diff mbox series

[v3] systemd: switch to en_US.UTF-8 locale when building

Message ID 20180212213400.15061-1-julius@kriukas.lt
State Superseded
Headers show
Series [v3] systemd: switch to en_US.UTF-8 locale when building | expand

Commit Message

Julius Kriukas Feb. 12, 2018, 9:34 p.m. UTC 
When BR2_REPRODUCIBLE is enabled or host uses non UTF-8 capable locale
building systemd fails with an error:

[1/1080] Generating systemd.bg.catalog with a meson_exe.py custom command.
FAILED: catalog/systemd.bg.catalog
/buildroot/output/host/bin/python3 /buildroot/output/host/bin/meson --internal exe /buildroot/output/build/systemd-236/build/meson-private/meson_exe_sed_232a0623cc7ce2cd67ec72ed784b76307102ed76.dat
Warning: You are using 'ANSI_X3.4-1968' which is not a Unicode-compatible locale.
You might see errors if you use UTF-8 strings as filenames, as strings, or as file contents.
Please switch to a UTF-8 locale for your platform.
...
UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 1079: ordinal not in range(128)
package/pkg-generic.mk:247: recipe for target '/buildroot/output/build/systemd-236/.stamp_built' failed
make: *** [/buildroot/output/build/systemd-236/.stamp_built] Error 1

This patch changes default host system locale from C to en_US.UTF-8 when
building systemd package to fix this issue. It also introduces
BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that checks if this locale is available on
the host system. If locale is not available error message is show and build
process is stopped.

Signed-off-by: Julius Kriukas <julius@kriukas.lt>

---
Changes v1 -> v2:
  - Added BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that is selected by
    BR2_REPRODUCIBLE.
  - Extended support/dependencies/dependencies.sh to check for
    en_US.UTF-8 locale availability if BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
    is set.

Changes v2 -> v3:
  - Always select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE by systemd package.
  - Do not select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE by BR2_REPRODUCIBLE.
  - Keep global locale set to C if BR2_REPRODUCIBLE=y.
  - Use 'grep -q' instead of '> /dev/null' in dependencies.sh script.
---
 Config.in                            |  5 +++++
 package/systemd/Config.in            |  1 +
 package/systemd/systemd.mk           | 10 ++++++----
 support/dependencies/dependencies.sh | 13 +++++++++++++
 4 files changed, 25 insertions(+), 4 deletions(-)

Comments

John Keeping Feb. 17, 2018, 6:06 p.m. UTC | #1 
On Mon, 12 Feb 2018 23:34:00 +0200, Julius Kriukas wrote:

> When BR2_REPRODUCIBLE is enabled or host uses non UTF-8 capable locale
> building systemd fails with an error:
> 
> [1/1080] Generating systemd.bg.catalog with a meson_exe.py custom command.
> FAILED: catalog/systemd.bg.catalog
> /buildroot/output/host/bin/python3 /buildroot/output/host/bin/meson --internal exe /buildroot/output/build/systemd-236/build/meson-private/meson_exe_sed_232a0623cc7ce2cd67ec72ed784b76307102ed76.dat
> Warning: You are using 'ANSI_X3.4-1968' which is not a Unicode-compatible locale.
> You might see errors if you use UTF-8 strings as filenames, as strings, or as file contents.
> Please switch to a UTF-8 locale for your platform.
> ...
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 1079: ordinal not in range(128)
> package/pkg-generic.mk:247: recipe for target '/buildroot/output/build/systemd-236/.stamp_built' failed
> make: *** [/buildroot/output/build/systemd-236/.stamp_built] Error 1
> 
> This patch changes default host system locale from C to en_US.UTF-8 when
> building systemd package to fix this issue. It also introduces
> BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that checks if this locale is available on
> the host system. If locale is not available error message is show and build
> process is stopped.
> 
> Signed-off-by: Julius Kriukas <julius@kriukas.lt>

