Link dynamically to libgit2

With libgit2 v0.22 released, we can expect its API and ABI to remain
stable when installed on the system.

Linking dynamically allows us to use the go tool alone to build and
install the package.

1 files changed, 1 insertions, 0 deletions

diff --git a/git.go b/git.go
index 8e78710..9496d2d 100644
--- a/git.go
+++ b/git.go
@@ -3,6 +3,7 @@ package git
 /*
 #include <git2.h>
 #include <git2/sys/openssl.h>
+#cgo pkg-config: libgit2
 */
 import "C"
 import (