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https://github.com/team-infusion-developers/android_kernel_samsung_msm8976.git
synced 2024-09-21 03:43:03 +00:00
kbuild: Fix gcc -x syntax
The correct syntax for gcc -x is "gcc -x assembler", not "gcc -xassembler". Even though the latter happens to work, the former is what is documented in the manual page and thus what gcc wrappers such as icecream do expect. This isn't a cosmetic change. The missing space prevents icecream from recognizing compilation tasks it can't handle, leading to silent kernel miscompilations. Besides me, credits go to Michael Matz and Dirk Mueller for investigating the miscompilation issue and tracking it down to this incorrect -x parameter syntax. Signed-off-by: Jean Delvare <jdelvare@suse.de> Acked-by: Ingo Molnar <mingo@kernel.org> Cc: stable@vger.kernel.org Cc: Bernhard Walle <bernhard@bwalle.de> Cc: Michal Marek <mmarek@suse.cz> Cc: Ralf Baechle <ralf@linux-mips.org> Signed-off-by: Michal Marek <mmarek@suse.cz>
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@ -225,7 +225,7 @@ KBUILD_CPPFLAGS += -DDATAOFFSET=$(if $(dataoffset-y),$(dataoffset-y),0)
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LDFLAGS += -m $(ld-emul)
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LDFLAGS += -m $(ld-emul)
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ifdef CONFIG_MIPS
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ifdef CONFIG_MIPS
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CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -xc /dev/null | \
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CHECKFLAGS += $(shell $(CC) $(KBUILD_CFLAGS) -dM -E -x c /dev/null | \
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egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
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egrep -vw '__GNUC_(|MINOR_|PATCHLEVEL_)_' | \
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sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
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sed -e "s/^\#define /-D'/" -e "s/ /'='/" -e "s/$$/'/")
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ifdef CONFIG_64BIT
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ifdef CONFIG_64BIT
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@ -104,7 +104,7 @@ obj-$(CONFIG_MIPS_MACHINE) += mips_machine.o
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obj-$(CONFIG_OF) += prom.o
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obj-$(CONFIG_OF) += prom.o
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CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -xc /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
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CFLAGS_cpu-bugs64.o = $(shell if $(CC) $(KBUILD_CFLAGS) -Wa,-mdaddi -c -o /dev/null -x c /dev/null >/dev/null 2>&1; then echo "-DHAVE_AS_SET_DADDI"; fi)
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obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT) += 8250-platform.o
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obj-$(CONFIG_HAVE_STD_PC_SERIAL_PORT) += 8250-platform.o
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@ -88,7 +88,7 @@ endif
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ifdef CONFIG_X86_X32
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ifdef CONFIG_X86_X32
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x32_ld_ok := $(call try-run,\
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x32_ld_ok := $(call try-run,\
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/bin/echo -e '1: .quad 1b' | \
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/bin/echo -e '1: .quad 1b' | \
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$(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" - && \
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$(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" - && \
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$(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \
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$(OBJCOPY) -O elf32-x86-64 "$$TMP" "$$TMPO" && \
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$(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n)
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$(LD) -m elf32_x86_64 "$$TMPO" -o "$$TMP",y,n)
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ifeq ($(x32_ld_ok),y)
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ifeq ($(x32_ld_ok),y)
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@ -98,24 +98,24 @@ try-run = $(shell set -e; \
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# Usage: cflags-y += $(call as-option,-Wa$(comma)-isa=foo,)
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# Usage: cflags-y += $(call as-option,-Wa$(comma)-isa=foo,)
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as-option = $(call try-run,\
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as-option = $(call try-run,\
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$(CC) $(KBUILD_CFLAGS) $(1) -c -xassembler /dev/null -o "$$TMP",$(1),$(2))
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$(CC) $(KBUILD_CFLAGS) $(1) -c -x assembler /dev/null -o "$$TMP",$(1),$(2))
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# as-instr
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# as-instr
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# Usage: cflags-y += $(call as-instr,instr,option1,option2)
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# Usage: cflags-y += $(call as-instr,instr,option1,option2)
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as-instr = $(call try-run,\
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as-instr = $(call try-run,\
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printf "%b\n" "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -xassembler -o "$$TMP" -,$(2),$(3))
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printf "%b\n" "$(1)" | $(CC) $(KBUILD_AFLAGS) -c -x assembler -o "$$TMP" -,$(2),$(3))
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# cc-option
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# cc-option
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# Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
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# Usage: cflags-y += $(call cc-option,-march=winchip-c6,-march=i586)
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cc-option = $(call try-run,\
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cc-option = $(call try-run,\
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$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -xc /dev/null -o "$$TMP",$(1),$(2))
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$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",$(1),$(2))
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# cc-option-yn
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# cc-option-yn
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# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
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# Usage: flag := $(call cc-option-yn,-march=winchip-c6)
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cc-option-yn = $(call try-run,\
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cc-option-yn = $(call try-run,\
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$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -xc /dev/null -o "$$TMP",y,n)
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$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) $(1) -c -x c /dev/null -o "$$TMP",y,n)
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# cc-option-align
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# cc-option-align
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# Prefix align with either -falign or -malign
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# Prefix align with either -falign or -malign
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@ -125,7 +125,7 @@ cc-option-align = $(subst -functions=0,,\
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# cc-disable-warning
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# cc-disable-warning
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# Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
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# Usage: cflags-y += $(call cc-disable-warning,unused-but-set-variable)
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cc-disable-warning = $(call try-run,\
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cc-disable-warning = $(call try-run,\
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$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -xc /dev/null -o "$$TMP",-Wno-$(strip $(1)))
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$(CC) $(KBUILD_CPPFLAGS) $(KBUILD_CFLAGS) -W$(strip $(1)) -c -x c /dev/null -o "$$TMP",-Wno-$(strip $(1)))
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# cc-version
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# cc-version
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# Usage gcc-ver := $(call cc-version)
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# Usage gcc-ver := $(call cc-version)
