> On Mar 28, 2016, at 11:54 AM, Ryan Schmidt <ryandes...@macports.org> wrote:
>
>
>> On Mar 27, 2016, at 7:14 PM, Abdulrahman Alshammari <a.tu...@hotmail.com>
>> wrote:
>>
>> Hey,
>>
>> I am building a porfile of my software. Originally, the software requires at
>> least 1.8 Java version. I have found some portfiles in available ports
>> section, they use pre-fetch to check if the operation system is at least
>> earlier than a certain version. Can I do that for to check for Java version?
>> if yes, How can I perform that ?
>
> You can run commands to determine the java version and compare it against the
> one you need. You would have to code it in such a way that you also account
> for the situation where the user does not have any java version installed. I
> do have java installed, so I'm not completely certain this handles the
> no-java case correctly, but here's some code I came up with:
>
>
> proc javac_version_ok {min_javac_version} {
> if {![catch {set javac_long_version [exec javac -version 2>@1]}]} {
> if {[regexp {^javac (.*)$} $javac_long_version -> javac_version]} {
> return [expr [vercmp $javac_version $min_javac_version] >= 0]
> }
> }
> return NO;
> }
>
> proc check_javac_version {} {
> set min_javac_version 1.8
> if {![javac_version_ok ${min_javac_version}]} {
> global name version
> ui_error "${name} @${version} requires java ${min_javac_version}
> or later"
> return -code error "incompatible java version"
> }
> }
>
> pre-archivefetch {
> check_javac_version
> }
>
> pre-configure {
> check_javac_version
> }
>
>
> Here I'm assuming java is required both at build time and at runtime. If it's
> only needed at build time, then you should not use the pre-archivefetch block
> above.
>
I really appreciate your support. This is helpful. I found a situation similar
to this and he add a simple pre-fetch in his portfile. This is what he did:
re-fetch {
if {${os.platform} eq "darwin" && ${os.major} > 10} {
ui_error "${name} uses deprecated API which has been removed as of Mac OS X
10.7."
return -code error "incompatible Mac OS X version"
}
}
Can I did that to check just the java version? Instead of OS.version?
>
>> Other question is about file dependencies, Z3 is a theorem prover like CVC4.
>> Unfortunately, Z3 is not available as a port. How can I deal with this as
>> file dependency? Please let me know if there is an similar example to my
>> situation?
>
> I don't know what Z3 is, but can you add a port for it?
>
>
I can do a port of this tool but I am wondering about the copyright issue. I
will search on this situation.
Thanks Ryan_______________________________________________
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