[Buildroot] [PATCH 1/1] package/nginx: override endianness

Arnout Vandecappelle arnout at mind.be
Tue Aug 31 16:39:36 UTC 2021



On 31/08/2021 18:19, Nevo Hed wrote:
> Yes Arnout, That link is my report to nginx.
> 
> I will add that comment to my patch, but quick question -
> will that go on my inner or outer patch?

 The inner patch.

> I don't see the word 'upstream' in any of the current nginx patches and most of
> them deal with unsupported cross-compilation

 Most of the patches are very old and we didn't have that "rule" back then. The
rule is also not very strict - we often overlook it while applying.


 Note: small changes like this (and the spelling fixes in the commit message) we
can make while applying, but of course it's much appreciated if you send a v2
with all the fixes.

 Regards,
 Arnout

> 
> 
> On Tue, Aug 31, 2021 at 9:45 AM Arnout Vandecappelle <arnout at mind.be
> <mailto:arnout at mind.be>> wrote:
> 
> 
> 
>     On 30/08/2021 22:53, Nevo Hed wrote:
>     > Though several patches exist in buildroot's nginx package dir they do
>     > not seem to address endianness.
>     >
>     > The test program generated my the script compiles but fails to run (as
>     > it is built for another architecture) but the script does not
>     > distinguish between the failure to run the program and an indication
>     > of certain endianness.  As such the fallback of big-endian is used.
>     > This setting then causes http2 headers (anything not in the satic
>     > dictionary) to come out as undecipherble trash.
>     >
>     > This commit includes a patch to the configure script to allow a
>     > `--force-endianness=big|little` flag as as setting that flag in
>     > buildroot's package makefile.
>     >
>     > Signed-off-by: Nevo Hed <nhed+buildroot at starry.com
>     <mailto:nhed%2Bbuildroot at starry.com>>
>     > ---
>     >  ...-of-endianness-for-cross-compilation.patch | 115 ++++++++++++++++++
>     >  package/nginx/nginx.mk <http://nginx.mk>                        |   1 +
>     >  2 files changed, 116 insertions(+)
>     >  create mode 100644
>     package/nginx/0010-Allow-forcing-of-endianness-for-cross-compilation.patch
>     >
>     > diff --git
>     a/package/nginx/0010-Allow-forcing-of-endianness-for-cross-compilation.patch
>     b/package/nginx/0010-Allow-forcing-of-endianness-for-cross-compilation.patch
>     > new file mode 100644
>     > index 0000000000..137ff6ea5d
>     > --- /dev/null
>     > +++
>     b/package/nginx/0010-Allow-forcing-of-endianness-for-cross-compilation.patch
>     > @@ -0,0 +1,115 @@
>     > +From b1a6b13d8ac2cade71bae508c7d20fbee6807e4e Mon Sep 17 00:00:00 2001
>     > +From: Nevo Hed <nhed+buildroot at starry.com
>     <mailto:nhed%2Bbuildroot at starry.com>>
>     > +Date: Mon, 30 Aug 2021 13:28:13 -0400
>     > +Subject: [PATCH] Allow forcing of endianness for cross-compilation
>     > +
>     > +Signed-off-by: Nevo Hed <nhed+buildroot at starry.com
>     <mailto:nhed%2Bbuildroot at starry.com>>
> 
>      Ideally, you should have sent the patch upstream and you should add a reference
>     to the upstream contribution. In this case, it can be as simple as:
> 
>     Upstream-status: Invalid (upstream doesn't support cross-compilation)
>     See https://trac.nginx.org/nginx/ticket/2240
>     <https://trac.nginx.org/nginx/ticket/2240>
> 
> 
>      Regards,
>      Arnout
> 
>     > +---
>     > + auto/endianness | 61 ++++++++++++++++++++++++++++++++-----------------
>     > + auto/options    |  6 +++++
>     > + 2 files changed, 46 insertions(+), 21 deletions(-)
>     > +
>     > +diff --git a/auto/endianness b/auto/endianness
>     > +index 1b552b6b..4b2a3cd7 100644
>     > +--- a/auto/endianness
>     > ++++ b/auto/endianness
>     > +@@ -26,25 +26,44 @@ int main(void) {
>     > +
>     > + END
>     > +
>     > +-ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
>     > +-          -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT $ngx_feature_libs"
