Date: Sat, 21 Apr 2012 12:12:53 +0200 From: Marcus von Appen <mva@FreeBSD.org> To: freebsd-ports@freebsd.org Cc: python@freebsd.org Subject: USE_PYTHON usage shadows dependency requirements and creates conflicts Message-ID: <20120421101253.GA1496@medusa.sysfault.org>
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Hi,
I stumbled upon an interesting issue today, which might have been
discussed at length earlier, but I was unable to find any reference so
far.
Using USE_PYTHON=3Dx.y in a port A, which has a dependency on another port
B, which also defines USE_PYTHON=3Dq.w will cause a IGNORE to be raised
=66rom bsd.python.mk, since _PYTHON_VERSION_NONSUPPORTED gets set to
whatever the USE_PYTHON value from port A was.
Test case:
Create 2 directories, /usr/ports/devel/fake1 and /usr/ports/devel/fake2
Add the Makefiles (diffs below) to both:
diff -Nur /nonexistent/Makefile fake1/Makefile
--- /nonexistent/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ fake1/Makefile 2012-04-21 11:55:05.000000000 +0200
@@ -0,0 +1,9 @@
+PORTNAME=3D fake1
+PORTVERSION=3D 1
+CATEGORIES=3D devel
+
+LIB_DEPENDS=3D fake2.0:${PORTSDIR}/devel/fake2
+
+USE_PYTHON=3D 3.2
+
+.include <bsd.port.mk>
diff -Nur /nonexistent/Makefile fake2/Makefile
--- /nonexistent/Makefile 1970-01-01 01:00:00.000000000 +0100
+++ fake2/Makefile 2012-04-21 11:55:13.000000000 +0200
@@ -0,0 +1,6 @@
+PORTNAME=3D fake2
+PORTVERSION=3D 1
+
+USE_PYTHON=3D 2.5-3.1
+
+.include <bsd.port.mk>
Execute make depends in /usr/ports/devel/fake1.
/usr/ports/devel/fake1 # make depends
=3D=3D=3D> fake1-1 depends on shared library: fake2.0 - not found
=3D=3D=3D> Verifying install for fake2.0 in /usr/ports/devel/fake2
=3D=3D=3D> fake2-1 needs Python 3.1 at most. But you specified 3.2.
*** Error code 1
Stop in /usr/ports/devel/fake2.
*** Error code 1
Stop in /usr/ports/devel/fake1.
Installing fake2 before fake1 will circumvent the problem, which however
does not help the typical ports tree user.
It looks to me like we have an isolation issue for environment/make
variables here. Could other parts be affected, too or can we assume that
this issue solely affects bsd.python.mk at the moment?
Regards
Marcus
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