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-rw-r--r--scripts/Kbuild.include3
-rw-r--r--scripts/Kconfig.include2
-rw-r--r--scripts/Makefile.build11
-rw-r--r--scripts/Makefile.kasan11
-rw-r--r--scripts/Makefile.lib2
-rw-r--r--scripts/Makefile.modpost86
-rw-r--r--scripts/coccinelle/api/atomic_as_refcounter.cocci1
-rwxr-xr-xscripts/gen_compile_commands.py4
-rwxr-xr-xscripts/headers_install.sh6
-rw-r--r--scripts/kconfig/confdata.c4
-rwxr-xr-xscripts/link-vmlinux.sh2
-rwxr-xr-xscripts/sphinx-pre-install118
-rwxr-xr-xscripts/tools-support-relr.sh16
13 files changed, 187 insertions, 79 deletions
diff --git a/scripts/Kbuild.include b/scripts/Kbuild.include
index 77c742fa4fb1..4b0432e095ae 100644
--- a/scripts/Kbuild.include
+++ b/scripts/Kbuild.include
@@ -190,9 +190,6 @@ echo-cmd = $(if $($(quiet)cmd_$(1)),\
# printing commands
cmd = @set -e; $(echo-cmd) $(cmd_$(1))
-# Add $(obj)/ for paths that are not absolute
-objectify = $(foreach o,$(1),$(if $(filter /%,$(o)),$(o),$(obj)/$(o)))
-
###
# if_changed - execute command if any prerequisite is newer than
# target, or command line has changed
diff --git a/scripts/Kconfig.include b/scripts/Kconfig.include
index 8a5c4d645eb1..4bbf4fc163a2 100644
--- a/scripts/Kconfig.include
+++ b/scripts/Kconfig.include
@@ -25,7 +25,7 @@ failure = $(if-success,$(1),n,y)
# $(cc-option,<flag>)
# Return y if the compiler supports <flag>, n otherwise
-cc-option = $(success,$(CC) -Werror $(1) -E -x c /dev/null -o /dev/null)
+cc-option = $(success,$(CC) -Werror $(CLANG_FLAGS) $(1) -E -x c /dev/null -o /dev/null)
# $(ld-option,<flag>)
# Return y if the linker supports <flag>, n otherwise
diff --git a/scripts/Makefile.build b/scripts/Makefile.build
index 0d434d0afc0b..2f66ed388d1c 100644
--- a/scripts/Makefile.build
+++ b/scripts/Makefile.build
@@ -52,6 +52,13 @@ ifndef obj
$(warning kbuild: Makefile.build is included improperly)
endif
+ifeq ($(MAKECMDGOALS)$(need-modorder),)
+ifneq ($(obj-m),)
+$(warning $(patsubst %.o,'%.ko',$(obj-m)) will not be built even though obj-m is specified.)
+$(warning You cannot use subdir-y/m to visit a module Makefile. Use obj-y/m instead.)
+endif
+endif
+
# ===========================================================================
ifneq ($(strip $(lib-y) $(lib-m) $(lib-)),)
@@ -487,7 +494,9 @@ targets += $(call intermediate_targets, .asn1.o, .asn1.c .asn1.h) \
PHONY += $(subdir-ym)
$(subdir-ym):
- $(Q)$(MAKE) $(build)=$@ need-builtin=$(if $(findstring $@,$(subdir-obj-y)),1)
+ $(Q)$(MAKE) $(build)=$@ \
+ need-builtin=$(if $(filter $@/built-in.a, $(subdir-obj-y)),1) \
+ need-modorder=$(if $(need-modorder),$(if $(filter $@/modules.order, $(modorder)),1))
