[ptxdist] [PATCH v2 1/4] config/setup: make reproducible builds configurable

[ptxdist] [PATCH v2 1/4] config/setup: make reproducible builds configurable

[Baeuerle, Florian]

Some of ptxdist's packages use SOURCE_DATE_EPOCH to make the build
results predictable. Make this behaviour more configurable via a newly
introduced ptxdist setup options.

By default, this will set SOURCE_DATE_EPOCH to the year and month of the
used OSELAS Toolchain version. If the used toolchain is not an
OSELAS-Toolchain, the PTXdist version is used as a fallback.

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 config/setup/Kconfig                 | 47 ++++++++++++++++++++++++++
 config/setup/ptxdistrc.default       |  5 +++
 scripts/lib/ptxd_lib_reproducible.sh | 49 +++++++++++++++++++++++++++-
 3 files changed, 100 insertions(+), 1 deletion(-)

diff --git a/config/setup/Kconfig b/config/setup/Kconfig
index 990da03a1..10adb970d 100644
--- a/config/setup/Kconfig
+++ b/config/setup/Kconfig
@@ -264,6 +264,53 @@ config SETUP_DISABLE_LOCAL_CHECK
 	  may fail under certain circumstances.
 	  Disable this check at your own risk.
 
+config SETUP_DISABLE_REPRODUCIBLE
+	bool
+	prompt "disable reproducible builds"
+	help
+	  By default ptxdist will build some packages in a
+	  reproducible way by injecting fake timestamps, user and
+	  host name into the build.
+
+if !SETUP_DISABLE_REPRODUCIBLE
+
+choice
+	prompt "Fake timestamps source"
+	default SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
+
+	config SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
+		bool
+		prompt "toolchain version"
+
+	config SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
+		bool
+		prompt "ptxdist version"
+
+	config SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
+		bool
+		prompt "custom timestamp"
+
+endchoice
+
+config SETUP_REPRODUCIBLE_TIMESTAMP
+	string
+	default "toolchain" if SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
+	default "ptxdist" if SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
+	default "custom" if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
+
+if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
+
+config SETUP_REPRODUCIBLE_TIMESTAMP_STRING
+	string
+	prompt "Fake timestamp"
+	default "2018-11-01 UTC"
+	help
+	  Supply a custom fake timestamp to be injected to the build.
+	  The timestamp is passed to 'date --date'.
+
+endif
+endif
+
 config SETUP_ENV_WHITELIST
 	string "environment variable whitelist (space separated)"
 	help
diff --git a/config/setup/ptxdistrc.default b/config/setup/ptxdistrc.default
index 397b78eb7..8aa7dcc9a 100644
--- a/config/setup/ptxdistrc.default
+++ b/config/setup/ptxdistrc.default
@@ -61,6 +61,11 @@ PTXCONF_SETUP_JAVA_SDK="/usr/lib/jvm/default-java"
 # Developer Options 
 #
 # PTXCONF_SETUP_DISABLE_LOCAL_CHECK is not set
+# PTXCONF_SETUP_DISABLE_REPRODUCIBLE is not set
+PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN=y
+# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST is not set
+# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM is not set
+PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP="toolchain"
 PTXCONF_SETUP_ENV_WHITELIST=""
 # PTXCONF_SETUP_COMMON_CACHE is not set
 # PTXCONF_SETUP_GEN_DEP_TREE is not set
diff --git a/scripts/lib/ptxd_lib_reproducible.sh b/scripts/lib/ptxd_lib_reproducible.sh
index e2e664ba8..98c528ac2 100644
--- a/scripts/lib/ptxd_lib_reproducible.sh
+++ b/scripts/lib/ptxd_lib_reproducible.sh
@@ -8,8 +8,55 @@
 # see the README file.
 #
 
+ptxd_timestamp_ptxdist() {
+    ptxd_reply="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC"
+}
+
+ptxd_timestamp_toolchain() {
+    local oselas_ptxconfig="$(readlink -f "${PTXDIST_TOOLCHAIN}/ptxconfig")"
+
+    if [ -e "${oselas_ptxconfig}" ]; then
+        local oselas_version="$(source "${oselas_ptxconfig}" && echo ${PTXCONF_CONFIGFILE_VERSION})"
+        local orig_IFS="${IFS}"
+        local IFS="."
+        set -- ${oselas_version}
+        IFS="${orig_IFS}"
+        ptxd_reply="${1}-${2}-01 UTC"
+    else
+        echo "${PTXDIST_LOG_PROMPT}warning: cannot deduce timestamp from toolchain, falling back to PTXdist version for reproducible timestamp"
+        ptxd_timestamp_ptxdist
+    fi
+}
+
+ptxd_timestamp_custom() {
+    local ts="${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_STRING}"
+
+    if ! date --date "${ts}" > /dev/null 2>&1; then
+        echo "${PTXDIST_LOG_PROMPT}warning: '${ts}' is not a valid timestamp, falling back to toolchain for reproducible timestamp"
+        ptxd_timestamp_toolchain
+    else
+        ptxd_reply="${ts}"
+    fi
+}
+
 ptxd_lib_reproducible() {
-    SOURCE_DATE_EPOCH="$(echo $(date --date="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC" "+%s"))"
+    if [ "${PTXCONF_SETUP_DISABLE_REPRODUCIBLE}" = "y" ]; then
+        ptxd_timestamp_ptxdist
+    else
+        case "${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP}" in
+            "custom")
+                ptxd_timestamp_custom
+                ;;
+            "ptxdist")
+                ptxd_timestamp_ptxdist
+                ;;
+            *)
+                ptxd_timestamp_toolchain
+                ;;
+        esac
+    fi
+
+    SOURCE_DATE_EPOCH="$(echo $(date --date="${ptxd_reply}" "+%s"))"
     export SOURCE_DATE_EPOCH
 
