Hi Sascha!
I'm playing with MAKEALL script to build as many defconfigs as possible.
My build environment is base on Debian Buster.
Debian Buster has cross compiler for PowerPC32.
Alas I have no success with debian powerpc-linux-gnu-gcc 8.2.0-2.
After
CROSS_COMPILE=powerpc-linux-gnu- ./MAKEALL -a ppc
the error message is:
powerpc-linux-gnu-gcc: error: unrecognized command line option ‘-mno-spe’; did you mean ‘-fno-see’?
powerpc-linux-gnu-gcc: error: unrecognized command line option ‘-mspe=no’; did you mean ‘-misel=no’?
make[2]: *** [/home/builduser/barebox/./Kbuild:40: arch/ppc/lib/asm-offsets.s] Error 1
make[1]: *** [/home/builduser/barebox/Makefile:832: prepare0] Error 2
make[1]: *** Waiting for unfinished jobs....
powerpc-linux-gnu-gcc: error: unrecognized command line option ‘-mno-spe’; did you mean ‘-fno-see’?
powerpc-linux-gnu-gcc: error: unrecognized command line option ‘-mspe=no’; did you mean ‘-misel=no’?
make[3]: *** [/home/builduser/barebox/scripts/Makefile.build:250: scripts/mod/empty.o] Error 1
make[3]: *** Waiting for unfinished jobs....
With this linux kernel-based patch ppc build has no fail.
diff --git a/arch/ppc/Makefile b/arch/ppc/Makefile
index 05ec2438a..e575e5923 100644
--- a/arch/ppc/Makefile
+++ b/arch/ppc/Makefile
@@ -1,7 +1,12 @@
CPPFLAGS += -ffixed-r14 -m32 \
-meabi -D __PPC__ -D CONFIG_PPC \
- -fno-strict-aliasing -mno-spe -mspe=no
+ -fno-strict-aliasing
+
+# No SPE instruction when building kernel
+# (We use all available options to help semi-broken compilers)
+CPPFLAGS += $(call cc-option,-mno-spe)
+CPPFLAGS += $(call cc-option,-mspe=no)
ifdef CONFIG_RELOCATABLE
CPPFLAGS += -fPIC -mrelocatable
I have no real powerpc experience to submit this patch.
Could you please comment this patch?
--
Best regards,
Antony Pavlov
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