From 0c2415fba915161f8d08a95f67596c39122d77f5 Mon Sep 17 00:00:00 2001
From: Anton Khirnov <anton@khirnov.net>
Date: Wed, 1 Aug 2018 20:13:58 +0200
Subject: Do not export private symbols in the shared object.

---
 Makefile  | 5 +++--
 libmg2d.v | 4 ++++
 2 files changed, 7 insertions(+), 2 deletions(-)
 create mode 100644 libmg2d.v

diff --git a/Makefile b/Makefile
index 9cc3d61..e1079dc 100644
--- a/Makefile
+++ b/Makefile
@@ -1,5 +1,6 @@
 CFLAGS = -std=c99 -D_XOPEN_SOURCE=700 -fPIC -g
-LDFLAGS = -shared -lm
+LDFLAGS = -Wl,--version-script=libmg2d.v -shared -lm
+CC = cc
 
 TARGET = libmg2d.so
 
@@ -12,7 +13,7 @@ OBJECTS =               \
 all: $(TARGET)
 
 $(TARGET): $(OBJECTS)
-	ld ${LDFLAGS} -o $@ $(OBJECTS)
+	$(CC) ${LDFLAGS} -o $@ $(OBJECTS)
 
 clean:
 	-rm $(OBJECTS) $(TARGET)
diff --git a/libmg2d.v b/libmg2d.v
new file mode 100644
index 0000000..50ee8ca
--- /dev/null
+++ b/libmg2d.v
@@ -0,0 +1,4 @@
+LIBMG2D_0 {
+    global: mg2d_*;
+    local: *;
+};
-- 
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