# Add FORCE to the prequisites of a target to force it to be always rebuilt.
# ---------------------------------------------------------------------------
diff --git a/scripts/Makefile.kasan b/scripts/Makefile.kasan
index 6410bd22fe38..03757cc60e06 100644
--- a/scripts/Makefile.kasan
+++ b/scripts/Makefile.kasan
@@ -1,4 +1,9 @@
# SPDX-License-Identifier: GPL-2.0
+ifdef CONFIG_KASAN
+CFLAGS_KASAN_NOSANITIZE := -fno-builtin
+KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
+endif
+
ifdef CONFIG_KASAN_GENERIC
ifdef CONFIG_KASAN_INLINE
@@ -7,8 +12,6 @@ else
call_threshold := 0
endif
-KASAN_SHADOW_OFFSET ?= $(CONFIG_KASAN_SHADOW_OFFSET)
-
CFLAGS_KASAN_MINIMAL := -fsanitize=kernel-address
cc-param = $(call cc-option, -mllvm -$(1), $(call cc-option, --param $(1)))
@@ -45,7 +48,3 @@ CFLAGS_KASAN := -fsanitize=kernel-hwaddress \
$(instrumentation_flags)
endif # CONFIG_KASAN_SW_TAGS
-
-ifdef CONFIG_KASAN
-CFLAGS_KASAN_NOSANITIZE := -fno-builtin
-endif
diff --git a/scripts/Makefile.lib b/scripts/Makefile.lib
index 5241d0751eb0..41c50f9461e5 100644
--- a/scripts/Makefile.lib
+++ b/scripts/Makefile.lib
@@ -45,7 +45,6 @@ subdir-ym := $(sort $(subdir-y) $(subdir-m))
multi-used-y := $(sort $(foreach m,$(obj-y), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y))), $(m))))
multi-used-m := $(sort $(foreach m,$(obj-m), $(if $(strip $($(m:.o=-objs)) $($(m:.o=-y)) $($(m:.o=-m))), $(m))))
multi-used := $(multi-used-y) $(multi-used-m)
-single-used-m := $(sort $(filter-out $(multi-used-m),$(obj-m)))
# $(subdir-obj-y) is the list of objects in $(obj-y) which uses dir/ to
# tell kbuild to descend
@@ -91,7 +90,6 @@ lib-y := $(addprefix $(obj)/,$(lib-y))
subdir-obj-y := $(addprefix $(obj)/,$(subdir-obj-y))
real-obj-y := $(addprefix $(obj)/,$(real-obj-y))
real-obj-m := $(addprefix $(obj)/,$(real-obj-m))
-single-used-m := $(addprefix $(obj)/,$(single-used-m))
multi-used-m := $(addprefix $(obj)/,$(multi-used-m))
subdir-ym := $(addprefix $(obj)/,$(subdir-ym))
diff --git a/scripts/Makefile.modpost b/scripts/Makefile.modpost
index 6b19c1a4eae5..26e6574ecd08 100644
--- a/scripts/Makefile.modpost
+++ b/scripts/Makefile.modpost
@@ -38,12 +38,39 @@
# symbols in the final module linking stage
# KBUILD_MODPOST_NOFINAL can be set to skip the final link of modules.
# This is solely useful to speed up test compiles
-PHONY := _modpost
-_modpost: __modpost
+
+PHONY := __modpost
+__modpost:
include include/config/auto.conf
include scripts/Kbuild.include
+kernelsymfile := $(objtree)/Module.symvers
+modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
+
+MODPOST = scripts/mod/modpost \
+ $(if $(CONFIG_MODVERSIONS),-m) \
+ $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a) \
+ $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
+ $(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
+ $(if $(KBUILD_EXTMOD),$(addprefix -e ,$(KBUILD_EXTRA_SYMBOLS))) \
+ $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
+ $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \
+ $(if $(KBUILD_MODPOST_WARN),-w)
+
+ifdef MODPOST_VMLINUX
+
+__modpost: vmlinux.o
+
+quiet_cmd_modpost = MODPOST $@
+ cmd_modpost = $(MODPOST) $@
+
+PHONY += vmlinux.o
+vmlinux.o:
+ $(call cmd,modpost)
+
+else
+
# When building external modules load the Kbuild file to retrieve EXTRA_SYMBOLS info
ifneq ($(KBUILD_EXTMOD),)
