Make XKB_EXPORT do dllexport on Windows

Without this, the test-internal libraries (which don't use the .def file
because they contain additional private symbols) can't be made shared.
But it also makes sense for consistency with GCC.

Signed-off-by: Ran Benita <[email protected]>

Author: bluetech

include/xkbcommon/xkbcommon.h

@@ -33,6 +33,8 @@ extern "C" {
 
 #if defined(__GNUC__) && !defined(__CYGWIN__)
 # define XKB_EXPORT      __attribute__((visibility("default")))
+#elif defined(_WIN32)
+# define XKB_EXPORT      __declspec(dllexport)
 #else
 # define XKB_EXPORT
 #endif

include/xkbcommon/xkbregistry.h

@@ -21,6 +21,8 @@ extern "C" {
 
 #if defined(__GNUC__) && !defined(__CYGWIN__)
 # define RXKB_EXPORT      __attribute__((visibility("default")))
+#elif defined(_WIN32)
+# define RXKB_EXPORT      __declspec(dllexport)
 #else
 # define RXKB_EXPORT
 #endif