     PTXDIST_BUILD_TIMESTAMP="$(echo $(date --utc --date @${SOURCE_DATE_EPOCH} +%Y-%m-%dT%H:%M+0000))"
-- 
2.19.2

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[ptxdist] [PATCH v2 2/4] barebox: depend on HOST_LZOP

[Baeuerle, Florian]

The version shipped by ptxdist allows us to override the modification
time in the lzop headers.

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 platforms/barebox.in | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/platforms/barebox.in b/platforms/barebox.in
index 645366e93..46ab32a07 100644
--- a/platforms/barebox.in
+++ b/platforms/barebox.in
@@ -12,7 +12,7 @@ menuconfig BAREBOX
 	select HOST_LIBUSB if BAREBOX_NEEDS_HOST_LIBUSB
 	select HOST_OPENSSL if BAREBOX_NEEDS_HOST_OPENSSL
 	select HOST_IMX_CST if BAREBOX_NEEDS_HOST_IMX_CST
-	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP
+	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP || !SETUP_DISABLE_REPRODUCIBLE
 	prompt "barebox                       "
 	bool
 	help
-- 
2.19.2

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[ptxdist] [PATCH v2 3/4] barebox: add support for reproducible build

[Baeuerle, Florian]

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 rules/barebox.make | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/rules/barebox.make b/rules/barebox.make
index 4018dd697..4e8ffebf9 100644
--- a/rules/barebox.make
+++ b/rules/barebox.make
@@ -47,6 +47,15 @@ BAREBOX_WRAPPER_BLACKLIST := \
 BAREBOX_CONF_OPT := $(call barebox-opts, BAREBOX)
 BAREBOX_MAKE_OPT := $(BAREBOX_CONF_OPT)
 
+ifndef PTXCONF_SETUP_DISABLE_REPRODUCIBLE
+BAREBOX_MAKE_ENV := $(BAREBOX_MAKE_ENV) \
+	SOURCE_DATE_EPOCH="$(SOURCE_DATE_EPOCH)" \
+	KBUILD_BUILD_TIMESTAMP="$(shell date --utc --date @$(SOURCE_DATE_EPOCH))" \
+	KBUILD_BUILD_VERSION="0" \
+	KBUILD_BUILD_USER="ptxdist" \
+	KBUILD_BUILD_HOST="ptxdist"
+endif
+
 BAREBOX_TAGS_OPT := TAGS tags cscope
 
 ifdef PTXCONF_BAREBOX
-- 
2.19.2

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[ptxdist] [PATCH v2 4/4] barebox_mlo: add support for reproducible build

[Baeuerle, Florian]

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 rules/barebox_mlo.make | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/rules/barebox_mlo.make b/rules/barebox_mlo.make
index 368da0e8f..2f1da0ca7 100644
--- a/rules/barebox_mlo.make
+++ b/rules/barebox_mlo.make
@@ -39,7 +39,6 @@ BAREBOX_MLO_WRAPPER_BLACKLIST := \
 	TARGET_BUILD_ID
 
 BAREBOX_MLO_PATH	:= PATH=$(CROSS_PATH)
-BAREBOX_MLO_CONF_ENV	:= KCONFIG_NOTIMESTAMP=1
 BAREBOX_MLO_CONF_TOOL	:= kconfig
 BAREBOX_MLO_CONF_OPT	:= \
 			V=$(PTXDIST_VERBOSE) \
@@ -49,6 +48,15 @@ BAREBOX_MLO_CONF_OPT	:= \
 
 BAREBOX_MLO_MAKE_OPT	:= $(BAREBOX_MLO_CONF_OPT)
 
+ifndef PTXCONF_SETUP_DISABLE_REPRODUCIBLE
+BAREBOX_MLO_MAKE_ENV := $(BAREBOX_MLO_MAKE_ENV) \
+	SOURCE_DATE_EPOCH="$(SOURCE_DATE_EPOCH)" \
+	KBUILD_BUILD_TIMESTAMP="$(shell date --utc --date @$(SOURCE_DATE_EPOCH))" \
+	KBUILD_BUILD_VERSION="0" \
+	KBUILD_BUILD_USER="ptxdist" \
+	KBUILD_BUILD_HOST="ptxdist"
+endif
+
 ifdef PTXCONF_BAREBOX_MLO
 $(BAREBOX_MLO_CONFIG):
 	@echo
-- 
2.19.2

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Re: [ptxdist] [PATCH v2 2/4] barebox: depend on HOST_LZOP

[Michael Olbrich]

On Wed, Dec 12, 2018 at 02:52:54PM +0000, Baeuerle, Florian wrote:
> The version shipped by ptxdist allows us to override the modification
> time in the lzop headers.
> 
> Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
> ---
>  platforms/barebox.in | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/platforms/barebox.in b/platforms/barebox.in
> index 645366e93..46ab32a07 100644
> --- a/platforms/barebox.in
> +++ b/platforms/barebox.in
> @@ -12,7 +12,7 @@ menuconfig BAREBOX
>  	select HOST_LIBUSB if BAREBOX_NEEDS_HOST_LIBUSB
>  	select HOST_OPENSSL if BAREBOX_NEEDS_HOST_OPENSSL
>  	select HOST_IMX_CST if BAREBOX_NEEDS_HOST_IMX_CST
> -	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP
> +	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP || !SETUP_DISABLE_REPRODUCIBLE

This does not work. You will need to enable BAREBOX_NEEDS_HOST_LZOP
manually if lzop is used by barebox.

