X-Git-Url: https://git.kernelconcepts.de/?p=karo-tx-uboot.git;a=blobdiff_plain;f=config.mk;h=c6d6f7b12c61454d18559cf32bda1b5a0c07523e;hp=22d3398ca4f1bd30caafcc60b8060140198068fe;hb=1f52d89f2b4b5ca8dde7aa1be02bb1c658e0aa13;hpb=45d65b7f285b17d21270ff002127c246431bd668

diff --git a/config.mk b/config.mk
index 22d3398ca4..c6d6f7b12c 100644
--- a/config.mk
+++ b/config.mk
@@ -12,7 +12,7 @@
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of
-# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.	See the
 # GNU General Public License for more details.
 #
 # You should have received a copy of the GNU General Public License
@@ -44,65 +44,51 @@ PLATFORM_RELFLAGS =
 PLATFORM_CPPFLAGS =
 PLATFORM_LDFLAGS =
 
+#########################################################################
+
+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.
 #
-# When cross-compiling on NetBSD, we have to define __PPC__ or else we
-# will pick up a va_list declaration that is incompatible with the
-# actual argument lists emitted by the compiler.
+# 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.
 #
-# [Tested on NetBSD/i386 1.5 + cross-powerpc-netbsd-1.3]
 
-ifeq ($(ARCH),ppc)
-ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
-PLATFORM_CPPFLAGS+= -D__PPC__
-endif
-ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
-PLATFORM_CPPFLAGS+= -D__PPC__
-endif
-endif
+ifeq ($(HOSTOS),darwin)
+# get major and minor product version (e.g. '10' and '6' for Snow Leopard)
+DARWIN_MAJOR_VERSION	= $(shell sw_vers -productVersion | cut -f 1 -d '.')
+DARWIN_MINOR_VERSION	= $(shell sw_vers -productVersion | cut -f 2 -d '.')
 
-ifeq ($(ARCH),arm)
-ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
-PLATFORM_CPPFLAGS+= -D__ARM__
-endif
-ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
-PLATFORM_CPPFLAGS+= -D__ARM__
-endif
-endif
-
-# Load generated board configuration
-sinclude $(OBJTREE)/include/autoconf.mk
+os_x_before	= $(shell if [ $(DARWIN_MAJOR_VERSION) -le $(1) -a \
+	$(DARWIN_MINOR_VERSION) -le $(2) ] ; then echo "$(3)"; else echo "$(4)"; fi ;)
 
-ifdef	ARCH
-sinclude $(TOPDIR)/$(ARCH)_config.mk	# include architecture dependend rules
-endif
-ifdef	CPU
-sinclude $(TOPDIR)/cpu/$(CPU)/config.mk	# include  CPU	specific rules
-endif
-ifdef	SOC
-sinclude $(TOPDIR)/cpu/$(CPU)/$(SOC)/config.mk	# include  SoC	specific rules
-endif
-ifdef	VENDOR
-BOARDDIR = $(VENDOR)/$(BOARD)
+# Snow Leopards build environment has no longer restrictions as described above
+HOSTCC		 = $(call os_x_before, 10, 5, "cc", "gcc")
+HOSTCFLAGS	+= $(call os_x_before, 10, 4, "-traditional-cpp")
+HOSTLDFLAGS	+= $(call os_x_before, 10, 5, "-multiply_defined suppress")
 else
-BOARDDIR = $(BOARD)
-endif
-ifdef	BOARD
-sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk	# include board specific rules
+HOSTCC		= gcc
 endif
 
-#########################################################################
+ifeq ($(HOSTOS),cygwin)
+HOSTCFLAGS	+= -ansi
+endif
 
-CONFIG_SHELL	:= $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
-		    else if [ -x /bin/bash ]; then echo /bin/bash; \
-		    else echo sh; fi ; fi)
+# 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.
 
-ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
-HOSTCC		= cc
-else
-HOSTCC		= gcc
-endif
-HOSTCFLAGS	= -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
-HOSTSTRIP	= strip
+HOSTCFLAGS_NOPED = $(filter-out -pedantic,$(HOSTCFLAGS))
+HOSTCFLAGS	+= -pedantic
 
 #########################################################################
 #
@@ -127,6 +113,37 @@ OBJCOPY = $(CROSS_COMPILE)objcopy
 OBJDUMP = $(CROSS_COMPILE)objdump
 RANLIB	= $(CROSS_COMPILE)RANLIB
 
+#########################################################################
+
+# Load generated board configuration
+sinclude $(OBJTREE)/include/autoconf.mk
+
+# Some architecture config.mk files need to know what CPUDIR is set to,
+# so calculate CPUDIR before including ARCH/SOC/CPU config.mk files.
+# Check if arch/$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 $(TOPDIR)/$(CPUDIR)/$(SOC)/config.mk	# include  SoC	specific rules
+endif
+ifdef	VENDOR
+BOARDDIR = $(VENDOR)/$(BOARD)
+else
+BOARDDIR = $(BOARD)
+endif
+ifdef	BOARD
+sinclude $(TOPDIR)/board/$(BOARDDIR)/config.mk	# include board specific rules
+endif
+
+#########################################################################
+
 ifneq (,$(findstring s,$(MAKEFLAGS)))
 ARFLAGS = cr
 else
@@ -149,8 +166,12 @@ gccincdir := $(shell $(CC) -print-file-name=include)
 
 CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS)		\
 	-D__KERNEL__
-ifneq ($(TEXT_BASE),)
-CPPFLAGS += -DTEXT_BASE=$(TEXT_BASE)
+ifneq ($(CONFIG_SYS_TEXT_BASE),)
+CPPFLAGS += -DCONFIG_SYS_TEXT_BASE=$(CONFIG_SYS_TEXT_BASE)
+endif
+
+ifneq ($(RESET_VECTOR_ADDRESS),)
+CPPFLAGS += -DRESET_VECTOR_ADDRESS=$(RESET_VECTOR_ADDRESS)
 endif
 
 ifneq ($(OBJTREE),$(SRCTREE))
@@ -158,7 +179,7 @@ CPPFLAGS += -I$(OBJTREE)/include2 -I$(OBJTREE)/include
 endif
 
 CPPFLAGS += -I$(TOPDIR)/include
-CPPFLAGS += -fno-builtin -ffreestanding -nostdinc 	\
+CPPFLAGS += -fno-builtin -ffreestanding -nostdinc	\
 	-isystem $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
 
 ifdef BUILD_TAG
@@ -168,13 +189,7 @@ else
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes
 endif
 
-# avoid trigraph warnings while parsing pci.h (produced by NIOS gcc-2.9)
-# this option have to be placed behind -Wall -- that's why it is here
-ifeq ($(ARCH),nios)
-ifeq ($(findstring 2.9,$(shell $(CC) --version)),2.9)
-CFLAGS := $(CPPFLAGS) -Wall -Wno-trigraphs
-endif
-endif
+CFLAGS += $(call cc-option,-fno-stack-protector)
 
 # $(CPPFLAGS) sets -g, which causes gcc to pass a suitable -g<format>
 # option to the assembler.
@@ -189,9 +204,9 @@ endif
 
 AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
 
-LDFLAGS += -Bstatic -T $(LDSCRIPT) $(PLATFORM_LDFLAGS)
-ifneq ($(TEXT_BASE),)
-LDFLAGS += -Ttext $(TEXT_BASE)
+LDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS)
+ifneq ($(CONFIG_SYS_TEXT_BASE),)
+LDFLAGS += -Ttext $(CONFIG_SYS_TEXT_BASE)
 endif
 
 # Location of a usable BFD library, where we define "usable" as
@@ -204,7 +219,7 @@ endif
 #
 # So far, this is used only by tools/gdb/Makefile.
 
-ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
+ifeq ($(HOSTOS),darwin)
 BFD_ROOT_DIR =		/usr/local/tools
 else
 ifeq ($(HOSTARCH),$(ARCH))
@@ -217,36 +232,37 @@ BFD_ROOT_DIR =		/opt/powerpc
 endif
 endif
 
-ifeq ($(PCI_CLOCK),PCI_66M)
-CFLAGS := $(CFLAGS) -DPCI_66M
-endif
-
 #########################################################################
 
-export	CONFIG_SHELL HPATH HOSTCC HOSTCFLAGS CROSS_COMPILE \
-	AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP \
-	MAKE
-export	TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
+export	HOSTCC HOSTCFLAGS HOSTLDFLAGS PEDCFLAGS HOSTSTRIP CROSS_COMPILE \
+	AS LD CC CPP AR NM STRIP OBJCOPY OBJDUMP MAKE
+export	CONFIG_SYS_TEXT_BASE PLATFORM_CPPFLAGS PLATFORM_RELFLAGS CPPFLAGS CFLAGS AFLAGS
 
 #########################################################################
 
-ifndef REMOTE_BUILD
-
-%.s:	%.S
-	$(CPP) $(AFLAGS) -o $@ $<
-%.o:	%.S
-	$(CC) $(AFLAGS) -c -o $@ $<
-%.o:	%.c
-	$(CC) $(CFLAGS) -c -o $@ $<
-
-else
-
+# Allow boards to use custom optimize flags on a per dir/file basis
+BCURDIR = $(subst $(SRCTREE)/,,$(CURDIR:$(obj)%=%))
 $(obj)%.s:	%.S
-	$(CPP) $(AFLAGS) -o $@ $<
+	$(CPP) $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
+		-o $@ $<
 $(obj)%.o:	%.S
-	$(CC) $(AFLAGS) -c -o $@ $<
+	$(CC)  $(AFLAGS) $(AFLAGS_$(BCURDIR)/$(@F)) $(AFLAGS_$(BCURDIR)) \
+		-o $@ $< -c
 $(obj)%.o:	%.c
-	$(CC) $(CFLAGS) -c -o $@ $<
-endif
+	$(CC)  $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+		-o $@ $< -c
+$(obj)%.i:	%.c
+	$(CPP) $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+		-o $@ $< -c
+$(obj)%.s:	%.c
+	$(CC)  $(CFLAGS) $(CFLAGS_$(BCURDIR)/$(@F)) $(CFLAGS_$(BCURDIR)) \
+		-o $@ $< -c -S
+
+#########################################################################
+
+# If the list of objects to link is empty, just create an empty built-in.o
+cmd_link_o_target = $(if $(strip $1),\
+		      $(LD) -r -o $@ $1 ,\
+		      rm -f $@; $(AR) rcs $@ )
 
 #########################################################################