@@ -58,50 +85,25 @@ endif
include scripts/Makefile.lib
-kernelsymfile := $(objtree)/Module.symvers
-modulesymfile := $(firstword $(KBUILD_EXTMOD))/Module.symvers
-
-modorder := $(if $(KBUILD_EXTMOD),$(KBUILD_EXTMOD)/)modules.order
-
-# Step 1), find all modules listed in modules.order
-ifdef CONFIG_MODULES
-modules := $(sort $(shell cat $(modorder)))
-endif
+# find all modules listed in modules.order
+modules := $(sort $(shell cat $(MODORDER)))
# Stop after building .o files if NOFINAL is set. Makes compile tests quicker
-_modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
-
-# Step 2), invoke modpost
-# Includes step 3,4
-modpost = scripts/mod/modpost \
- $(if $(CONFIG_MODVERSIONS),-m) \
- $(if $(CONFIG_MODULE_SRCVERSION_ALL),-a,) \
- $(if $(KBUILD_EXTMOD),-i,-o) $(kernelsymfile) \
- $(if $(KBUILD_EXTMOD),-I $(modulesymfile)) \
- $(if $(KBUILD_EXTRA_SYMBOLS), $(patsubst %, -e %,$(KBUILD_EXTRA_SYMBOLS))) \
- $(if $(KBUILD_EXTMOD),-o $(modulesymfile)) \
- $(if $(CONFIG_SECTION_MISMATCH_WARN_ONLY),,-E) \
- $(if $(KBUILD_MODPOST_WARN),-w)
-
-MODPOST_OPT=$(subst -i,-n,$(filter -i,$(MAKEFLAGS)))
+__modpost: $(if $(KBUILD_MODPOST_NOFINAL), $(modules:.ko:.o),$(modules))
+ @:
-# We can go over command line length here, so be careful.
-quiet_cmd_modpost = MODPOST $(words $(filter-out vmlinux FORCE, $^)) modules
- cmd_modpost = sed 's/ko$$/o/' $(modorder) | $(modpost) $(MODPOST_OPT) -s -T -
-
-PHONY += __modpost
-__modpost: $(modules:.ko=.o) FORCE
- $(call cmd,modpost) $(wildcard vmlinux)
+MODPOST += $(subst -i,-n,$(filter -i,$(MAKEFLAGS))) -s -T - $(wildcard vmlinux)
-quiet_cmd_kernel-mod = MODPOST $@
- cmd_kernel-mod = $(modpost) $@
+# We can go over command line length here, so be careful.
+quiet_cmd_modpost = MODPOST $(words $(modules)) modules
+ cmd_modpost = sed 's/ko$$/o/' $(MODORDER) | $(MODPOST)
-vmlinux.o: FORCE
- $(call cmd,kernel-mod)
+PHONY += modules-modpost
+modules-modpost:
+ $(call cmd,modpost)
# Declare generated files as targets for modpost
-$(modules:.ko=.mod.c): __modpost ;
-
+$(modules:.ko=.mod.c): modules-modpost
# Step 5), compile all *.mod.c files
@@ -145,10 +147,10 @@ FORCE:
# optimization, we don't need to read them if the target does not
# exist, we will rebuild anyway in that case.
-cmd_files := $(wildcard $(foreach f,$(sort $(targets)),$(dir $(f)).$(notdir $(f)).cmd))
+existing-targets := $(wildcard $(sort $(targets)))
+
+-include $(foreach f,$(existing-targets),$(dir $(f)).$(notdir $(f)).cmd)
-ifneq ($(cmd_files),)
- include $(cmd_files)
endif
.PHONY: $(PHONY)
diff --git a/scripts/coccinelle/api/atomic_as_refcounter.cocci b/scripts/coccinelle/api/atomic_as_refcounter.cocci
index 988120e0fd67..0f78d94abc35 100644
--- a/scripts/coccinelle/api/atomic_as_refcounter.cocci
+++ b/scripts/coccinelle/api/atomic_as_refcounter.cocci
@@ -1,3 +1,4 @@
+// SPDX-License-Identifier: GPL-2.0-only
// Check if refcount_t type and API should be used
// instead of atomic_t type when dealing with refcounters
//
diff --git a/scripts/gen_compile_commands.py b/scripts/gen_compile_commands.py
index 7915823b92a5..c458696ef3a7 100755
--- a/scripts/gen_compile_commands.py
+++ b/scripts/gen_compile_commands.py
@@ -21,9 +21,9 @@ _LINE_PATTERN = r'^cmd_[^ ]*\.o := (.* )([^ ]*\.c)$'
_VALID_LOG_LEVELS = ['DEBUG', 'INFO', 'WARNING', 'ERROR', 'CRITICAL']
