Merge branch 'master' of git://git.denx.de/u-boot-arm

[karo-tx-uboot.git] / config.mk

diff --git a/config.mk b/config.mk
index c225df1a43c1a3179045c659ff8f9a65d834783a..73b5195cb639370fc32884d76d89ba4ea3e9679e 100644 (file)
--- a/config.mk
+++ b/config.mk
@@ -44,28 +44,43 @@ PLATFORM_RELFLAGS =
 PLATFORM_CPPFLAGS =
 PLATFORM_LDFLAGS =
 
-ifeq ($(ARCH),arm)
-ifeq ($(CROSS_COMPILE),powerpc-netbsd-)
-PLATFORM_CPPFLAGS+= -D__ARM__
-endif
-ifeq ($(CROSS_COMPILE),powerpc-openbsd-)
-PLATFORM_CPPFLAGS+= -D__ARM__
-endif
-endif
-
 #########################################################################
 
-CONFIG_SHELL   := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
-                   else if [ -x /bin/bash ]; then echo /bin/bash; \
-                   else echo sh; fi ; fi)
+HOSTCFLAGS     = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer \
+                 $(HOSTCPPFLAGS)
+HOSTSTRIP      = strip
 
-ifeq ($(HOSTOS)-$(HOSTARCH),darwin-ppc)
+#
+# 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
 
 #########################################################################
 #
@@ -95,14 +110,20 @@ RANLIB     = $(CROSS_COMPILE)RANLIB
 # Load generated board configuration
 sinclude $(OBJTREE)/include/autoconf.mk
 
-ifdef  ARCH
-sinclude $(TOPDIR)/$(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)
@@ -141,6 +162,10 @@ ifneq ($(TEXT_BASE),)
 CPPFLAGS += -DTEXT_BASE=$(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
@@ -179,7 +204,7 @@ endif
 
 AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
 
-LDFLAGS += -Bstatic -T $(LDSCRIPT) $(PLATFORM_LDFLAGS)
+LDFLAGS += -Bstatic -T $(obj)u-boot.lds $(PLATFORM_LDFLAGS)
 ifneq ($(TEXT_BASE),)
 LDFLAGS += -Ttext $(TEXT_BASE)
 endif
@@ -194,7 +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))
@@ -207,36 +232,30 @@ 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 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
 
 #########################################################################
 
-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
 
 #########################################################################