Use i386-elf-* tools by default.

diff --git a/src/Makefile.build b/src/Makefile.build
index 017267f688b14a356d5c8556ecae12956efd29c6..43273a7f54fa743e6e9cfca2d1b6e1141eb31c2c 100644 (file)
--- a/src/Makefile.build
+++ b/src/Makefile.build
@@ -4,7 +4,15 @@ include ../Makefile.vars
 
 SHELL = /bin/sh
 
-CC = gcc
+# Utilities.  
+# On a system where i386-elf is native (e.g. on an x86 GNU/Linux
+# machine) you want to set BINUTIL_PREFIX to expand to null, as shown
+# in the line that's commented out.
+BINUTIL_PREFIX = i386-elf-
+#BINUTIL_PREFIX =
+CC = $(BINUTIL_PREFIX)gcc
+LD = $(BINUTIL_PREFIX)ld
+OBJCOPY = $(BINUTIL_PREFIX)objcopy
 
 VPATH = ../..
 
@@ -75,10 +83,10 @@ threads/kernel.lds.s: CPPFLAGS += -P -C
 threads/kernel.lds.s: threads/kernel.lds.S threads/loader.h
 
 kernel.o: threads/kernel.lds.s $(OBJECTS) 
-       ld -T $< -o $@ $(OBJECTS) `$(CC) -print-libgcc-file-name`
+       $(LD) -T $< -o $@ $(OBJECTS) `$(CC) -print-libgcc-file-name`
 
 kernel.bin: kernel.o
-       objcopy -O binary -R .note -R .comment -S $< $@.tmp
+       $(OBJCOPY) -O binary -R .note -R .comment -S $< $@.tmp
        ../../pad 4096 < $@.tmp > $@
        rm $@.tmp
 
@@ -86,7 +94,7 @@ threads/loader.o: threads/loader.S kernel.bin
        $(CC) -c $< -o $@ $(ASFLAGS) -DKERNEL_LOAD_PAGES=`perl -e 'print +(-s "kernel.bin") / 4096;'`
 
 loader.bin: threads/loader.o
-       ld -N -e start -Ttext 0x7c00 --oformat binary -o $@ $<
+       $(LD) -N -e start -Ttext 0x7c00 --oformat binary -o $@ $<
 
 os.dsk: loader.bin kernel.bin
        cat $^ > $@