Michael

>  	prompt "barebox                       "
>  	bool
>  	help
> -- 
> 2.19.2
> 
> _______________________________________________
> ptxdist mailing list
> ptxdist@pengutronix.de

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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Re: [ptxdist] [PATCH v2 2/4] barebox: depend on HOST_LZOP

[Baeuerle, Florian]

Am Donnerstag, den 13.12.2018, 12:16 +0100 schrieb Michael Olbrich:
> On Wed, Dec 12, 2018 at 02:52:54PM +0000, Baeuerle, Florian wrote:
> > The version shipped by ptxdist allows us to override the modification
> > time in the lzop headers.
> > 
> > Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
> > ---
> >  platforms/barebox.in | 2 +-
> >  1 file changed, 1 insertion(+), 1 deletion(-)
> > 
> > diff --git a/platforms/barebox.in b/platforms/barebox.in
> > index 645366e93..46ab32a07 100644
> > --- a/platforms/barebox.in
> > +++ b/platforms/barebox.in
> > @@ -12,7 +12,7 @@ menuconfig BAREBOX
> >  	select HOST_LIBUSB if BAREBOX_NEEDS_HOST_LIBUSB
> >  	select HOST_OPENSSL if BAREBOX_NEEDS_HOST_OPENSSL
> >  	select HOST_IMX_CST if BAREBOX_NEEDS_HOST_IMX_CST
> > -	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP
> > +	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP ||
> > !SETUP_DISABLE_REPRODUCIBLE
> 
> This does not work. You will need to enable BAREBOX_NEEDS_HOST_LZOP
> manually if lzop is used by barebox.

Oops, you're right – in the platformconfig menu all SETUP_ symbols seem to be
undefined. Anyway, it's probably a bad idea to depend on regenerating a
platformconfig when the user en/disables user properties.

Can I just make barebox unconditionally depend on HOST_LZOP?

Other suggestions?


- Florian

> 
> Michael
> 
> >  	prompt "barebox                       "
> >  	bool
> >  	help
> > -- 
> > 2.19.2
> > 
> > _______________________________________________
> > ptxdist mailing list
> > ptxdist@pengutronix.de
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Re: [ptxdist] [PATCH v2 2/4] barebox: depend on HOST_LZOP

[Michael Olbrich]

On Thu, Dec 13, 2018 at 01:02:50PM +0000, Baeuerle, Florian wrote:
> Am Donnerstag, den 13.12.2018, 12:16 +0100 schrieb Michael Olbrich:
> > On Wed, Dec 12, 2018 at 02:52:54PM +0000, Baeuerle, Florian wrote:
> > > The version shipped by ptxdist allows us to override the modification
> > > time in the lzop headers.
> > > 
> > > Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
> > > ---
> > >  platforms/barebox.in | 2 +-
> > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > 
> > > diff --git a/platforms/barebox.in b/platforms/barebox.in
> > > index 645366e93..46ab32a07 100644
> > > --- a/platforms/barebox.in
> > > +++ b/platforms/barebox.in
> > > @@ -12,7 +12,7 @@ menuconfig BAREBOX
> > >  	select HOST_LIBUSB if BAREBOX_NEEDS_HOST_LIBUSB
> > >  	select HOST_OPENSSL if BAREBOX_NEEDS_HOST_OPENSSL
> > >  	select HOST_IMX_CST if BAREBOX_NEEDS_HOST_IMX_CST
> > > -	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP
> > > +	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP ||
> > > !SETUP_DISABLE_REPRODUCIBLE
> > 
> > This does not work. You will need to enable BAREBOX_NEEDS_HOST_LZOP
> > manually if lzop is used by barebox.
> 
> Oops, you're right – in the platformconfig menu all SETUP_ symbols seem to be
> undefined. Anyway, it's probably a bad idea to depend on regenerating a
> platformconfig when the user en/disables user properties.
> 
> Can I just make barebox unconditionally depend on HOST_LZOP?
> 
> Other suggestions?

Why not leave it as is? lzop is not always used in barebox. You should
enable BAREBOX_NEEDS_HOST_LZOP if lzop compression is used in barebox.
That's the use-case for this option.

