Configure broken on MIPS when uname returns mipsel or mips64el

[Ao Qi]

Hi Erik,

Thanks for your comments. I made a new patch:

$ hg diff
diff -r 31361382634b make/autoconf/build-aux/config.guess
--- a/make/autoconf/build-aux/config.guess Tue May 22 10:08:04 2018 -0700
+++ b/make/autoconf/build-aux/config.guess Thu May 24 09:07:17 2018 +0800
@@ -86,6 +86,17 @@
   fi
 fi

+# Test and fix little endian MIPS.
+if [ "x$OUT" = x ]; then
+  if [ `uname -s` = Linux ]; then
+    if [ `uname -m` = mipsel ]; then
+      OUT=mipsel-unknown-linux-gnu
+    elif [ `uname -m` = mips64el ]; then
+      OUT=mips64el-unknown-linux-gnu
+    fi
+  fi
+fi
+
 # Test and fix cpu on Macosx when C preprocessor is not on the path
 echo $OUT | grep i386-apple-darwin > /dev/null 2> /dev/null
 if test $? = 0; then

Cheers,
Ao Qi

2018-05-24 0:19 GMT+08:00 Erik Joelsson <erik.joelsson at oracle.com>:
> 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
>
>