[PATCH 2.4.25] enable cross-compilation from Mac OS X

[PATCH 2.4.25] enable cross-compilation from Mac OS X

[Martin Schaffner]

Hi,

After setting up a cross-compile toolchain (using 
http://vserver.13thfloor.at/Stuff/Cross/) on Mac OS X 10.3.2, and 
applying the following patch, I was able to compile a bootable linux 
kernel with the command:
make CROSS_COMPILE=/usr/local/bin/powerpc-linux-gnu-

Please consider applying the patch to the main 2.4 tree.

I was also able to compile 2.6.1 with basically the same patch, but it 
required some additional fiddling with the makefiles in 
not-entirely-clean ways.

--- Makefile.old        Wed Feb 18 13:36:32 2004
+++ Makefile    Tue Feb 24 11:36:13 2004
@@ -5,7 +5,7 @@

  KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)

-ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e 
s/arm.*/arm/ -e s/sa110/arm/)
+ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e 
s/arm.*/arm/ -e s/sa110/arm/ -e s/Power\ Macintosh/ppc/)
  KERNELPATH=kernel-$(shell echo $(KERNELRELEASE) | sed -e "s/-//g")

  CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \
@@ -353,7 +353,7 @@
         @rm -f .ver1

  include/linux/version.h: ./Makefile
-       @expr length "$(KERNELRELEASE)" \<= $(uts_len) > /dev/null || \
+       @expr "$(KERNELRELEASE)" : '.*' \<= $(uts_len) > /dev/null || \
           (echo KERNELRELEASE \"$(KERNELRELEASE)\" exceeds $(uts_len) 
characters >&2; false)
         @echo \#define UTS_RELEASE \"$(KERNELRELEASE)\" > .ver
         @echo \#define LINUX_VERSION_CODE `expr $(VERSION) \\* 65536 + 
$(PATCHLEVEL) \\* 256 + $(SUBLEVEL)` >> .ver

Re: [PATCH 2.4.25] enable cross-compilation from Mac OS X

[Mikael Pettersson]

Martin Schaffner writes:
 > Hi,
 > 
 > After setting up a cross-compile toolchain (using 
 > http://vserver.13thfloor.at/Stuff/Cross/) on Mac OS X 10.3.2, and 
 > applying the following patch, I was able to compile a bootable linux 
 > kernel with the command:
 > make CROSS_COMPILE=/usr/local/bin/powerpc-linux-gnu-
 > 
 > Please consider applying the patch to the main 2.4 tree.
 > 
 > I was also able to compile 2.6.1 with basically the same patch, but it 
 > required some additional fiddling with the makefiles in 
 > not-entirely-clean ways.
 > 
 > --- Makefile.old        Wed Feb 18 13:36:32 2004
 > +++ Makefile    Tue Feb 24 11:36:13 2004
 > @@ -5,7 +5,7 @@
 > 
 >   KERNELRELEASE=$(VERSION).$(PATCHLEVEL).$(SUBLEVEL)$(EXTRAVERSION)
 > 
 > -ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e 
 > s/arm.*/arm/ -e s/sa110/arm/)
 > +ARCH := $(shell uname -m | sed -e s/i.86/i386/ -e s/sun4u/sparc64/ -e 
 > s/arm.*/arm/ -e s/sa110/arm/ -e s/Power\ Macintosh/ppc/)
 >   KERNELPATH=kernel-$(shell echo $(KERNELRELEASE) | sed -e "s/-//g")
 > 
 >   CONFIG_SHELL := $(shell if [ -x "$$BASH" ]; then echo $$BASH; \

Just do
make ARCH=$ARCH CROSS_COMPILE=$CROSS_COMPILE
like we've always done when cross-compiling.

This patch is not needed.