension_init;
+    local:
+        *;
+};