RFR: 8327701: Remove the xlc toolchain [v2]

[Magnus Ihse Bursie]

On Mon, 11 Mar 2024 12:27:08 GMT, Joachim Kern <jkern at openjdk.org> wrote:

>> Magnus Ihse Bursie has updated the pull request incrementally with one additional commit since the last revision:
>> 
>>   Revert SEARCH_PATH changes
>
> make/autoconf/toolchain.m4 line 940:
> 
>> 938:   if test "x$OPENJDK_TARGET_OS" = xaix; then
>> 939:     # Make sure we have the Open XL version of clang on AIX
>> 940:     $ECHO "$CC_VERSION_OUTPUT" | $GREP "IBM Open XL C/C++ for AIX" > /dev/null
> 
> This does not work since $CC_VERSION_OUTPUT is unset. We need 
> 	CC_VERSION_OUTPUT=`${XLC_TEST_PATH}ibm-clang++_r --version 2>&1 | $HEAD -n 1`
> before, as in the previous code some lines above which you removed.

Yeah, you are right. I confused it with CC_VERSION_STRING.

... duh.

Actually, that is what I should be using instead.

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PR Review Comment: https://git.openjdk.org/jdk/pull/18172#discussion_r1521667916