>     > +-
>     > +-eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"
>     > +-
>     > +-if [ -x $NGX_AUTOTEST ]; then
>     > +-    if $NGX_AUTOTEST >/dev/null 2>&1; then
>     > +-        echo " little endian"
>     > ++case "${NGX_FORCE_ENDIANNESS}" in
>     > ++    little)
>     > ++        echo " little endian (forced)"
>     > +         have=NGX_HAVE_LITTLE_ENDIAN . auto/have
>     > +-    else
>     > +-        echo " big endian"
>     > +-    fi
>     > +-
>     > +-    rm -rf $NGX_AUTOTEST*
>     > +-
>     > +-else
>     > +-    rm -rf $NGX_AUTOTEST*
>     > +-
>     > +-    echo
>     > +-    echo "$0: error: cannot detect system byte ordering"
>     > +-    exit 1
>     > +-fi
>     > ++    ;;
>     > ++
>     > ++    big)
>     > ++        echo " big endian (forced)"
>     > ++    ;;
>     > ++
>     > ++    "")
>     > ++        ngx_test="$CC $CC_TEST_FLAGS $CC_AUX_FLAGS \
>     > ++                  -o $NGX_AUTOTEST $NGX_AUTOTEST.c $NGX_LD_OPT
>     $ngx_feature_libs"
>     > ++
>     > ++        eval "$ngx_test >> $NGX_AUTOCONF_ERR 2>&1"
>     > ++
>     > ++        if [ -x $NGX_AUTOTEST ]; then
>     > ++            if $NGX_AUTOTEST >/dev/null 2>&1; then
>     > ++                echo " little endian"
>     > ++                have=NGX_HAVE_LITTLE_ENDIAN . auto/have
>     > ++            else
>     > ++                echo " big endian"
>     > ++            fi
>     > ++
>     > ++            rm -rf $NGX_AUTOTEST*
>     > ++
>     > ++        else
>     > ++            rm -rf $NGX_AUTOTEST*
>     > ++
>     > ++            echo
>     > ++            echo "$0: error: cannot detect system byte ordering"
>     > ++            exit 1
>     > ++        fi
>     > ++    ;;
>     > ++
>     > ++    *)
>     > ++        echo
>     > ++        echo "$0: error: invalid
>     \"--force-endianness=${NGX_FORCE_ENDIANNESS}\""
>     > ++        exit 1
>     > ++    ;;
>     > ++esac
>     > +diff --git a/auto/options b/auto/options
>     > +index 80be906e..85a06456 100644
>     > +--- a/auto/options
>     > ++++ b/auto/options
>     > +@@ -17,6 +17,8 @@ NGX_USER=
>     > + NGX_GROUP=
>     > + NGX_BUILD=
>     > +
>     > ++NGX_FORCE_ENDIANNESS=
>     > ++
>     > + CC=${CC:-cc}
>     > + CPP=
>     > + NGX_OBJS=objs
>     > +@@ -196,6 +198,8 @@ do
>     > +         --user=*)                        NGX_USER="$value"          ;;
>     > +         --group=*)                       NGX_GROUP="$value"         ;;
>     > +
>     > ++        --force-endianness=*)            NGX_FORCE_ENDIANNESS="$value" ;;
>     > ++
>     > +         --crossbuild=*)                  NGX_PLATFORM="$value"      ;;
>     > +
>     > +         --build=*)                       NGX_BUILD="$value"         ;;
>     > +@@ -432,6 +436,8 @@ cat << END
>     > +   --build=NAME                       set build name
>     > +   --builddir=DIR                     set build directory
>     > +
>     > ++  --force-endianness=<big>|<little>  force endianness
>     > ++
>     > +   --with-select_module               enable select module
>     > +   --without-select_module            disable select module
>     > +   --with-poll_module                 enable poll module
>     > +--
>     > +2.31.1
>     > +
>     > diff --git a/package/nginx/nginx.mk <http://nginx.mk>
>     b/package/nginx/nginx.mk <http://nginx.mk>
>     > index 1f996cc613..31b6e276b7 100644
>     > --- a/package/nginx/nginx.mk <http://nginx.mk>
>     > +++ b/package/nginx/nginx.mk <http://nginx.mk>
>     > @@ -49,6 +49,7 @@ NGINX_CONF_ENV += \
>>     >  # prefix: nginx root configuration location
>     >  NGINX_CONF_OPTS += \
>     > +     --force-endianness=$(call qstrip,$(call LOWERCASE,$(BR2_ENDIAN))) \
>     >       --prefix=/usr \
>     >       --conf-path=/etc/nginx/nginx.conf \
>     >       --sbin-path=/usr/sbin/nginx \
>     >
> 


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