Make linking against libgcc configurable
Many (especially ARM) tool chains seem to come with broken or
otherwise unusable (for the purposes of builing U-Boot) run-time
support libraries `libgcc.a'. By using the "USE_PRIVATE_LIBGCC"
setting we allow to use alternative libraries instead.
"USE_PRIVATE_LIBGCC" can either be set as an environment variable in
the shell, or as a command line argument when running "make", i. e.
$ make USE_PRIVATE_LIBGCC=yes
or
$ USE_PRIVATE_LIBGCC=yes
$ export USE_PRIVATE_LIBGCC
$ make
The value of "USE_PRIVATE_LIBGCC" is the name of the directory which
contains the alternative run-time support library `libgcc.a'. The
special value "yes" selects the directory $(OBJTREE)/lib_$(ARCH) .
Note that not all architectures provide an alternative `libgcc.a' in
their lib_$(ARCH) directories - so far, only ARM does.
Signed-off-by: Wolfgang Denk <wd@denx.de>
Cc: Jean-Christophe PLAGNIOL-VILLARD <plagnioj@jcrosoft.com>
Cc: Prafulla Wadaskar <prafulla@marvell.com>
cc: Stefan Roese <sr@denx.de>
diff --git a/board/trab/Makefile b/board/trab/Makefile
index 3a92c0d..2afad88 100644
--- a/board/trab/Makefile
+++ b/board/trab/Makefile
@@ -36,8 +36,6 @@
OBJS_FKT := $(addprefix $(obj),$(COBJS_FKT))
-gcclibdir := $(shell dirname `$(CC) -print-libgcc-file-name`)
-
LOAD_ADDR = 0xc100000
#########################################################################
@@ -52,7 +50,7 @@
-L$(obj)../../examples/standalone -lstubs \
-L$(obj)../../lib_generic -lgeneric \
$(obj)../../lib_arm/div0.o \
- $(obj)../../lib_arm/_*.o
+ $(PLATFORM_LIBS)
$(OBJCOPY) -O srec $(<:.o=) $@
$(obj)trab_fkt.bin: $(obj)trab_fkt.srec