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Makefile: detect unsupported configuration options

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Detect incompatible CONFIG_FOO=yes for the specified target and refuse
to compile with a meaningful error message. Set the default for
incompatible CONFIG_FOO to no.

Just running "make" should result in a a build which compiles the common
subset of available and working features.

Corresponding to flashrom svn r1048.

Signed-off-by: Carl-Daniel Hailfinger <c-d.hailfinger.devel.2006@gmx.net>
Acked-by: Idwer Vollering <vidwer+lists.flashrom@gmail.com>
This commit is contained in:
Carl-Daniel Hailfinger
2010-06-14 18:40:59 +00:00
parent ddbab7116c
commit 5d3fcb9633
1 changed files with 35 additions and 5 deletions
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40
Makefile
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@ -53,9 +53,28 @@ EXEC_SUFFIX := .exe
CPPFLAGS += -I../libgetopt -I../libpci/include
# FIXME Check if we can achieve the same effect with -L../libgetopt -lgetopt
LIBS += ../libgetopt/libgetopt.a
# Bus Pirate and Serprog are not supported under DOS.
CONFIG_BUSPIRATE_SPI = no
CONFIG_SERPROG = no
# Bus Pirate and Serprog are not supported under DOS (missing serial support).
ifeq ($(CONFIG_BUSPIRATE_SPI), yes)
UNSUPPORTED_FEATURES += CONFIG_BUSPIRATE_SPI=yes
else
override CONFIG_BUSPIRATE_SPI = no
endif
ifeq ($(CONFIG_SERPROG), yes)
UNSUPPORTED_FEATURES += CONFIG_SERPROG=yes
else
override CONFIG_SERPROG = no
endif
# Dediprog and FT2232 are not supported under DOS (missing USB support).
ifeq ($(CONFIG_DEDIPROG), yes)
UNSUPPORTED_FEATURES += CONFIG_DEDIPROG=yes
else
override CONFIG_DEDIPROG = no
endif
ifeq ($(CONFIG_FT2232_SPI), yes)
UNSUPPORTED_FEATURES += CONFIG_FT2232_SPI=yes
else
override CONFIG_FT2232_SPI = no
endif
endif
CHIP_OBJS = jedec.o stm50flw0x0x.o w39v040c.o w39v080fa.o w29ee011.o \
@ -279,7 +298,7 @@ distclean: clean
strip: $(PROGRAM)$(EXEC_SUFFIX)
$(STRIP) $(STRIP_ARGS) $(PROGRAM)$(EXEC_SUFFIX)
compiler:
compiler: featuresavailable
@printf "Checking for a C compiler... "
@$(shell ( echo "int main(int argc, char **argv)"; \
echo "{ return 0; }"; ) > .test.c )
@ -318,6 +337,17 @@ endif
.features: features
# If a user does not explicitly request a non-working feature, we should
# silently disable it. However, if a non-working (does not compile) feature
# is explicitly requested, we should bail out with a descriptive error message.
ifeq ($(UNSUPPORTED_FEATURES), )
featuresavailable:
else
featuresavailable:
@echo "The following features are unavailable on your machine: $(UNSUPPORTED_FEATURES)"
@false
endif
ifeq ($(CONFIG_FT2232_SPI), yes)
features: compiler
@echo "FEATURES := yes" > .features.tmp
@ -375,6 +405,6 @@ tarball: export
djgpp-dos: clean
make CC=i586-pc-msdosdjgpp-gcc STRIP=i586-pc-msdosdjgpp-strip WARNERROR=no OS_ARCH=DOS
.PHONY: all clean distclean compiler pciutils features export tarball dos
.PHONY: all clean distclean compiler pciutils features export tarball dos featuresavailable
-include $(OBJS:.o=.d)