[petsc] 01/03: use virtual libpetsc3.7 package for shlib dependencies

[Drew Parsons]

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dparsons pushed a commit to tag debian/3.7.4+dfsg1-2
in repository petsc.

commit fd1cfbe2a73e39c75af91767454e0cc79b462f09
Author: Drew Parsons <dparsons at debian.org>
Date:   Fri Oct 14 16:57:54 2016 +0800

    use virtual libpetsc3.7 package for shlib dependencies
    
    Handle shlibs dependencies via virtual libpetsc3.7 and
    libpetsc-complex-3.7 packages.
    
    The .Z in 3.7.Z is not used in sonames, but we need .Z in binary
    package names because of the upstream directory structure (which
    specifies 3.7.Z).
    
    That is, we want libpetsc3.7.Z-dev to be coinstallable for different
    .Z (since coinstallibility is facilitated by upstream).  But it is not
    convenient for client packages to have to depend on libpetsc3.7.Z when
    libpetsc3.7 would do.
    
    Without this shlib patch, either client programs such as petsc4py have
    to be recompiled with every .Z patch release, or the older
    libpetsc3.7.(Z-1) package needs to be retained until the client
    package gets rebuilt.  Neither of these are desirable situations.
    
    The version of .Z which is actually used by the client program is
    controlled by alternatives for libpetsc.so.3.7 (or
    libpetsc_complex.so.3.7)
---
 debian/changelog                     | 12 ++++++++++++
 debian/control                       |  2 ++
 debian/libpetsc-complex-3.7.4.shlibs |  1 +
 debian/libpetsc3.7.4.shlibs          |  1 +
 4 files changed, 16 insertions(+)

diff --git a/debian/changelog b/debian/changelog
index fd39352..52cf6b1 100644
--- a/debian/changelog
+++ b/debian/changelog
@@ -1,3 +1,15 @@
+petsc (3.7.4+dfsg1-2) UNRELEASED; urgency=medium
+
+  * Handle shlibs dependencies via virtual libpetsc3.7 and
+    libpetsc-complex-3.7 packages. The .Z in 3.7.Z is not used in
+    sonames, but we need .Z in binary packages because of the upstream
+    directory structure.
+    When different libpetsc3.7.Z are installed, the preferred version
+    is controlled by alternatives for libpetsc3.7 (likewise for
+    libpetsc_complex.so.3.7).
+
+ -- Drew Parsons <dparsons at debian.org>  Fri, 14 Oct 2016 16:43:26 +0800
+
 petsc (3.7.4+dfsg1-1) unstable; urgency=medium
 
   * New upstream version.
diff --git a/debian/control b/debian/control
index 1cdfa3b..3f38d35 100644
--- a/debian/control
+++ b/debian/control
@@ -82,6 +82,7 @@ Package: libpetsc3.7.4
 Architecture: any
 Multi-Arch: same
 Section: libs
+Provides: libpetsc3.7
 Pre-Depends: ${misc:Pre-Depends}
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Conflicts: libpetsc3.6 (<< 3.6.2.dfsg1-4)
@@ -188,6 +189,7 @@ Package: libpetsc-complex-3.7.4
 Architecture: any
 Multi-Arch: same
 Section: libs
+Provides: libpetsc-complex-3.7
 Pre-Depends: ${misc:Pre-Depends}
 Depends: ${shlibs:Depends}, ${misc:Depends}
 Conflicts: libpetsc-complex-3.6 (<< 3.6.2.dfsg1-4)
diff --git a/debian/libpetsc-complex-3.7.4.shlibs b/debian/libpetsc-complex-3.7.4.shlibs
new file mode 100644
index 0000000..7ed3d99
--- /dev/null
+++ b/debian/libpetsc-complex-3.7.4.shlibs
@@ -0,0 +1 @@
+libpetsc_complex 3.7 libpetsc-complex-3.7
diff --git a/debian/libpetsc3.7.4.shlibs b/debian/libpetsc3.7.4.shlibs
new file mode 100644
index 0000000..0e7c3bd
--- /dev/null
+++ b/debian/libpetsc3.7.4.shlibs
@@ -0,0 +1 @@
+libpetsc_real 3.7 libpetsc3.7

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