Allow to compile out serprog completely

If CONFIG_SERPROG is not set, no stubs and no data of serprog will
remain.

Side benefit: This kills a few dozen lines of code.

r678, r679 and r680 made this possible. Once "Only list available
programers in usage()" is committed, even the usage message will be
adjusted automatically.

Corresponding to flashrom svn r681.
Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Stefan Reinauer <stepan@coresystems.de>

Makefile

@@ -49,7 +49,7 @@ OBJS = chipset_enable.o board_enable.o udelay.o jedec.o stm50flw0x0x.o \
 	sst49lfxxxc.o sst_fwhub.o layout.o cbtable.o flashchips.o physmap.o \
 	flashrom.o w39v080fa.o sharplhf00l04.o w29ee011.o spi.o it87spi.o \
 	ichspi.o w39v040c.o sb600spi.o wbsio_spi.o m29f002.o internal.o \
-	dummyflasher.o pcidev.o nic3com.o satasii.o ft2232_spi.o serprog.o \
+	dummyflasher.o pcidev.o nic3com.o satasii.o ft2232_spi.o \
 	print.o
 
 all: pciutils features dep $(PROGRAM)
@@ -64,14 +64,20 @@ VERSION := 0.9.0-r$(SVNVERSION)
 
 SVNDEF := -D'FLASHROM_VERSION="$(VERSION)"'
 
-$(PROGRAM): $(OBJS)
-	$(CC) $(LDFLAGS) -o $(PROGRAM) $(OBJS) $(LIBS) $(FEATURE_LIBS)
-
-FEATURE_CFLAGS = $(shell LC_ALL=C grep -q "FTDISUPPORT := yes" .features && printf "%s" "-D'FT2232_SPI_SUPPORT=1'")
 # Always enable serprog for now. Needs to be disabled on Windows.
+CONFIG_SERPROG = yes
+
+ifeq ($(CONFIG_SERPROG), yes)
 FEATURE_CFLAGS += -D'SERPROG_SUPPORT=1'
+OBJS += serprog.o
+endif
 
-FEATURE_LIBS = $(shell LC_ALL=C grep -q "FTDISUPPORT := yes" .features && printf "%s" "-lftdi")
+FEATURE_CFLAGS += $(shell LC_ALL=C grep -q "FTDISUPPORT := yes" .features && printf "%s" "-D'FT2232_SPI_SUPPORT=1'")
+
+FEATURE_LIBS += $(shell LC_ALL=C grep -q "FTDISUPPORT := yes" .features && printf "%s" "-lftdi")
+
+$(PROGRAM): $(OBJS)
+	$(CC) $(LDFLAGS) -o $(PROGRAM) $(OBJS) $(LIBS) $(FEATURE_LIBS)
 
 # TAROPTIONS reduces information leakage from the packager's system.
 # If other tar programs support command line arguments for setting uid/gid of

flash.h

@@ -87,7 +87,9 @@ enum programmer {
 	PROGRAMMER_SATASII,
 	PROGRAMMER_IT87SPI,
 	PROGRAMMER_FT2232SPI,
+#if SERPROG_SUPPORT == 1
 	PROGRAMMER_SERPROG,
+#endif
 	PROGRAMMER_INVALID /* This must always be the last entry. */
 };
 

flashrom.c

@@ -139,6 +139,7 @@ const struct programmer_entry programmer_table[] = {
 		.delay			= internal_delay,
 	},
 
+#if SERPROG_SUPPORT == 1
 	{
 		.name			= "serprog",
 		.init			= serprog_init,
@@ -155,6 +156,7 @@ const struct programmer_entry programmer_table[] = {
 		.chip_writen		= fallback_chip_writen,
 		.delay			= serprog_delay,
 	},
+#endif
 
 	{}, /* This entry corresponds to PROGRAMMER_INVALID. */
 };

serprog.c

@@ -23,9 +23,6 @@
 #include <stdlib.h>
 #include <unistd.h>
 #include "flash.h"
-
-#if SERPROG_SUPPORT == 1
-
 #include <string.h>
 #include <ctype.h>
 #include <fcntl.h>
@@ -774,42 +771,3 @@ void serprog_delay(int delay)
 	sp_opbuf_usage += 5;
 	sp_prev_was_write = 0;
 }
-
-#else
-
-int serprog_init(void)
-{
-	fprintf(stderr, "Serial programmer support was not compiled in\n");
-	exit(1);
-}
-
-int serprog_shutdown(void)
-{
-	fprintf(stderr, "Serial programmer support was not compiled in\n");
-	exit(1);
-}
-
-void serprog_chip_writeb(uint8_t val, chipaddr addr)
-{
-	fprintf(stderr, "Serial programmer support was not compiled in\n");
-	exit(1);
-}
-
-uint8_t serprog_chip_readb(const chipaddr addr)
-{
-	fprintf(stderr, "Serial programmer support was not compiled in\n");
-	exit(1);
-}
-
-void serprog_chip_readn(uint8_t *buf, const chipaddr addr, size_t len)
-{
-	fprintf(stderr, "Serial programmer support was not compiled in\n");
-	exit(1);
-}
-
-void serprog_delay(int delay)
-{
-	fprintf(stderr, "Serial programmer support was not compiled in\n");
-	exit(1);
-}
-#endif