#########################################################################
+HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
+ $(HOSTCPPFLAGS)
+HOSTSTRIP = strip
+
+#
+# Mac OS X / Darwin's C preprocessor is Apple specific. It
+# generates numerous errors and warnings. We want to bypass it
+# and use GNU C's cpp. To do this we pass the -traditional-cpp
+# option to the compiler. Note that the -traditional-cpp flag
+# DOES NOT have the same semantics as GNU C's flag, all it does
+# is invoke the GNU preprocessor in stock ANSI/ISO C fashion.
+#
+# Apple's linker is similar, thanks to the new 2 stage linking
+# multiple symbol definitions are treated as errors, hence the
+# -multiply_defined suppress option to turn off this error.
+#
+
ifeq ($(HOSTOS),darwin)
HOSTCC = cc
+HOSTCFLAGS += -traditional-cpp
+HOSTLDFLAGS += -multiply_defined suppress
else
HOSTCC = gcc
endif
-HOSTCFLAGS = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
-HOSTSTRIP = strip
+
+ifeq ($(HOSTOS),cygwin)
+HOSTCFLAGS += -ansi
+endif
+
+# We build some files with extra pedantic flags to try to minimize things
+# that won't build on some weird host compiler -- though there are lots of
+# exceptions for files that aren't complaint.
+
+HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
+HOSTCFLAGS += -pedantic
#########################################################################
#
# Load generated board configuration
sinclude $(OBJTREE)/include/autoconf.mk
-ifdef ARCH
-sinclude $(TOPDIR)/lib_$(ARCH)/config.mk # include architecture dependend rules
-endif
-ifdef CPU
-sinclude $(TOPDIR)/cpu/$(CPU)/config.mk # include CPU specific rules
+# Some architecture config.mk files need to know what CPUDIR is set to,
+# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
+# Check if arch/$ARCH/cpu/$CPU exists, otherwise assume arch/$ARCH/cpu contains
+# CPU-specific code.
+CPUDIR=arch/$(ARCH)/cpu/$(CPU)
+ifneq ($(SRCTREE)/$(CPUDIR),$(wildcard $(SRCTREE)/$(CPUDIR)))
+CPUDIR=arch/$(ARCH)/cpu
endif
+
+sinclude $(TOPDIR)/arch/$(ARCH)/config.mk # include architecture dependend rules
+sinclude $(TOPDIR)/$(CPUDIR)/config.mk # include CPU specific rules
+
ifdef SOC
-sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk # include SoC specific rules
+sinclude $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk # include SoC specific rules
endif
ifdef VENDOR
BOARDDIR = $(VENDOR)/$(BOARD)
CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
endif
+ifneq ($(RESET_VECTOR_ADDRESS),)
+CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
+endif
+
ifneq ($(OBJTREE),$(SRCTREE))
CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
endif
LDFLAGS += -Ttext $(TEXT_BASE)
endif
-# Special flags for CPP when processing the linker script
-# Linker versions prior to 2.16 don't understand the builting
-# functions SORT_BY_ALIGNMENT() and SORT_BY_NAME(), so disable these
-ifeq ($(shell $(LD) -v | \
- sed -ne 's/GNU ld version \([0-9][0-9]*\)\.\([0-9][0-9]*\) .*/[ \1 -lt 2 ] || [ \2 -lt 16 ] \&\& echo old_ld/p' | \
- sh),old_ld)
-LDPPFLAGS += -D'SORT_BY_ALIGNMENT(x)=x' -D'SORT_BY_NAME(x)=x'
-endif
-
-
# Location of a usable BFD library, where we define "usable" as
# "built for ${HOST}, supports ${TARGET}". Sensible values are
# - When cross-compiling: the root of the cross-environment
#########################################################################
-export HOSTCC HOSTCFLAGS CROSS_COMPILE \
+export HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
export TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
#########################################################################
# Allow boards to use custom optimize flags on a per dir/file basis
-BCURDIR := $(notdir $(CURDIR))
+BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
$(obj)%.s: %.S
- $(CPP) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $<
+ $(CPP) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
+ -o $@ $<
$(obj)%.o: %.S
- $(CC) $(AFLAGS) $(AFLAGS_$(@F)) $(AFLAGS_$(BCURDIR)) -o $@ $< -c
+ $(CC) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
+ -o $@ $< -c
$(obj)%.o: %.c
- $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
+ $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $< -c
$(obj)%.i: %.c
- $(CPP) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c
+ $(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $< -c
$(obj)%.s: %.c
- $(CC) $(CFLAGS) $(CFLAGS_$(@F)) $(CFLAGS_$(BCURDIR)) -o $@ $< -c -S
+ $(CC) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+ -o $@ $< -c -S
#########################################################################