build: MinGW now compiles selphy_print cleanly.

Need to test it out. Especially the dynamic DLL loading.

.gitignore

@@ -1,6 +1,8 @@
 *~
 *.o
 *.so
+*.exe
+*.dll
 
 sonyupd
 sonyupdneo

Makefile

@@ -4,7 +4,11 @@
 #
 
 # Basic stuff
+ifneq (,$(findstring mingw,$(CC)))
+EXEC_NAME ?= dyesub_backend.exe
+else
 EXEC_NAME ?= dyesub_backend
+endif
 CPUS ?= $(shell nproc)
 #NO_GUTENPRINT = 1
 REVISION ?= -g$(shell if [ -d .git ] ; then git rev-parse --short HEAD; else echo "NONE" ; fi)
@@ -58,13 +62,16 @@ CPPFLAGS += -DURI_PREFIX=\"$(BACKEND_NAME)\" $(OLD_URI)
 CFLAGS += -funit-at-a-time
 
 # List of backends
-BACKENDS = canonselphy canonselphyneo dnpds40 hiti kodak605 kodak1400 kodak6800 magicard mitsu70x mitsu9550  mitsud90 mitsup95d shinkos1245 shinkos2145 shinkos6145 shinkos6245 sonyupd sonyupdneo
+BACKENDS = canonselphy canonselphyneo dnpds40 hiti kodak605 kodak1400 kodak6800 magicard mitsu70x mitsu9550 mitsud90 mitsup95d shinkos1245 shinkos2145 shinkos6145 shinkos6245 sonyupd sonyupdneo
 
 # For the s6145, mitsu70x, and mitsu9550 backends
+ifneq (,$(findstring mingw,$(CC)))
+CPPFLAGS += -DUSE_LTDL
+LDFLAGS += -lltdl
+else
 CPPFLAGS += -DUSE_DLOPEN
 LDFLAGS += -ldl
-#CPPFLAGS += -DUSE_LTDL
-#LDFLAGS += -lltdl
+endif
 
 # Build stuff
 DEPS += backend_common.h

README

@@ -153,7 +153,17 @@
      Debian/Ubuntu
 	apt-get install libusbx-dev libusb-1.0-0-dev libcups2-dev gutenprint-dev
 
-   All you need to do after that is type 'make'
+     All you need to do after that is type 'make'
+
+  Compilation for Windows:
+
+     This is highly experimental.
+
+     Currently only MinGW is supported.  You will need the 'libltdl' and
+     'libusbx' MinGW packages.
+
+     Once the necessary packages are installed, run 'mingw64-make' and
+     everything should compile cleanly.
 
  ***************************************************************************
   CUPS backend usage:

backend_common.h

@@ -373,5 +373,10 @@ extern struct dyesub_backend BACKEND;
 #define DL_CLOSE(__x) do {} while(0)
 #define DL_EXIT()     do {} while(0)
 #endif
+#ifdef _WIN32
+#define DLL_SUFFIX ".dll"
+#else
+#define DLL_SUFFIX ".so"
+#endif
 
 #endif /* __BACKEND_COMMON_H */

backend_mitsu70x.c

@@ -57,7 +57,7 @@ struct BandImage {
 #define REQUIRED_LIB_APIVERSION 4
 
 /* Image processing library function prototypes */
-#define LIB_NAME_RE "libMitsuD70ImageReProcess.so" // Reimplemented library
+#define LIB_NAME_RE "libMitsuD70ImageReProcess" DLL_SUFFIX
 
 typedef int (*lib70x_getapiversionFN)(void);
 typedef int (*Get3DColorTableFN)(uint8_t *buf, const char *filename);

backend_mitsu9550.c

@@ -57,7 +57,7 @@ struct BandImage {
 #define REQUIRED_LIB_APIVERSION 4
 
 /* Image processing library function prototypes */
-#define LIB_NAME_RE "libMitsuD70ImageReProcess.so" // Reimplemented library
+#define LIB_NAME_RE "libMitsuD70ImageReProcess" DLL_SUFFIX
 
 typedef int (*lib70x_getapiversionFN)(void);
 typedef int (*Get3DColorTableFN)(uint8_t *buf, const char *filename);

backend_shinkos6145.c

@@ -55,8 +55,8 @@
 typedef int (*ImageProcessingFN)(unsigned char *, unsigned short *, void *);
 typedef int (*ImageAvrCalcFN)(unsigned char *, unsigned short, unsigned short, unsigned char *);
 