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@ -143,7 +143,7 @@ cc-ifversion = $(shell [ $(call cc-version, $(CC)) $(1) $(2) ] && echo $(3))
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# cc-ldoption
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# cc-ldoption
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# Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
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# Usage: ldflags += $(call cc-ldoption, -Wl$(comma)--hash-style=both)
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cc-ldoption = $(call try-run,\
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cc-ldoption = $(call try-run,\
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$(CC) $(1) -nostdlib -xc /dev/null -o "$$TMP",$(1),$(2))
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$(CC) $(1) -nostdlib -x c /dev/null -o "$$TMP",$(1),$(2))
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# ld-option
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# ld-option
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# Usage: LDFLAGS += $(call ld-option, -X)
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# Usage: LDFLAGS += $(call ld-option, -X)
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@ -22,10 +22,10 @@ if [ ${#compiler} -eq 0 ]; then
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exit 1
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exit 1
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fi
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fi
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MAJOR=$(echo __GNUC__ | $compiler -E -xc - | tail -n 1)
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MAJOR=$(echo __GNUC__ | $compiler -E -x c - | tail -n 1)
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MINOR=$(echo __GNUC_MINOR__ | $compiler -E -xc - | tail -n 1)
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MINOR=$(echo __GNUC_MINOR__ | $compiler -E -x c - | tail -n 1)
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if [ "x$with_patchlevel" != "x" ] ; then
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if [ "x$with_patchlevel" != "x" ] ; then
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PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -xc - | tail -n 1)
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PATCHLEVEL=$(echo __GNUC_PATCHLEVEL__ | $compiler -E -x c - | tail -n 1)
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printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
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printf "%02d%02d%02d\\n" $MAJOR $MINOR $PATCHLEVEL
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else
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else
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printf "%02d%02d\\n" $MAJOR $MINOR
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printf "%02d%02d\\n" $MAJOR $MINOR
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@ -1,6 +1,6 @@
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#!/bin/sh
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#!/bin/sh
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echo "int foo(void) { char X[200]; return 3; }" | $* -S -xc -c -O0 -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
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echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
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if [ "$?" -eq "0" ] ; then
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if [ "$?" -eq "0" ] ; then
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echo y
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echo y
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else
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else
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@ -1,6 +1,6 @@
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#!/bin/sh
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#!/bin/sh
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echo "int foo(void) { char X[200]; return 3; }" | $* -S -xc -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
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echo "int foo(void) { char X[200]; return 3; }" | $* -S -x c -c -O0 -mcmodel=kernel -fstack-protector - -o - 2> /dev/null | grep -q "%gs"
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if [ "$?" -eq "0" ] ; then
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if [ "$?" -eq "0" ] ; then
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echo y
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echo y
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else
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else
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@ -1,6 +1,6 @@
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#!/bin/sh
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#!/bin/sh
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# Needed for systems without gettext
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# Needed for systems without gettext
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$* -xc -o /dev/null - > /dev/null 2>&1 << EOF
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$* -x c -o /dev/null - > /dev/null 2>&1 << EOF
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#include <libintl.h>
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#include <libintl.h>
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int main()
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int main()
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{
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{
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@ -38,7 +38,7 @@ trap "rm -f $tmp" 0 1 2 3 15
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# Check if we can link to ncurses
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# Check if we can link to ncurses
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check() {
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check() {
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$cc -xc - -o $tmp 2>/dev/null <<'EOF'
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$cc -x c - -o $tmp 2>/dev/null <<'EOF'
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#include CURSES_LOC
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#include CURSES_LOC
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main() {}
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main() {}
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EOF
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EOF
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@ -62,7 +62,7 @@ ifeq ($(ARCH),x86_64)
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ARCH := x86
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ARCH := x86
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IS_X86_64 := 0
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IS_X86_64 := 0
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ifeq (, $(findstring m32,$(EXTRA_CFLAGS)))
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ifeq (, $(findstring m32,$(EXTRA_CFLAGS)))
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IS_X86_64 := $(shell echo __x86_64__ | ${CC} -E -xc - | tail -n 1)
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IS_X86_64 := $(shell echo __x86_64__ | ${CC} -E -x c - | tail -n 1)
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endif
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endif
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ifeq (${IS_X86_64}, 1)
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ifeq (${IS_X86_64}, 1)
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RAW_ARCH := x86_64
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RAW_ARCH := x86_64
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@ -111,7 +111,7 @@ GMO_FILES = ${shell for HLANG in ${LANGUAGES}; do echo $(OUTPUT)po/$$HLANG.gmo;
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export CROSS CC AR STRIP RANLIB CFLAGS LDFLAGS LIB_OBJS
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export CROSS CC AR STRIP RANLIB CFLAGS LDFLAGS LIB_OBJS
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# check if compiler option is supported
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# check if compiler option is supported
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cc-supports = ${shell if $(CC) ${1} -S -o /dev/null -xc /dev/null > /dev/null 2>&1; then echo "$(1)"; fi;}
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cc-supports = ${shell if $(CC) ${1} -S -o /dev/null -x c /dev/null > /dev/null 2>&1; then echo "$(1)"; fi;}
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# use '-Os' optimization if available, else use -O2
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# use '-Os' optimization if available, else use -O2
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OPTIMIZATION := $(call cc-supports,-Os,-O2)
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OPTIMIZATION := $(call cc-supports,-Os,-O2)
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