NetBSD / OpenBSD Support (#243)

Thanks.
This first PR is very clean :tada:

diff --git a/Makefile b/Makefile
index 4d192ae4ba691e0c7502d36f7c6823bed54420e1..0bfeee52cf3833ae6fb03aba5dd7c292eb8236e4 100644 (file)
--- a/Makefile
+++ b/Makefile
@@ -30,7 +30,12 @@ CFLAGS += -DDEBUG_STACK
 endif
 
 ifneq (${BUILD_ON_WINDOWS}, 1)
-LDFLAGS += -ldl -lpthread
+LDFLAGS += -lpthread
+ifeq ($(uname -s), NetBSD)
+else ifeq ($(uname -s), OpenBSD)
+else
+LDFLAGS += -ldl
+endif
 endif
 
 ifeq (${USE_HELGRIND}, 1)