Minor cleanup

[u-boot] / config.mk

diff --git a/config.mk b/config.mk
index 92844b1f5d233e059ba0fd6157fb551ae3b38bb3..b59667a83311f39458cb501434979b4996b1e029 100644 (file)
--- a/config.mk
+++ b/config.mk
@@ -23,6 +23,11 @@
 
 #########################################################################
 
+# clean the slate ...
+PLATFORM_RELFLAGS =
+PLATFORM_CPPFLAGS =
+PLATFORM_LDFLAGS =
+
 #
 # 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
@@ -48,12 +53,19 @@ PLATFORM_CPPFLAGS+= -D__ARM__
 endif
 endif
 
+ifeq ($(ARCH),blackfin)
+PLATFORM_CPPFLAGS+= -D__BLACKFIN__ -mno-underscore
+endif
+
 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)
 else
@@ -78,6 +90,12 @@ HOSTCFLAGS   = -Wall -Wstrict-prototypes -O2 -fomit-frame-pointer
 HOSTSTRIP      = strip
 
 #########################################################################
+#
+# Option checker (courtesy linux kernel) to ensure
+# only supported compiler options are used
+#
+cc-option = $(shell if $(CC) $(CFLAGS) $(1) -S -o /dev/null -xc /dev/null \
+               > /dev/null 2>&1; then echo "$(1)"; else echo "$(2)"; fi ;)
 
 #
 # Include the make variables (CC, etc...)
@@ -94,17 +112,21 @@ OBJDUMP = $(CROSS_COMPILE)objdump
 RANLIB = $(CROSS_COMPILE)RANLIB
 
 RELFLAGS= $(PLATFORM_RELFLAGS)
-DBGFLAGS= -g #-DDEBUG
+DBGFLAGS= -g # -DDEBUG
 OPTFLAGS= -Os #-fomit-frame-pointer
-#LDSCRIPT := board/$(BOARDDIR)/u-boot.lds.debug
+ifndef LDSCRIPT
+#LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds.debug
 LDSCRIPT := $(TOPDIR)/board/$(BOARDDIR)/u-boot.lds
-OBJCFLAGS := --gap-fill=0xff
+endif
+OBJCFLAGS += --gap-fill=0xff
+
+gccincdir := $(shell $(CC) -print-file-name=include)
 
 CPPFLAGS := $(DBGFLAGS) $(OPTFLAGS) $(RELFLAGS)                \
        -D__KERNEL__ -DTEXT_BASE=$(TEXT_BASE)           \
        -I$(TOPDIR)/include                             \
-       -fno-builtin                                    \
-       -pipe $(PLATFORM_CPPFLAGS)
+       -fno-builtin -ffreestanding -nostdinc -isystem  \
+       $(gccincdir) -pipe $(PLATFORM_CPPFLAGS)
 
 ifdef BUILD_TAG
 CFLAGS := $(CPPFLAGS) -Wall -Wstrict-prototypes \
@@ -113,7 +135,23 @@ 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 := $(CPPFLAGS) -Wall -Wno-trigraphs
+endif
+endif
+
 AFLAGS_DEBUG := -Wa,-gstabs
+
+# turn jbsr into jsr for m68k
+ifeq ($(ARCH),m68k)
+ifeq ($(findstring 3.4,$(shell $(CC) --version)),3.4)
+AFLAGS_DEBUG := -Wa,-gstabs,-S
+endif
+endif
+
 AFLAGS := $(AFLAGS_DEBUG) -D__ASSEMBLY__ $(CPPFLAGS)
 
 LDFLAGS += -Bstatic -T $(LDSCRIPT) -Ttext $(TEXT_BASE) $(PLATFORM_LDFLAGS)
@@ -141,6 +179,10 @@ 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 \