Configure broken on MIPS when uname returns mipsel or mips64el

[Erik Joelsson]

Hello Ao Qi,

Due to licensing reasons, we are unable to directly update the 
autoconf-config.guess file. Instead we have the wrapper, config.guess in 
which we make adjustments to the result returned by 
autoconf-config.guess. Your fix needs to go in the wrapper file.

/Erik


On 2018-05-23 03:18, Ao Qi wrote:
> Hi all,
> I tried to configure jdk/jdk on MIPS, but I failed. The output of configure:
> ...
> checking for pandoc... no
> checking build system type...
> /home/loongson/aoqi/jdk/make/autoconf/build-aux/config.guess: unable
> to guess system type
>
> This script, last modified 2012-02-10, has failed to recognize
> the operating system you are using. It is advised that you
> download the most up to date version of the config scripts from
>
>    http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.guess;hb=HEAD
> and
>    http://git.savannah.gnu.org/gitweb/?p=config.git;a=blob_plain;f=config.sub;hb=HEAD
>
> If the version you run
> (/home/loongson/aoqi/jdk/make/autoconf/build-aux/config.guess) is
> already up to date, please
> send the following data and any information you think might be
> pertinent to <config-patches at gnu.org> in order to provide the needed
> information to handle your system.
>
> config.guess timestamp = 2012-02-10
>
> uname -m = mips64el
> uname -r = 3.10.0-693.5.2.ns7.032.mips64el
> uname -s = Linux
> uname -v = #1 SMP PREEMPT Fri Dec 29 16:42:48 CST 2017
>
> /usr/bin/uname -p = mips64el
> /bin/uname -X     =
>
> hostinfo               =
> /bin/universe          =
> /usr/bin/arch -k       =
> /bin/arch              = mips64el
> /usr/bin/oslevel       =
> /usr/convex/getsysinfo =
>
> UNAME_MACHINE = mips64el
> UNAME_RELEASE = 3.10.0-693.5.2.ns7.032.mips64el
> UNAME_SYSTEM  = Linux
> UNAME_VERSION = #1 SMP PREEMPT Fri Dec 29 16:42:48 CST 2017
> configure: error: cannot guess build type; you must specify one
> configure exiting with result code 1
> ...
>
> I think the reason is that uname returns mips64el.
> autoconf-config.guess can handle mips and mips64, but cannot handle
> mipsel and mips64el.
> I made a patch to pass the configure:
>
> $ hg diff
> diff -r 31361382634b make/autoconf/build-aux/autoconf-config.guess
> --- a/make/autoconf/build-aux/autoconf-config.guess Tue May 22
> 10:08:04 2018 -0700
> +++ b/make/autoconf/build-aux/autoconf-config.guess Wed May 23
> 18:06:52 2018 +0800
> @@ -977,6 +977,9 @@
>    eval `$CC_FOR_BUILD -E $dummy.c 2>/dev/null | grep '^CPU'`
>    test x"${CPU}" != x && { echo "${CPU}-unknown-linux-gnu"; exit; }
>    ;;
> +    mipsel:Linux:*:* | mips64el:Linux:*:*)
> + echo ${UNAME_MACHINE}-unknown-linux-gnu
> + exit ;;
>       or32:Linux:*:*)
>    echo ${UNAME_MACHINE}-unknown-linux-gnu
>    exit ;;
>
>
> I think ppc has the same problem, but it is fixed in
> make/autoconf/build-aux/config.guess.
>
> Thanks,
> Ao Qi