[U-Boot-Users] [PATCH] notes on cpu/mips/config.mk

[Rodolfo Giometti <giometti@linux.it>]

Hello,

I have a mips based board and during u-boot support developing I
notice that in file ?cpu/mips/config.mk?:

* should be replaced this line 

   -mips-linux-as --version|grep "GNU assembler"|awk '{print $$3}'|awk -F . '{print $$2}')
   +$(AS) --version|grep "GNU assembler"|awk '{print $$3}'|awk -F . '{print $$2}')

to avoid errors for user not having ?mips-linux-as? (I have
mipsel-linux-as).

* should be used ?allow_branch_to_undefined? or
?mips_allow_branch_to_undefined? as GAS option? My toolchain use
?allow_branch_to_undefined?...

* Variable MIPSFLAGS is ambiguous, I suggest using MIPSCFLAGS and/or
MIPSLDFLAGS.

In the end I suggest the following patch for file cpu/mips/config.mk:

Index: cpu/mips/config.mk
===================================================================
RCS file: /home/develop/cvs_private/uboot-mips-exadron/cpu/mips/config.mk,v
retrieving revision 1.1.1.1
diff -u -r1.1.1.1 config.mk
--- a/cpu/mips/config.mk        16 Sep 2005 12:14:19 -0000      1.1.1.1
+++ b/cpu/mips/config.mk        16 Sep 2005 14:19:29 -0000
@@ -21,20 +21,22 @@
 # MA 02111-1307 USA
 #
 v=$(shell \
-mips-linux-as --version|grep "GNU assembler"|awk '{print $$3}'|awk -F . '{print $$2}')
-MIPSFLAGS=$(shell \
+$(AS) --version|grep "GNU assembler"|awk '{print $$3}'|awk -F . '{print $$2}')
+MIPSCFLAGS=$(shell \
 if [ "$v" -lt "14" ]; then \
        echo "-mcpu=4kc"; \
 else \
-       echo "-march=4kc -mtune=4kc -Wa,-mips_allow_branch_to_undefined"; \
+       echo "-march=4kc -mtune=4kc -Wa,-allow_branch_to_undefined"; \
 fi)
 
 ifneq (,$(findstring 4KCle,$(CROSS_COMPILE)))
-ENDIANNESS = -EL
-else
-ENDIANNESS = -EB
+MIPSCFLAGS += -EL
+endif
+ifneq (,$(findstring mipsel,$(CROSS_COMPILE)))
+MIPSLDFLAGS += -EL
 endif
 
-MIPSFLAGS += $(ENDIANNESS) -mabicalls
+MIPSCFLAGS += -mabicalls
 
-PLATFORM_CPPFLAGS += $(MIPSFLAGS)
+PLATFORM_CPPFLAGS += $(MIPSCFLAGS)
+PLATFORM_LDFLAGS += $(MIPSLDFLAGS)

Ciao,

Rodolfo

-- 

GNU/Linux Solutions                  e-mail:    giometti at linux.it
Linux Device Driver                             giometti at enneenne.com
Embedded Systems                     home page: giometti.enneenne.com
UNIX programming                     phone:     +39 349 2432127