Michael

-- 
Pengutronix e.K.                           |                             |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |
Peiner Str. 6-8, 31137 Hildesheim, Germany | Phone: +49-5121-206917-0    |
Amtsgericht Hildesheim, HRA 2686           | Fax:   +49-5121-206917-5555 |

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Re: [ptxdist] [PATCH v2 2/4] barebox: depend on HOST_LZOP

[Baeuerle, Florian]

Am Donnerstag, den 13.12.2018, 14:34 +0100 schrieb Michael Olbrich:
> On Thu, Dec 13, 2018 at 01:02:50PM +0000, Baeuerle, Florian wrote:
> > Am Donnerstag, den 13.12.2018, 12:16 +0100 schrieb Michael Olbrich:
> > > On Wed, Dec 12, 2018 at 02:52:54PM +0000, Baeuerle, Florian wrote:
> > > > The version shipped by ptxdist allows us to override the modification
> > > > time in the lzop headers.
> > > > 
> > > > Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
> > > > ---
> > > >  platforms/barebox.in | 2 +-
> > > >  1 file changed, 1 insertion(+), 1 deletion(-)
> > > > 
> > > > diff --git a/platforms/barebox.in b/platforms/barebox.in
> > > > index 645366e93..46ab32a07 100644
> > > > --- a/platforms/barebox.in
> > > > +++ b/platforms/barebox.in
> > > > @@ -12,7 +12,7 @@ menuconfig BAREBOX
> > > >  	select HOST_LIBUSB if BAREBOX_NEEDS_HOST_LIBUSB
> > > >  	select HOST_OPENSSL if BAREBOX_NEEDS_HOST_OPENSSL
> > > >  	select HOST_IMX_CST if BAREBOX_NEEDS_HOST_IMX_CST
> > > > -	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP
> > > > +	select HOST_LZOP if BAREBOX_NEEDS_HOST_LZOP ||
> > > > !SETUP_DISABLE_REPRODUCIBLE
> > > 
> > > This does not work. You will need to enable BAREBOX_NEEDS_HOST_LZOP
> > > manually if lzop is used by barebox.
> > 
> > Oops, you're right – in the platformconfig menu all SETUP_ symbols seem to
> > be
> > undefined. Anyway, it's probably a bad idea to depend on regenerating a
> > platformconfig when the user en/disables user properties.
> > 
> > Can I just make barebox unconditionally depend on HOST_LZOP?
> > 
> > Other suggestions?
> 
> Why not leave it as is? lzop is not always used in barebox. You should
> enable BAREBOX_NEEDS_HOST_LZOP if lzop compression is used in barebox.
> That's the use-case for this option.
> 

Yes it's an option, but if ptxdist does reproducible by default, then it's a bit
misleading that the user has to enable a ptxdist switch if barebox is using lzop
to actually get reproducible binaries.

Cannot think of any good solution though (other than stating this in the help
text maybe?).


- Florian
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[ptxdist] [PATCH v3 1/3] config/setup: make reproducible builds configurable

[Baeuerle, Florian]

Some of ptxdist's packages use SOURCE_DATE_EPOCH to make the build
results predictable. Make this behaviour more configurable via a newly
introduced ptxdist setup options.

By default, this will set SOURCE_DATE_EPOCH to the year and month of the
used OSELAS Toolchain version. If the used toolchain is not an
OSELAS-Toolchain, the PTXdist version is used as a fallback.

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 config/setup/Kconfig                 | 47 ++++++++++++++++++++++++++
 config/setup/ptxdistrc.default       |  5 +++
 scripts/lib/ptxd_lib_reproducible.sh | 49 +++++++++++++++++++++++++++-
 3 files changed, 100 insertions(+), 1 deletion(-)

diff --git a/config/setup/Kconfig b/config/setup/Kconfig
index 990da03a1..10adb970d 100644
--- a/config/setup/Kconfig
+++ b/config/setup/Kconfig
@@ -264,6 +264,53 @@ config SETUP_DISABLE_LOCAL_CHECK
 	  may fail under certain circumstances.
 	  Disable this check at your own risk.
 
+config SETUP_DISABLE_REPRODUCIBLE
+	bool
+	prompt "disable reproducible builds"
+	help
+	  By default ptxdist will build some packages in a
+	  reproducible way by injecting fake timestamps, user and
+	  host name into the build.
+
+if !SETUP_DISABLE_REPRODUCIBLE
+
+choice
+	prompt "Fake timestamps source"
+	default SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
+
+	config SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
+		bool
+		prompt "toolchain version"
+
+	config SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
+		bool
+		prompt "ptxdist version"
+
+	config SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
+		bool
+		prompt "custom timestamp"
+
+endchoice
+
+config SETUP_REPRODUCIBLE_TIMESTAMP
+	string
+	default "toolchain" if SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
+	default "ptxdist" if SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
+	default "custom" if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
+
+if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
+
+config SETUP_REPRODUCIBLE_TIMESTAMP_STRING
+	string
+	prompt "Fake timestamp"
+	default "2018-11-01 UTC"
+	help
+	  Supply a custom fake timestamp to be injected to the build.
+	  The timestamp is passed to 'date --date'.
+
+endif
+endif
+
 config SETUP_ENV_WHITELIST
 	string "environment variable whitelist (space separated)"
 	help
diff --git a/config/setup/ptxdistrc.default b/config/setup/ptxdistrc.default
index 397b78eb7..8aa7dcc9a 100644
--- a/config/setup/ptxdistrc.default
+++ b/config/setup/ptxdistrc.default
@@ -61,6 +61,11 @@ PTXCONF_SETUP_JAVA_SDK="/usr/lib/jvm/default-java"
 # Developer Options 
 #
 # PTXCONF_SETUP_DISABLE_LOCAL_CHECK is not set
+# PTXCONF_SETUP_DISABLE_REPRODUCIBLE is not set
+PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN=y
+# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST is not set
+# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM is not set
+PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP="toolchain"
 PTXCONF_SETUP_ENV_WHITELIST=""
 # PTXCONF_SETUP_COMMON_CACHE is not set
 # PTXCONF_SETUP_GEN_DEP_TREE is not set
diff --git a/scripts/lib/ptxd_lib_reproducible.sh b/scripts/lib/ptxd_lib_reproducible.sh
index e2e664ba8..98c528ac2 100644
--- a/scripts/lib/ptxd_lib_reproducible.sh
+++ b/scripts/lib/ptxd_lib_reproducible.sh
@@ -8,8 +8,55 @@
 # see the README file.
 #
 