Tested-by: John Keeping <john@metanate.com>

And, FWIW, with the indentation in Config.in fixed,

Reviewed-by: John Keeping <john@metanate.com>

> ---
> Changes v1 -> v2:
>   - Added BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that is selected by
>     BR2_REPRODUCIBLE.
>   - Extended support/dependencies/dependencies.sh to check for
>     en_US.UTF-8 locale availability if BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
>     is set.
> 
> Changes v2 -> v3:
>   - Always select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE by systemd package.
>   - Do not select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE by BR2_REPRODUCIBLE.
>   - Keep global locale set to C if BR2_REPRODUCIBLE=y.
>   - Use 'grep -q' instead of '> /dev/null' in dependencies.sh script.
> ---
>  Config.in                            |  5 +++++
>  package/systemd/Config.in            |  1 +
>  package/systemd/systemd.mk           | 10 ++++++----
>  support/dependencies/dependencies.sh | 13 +++++++++++++
>  4 files changed, 25 insertions(+), 4 deletions(-)
> 
> diff --git a/Config.in b/Config.in
> index 0002df5176..8d471dfb2e 100644
> --- a/Config.in
> +++ b/Config.in
> @@ -94,6 +94,11 @@ config BR2_HOSTARCH_NEEDS_IA32_COMPILER
>  config BR2_NEEDS_HOST_UTF8_LOCALE
>  	bool
>  
> +# Hidden boolean selected by packages that explicitly need en_US.UTF-8 locale
> +# to be available on host system.
> +config BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
> +	bool
> +
>  source "arch/Config.in"
>  
>  menu "Build options"
> diff --git a/package/systemd/Config.in b/package/systemd/Config.in
> index 661f40dee4..742b3f1f1d 100644
> --- a/package/systemd/Config.in
> +++ b/package/systemd/Config.in
> @@ -27,6 +27,7 @@ menuconfig BR2_PACKAGE_SYSTEMD
>  	select BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # kmod-tools
>  	select BR2_PACKAGE_KMOD_TOOLS
>  	select BR2_TARGET_TZ_INFO
> +        select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE

This should use TAB for indentation.