# A kernel build generally has over 2000 entries in its compile_commands.json
-# database. If this code finds 500 or fewer, then warn the user that they might
+# database. If this code finds 300 or fewer, then warn the user that they might
# not have all the .cmd files, and they might need to compile the kernel.
-_LOW_COUNT_THRESHOLD = 500
+_LOW_COUNT_THRESHOLD = 300
def parse_arguments():
diff --git a/scripts/headers_install.sh b/scripts/headers_install.sh
index 47f6f3ea0771..bbaf29386995 100755
--- a/scripts/headers_install.sh
+++ b/scripts/headers_install.sh
@@ -23,6 +23,12 @@ TMPFILE=$OUTFILE.tmp
trap 'rm -f $OUTFILE $TMPFILE' EXIT
+# SPDX-License-Identifier with GPL variants must have "WITH Linux-syscall-note"
+if [ -n "$(sed -n -e "/SPDX-License-Identifier:.*GPL-/{/WITH Linux-syscall-note/!p}" $INFILE)" ]; then
+ echo "error: $INFILE: missing \"WITH Linux-syscall-note\" for SPDX-License-Identifier" >&2
+ exit 1
+fi
+
sed -E -e '
s/([[:space:](])(__user|__force|__iomem)[[:space:]]/\1/g
s/__attribute_const__([[:space:]]|$)/\1/g
diff --git a/scripts/kconfig/confdata.c b/scripts/kconfig/confdata.c
index 1134892599da..3569d2dec37c 100644
--- a/scripts/kconfig/confdata.c
+++ b/scripts/kconfig/confdata.c
@@ -848,6 +848,7 @@ int conf_write(const char *name)
const char *str;
char tmpname[PATH_MAX + 1], oldname[PATH_MAX + 1];
char *env;
+ int i;
bool need_newline = false;
if (!name)
@@ -930,6 +931,9 @@ next:
}
fclose(out);
+ for_all_symbols(i, sym)
+ sym->flags &= ~SYMBOL_WRITTEN;
+
if (*tmpname) {
if (is_same(name, tmpname)) {
conf_message("No change to %s", name);
diff --git a/scripts/link-vmlinux.sh b/scripts/link-vmlinux.sh
index a7124f895b24..915775eb2921 100755
--- a/scripts/link-vmlinux.sh
+++ b/scripts/link-vmlinux.sh
@@ -210,7 +210,7 @@ info LD vmlinux.o
modpost_link vmlinux.o
# modpost vmlinux.o to check for section mismatches
-${MAKE} -f "${srctree}/scripts/Makefile.modpost" vmlinux.o
+${MAKE} -f "${srctree}/scripts/Makefile.modpost" MODPOST_VMLINUX=1
info MODINFO modules.builtin.modinfo
${OBJCOPY} -j .modinfo -O binary vmlinux.o modules.builtin.modinfo
diff --git a/scripts/sphinx-pre-install b/scripts/sphinx-pre-install
index f230e65329a2..3b638c0e1a4f 100755
--- a/scripts/sphinx-pre-install
+++ b/scripts/sphinx-pre-install
@@ -83,6 +83,17 @@ sub check_missing(%)
foreach my $prog (sort keys %missing) {
my $is_optional = $missing{$prog};
+ # At least on some LTS distros like CentOS 7, texlive doesn't
+ # provide all packages we need. When such distros are
+ # detected, we have to disable PDF output.