+ptxd_timestamp_ptxdist() {
+    ptxd_reply="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC"
+}
+
+ptxd_timestamp_toolchain() {
+    local oselas_ptxconfig="$(readlink -f "${PTXDIST_TOOLCHAIN}/ptxconfig")"
+
+    if [ -e "${oselas_ptxconfig}" ]; then
+        local oselas_version="$(source "${oselas_ptxconfig}" && echo ${PTXCONF_CONFIGFILE_VERSION})"
+        local orig_IFS="${IFS}"
+        local IFS="."
+        set -- ${oselas_version}
+        IFS="${orig_IFS}"
+        ptxd_reply="${1}-${2}-01 UTC"
+    else
+        echo "${PTXDIST_LOG_PROMPT}warning: cannot deduce timestamp from toolchain, falling back to PTXdist version for reproducible timestamp"
+        ptxd_timestamp_ptxdist
+    fi
+}
+
+ptxd_timestamp_custom() {
+    local ts="${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_STRING}"
+
+    if ! date --date "${ts}" > /dev/null 2>&1; then
+        echo "${PTXDIST_LOG_PROMPT}warning: '${ts}' is not a valid timestamp, falling back to toolchain for reproducible timestamp"
+        ptxd_timestamp_toolchain
+    else
+        ptxd_reply="${ts}"
+    fi
+}
+
 ptxd_lib_reproducible() {
-    SOURCE_DATE_EPOCH="$(echo $(date --date="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC" "+%s"))"
+    if [ "${PTXCONF_SETUP_DISABLE_REPRODUCIBLE}" = "y" ]; then
+        ptxd_timestamp_ptxdist
+    else
+        case "${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP}" in
+            "custom")
+                ptxd_timestamp_custom
+                ;;
+            "ptxdist")
+                ptxd_timestamp_ptxdist
+                ;;
+            *)
+                ptxd_timestamp_toolchain
+                ;;
+        esac
+    fi
+
+    SOURCE_DATE_EPOCH="$(echo $(date --date="${ptxd_reply}" "+%s"))"
     export SOURCE_DATE_EPOCH
 
     PTXDIST_BUILD_TIMESTAMP="$(echo $(date --utc --date @${SOURCE_DATE_EPOCH} +%Y-%m-%dT%H:%M+0000))"
-- 
2.19.2

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[ptxdist] [PATCH v3 2/3] barebox: add support for reproducible build

[Baeuerle, Florian]

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 platforms/barebox.in | 3 +++
 rules/barebox.make   | 9 +++++++++
 2 files changed, 12 insertions(+)

diff --git a/platforms/barebox.in b/platforms/barebox.in
index 645366e93..46f3d8ced 100644
--- a/platforms/barebox.in
+++ b/platforms/barebox.in
@@ -113,4 +113,7 @@ config BAREBOX_NEEDS_HOST_LZOP
 	  lzop is used in order to compile lzop for your development
 	  host.
 
+	  This option is required to produce reproducible lzop-
+	  compressed barebox images.
+
 endif
diff --git a/rules/barebox.make b/rules/barebox.make
index 83a7126cc..080074f64 100644
--- a/rules/barebox.make
+++ b/rules/barebox.make
@@ -47,6 +47,15 @@ BAREBOX_WRAPPER_BLACKLIST := \
 BAREBOX_CONF_OPT := $(call barebox-opts, BAREBOX)
 BAREBOX_MAKE_OPT := $(BAREBOX_CONF_OPT)
 
+ifndef PTXCONF_SETUP_DISABLE_REPRODUCIBLE
+BAREBOX_MAKE_ENV := $(BAREBOX_MAKE_ENV) \
+	SOURCE_DATE_EPOCH="$(SOURCE_DATE_EPOCH)" \
+	KBUILD_BUILD_TIMESTAMP="$(shell date --utc --date @$(SOURCE_DATE_EPOCH))" \
+	KBUILD_BUILD_VERSION="0" \
+	KBUILD_BUILD_USER="ptxdist" \
+	KBUILD_BUILD_HOST="ptxdist"
+endif
+
 BAREBOX_TAGS_OPT := TAGS tags cscope
 
 ifdef PTXCONF_BAREBOX
-- 
2.19.2

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[ptxdist] [PATCH v3 3/3] barebox_mlo: add support for reproducible build

[Baeuerle, Florian]

Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
---
 rules/barebox_mlo.make | 10 +++++++++-
 1 file changed, 9 insertions(+), 1 deletion(-)

diff --git a/rules/barebox_mlo.make b/rules/barebox_mlo.make
index 368da0e8f..2f1da0ca7 100644
--- a/rules/barebox_mlo.make
+++ b/rules/barebox_mlo.make
@@ -39,7 +39,6 @@ BAREBOX_MLO_WRAPPER_BLACKLIST := \
 	TARGET_BUILD_ID
 