>  	help
>  	  systemd is a system and service manager for Linux,
>  	  compatible with SysV and LSB init scripts. systemd provides
> diff --git a/package/systemd/systemd.mk b/package/systemd/systemd.mk
> index 1c31ebb34c..58798f32df 100644
> --- a/package/systemd/systemd.mk
> +++ b/package/systemd/systemd.mk
> @@ -385,23 +385,25 @@ endef
>  
>  SYSTEMD_NINJA_OPTS = $(if $(VERBOSE),-v) -j$(PARALLEL_JOBS)
>  
> +SYSTEMD_ENV = $(TARGET_MAKE_ENV) LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8
> +
>  define SYSTEMD_CONFIGURE_CMDS
>  	rm -rf $(@D)/build
>  	mkdir -p $(@D)/build
> -	$(TARGET_MAKE_ENV) meson $(SYSTEMD_CONF_OPTS) $(@D) $(@D)/build
> +	$(SYSTEMD_ENV) meson $(SYSTEMD_CONF_OPTS) $(@D) $(@D)/build
>  endef
>  
>  define SYSTEMD_BUILD_CMDS
> -	$(TARGET_MAKE_ENV) ninja $(SYSTEMD_NINJA_OPTS) -C $(@D)/build
> +	$(SYSTEMD_ENV) ninja $(SYSTEMD_NINJA_OPTS) -C $(@D)/build
>  endef
>  
>  define SYSTEMD_INSTALL_TARGET_CMDS
> -	$(TARGET_MAKE_ENV) DESTDIR=$(TARGET_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
> +	$(SYSTEMD_ENV) DESTDIR=$(TARGET_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
>  		-C $(@D)/build install
>  endef
>  
>  define SYSTEMD_INSTALL_STAGING_CMDS
> -	$(TARGET_MAKE_ENV) DESTDIR=$(STAGING_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
> +	$(SYSTEMD_ENV) DESTDIR=$(STAGING_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
>  		-C $(@D)/build install
>  endef
>  
> diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
> index 1804e85508..881f07008c 100755
> --- a/support/dependencies/dependencies.sh
> +++ b/support/dependencies/dependencies.sh
> @@ -207,6 +207,19 @@ if grep ^BR2_NEEDS_HOST_UTF8_LOCALE=y $BR2_CONFIG > /dev/null; then
>  	fi
>  fi
>  
> +if grep -q ^BR2_NEEDS_HOST_EN_US_UTF8_LOCALE=y $BR2_CONFIG; then
> +	if ! which locale > /dev/null ; then
> +		echo
> +		echo "You need locale support on your build machine"
> +		exit 1 ;
> +	fi
> +	if ! LC_ALL=en_US.UTF-8 locale -c charmap | grep -q '^UTF-8$'; then
> +		echo
> +		echo "You need en_US.UTF-8 locale suppport on the host system"
> +		exit 1 ;
> +	fi
> +fi
> +
>  if grep -q ^BR2_NEEDS_HOST_JAVA=y $BR2_CONFIG ; then
>  	check_prog_host "java"
>  	JAVA_GCJ=$(java -version 2>&1 | grep gcj)
Julius Kriukas Feb. 22, 2018, 11:02 p.m. UTC | #2 
On 02/17/2018 08:06 PM, John Keeping wrote:
> On Mon, 12 Feb 2018 23:34:00 +0200, Julius Kriukas wrote:
> 
>> When BR2_REPRODUCIBLE is enabled or host uses non UTF-8 capable locale
>> building systemd fails with an error:
>>
>> [1/1080] Generating systemd.bg.catalog with a meson_exe.py custom command.
>> FAILED: catalog/systemd.bg.catalog
>> /buildroot/output/host/bin/python3 /buildroot/output/host/bin/meson --internal exe /buildroot/output/build/systemd-236/build/meson-private/meson_exe_sed_232a0623cc7ce2cd67ec72ed784b76307102ed76.dat
>> Warning: You are using 'ANSI_X3.4-1968' which is not a Unicode-compatible locale.
>> You might see errors if you use UTF-8 strings as filenames, as strings, or as file contents.
>> Please switch to a UTF-8 locale for your platform.
>> ...
>> UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 1079: ordinal not in range(128)
>> package/pkg-generic.mk:247: recipe for target '/buildroot/output/build/systemd-236/.stamp_built' failed
>> make: *** [/buildroot/output/build/systemd-236/.stamp_built] Error 1
>>
>> This patch changes default host system locale from C to en_US.UTF-8 when
>> building systemd package to fix this issue. It also introduces
>> BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that checks if this locale is available on
>> the host system. If locale is not available error message is show and build
>> process is stopped.
>>
>> Signed-off-by: Julius Kriukas <julius@kriukas.lt>
> 
> Tested-by: John Keeping <john@metanate.com>
> 
> And, FWIW, with the indentation in Config.in fixed,
> 
> Reviewed-by: John Keeping <john@metanate.com>
> 
>> ---
>> Changes v1 -> v2:
>>    - Added BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that is selected by
>>      BR2_REPRODUCIBLE.
>>    - Extended support/dependencies/dependencies.sh to check for
