Hi Helge, On Sat, May 9, 2020 at 6:46 AM Helge Deller <del...@gmx.de> wrote: > > * Masahiro Yamada <masahi...@kernel.org>: > > On Sat, Apr 25, 2020 at 2:47 PM Masahiro Yamada <masahi...@kernel.org> > > wrote: > > > > > > 'make ARCH=parisc clean' emits a tons of error messages as follows: > > > > > > $ make ARCH=parisc clean > > > gcc: error: unrecognized command line option '-mno-space-regs' > > > gcc: error: unrecognized command line option '-mfast-indirect-calls'; > > > did you mean '-mforce-indirect-call'? > > > gcc: error: unrecognized command line option '-mdisable-fpregs' > > > gcc: error: missing argument to '-Wframe-larger-than=' > > > gcc: error: unrecognized command line option '-mno-space-regs' > > > gcc: error: unrecognized command line option '-mfast-indirect-calls'; > > > did you mean '-mforce-indirect-call'? > > > gcc: error: unrecognized command line option '-mdisable-fpregs' > > > gcc: error: missing argument to '-Wframe-larger-than=' > > > ... > > > > > > You can supporess them except '-Wframe-larger-than' by setting correct > > > CROSS_COMPILE=, but we should not require any compiler for cleaning. > > > > > > This $(shell ...) is evaluated so many times because LIBGCC is exported. > > > Use the ':=' operator to evaluate it just once, and sink the stderr. > > > > > > > Applied to linux-kbuild. > > That patch breaks then building the boot loader/compressor: > ... > hppa-linux-gnu-ld -X -e startup --as-needed -T > arch/parisc/boot/compressed/vmlinux.lds arch/parisc/boot/compressed/head.o > arch/parisc/boot/compressed/real2.o arch/parisc/boot/compressed/firmware.o > arch/parisc/boot/compressed/misc.o arch/parisc/boot/compressed/piggy.o -o > arch/parisc/boot/compressed/vmlinux > hppa-linux-gnu-ld: arch/parisc/boot/compressed/misc.o: in function `dec_vli': > (.text+0x104): undefined reference to `__ashldi3' > hppa-linux-gnu-ld: arch/parisc/boot/compressed/misc.o: in function `lzma_len': > (.text+0x2b0): undefined reference to `$$mulI' > hppa-linux-gnu-ld: (.text+0x344): undefined reference to `$$mulI' > hppa-linux-gnu-ld: (.text+0x3f8): undefined reference to `$$mulI' > > > The patch below works, but I wonder if it's possible to avoid > to examine LIBGCC twice....? > > Helge
Sorry for the breakage. How about moving LIBGCC below ? diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile index d82787da43cd..6b37aa37a365 100644 --- a/arch/parisc/Makefile +++ b/arch/parisc/Makefile @@ -21,8 +21,6 @@ KBUILD_IMAGE := vmlinuz NM = sh $(srctree)/arch/parisc/nm CHECKFLAGS += -D__hppa__=1 -LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name 2>/dev/null) -export LIBGCC ifdef CONFIG_64BIT UTS_MACHINE := parisc64 @@ -114,6 +112,10 @@ KBUILD_CFLAGS += $(cflags-y) kernel-y := mm/ kernel/ math-emu/ core-y += $(addprefix arch/parisc/, $(kernel-y)) + +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name 2>/dev/null) +export LIBGCC + libs-y += arch/parisc/lib/ $(LIBGCC) drivers-$(CONFIG_OPROFILE) += arch/parisc/oprofile/ > > diff --git a/arch/parisc/Makefile b/arch/parisc/Makefile > index 628cd8bb7ad8..aeea20abbf01 100644 > --- a/arch/parisc/Makefile > +++ b/arch/parisc/Makefile > @@ -21,8 +21,7 @@ KBUILD_IMAGE := vmlinuz > > NM = sh $(srctree)/arch/parisc/nm > CHECKFLAGS += -D__hppa__=1 > -LIBGCC = $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) > -export LIBGCC > +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) > > ifdef CONFIG_64BIT > UTS_MACHINE := parisc64 > diff --git a/arch/parisc/boot/compressed/Makefile > b/arch/parisc/boot/compressed/Makefile > index 1e5879c6a752..b008cf1b5c1e 100644 > --- a/arch/parisc/boot/compressed/Makefile > +++ b/arch/parisc/boot/compressed/Makefile > @@ -22,6 +22,8 @@ ifndef CONFIG_64BIT > KBUILD_CFLAGS += -mfast-indirect-calls > endif > > +LIBGCC := $(shell $(CC) $(KBUILD_CFLAGS) -print-libgcc-file-name) > + > OBJECTS += $(obj)/head.o $(obj)/real2.o $(obj)/firmware.o $(obj)/misc.o > $(obj)/piggy.o > > LDFLAGS_vmlinux := -X -e startup --as-needed -T -- Best Regards Masahiro Yamada
