Do not export private symbols in the shared object.

2 files changed, 7 insertions, 2 deletions

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: *;
+};