RFR: JDK-8271142: package help is not displayed for missing X11/extensions/Xrandr.h [v2]

[Christoph Langer]

On Fri, 23 Jul 2021 14:04:35 GMT, Matthias Baesken <mbaesken at openjdk.org> wrote:

>> Please review the following change.
>> On SUSE Linux 15 configure was running into this error, because of a missing X11 header :
>> 
>> checking for X11/extensions/Xrandr.h... no
>> configure: error: Could not find all X11 headers (shape.h Xrender.h Xrandr.h XTest.h Intrinsic.h).
>> 
>> I wondered about the missing package help output, we should display some hint what packages are missing.
>> In help.m4,  PKGHANDLER was detected as /usr/bin/zypper .
>> However only the exact string zypper is checked, this should be relaxed.
>> Afterwards, the package - help  was working nicely :
>> 
>> checking for X11/extensions/Xrandr.h... no
>> configure: error: Could not find all X11 headers (shape.h Xrender.h Xrandr.h XTest.h Intrinsic.h).
>> You might be able to fix this by running 'sudo zypper install libX11-devel libXext-devel libXrender-devel libXrandr-devel libXtst-devel libXt-devel libXi-devel'.
>
> Matthias Baesken has updated the pull request incrementally with one additional commit since the last revision:
> 
>   Deal with other package handler tools

Looks good.

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Marked as reviewed by clanger (Reviewer).

PR: https://git.openjdk.java.net/jdk/pull/4873