>>      en_US.UTF-8 locale availability if BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
>>      is set.
>>
>> Changes v2 -> v3:
>>    - Always select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE by systemd package.
>>    - Do not select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE by BR2_REPRODUCIBLE.
>>    - Keep global locale set to C if BR2_REPRODUCIBLE=y.
>>    - Use 'grep -q' instead of '> /dev/null' in dependencies.sh script.
>> ---
>>   Config.in                            |  5 +++++
>>   package/systemd/Config.in            |  1 +
>>   package/systemd/systemd.mk           | 10 ++++++----
>>   support/dependencies/dependencies.sh | 13 +++++++++++++
>>   4 files changed, 25 insertions(+), 4 deletions(-)
>>
>> diff --git a/Config.in b/Config.in
>> index 0002df5176..8d471dfb2e 100644
>> --- a/Config.in
>> +++ b/Config.in
>> @@ -94,6 +94,11 @@ config BR2_HOSTARCH_NEEDS_IA32_COMPILER
>>   config BR2_NEEDS_HOST_UTF8_LOCALE
>>   	bool
>>   
>> +# Hidden boolean selected by packages that explicitly need en_US.UTF-8 locale
>> +# to be available on host system.
>> +config BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
>> +	bool
>> +
>>   source "arch/Config.in"
>>   
>>   menu "Build options"
>> diff --git a/package/systemd/Config.in b/package/systemd/Config.in
>> index 661f40dee4..742b3f1f1d 100644
>> --- a/package/systemd/Config.in
>> +++ b/package/systemd/Config.in
>> @@ -27,6 +27,7 @@ menuconfig BR2_PACKAGE_SYSTEMD
>>   	select BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # kmod-tools
>>   	select BR2_PACKAGE_KMOD_TOOLS
>>   	select BR2_TARGET_TZ_INFO
>> +        select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
> 
> This should use TAB for indentation.
> 
>>   	help
>>   	  systemd is a system and service manager for Linux,
>>   	  compatible with SysV and LSB init scripts. systemd provides
>> diff --git a/package/systemd/systemd.mk b/package/systemd/systemd.mk
>> index 1c31ebb34c..58798f32df 100644
>> --- a/package/systemd/systemd.mk
>> +++ b/package/systemd/systemd.mk
>> @@ -385,23 +385,25 @@ endef
>>   
>>   SYSTEMD_NINJA_OPTS = $(if $(VERBOSE),-v) -j$(PARALLEL_JOBS)
>>   
>> +SYSTEMD_ENV = $(TARGET_MAKE_ENV) LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8
>> +
>>   define SYSTEMD_CONFIGURE_CMDS
>>   	rm -rf $(@D)/build
>>   	mkdir -p $(@D)/build
>> -	$(TARGET_MAKE_ENV) meson $(SYSTEMD_CONF_OPTS) $(@D) $(@D)/build
>> +	$(SYSTEMD_ENV) meson $(SYSTEMD_CONF_OPTS) $(@D) $(@D)/build
>>   endef
>>   
>>   define SYSTEMD_BUILD_CMDS
>> -	$(TARGET_MAKE_ENV) ninja $(SYSTEMD_NINJA_OPTS) -C $(@D)/build
>> +	$(SYSTEMD_ENV) ninja $(SYSTEMD_NINJA_OPTS) -C $(@D)/build
>>   endef
>>   
>>   define SYSTEMD_INSTALL_TARGET_CMDS
>> -	$(TARGET_MAKE_ENV) DESTDIR=$(TARGET_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
>> +	$(SYSTEMD_ENV) DESTDIR=$(TARGET_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
>>   		-C $(@D)/build install
>>   endef
>>   
>>   define SYSTEMD_INSTALL_STAGING_CMDS
>> -	$(TARGET_MAKE_ENV) DESTDIR=$(STAGING_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
>> +	$(SYSTEMD_ENV) DESTDIR=$(STAGING_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
>>   		-C $(@D)/build install
>>   endef
>>   
>> diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
>> index 1804e85508..881f07008c 100755
>> --- a/support/dependencies/dependencies.sh
>> +++ b/support/dependencies/dependencies.sh
>> @@ -207,6 +207,19 @@ if grep ^BR2_NEEDS_HOST_UTF8_LOCALE=y $BR2_CONFIG > /dev/null; then
>>   	fi
>>   fi
>>   
>> +if grep -q ^BR2_NEEDS_HOST_EN_US_UTF8_LOCALE=y $BR2_CONFIG; then
>> +	if ! which locale > /dev/null ; then
>> +		echo
>> +		echo "You need locale support on your build machine"
>> +		exit 1 ;
>> +	fi
>> +	if ! LC_ALL=en_US.UTF-8 locale -c charmap | grep -q '^UTF-8$'; then
>> +		echo
>> +		echo "You need en_US.UTF-8 locale suppport on the host system"
>> +		exit 1 ;
>> +	fi
>> +fi
>> +
>>   if grep -q ^BR2_NEEDS_HOST_JAVA=y $BR2_CONFIG ; then
>>   	check_prog_host "java"
>>   	JAVA_GCJ=$(java -version 2>&1 | grep gcj)