 BAREBOX_MLO_PATH	:= PATH=$(CROSS_PATH)
-BAREBOX_MLO_CONF_ENV	:= KCONFIG_NOTIMESTAMP=1
 BAREBOX_MLO_CONF_TOOL	:= kconfig
 BAREBOX_MLO_CONF_OPT	:= \
 			V=$(PTXDIST_VERBOSE) \
@@ -49,6 +48,15 @@ BAREBOX_MLO_CONF_OPT	:= \
 
 BAREBOX_MLO_MAKE_OPT	:= $(BAREBOX_MLO_CONF_OPT)
 
+ifndef PTXCONF_SETUP_DISABLE_REPRODUCIBLE
+BAREBOX_MLO_MAKE_ENV := $(BAREBOX_MLO_MAKE_ENV) \
+	SOURCE_DATE_EPOCH="$(SOURCE_DATE_EPOCH)" \
+	KBUILD_BUILD_TIMESTAMP="$(shell date --utc --date @$(SOURCE_DATE_EPOCH))" \
+	KBUILD_BUILD_VERSION="0" \
+	KBUILD_BUILD_USER="ptxdist" \
+	KBUILD_BUILD_HOST="ptxdist"
+endif
+
 ifdef PTXCONF_BAREBOX_MLO
 $(BAREBOX_MLO_CONFIG):
 	@echo
-- 
2.19.2

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Re: [ptxdist] [PATCH v3 1/3] config/setup: make reproducible builds configurable

[Baeuerle, Florian]

Hi,

we now use this for a while and so far it works well for barebox (there's a
patch required for barebox to get a reproducible binary independent of the
filsystem in use, but that's included since barebox 2019.01.0).

I am not ultimately happy with the patch (ptxdist --version prints a warning),
especially not with

ifndef PTXCONF_SETUP_DISABLE_REPRODUCIBLE

in the rules.

I'll fix the ptxdist --version warning and maybe add a symbol that negates the
above symbol.

I'd be happy about every suggestion that increases the likelihood of acceptance
of the patch. We really need this for reducing bootloader update frequency with
RAUC.


- Florian

Am Freitag, den 21.12.2018, 10:06 +0000 schrieb Baeuerle, Florian:
> Some of ptxdist's packages use SOURCE_DATE_EPOCH to make the build
> results predictable. Make this behaviour more configurable via a newly
> introduced ptxdist setup options.
> 
> By default, this will set SOURCE_DATE_EPOCH to the year and month of the
> used OSELAS Toolchain version. If the used toolchain is not an
> OSELAS-Toolchain, the PTXdist version is used as a fallback.
> 
> Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>
> ---
>  config/setup/Kconfig                 | 47 ++++++++++++++++++++++++++
>  config/setup/ptxdistrc.default       |  5 +++
>  scripts/lib/ptxd_lib_reproducible.sh | 49 +++++++++++++++++++++++++++-
>  3 files changed, 100 insertions(+), 1 deletion(-)
> 
> diff --git a/config/setup/Kconfig b/config/setup/Kconfig
> index 990da03a1..10adb970d 100644
> --- a/config/setup/Kconfig
> +++ b/config/setup/Kconfig
> @@ -264,6 +264,53 @@ config SETUP_DISABLE_LOCAL_CHECK
>  	  may fail under certain circumstances.
>  	  Disable this check at your own risk.
>  
> +config SETUP_DISABLE_REPRODUCIBLE
> +	bool
> +	prompt "disable reproducible builds"
> +	help
> +	  By default ptxdist will build some packages in a
> +	  reproducible way by injecting fake timestamps, user and
> +	  host name into the build.
> +
> +if !SETUP_DISABLE_REPRODUCIBLE
> +
> +choice
> +	prompt "Fake timestamps source"
> +	default SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
> +
> +	config SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
> +		bool
> +		prompt "toolchain version"
> +
> +	config SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
> +		bool
> +		prompt "ptxdist version"
> +
> +	config SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
> +		bool
> +		prompt "custom timestamp"
> +
> +endchoice
> +
> +config SETUP_REPRODUCIBLE_TIMESTAMP
> +	string
> +	default "toolchain" if SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
> +	default "ptxdist" if SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
> +	default "custom" if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
> +
> +if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
> +
> +config SETUP_REPRODUCIBLE_TIMESTAMP_STRING
> +	string
> +	prompt "Fake timestamp"
> +	default "2018-11-01 UTC"
> +	help
> +	  Supply a custom fake timestamp to be injected to the build.
> +	  The timestamp is passed to 'date --date'.
> +
> +endif
> +endif
> +
>  config SETUP_ENV_WHITELIST
>  	string "environment variable whitelist (space separated)"
>  	help
> diff --git a/config/setup/ptxdistrc.default b/config/setup/ptxdistrc.default
> index 397b78eb7..8aa7dcc9a 100644
> --- a/config/setup/ptxdistrc.default
> +++ b/config/setup/ptxdistrc.default
> @@ -61,6 +61,11 @@ PTXCONF_SETUP_JAVA_SDK="/usr/lib/jvm/default-java"
>  # Developer Options 
>  #
>  # PTXCONF_SETUP_DISABLE_LOCAL_CHECK is not set
> +# PTXCONF_SETUP_DISABLE_REPRODUCIBLE is not set
> +PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN=y
> +# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST is not set
> +# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM is not set
> +PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP="toolchain"
>  PTXCONF_SETUP_ENV_WHITELIST=""
>  # PTXCONF_SETUP_COMMON_CACHE is not set
>  # PTXCONF_SETUP_GEN_DEP_TREE is not set
> diff --git a/scripts/lib/ptxd_lib_reproducible.sh
> b/scripts/lib/ptxd_lib_reproducible.sh
> index e2e664ba8..98c528ac2 100644
> --- a/scripts/lib/ptxd_lib_reproducible.sh
> +++ b/scripts/lib/ptxd_lib_reproducible.sh
> @@ -8,8 +8,55 @@
>  # see the README file.
>  #
>  
> +ptxd_timestamp_ptxdist() {
> +    ptxd_reply="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC"
> +}
> +
> +ptxd_timestamp_toolchain() {
> +    local oselas_ptxconfig="$(readlink -f "${PTXDIST_TOOLCHAIN}/ptxconfig")"
> +
> +    if [ -e "${oselas_ptxconfig}" ]; then
> +        local oselas_version="$(source "${oselas_ptxconfig}" && echo
> ${PTXCONF_CONFIGFILE_VERSION})"
> +        local orig_IFS="${IFS}"
> +        local IFS="."
> +        set -- ${oselas_version}
> +        IFS="${orig_IFS}"
> +        ptxd_reply="${1}-${2}-01 UTC"
> +    else
> +        echo "${PTXDIST_LOG_PROMPT}warning: cannot deduce timestamp from
> toolchain, falling back to PTXdist version for reproducible timestamp"
> +        ptxd_timestamp_ptxdist
> +    fi
> +}
> +
> +ptxd_timestamp_custom() {
> +    local ts="${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_STRING}"
> +
> +    if ! date --date "${ts}" > /dev/null 2>&1; then
> +        echo "${PTXDIST_LOG_PROMPT}warning: '${ts}' is not a valid timestamp,
> falling back to toolchain for reproducible timestamp"
> +        ptxd_timestamp_toolchain
> +    else
> +        ptxd_reply="${ts}"
> +    fi
> +}
> +
>  ptxd_lib_reproducible() {
> -    SOURCE_DATE_EPOCH="$(echo $(date --date="${PTXDIST_VERSION_YEAR}-
> ${PTXDIST_VERSION_MONTH}-01 UTC" "+%s"))"
> +    if [ "${PTXCONF_SETUP_DISABLE_REPRODUCIBLE}" = "y" ]; then
> +        ptxd_timestamp_ptxdist
> +    else
> +        case "${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP}" in
> +            "custom")
> +                ptxd_timestamp_custom
> +                ;;
> +            "ptxdist")
> +                ptxd_timestamp_ptxdist
> +                ;;
> +            *)
> +                ptxd_timestamp_toolchain
> +                ;;
> +        esac
> +    fi
> +
> +    SOURCE_DATE_EPOCH="$(echo $(date --date="${ptxd_reply}" "+%s"))"
>      export SOURCE_DATE_EPOCH
>  
>      PTXDIST_BUILD_TIMESTAMP="$(echo $(date --utc --date @${SOURCE_DATE_EPOCH}
> +%Y-%m-%dT%H:%M+0000))"
> -- 
> 2.19.2
> 
> _______________________________________________
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> ptxdist@pengutronix.de
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Re: [ptxdist] [PATCH v3 1/3] config/setup: make reproducible builds configurable

