common: Move dynamic libary loading definitions into common header.

backend_common.h

@@ -351,4 +351,27 @@ extern struct dyesub_backend BACKEND;
 				quiet++; \
 				break;
 
+/* Dynamic library loading */
+#if defined(USE_DLOPEN)
+#define WITH_DYNAMIC
+#include <dlfcn.h>
+#define DL_INIT() do {} while(0)
+#define DL_OPEN(__x) dlopen(__x, RTLD_NOW)
+#define DL_SYM(__x, __y) dlsym(__x, __y)
+#define DL_CLOSE(__x) dlclose(__x)
+#define DL_EXIT() do {} while(0)
+#elif defined(USE_LTDL)
+#define WITH_DYNAMIC
+#include <ltdl.h>
+#define DL_INIT() lt_dlinit()
+#define DL_OPEN(__x) lt_dlopen(__x)
+#define DL_SYM(__x, __y) lt_dlsym(__x, __y)
+#define DL_CLOSE(__x) do {} while(0)
+#define DL_EXIT() lt_dlexit()
+#else
+#define DL_INIT()     do {} while(0)
+#define DL_CLOSE(__x) do {} while(0)
+#define DL_EXIT()     do {} while(0)
+#endif
+
 #endif /* __BACKEND_COMMON_H */

backend_mitsu70x.c

@@ -33,26 +33,7 @@
 #include <config.h>
 #endif
 
-#if defined(USE_DLOPEN)
-#define WITH_DYNAMIC
-#include <dlfcn.h>
-#define DL_INIT() do {} while(0)
-#define DL_OPEN(__x) dlopen(__x, RTLD_NOW)
-#define DL_SYM(__x, __y) dlsym(__x, __y)
-#define DL_CLOSE(__x) dlclose(__x)
-#define DL_EXIT() do {} while(0)
-#elif defined(USE_LTDL)
-#define WITH_DYNAMIC
-#include <ltdl.h>
-#define DL_INIT() lt_dlinit()
-#define DL_OPEN(__x) lt_dlopen(__x)
-#define DL_SYM(__x, __y) lt_dlsym(__x, __y)
-#define DL_CLOSE(__x) do {} while(0)
-#define DL_EXIT() lt_dlexit()
-#else
-#define DL_INIT()     do {} while(0)
-#define DL_CLOSE(__x) do {} while(0)
-#define DL_EXIT()     do {} while(0)
+#ifndef WITH_DYNAMIC
 #warning "No dynamic loading support!"
 #endif
 

backend_mitsu9550.c

@@ -1,7 +1,7 @@
 /*
  *   Mitsubishi CP-9xxx Photo Printer Family CUPS backend
  *
- *   (c) 2014-2019 Solomon Peachy <pizza@shaftnet.org>
+ *   (c) 2014-2020 Solomon Peachy <pizza@shaftnet.org>
  *
  *   The latest version of this program can be found at:
  *
@@ -33,26 +33,7 @@
 #include <config.h>
 #endif
 
-#if defined(USE_DLOPEN)
-#define WITH_DYNAMIC
-#include <dlfcn.h>
-#define DL_INIT() do {} while(0)
-#define DL_OPEN(__x) dlopen(__x, RTLD_NOW)
-#define DL_SYM(__x, __y) dlsym(__x, __y)
-#define DL_CLOSE(__x) dlclose(__x)
-#define DL_EXIT() do {} while(0)
-#elif defined(USE_LTDL)
-#define WITH_DYNAMIC
-#include <ltdl.h>
-#define DL_INIT() lt_dlinit()
-#define DL_OPEN(__x) lt_dlopen(__x)
-#define DL_SYM(__x, __y) lt_dlsym(__x, __y)
-#define DL_CLOSE(__x) do {} while(0)
-#define DL_EXIT() lt_dlexit()
-#else
-#define DL_INIT()     do {} while(0)
-#define DL_CLOSE(__x) do {} while(0)
-#define DL_EXIT()     do {} while(0)
+#ifndef WITH_DYNAMIC
 #warning "No dynamic loading support!"
 #endif
 

backend_shinkos6145.c

@@ -47,26 +47,7 @@
 #include <config.h>
 #endif
 
-#if defined(USE_DLOPEN)
-#define WITH_DYNAMIC
-#include <dlfcn.h>
-#define DL_INIT() do {} while(0)
-#define DL_OPEN(__x) dlopen(__x, RTLD_NOW)
-#define DL_SYM(__x, __y) dlsym(__x, __y)
-#define DL_CLOSE(__x) dlclose(__x)
-#define DL_EXIT() do {} while(0)
-#elif defined(USE_LTDL)
-#define WITH_DYNAMIC
-#include <ltdl.h>
-#define DL_INIT() lt_dlinit()
-#define DL_OPEN(__x) lt_dlopen(__x)
-#define DL_SYM(__x, __y) lt_dlsym(__x, __y)
-#define DL_CLOSE(__x) do {} while(0)
-#define DL_EXIT() lt_dlexit()
-#else
-#define DL_INIT()     do {} while(0)
-#define DL_CLOSE(__x) do {} while(0)
-#define DL_EXIT()     do {} while(0)
+#ifndef WITH_DYNAMIC
 #warning "No dynamic loading support!"
 #endif