Hi John. Thanks for spotting the indentation issue and review. I am 
submitting v4 of this patch with the issue fixed.
Arnout Vandecappelle Feb. 23, 2018, 9:06 a.m. UTC | #3 
Hi Julius,

 I wanted to take the time to think of better solutions, but since I don't find
the time, here is a very quick review.


On 12-02-18 22:34, Julius Kriukas wrote:
> When BR2_REPRODUCIBLE is enabled or host uses non UTF-8 capable locale
> building systemd fails with an error:
> 
> [1/1080] Generating systemd.bg.catalog with a meson_exe.py custom command.
> FAILED: catalog/systemd.bg.catalog
> /buildroot/output/host/bin/python3 /buildroot/output/host/bin/meson --internal exe /buildroot/output/build/systemd-236/build/meson-private/meson_exe_sed_232a0623cc7ce2cd67ec72ed784b76307102ed76.dat
> Warning: You are using 'ANSI_X3.4-1968' which is not a Unicode-compatible locale.
> You might see errors if you use UTF-8 strings as filenames, as strings, or as file contents.
> Please switch to a UTF-8 locale for your platform.
> ...
> UnicodeDecodeError: 'ascii' codec can't decode byte 0xd0 in position 1079: ordinal not in range(128)

 As someone mentioned (IIRC), it's really not OK that some Python script (is it
meson or ninja?) is relying on a locale being set to work correctly. So it would
be much preferable to find out what the real problem is, and to have an
upstreamable patch that fixes it.

 That said, getting to the bottom of this is work, someone has to do it, and in
the mean time we've got a broken system, and we're about to release 2018.02. So
I'm OK to accept this workaround for the time being (and as we all now, that can
be a very long time :-).

 I would, however, like to mention explicitly in the commit message that this is
just a workaround and that really one of the underlying scripts (either meson or
ninja or something systemd-specific, TBD) is broken.


> package/pkg-generic.mk:247: recipe for target '/buildroot/output/build/systemd-236/.stamp_built' failed
> make: *** [/buildroot/output/build/systemd-236/.stamp_built] Error 1
> 
> This patch changes default host system locale from C to en_US.UTF-8 when
> building systemd package to fix this issue. It also introduces
> BR2_NEEDS_HOST_EN_US_UTF8_LOCALE flag that checks if this locale is available on
> the host system. If locale is not available error message is show and build
> process is stopped.

 The part that introduces BR2_NEEDS_HOST_EN_US_UTF8_LOCALE and uses it for
BR2_REPRODUCIBLE should be a separate patch. Indeed, when we find a better
solution for the systemd/meson issue, then we can revert this patch, but the
BR2_REPRODUCIBLE bit should stay.