[Michael Olbrich]

On Fri, Dec 21, 2018 at 10:06:59AM +0000, Baeuerle, Florian wrote:
> Some of ptxdist's packages use SOURCE_DATE_EPOCH to make the build
> results predictable. Make this behaviour more configurable via a newly
> introduced ptxdist setup options.
> 
> By default, this will set SOURCE_DATE_EPOCH to the year and month of the
> used OSELAS Toolchain version. If the used toolchain is not an
> OSELAS-Toolchain, the PTXdist version is used as a fallback.
> 
> Signed-off-by: Florian Bäuerle <florian.baeuerle@allegion.com>

Sorry for the late reply. This got lost on my side.

> ---
>  config/setup/Kconfig                 | 47 ++++++++++++++++++++++++++
>  config/setup/ptxdistrc.default       |  5 +++
>  scripts/lib/ptxd_lib_reproducible.sh | 49 +++++++++++++++++++++++++++-
>  3 files changed, 100 insertions(+), 1 deletion(-)
> 
> diff --git a/config/setup/Kconfig b/config/setup/Kconfig
> index 990da03a1..10adb970d 100644
> --- a/config/setup/Kconfig
> +++ b/config/setup/Kconfig
> @@ -264,6 +264,53 @@ config SETUP_DISABLE_LOCAL_CHECK
>  	  may fail under certain circumstances.
>  	  Disable this check at your own risk.
>  
> +config SETUP_DISABLE_REPRODUCIBLE
> +	bool
> +	prompt "disable reproducible builds"
> +	help
> +	  By default ptxdist will build some packages in a
> +	  reproducible way by injecting fake timestamps, user and
> +	  host name into the build.
> +

The switch to disable this should be in setup ...

> +if !SETUP_DISABLE_REPRODUCIBLE
> +
> +choice
> +	prompt "Fake timestamps source"
> +	default SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
> +
> +	config SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
> +		bool
> +		prompt "toolchain version"
> +
> +	config SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
> +		bool
> +		prompt "ptxdist version"
> +
> +	config SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
> +		bool
> +		prompt "custom timestamp"
> +
> +endchoice

... but the choice should be part of the pxconfig. I would accept a option
to disable this here too, but I don't think that's necessary.
In my opinion disabling reproducible builds is strictly a development
feature.

