Date: Fri, 16 Nov 2001 11:42:08 +0100 From: Ernst de Haan <znerd@freebsd.org> To: John Merryweather Cooper <john_m_cooper@yahoo.com>, freebsd-java@freebsd.org Cc: freebsd-ports@freebsd.org Subject: Re: A Modest Proposal for Java(tm) dependency selection among ports Message-ID: <200111161042.fAGAg8V55897@zaphod.euronet.nl> In-Reply-To: <20011115130202.E33074@johncoop.MSHOME> References: <20011115130202.E33074@johncoop.MSHOME>
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John,
The problem you are addressing is one that has been discussed a few times
before. But up until now, no solution was implemented. Now that I'm a member
of the FreeBSD Project, I'm determined to find a solution for this. :-)
> bsd.port.mk (probably through a bsd.java.mk) would provide the
> following knobs:
So far this sounds good.
> USE_JAVA=[yes|no] knob will succeed on any of JDK's 1.3.1,
> 1.2.2, or 1.1.8 IN THAT ORDER (latest
> version first)
> USE_JAVA2=[yes|no] knob will succeed on either JDK 1.3.1 or
> 1.2.2 IN THAT ORDER
> USE_JAVA11=[yes|no] knob will succeed on ONLY JDK 1.1.8
I'm suggestion a solution that's a bit different: If a port wants to use
Java, then it should set either of the following flags:
[ Note that a JDK is a JRE plus development tools ]
USE_JAVA=[yes|no] --> This port needs any JRE/JDK, version 1.1 or higher. If
a JRE/JDK is installed, then this port will succeed. If not, then any JRE
will be installed. The preference order for a JRE/JDK to be installed is
stored somewhere in /usr/ports/Mk and it should be possible to override this
setting in some config file, similar to the way the order for GNOME download
sites can be tweaked.
Preferrably the order should take the following rules into account:
[1] A JRE/JDK with a higher version number is preferred over one with a lower
version number
[2] A native FreeBSD JDK/JRE is preferred over a non-native JDK
[3] A JRE/JDK that has no dependencies on other JDKs is preferred over a JDK
that does
[4] A JRE/JDK that can be installed without fetching any files manually is
preferred over one that fails with a message like "You must manually fetch
the <MANUFACTURER> JDK from <URL>, place it in /usr/ports/distfiles and then
run make again"
[5] A JRE is preferred over a JDK
USE_JAVA_1_1=[yes|no] --> This is synonymous to USE_JAVA
USE_JAVA_1_2=[yes|no] --> This port needs any JRE/JDK (1.2+). If a JRE/JDK
1.2 port is installed, then this port will install, otherwise it will fail,
*or* (preferrably!!!!) install a JRE/JDK, using the rules layed out above
USE_JAVA_1_3=[yes|no] --> Similar to USE_JAVA_1_2, but then 1.3 i.s.o. 1.2
USE_JAVA_1_4=[yes|no] --> Similar to USE_JAVA_1_3, but for 1.4 i.s.o. 1.3
USE_JDK=[yes|no] --> Similar for USE_JAVA, but now mandates a JDK, just a JRE
won't do
USE_JDK_11=[yes|no] --> Synonym for USE_JDK
USE_JDK_12=[yes|no] --> See USE_JDK_11, but for 1.2 i.s.o. 1.1
USE_JDK_13=[yes|no] --> See USE_JDK_12, but for 1.3 i.s.o. 1.2
USE_JDK_14=[yes|no] --> See USE_JDK_13, but for 1.4 i.s.o. 1.3
> WANT_LINUX_JAVA=[yes|no]
> same as above except Linux version Java's
> are used and USE_JAVA11 will abort build.
I suggest not introducing this flag in the first phase. We can discuss it's
usefullness later.
> WANT_JRE_ONLY=[yes|no]
> same as above except a JRE will be used
> instead of a JDK, if available
See above proposed solution.
> JAVA_VER reports Java(tm) detected or built by
> USE_JAVA*
Hmm, what *exactly* would you like this variable to return as its value?
Ernst
--
Ernst de Haan
EuroNet Internet B.V.
"Come to me all who are weary and burdened
and I will give you rest" -- Jesus Christ
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