 Regards,
 Arnout

> 
> Signed-off-by: Julius Kriukas <julius@kriukas.lt>
diff mbox series

Patch

diff --git a/Config.in b/Config.in
index 0002df5176..8d471dfb2e 100644
--- a/Config.in
+++ b/Config.in
@@ -94,6 +94,11 @@  config BR2_HOSTARCH_NEEDS_IA32_COMPILER
 config BR2_NEEDS_HOST_UTF8_LOCALE
 	bool
 
+# Hidden boolean selected by packages that explicitly need en_US.UTF-8 locale
+# to be available on host system.
+config BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
+	bool
+
 source "arch/Config.in"
 
 menu "Build options"
diff --git a/package/systemd/Config.in b/package/systemd/Config.in
index 661f40dee4..742b3f1f1d 100644
--- a/package/systemd/Config.in
+++ b/package/systemd/Config.in
@@ -27,6 +27,7 @@  menuconfig BR2_PACKAGE_SYSTEMD
 	select BR2_PACKAGE_BUSYBOX_SHOW_OTHERS # kmod-tools
 	select BR2_PACKAGE_KMOD_TOOLS
 	select BR2_TARGET_TZ_INFO
+        select BR2_NEEDS_HOST_EN_US_UTF8_LOCALE
 	help
 	  systemd is a system and service manager for Linux,
 	  compatible with SysV and LSB init scripts. systemd provides
diff --git a/package/systemd/systemd.mk b/package/systemd/systemd.mk
index 1c31ebb34c..58798f32df 100644
--- a/package/systemd/systemd.mk
+++ b/package/systemd/systemd.mk
@@ -385,23 +385,25 @@  endef
 
 SYSTEMD_NINJA_OPTS = $(if $(VERBOSE),-v) -j$(PARALLEL_JOBS)
 
+SYSTEMD_ENV = $(TARGET_MAKE_ENV) LANG=en_US.UTF-8 LC_ALL=en_US.UTF-8
+
 define SYSTEMD_CONFIGURE_CMDS
 	rm -rf $(@D)/build
 	mkdir -p $(@D)/build
-	$(TARGET_MAKE_ENV) meson $(SYSTEMD_CONF_OPTS) $(@D) $(@D)/build
+	$(SYSTEMD_ENV) meson $(SYSTEMD_CONF_OPTS) $(@D) $(@D)/build
 endef
 
 define SYSTEMD_BUILD_CMDS
-	$(TARGET_MAKE_ENV) ninja $(SYSTEMD_NINJA_OPTS) -C $(@D)/build
+	$(SYSTEMD_ENV) ninja $(SYSTEMD_NINJA_OPTS) -C $(@D)/build
 endef
 
 define SYSTEMD_INSTALL_TARGET_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(TARGET_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
+	$(SYSTEMD_ENV) DESTDIR=$(TARGET_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
 		-C $(@D)/build install
 endef
 
 define SYSTEMD_INSTALL_STAGING_CMDS
-	$(TARGET_MAKE_ENV) DESTDIR=$(STAGING_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
+	$(SYSTEMD_ENV) DESTDIR=$(STAGING_DIR) ninja $(SYSTEMD_NINJA_OPTS) \
 		-C $(@D)/build install
 endef
 
diff --git a/support/dependencies/dependencies.sh b/support/dependencies/dependencies.sh
index 1804e85508..881f07008c 100755
--- a/support/dependencies/dependencies.sh
+++ b/support/dependencies/dependencies.sh
@@ -207,6 +207,19 @@  if grep ^BR2_NEEDS_HOST_UTF8_LOCALE=y $BR2_CONFIG > /dev/null; then
 	fi
 fi
 
+if grep -q ^BR2_NEEDS_HOST_EN_US_UTF8_LOCALE=y $BR2_CONFIG; then
+	if ! which locale > /dev/null ; then
+		echo
+		echo "You need locale support on your build machine"
+		exit 1 ;
+	fi
+	if ! LC_ALL=en_US.UTF-8 locale -c charmap | grep -q '^UTF-8$'; then
+		echo
+		echo "You need en_US.UTF-8 locale suppport on the host system"
+		exit 1 ;
+	fi
+fi
+
 if grep -q ^BR2_NEEDS_HOST_JAVA=y $BR2_CONFIG ; then
 	check_prog_host "java"
 	JAVA_GCJ=$(java -version 2>&1 | grep gcj)