> +
> +config SETUP_REPRODUCIBLE_TIMESTAMP
> +	string
> +	default "toolchain" if SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN
> +	default "ptxdist" if SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST
> +	default "custom" if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
> +
> +if SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM
> +
> +config SETUP_REPRODUCIBLE_TIMESTAMP_STRING
> +	string
> +	prompt "Fake timestamp"
> +	default "2018-11-01 UTC"

I don't think we should provide a default. This should be an explicit
choice. But maybe put this as an example in the help text.

> +	help
> +	  Supply a custom fake timestamp to be injected to the build.
> +	  The timestamp is passed to 'date --date'.
> +
> +endif
> +endif
> +
>  config SETUP_ENV_WHITELIST
>  	string "environment variable whitelist (space separated)"
>  	help
> diff --git a/config/setup/ptxdistrc.default b/config/setup/ptxdistrc.default
> index 397b78eb7..8aa7dcc9a 100644
> --- a/config/setup/ptxdistrc.default
> +++ b/config/setup/ptxdistrc.default
> @@ -61,6 +61,11 @@ PTXCONF_SETUP_JAVA_SDK="/usr/lib/jvm/default-java"
>  # Developer Options 
>  #
>  # PTXCONF_SETUP_DISABLE_LOCAL_CHECK is not set
> +# PTXCONF_SETUP_DISABLE_REPRODUCIBLE is not set
> +PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_TOOLCHAIN=y
> +# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_PTXDIST is not set
> +# PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_CUSTOM is not set
> +PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP="toolchain"
>  PTXCONF_SETUP_ENV_WHITELIST=""
>  # PTXCONF_SETUP_COMMON_CACHE is not set
>  # PTXCONF_SETUP_GEN_DEP_TREE is not set
> diff --git a/scripts/lib/ptxd_lib_reproducible.sh b/scripts/lib/ptxd_lib_reproducible.sh
> index e2e664ba8..98c528ac2 100644
> --- a/scripts/lib/ptxd_lib_reproducible.sh
> +++ b/scripts/lib/ptxd_lib_reproducible.sh
> @@ -8,8 +8,55 @@
>  # see the README file.
>  #
>  
> +ptxd_timestamp_ptxdist() {
> +    ptxd_reply="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC"
> +}
> +
> +ptxd_timestamp_toolchain() {
> +    local oselas_ptxconfig="$(readlink -f "${PTXDIST_TOOLCHAIN}/ptxconfig")"
> +
> +    if [ -e "${oselas_ptxconfig}" ]; then
> +        local oselas_version="$(source "${oselas_ptxconfig}" && echo ${PTXCONF_CONFIGFILE_VERSION})"

           local oselas_version="$(ptxd_get_kconfig "${oselas_ptxconfig}" PTXCONF_CONFIGFILE_VERSION)"

> +        local orig_IFS="${IFS}"
> +        local IFS="."
> +        set -- ${oselas_version}
> +        IFS="${orig_IFS}"
> +        ptxd_reply="${1}-${2}-01 UTC"
> +    else
> +        echo "${PTXDIST_LOG_PROMPT}warning: cannot deduce timestamp from toolchain, falling back to PTXdist version for reproducible timestamp"
> +        ptxd_timestamp_ptxdist

No. Just fail here. With the options in the ptxconfig that should be ok.

> +    fi
> +}
> +
> +ptxd_timestamp_custom() {
> +    local ts="${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP_STRING}"

With the change I requested above, you'll need to use ptxd_get_ptxconf
here (and for the other PTXCONF_* variables from ptxconfig.

> +
> +    if ! date --date "${ts}" > /dev/null 2>&1; then
> +        echo "${PTXDIST_LOG_PROMPT}warning: '${ts}' is not a valid timestamp, falling back to toolchain for reproducible timestamp"
> +        ptxd_timestamp_toolchain
> +    else
> +        ptxd_reply="${ts}"
> +    fi
> +}
> +
>  ptxd_lib_reproducible() {
> -    SOURCE_DATE_EPOCH="$(echo $(date --date="${PTXDIST_VERSION_YEAR}-${PTXDIST_VERSION_MONTH}-01 UTC" "+%s"))"
> +    if [ "${PTXCONF_SETUP_DISABLE_REPRODUCIBLE}" = "y" ]; then
> +        ptxd_timestamp_ptxdist

I don't think that this is correct. Maybe:

	ptxd_reply="$(date "+@%s")"

> +    else
           ptxd_timestamp_$(ptxd_get_ptxconf PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP)

should work as expected.

Michael

> +        case "${PTXCONF_SETUP_REPRODUCIBLE_TIMESTAMP}" in
> +            "custom")
> +                ptxd_timestamp_custom
> +                ;;
> +            "ptxdist")
> +                ptxd_timestamp_ptxdist
> +                ;;
> +            *)
> +                ptxd_timestamp_toolchain
> +                ;;
> +        esac
> +    fi
> +
> +    SOURCE_DATE_EPOCH="$(echo $(date --date="${ptxd_reply}" "+%s"))"
>      export SOURCE_DATE_EPOCH
>  
>      PTXDIST_BUILD_TIMESTAMP="$(echo $(date --utc --date @${SOURCE_DATE_EPOCH} +%Y-%m-%dT%H:%M+0000))"
> -- 
> 2.19.2
> 
> _______________________________________________
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> ptxdist@pengutronix.de

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