+ #
+ # So, we need to ignore the packages that distros would
+ # need for LaTeX to work
+ if ($is_optional == 2 && !$pdf) {
+ $optional--;
+ next;
+ }
+
if ($is_optional) {
print "Warning: better to also install \"$prog\".\n";
} else {
@@ -333,10 +344,13 @@ sub give_debian_hints()
if ($pdf) {
check_missing_file("/usr/share/fonts/truetype/dejavu/DejaVuSans.ttf",
- "fonts-dejavu", 1);
+ "fonts-dejavu", 2);
+
+ check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+ "fonts-noto-cjk", 2);
}
- check_program("dvipng", 1) if ($pdf);
+ check_program("dvipng", 2) if ($pdf);
check_missing(\%map);
return if (!$need && !$optional);
@@ -363,6 +377,7 @@ sub give_redhat_hints()
my @fedora_tex_pkgs = (
"texlive-collection-fontsrecommended",
"texlive-collection-latex",
+ "texlive-xecjk",
"dejavu-sans-fonts",
"dejavu-serif-fonts",
"dejavu-sans-mono-fonts",
@@ -371,22 +386,45 @@ sub give_redhat_hints()
#
# Checks valid for RHEL/CentOS version 7.x.
#
- if (! $system_release =~ /Fedora/) {
+ my $old = 0;
+ my $rel;
+ $rel = $1 if ($system_release =~ /release\s+(\d+)/);
+
+ if (!($system_release =~ /Fedora/)) {
$map{"virtualenv"} = "python-virtualenv";
- }
- my $release;
+ if ($rel && $rel < 8) {
+ $old = 1;
+ $pdf = 0;
+
+ printf("Note: texlive packages on RHEL/CENTOS <= 7 are incomplete. Can't support PDF output\n");
+ printf("If you want to build PDF, please read:\n");
+ printf("\thttps://www.systutorials.com/241660/how-to-install-tex-live-on-centos-7-linux/\n");
+ }
+ } else {
+ if ($rel && $rel < 26) {
+ $old = 1;
+ }
+ }
+ if (!$rel) {
+ printf("Couldn't identify release number\n");
+ $old = 1;
+ $pdf = 0;
+ }
- $release = $1 if ($system_release =~ /Fedora\s+release\s+(\d+)/);
+ if ($pdf) {
+ check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
+ "google-noto-sans-cjk-ttc-fonts", 2);
+ }
- check_rpm_missing(\@fedora26_opt_pkgs, 1) if ($pdf && $release >= 26);
- check_rpm_missing(\@fedora_tex_pkgs, 1) if ($pdf);
- check_missing_tex(1) if ($pdf);
+ check_rpm_missing(\@fedora26_opt_pkgs, 2) if ($pdf && !$old);
+ check_rpm_missing(\@fedora_tex_pkgs, 2) if ($pdf);
+ check_missing_tex(2) if ($pdf);
check_missing(\%map);
return if (!$need && !$optional);
- if ($release >= 18) {
+ if (!$old) {
# dnf, for Fedora 18+
printf("You should run:\n\n\tsudo dnf install -y $install\n");
} else {
@@ -425,8 +463,15 @@ sub give_opensuse_hints()
"texlive-zapfding",
);
- check_rpm_missing(\@suse_tex_pkgs, 1) if ($pdf);
- check_missing_tex(1) if ($pdf);
+ $map{"latexmk"} = "texlive-latexmk-bin";
+
+ # FIXME: add support for installing CJK fonts
+ #
+ # I tried hard, but was unable to find a way to install
+ # "Noto Sans CJK SC" on openSUSE
+
+ check_rpm_missing(\@suse_tex_pkgs, 2) if ($pdf);
+ check_missing_tex(2) if ($pdf);
check_missing(\%map);
return if (!$need && !$optional);
@@ -450,7 +495,14 @@ sub give_mageia_hints()
"texlive-fontsextra",
);
- check_rpm_missing(\@tex_pkgs, 1) if ($pdf);
+ $map{"latexmk"} = "texlive-collection-basic";
+
+ if ($pdf) {
+ check_missing_file("/usr/share/fonts/google-noto-cjk/NotoSansCJK-Regular.ttc",
+ "google-noto-sans-cjk-ttc-fonts", 2);
+ }
+
+ check_rpm_missing(\@tex_pkgs, 2) if ($pdf);
