aboutsummaryrefslogtreecommitdiff
path: root/butl/export
diff options
context:
space:
mode:
authorBoris Kolpackov <boris@codesynthesis.com>2016-07-25 08:56:48 +0200
committerBoris Kolpackov <boris@codesynthesis.com>2016-07-25 08:56:48 +0200
commit098559ca3552ebd8f80a6d28254f4fa58913b751 (patch)
tree1eb6f65b492d3217a380a909f6810a5f3e00cc37 /butl/export
parent6c8e3f09c185d7fa4664ccd9e5c4f623a17b84cc (diff)
Add DLL export/import support
Diffstat (limited to 'butl/export')
-rw-r--r--butl/export37
1 files changed, 37 insertions, 0 deletions
diff --git a/butl/export b/butl/export
new file mode 100644
index 0000000..2b5a5ac
--- /dev/null
+++ b/butl/export
@@ -0,0 +1,37 @@
+// file : butl/export -*- C++ -*-
+// copyright : Copyright (c) 2014-2016 Code Synthesis Ltd
+// license : MIT; see accompanying LICENSE file
+
+#ifndef BUTL_EXPORT
+#define BUTL_EXPORT
+
+// Normally we don't export class templates (but do complete specializations),
+// inline functions, and classes without any member functions. But in the end
+// it's all trial and error to figure out what VC needs exported.
+
+#if defined(LIBBUTL_STATIC) // Using static.
+# define LIBBUTL_EXPORT
+#elif defined(LIBBUTL_STATIC_BUILD) // Building static.
+# define LIBBUTL_EXPORT
+#elif defined(LIBBUTL_SHARED) // Using shared.
+# ifdef _WIN32
+# define LIBBUTL_EXPORT __declspec(dllimport)
+# else
+# define LIBBUTL_EXPORT
+# endif
+#elif defined(LIBBUTL_SHARED_BUILD) // Building shared.
+# ifdef _WIN32
+# define LIBBUTL_EXPORT __declspec(dllexport)
+# else
+# define LIBBUTL_EXPORT
+# endif
+#else
+// If none of the above macros are defined, then we assume we are being using
+// by some third-party build system that cannot/doesn't signal the library
+// type. Note that this fallback works for both static and shared but in case
+// of shared will be sub-optimal compared to having dllimport.
+//
+# define LIBBUTL_EXPORT // Using static or shared.
+#endif
+
+#endif // BUTL_EXPORT