Make the presence of Linux SPI headers mandatory for linux_spi
This solution is copied from ft2232_spi and is equally hacky.
Thanks to M.K. for investigating the history of <linux/spi/spidev.h>, which
led to a hopefully more robust check.
Corresponding to flashrom svn r1517.
Signed-off-by: Stefan Tauner <stefan.tauner@alumni.tuwien.ac.at>
Acked-by: Michael Karcher <flashrom@mkarcher.dialup.fu-berlin.de>
diff --git a/Makefile b/Makefile
index c921a74..4de89e0 100644
--- a/Makefile
+++ b/Makefile
@@ -485,7 +485,8 @@
endif
ifeq ($(CONFIG_LINUX_SPI), yes)
-FEATURE_CFLAGS += -D'CONFIG_LINUX_SPI=1'
+# This is a totally ugly hack.
+FEATURE_CFLAGS += $(shell LC_ALL=C grep -q "LINUX_SPI_SUPPORT := yes" .features && printf "%s" "-D'CONFIG_LINUX_SPI=1'")
PROGRAMMER_OBJS += linux_spi.o
endif
@@ -671,6 +672,19 @@
endef
export UTSNAME_TEST
+define LINUX_SPI_TEST
+#include <linux/types.h>
+#include <linux/spi/spidev.h>
+
+int main(int argc, char **argv)
+{
+ (void) argc;
+ (void) argv;
+ return 0;
+}
+endef
+export LINUX_SPI_TEST
+
features: compiler
@echo "FEATURES := yes" > .features.tmp
ifeq ($(CONFIG_FT2232_SPI), yes)
@@ -680,6 +694,13 @@
( echo "found."; echo "FTDISUPPORT := yes" >> .features.tmp ) || \
( echo "not found."; echo "FTDISUPPORT := no" >> .features.tmp )
endif
+ifeq ($(CONFIG_LINUX_SPI), yes)
+ @printf "Checking if Linux SPI headers are present... "
+ @echo "$$LINUX_SPI_TEST" > .featuretest.c
+ @$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) .featuretest.c -o .featuretest$(EXEC_SUFFIX) >/dev/null 2>&1 && \
+ ( echo "yes."; echo "LINUX_SPI_SUPPORT := yes" >> .features.tmp ) || \
+ ( echo "no."; echo "LINUX_SPI_SUPPORT := no" >> .features.tmp )
+endif
@printf "Checking for utsname support... "
@echo "$$UTSNAME_TEST" > .featuretest.c
@$(CC) $(CPPFLAGS) $(CFLAGS) $(LDFLAGS) .featuretest.c -o .featuretest$(EXEC_SUFFIX) >/dev/null 2>&1 && \