check_missing(\%map);
return if (!$need && !$optional);
@@ -473,7 +525,13 @@ sub give_arch_linux_hints()
"texlive-latexextra",
"ttf-dejavu",
);
- check_pacman_missing(\@archlinux_tex_pkgs, 1) if ($pdf);
+ check_pacman_missing(\@archlinux_tex_pkgs, 2) if ($pdf);
+
+ if ($pdf) {
+ check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJK-Regular.ttc",
+ "noto-fonts-cjk", 2);
+ }
+
check_missing(\%map);
return if (!$need && !$optional);
@@ -492,15 +550,31 @@ sub give_gentoo_hints()
);
check_missing_file("/usr/share/fonts/dejavu/DejaVuSans.ttf",
- "media-fonts/dejavu", 1) if ($pdf);
+ "media-fonts/dejavu", 2) if ($pdf);
+
+ if ($pdf) {
+ check_missing_file("/usr/share/fonts/noto-cjk/NotoSansCJKsc-Regular.otf",
+ "media-fonts/noto-cjk", 2);
+ }
check_missing(\%map);
return if (!$need && !$optional);
printf("You should run:\n\n");
- printf("\tsudo su -c 'echo \"media-gfx/imagemagick svg png\" > /etc/portage/package.use/imagemagick'\n");
- printf("\tsudo su -c 'echo \"media-gfx/graphviz cairo pdf\" > /etc/portage/package.use/graphviz'\n");
+
+ my $imagemagick = "media-gfx/imagemagick svg png";
+ my $cairo = "media-gfx/graphviz cairo pdf";
+ my $portage_imagemagick = "/etc/portage/package.use/imagemagick";
+ my $portage_cairo = "/etc/portage/package.use/graphviz";
+
+ if (qx(cat $portage_imagemagick) ne "$imagemagick\n") {
+ printf("\tsudo su -c 'echo \"$imagemagick\" > $portage_imagemagick'\n")
+ }
+ if (qx(cat $portage_cairo) ne "$cairo\n") {
+ printf("\tsudo su -c 'echo \"$cairo\" > $portage_cairo'\n");
+ }
+
printf("\tsudo emerge --ask $install\n");
}
@@ -560,7 +634,7 @@ sub check_distros()
my %map = (
"sphinx-build" => "sphinx"
);
- check_missing_tex(1) if ($pdf);
+ check_missing_tex(2) if ($pdf);
check_missing(\%map);
print "I don't know distro $system_release.\n";
print "So, I can't provide you a hint with the install procedure.\n";
@@ -589,11 +663,13 @@ sub check_needs()
check_program("make", 0);
check_program("gcc", 0);
check_python_module("sphinx_rtd_theme", 1) if (!$virtualenv);
- check_program("xelatex", 1) if ($pdf);
check_program("dot", 1);
check_program("convert", 1);
- check_program("rsvg-convert", 1) if ($pdf);
- check_program("latexmk", 1) if ($pdf);
+
+ # Extra PDF files - should use 2 for is_optional
+ check_program("xelatex", 2) if ($pdf);
+ check_program("rsvg-convert", 2) if ($pdf);
+ check_program("latexmk", 2) if ($pdf);
check_distros();
diff --git a/scripts/tools-support-relr.sh b/scripts/tools-support-relr.sh
new file mode 100755
index 000000000000..97a2c844a95e
--- /dev/null
+++ b/scripts/tools-support-relr.sh
@@ -0,0 +1,16 @@
+#!/bin/sh -eu
+# SPDX-License-Identifier: GPL-2.0
+
+tmp_file=$(mktemp)
+trap "rm -f $tmp_file.o $tmp_file $tmp_file.bin" EXIT
+
+cat << "END" | "$CC" -c -x c - -o $tmp_file.o >/dev/null 2>&1
+void *p = &p;
+END
+"$LD" $tmp_file.o -shared -Bsymbolic --pack-dyn-relocs=relr -o $tmp_file
+
+# Despite printing an error message, GNU nm still exits with exit code 0 if it
+# sees a relr section. So we need to check that nothing is printed to stderr.
+test -z "$("$NM" $tmp_file 2>&1 >/dev/null)"
+
+"$OBJCOPY" -O binary $tmp_file $tmp_file.bin