-#define LIB_NAME    "libS6145ImageProcess.so"    // Official library
-#define LIB_NAME_RE "libS6145ImageReProcess.so" // Reimplemented library
+#define LIB_NAME    "libS6145ImageProcess" DLL_SUFFIX    // Official library
+#define LIB_NAME_RE "libS6145ImageReProcess" DLL_SUFFIX // Reimplemented library
 
 enum {
 	S_IDLE = 0,

lib6145/Makefile

@@ -18,24 +18,30 @@ CFLAGS += -Wall -Wextra -g -Os -std=c99 -D_FORTIFY_SOURCE=2 -fPIC --no-strict-ov
 #CPPFLAGS +=
 CFLAGS += -funit-at-a-time
 
+ifneq (,$(findstring mingw,$(CC)))
+SUFFIX=dll
+else
+SUFFIX=so
+endif
+
 # Build stuff
 SOURCES = libS6145ImageReProcess.c
 
 # And now the rules!
 .PHONY: clean all install cppcheck
 
-all: lib$(LIBS6145_NAME).so
+all: lib$(LIBS6145_NAME).$(SUFFIX)
 
 cppcheck:
 	$(CPPCHECK) -q -v --std=c99 --enable=all -I/usr/include $(CPPFLAGS) $(SOURCES)
 
 install:
 	$(MKDIR) -p $(LIBDIR)
-	$(INSTALL) -o root -m 755 lib$(LIBS6145_NAME).so $(LIBDIR)
+	$(INSTALL) -o root -m 755 lib$(LIBS6145_NAME).$(SUFFIX) $(LIBDIR)
 clean:
-	$(RM) -f lib$(LIBS6145_NAME).so *.o
+	$(RM) -f lib$(LIBS6145_NAME).$(SUFFIX) *.o
 
-lib$(LIBS6145_NAME).so:  $(SOURCES:.c=.o)
+lib$(LIBS6145_NAME).$(SUFFIX):  $(SOURCES:.c=.o)
 	$(CC) $(LDFLAGS) -g -shared -o $@ $^
 
 %.o: %.c

lib70x/Makefile

@@ -25,13 +25,19 @@ CFLAGS += -Wall -Wextra -g -Os -std=c99 -D_FORTIFY_SOURCE=2 -fPIC --no-strict-ov
 #CPPFLAGS +=
 CFLAGS += -funit-at-a-time
 
+ifneq (,$(findstring mingw,$(CC)))
+SUFFIX=dll
+else
+SUFFIX=so
+endif
+
 # Build stuff
 SOURCES = libMitsuD70ImageReProcess.c
 
 # And now the rules!
 .PHONY: clean all install cppcheck
 
-all: lib$(LIBMITSUD70_NAME).so
+all: lib$(LIBMITSUD70_NAME).$(SUFFIX)
 
 cppcheck:
 	$(CPPCHECK) -q -v --std=c99 --enable=all -I/usr/include $(CPPFLAGS) $(SOURCES)
@@ -46,9 +52,9 @@ install:
 	$(INSTALL) -o root -m 644 data/*dat $(BACKEND_DATA_DIR)
 
 clean:
-	$(RM) -f lib$(LIBMITSUD70_NAME).so *.o
+	$(RM) -f lib$(LIBMITSUD70_NAME).$(SUFFIX) *.o
 
-lib$(LIBMITSUD70_NAME).so:  $(SOURCES:.c=.o)
+lib$(LIBMITSUD70_NAME).$(SUFFIX):  $(SOURCES:.c=.o)
 	$(CC) $(LDFLAGS) -g -shared -o $@ $^
 
 %.o: %.c