[PATCH] build: cmake: Add input libraries to the rpath.

[Andreas Enge <andreas@enge.fr>]

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In a discussion we had yesterday, Ludovic mentioned the need to pass a
special flag to the cmake configure phase to modify the rpath of installed
libraries, as done for the package slim. I then noticed I needed the same
flag for clucene. The attached patch applies it globally in the cmake build
system. This should also avoid the need for the add-libs-to-runpath phase
in the gmsh package Eric Bavier posted yesterday.

In slim, there is another flag:
    ;; Don't build libslim.so, because then the build
    ;; system is unable to set the right RUNPATH on the
    ;; 'slim' binary.
    "-DBUILD_SHARED_LIBS=OFF"
I wonder if we should instead use another of the rpath setting variables
given at
   http://www.cmake.org/Wiki/CMake_RPATH_handling

Moreover, libclucene-core.so needs to be linked to libclucene-shared.so.1
from the same package. Here we usually employ patchelf, but maybe yet again
a cmake flag could solve the problem directly.

Comments from cmake specialists are very welcome!

Andreas


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From f5089b7ca46ac8199aa89f582efc04f12add8cbc Mon Sep 17 00:00:00 2001
From: Andreas Enge <andreas@enge.fr>
Date: Fri, 25 Apr 2014 09:00:03 +0200
Subject: [PATCH] build: cmake: Add input libraries to the rpath.

* guix/build/cmake-build-system.scm (configure): Add flag.
---
 guix/build/cmake-build-system.scm | 1 +
 1 file changed, 1 insertion(+)

diff --git a/guix/build/cmake-build-system.scm b/guix/build/cmake-build-system.scm
index 7599856..fb07b99 100644
--- a/guix/build/cmake-build-system.scm
+++ b/guix/build/cmake-build-system.scm
@@ -48,6 +48,7 @@
 
     (let ((args `(,srcdir
                   ,(string-append "-DCMAKE_INSTALL_PREFIX=" out)
+                  "-DCMAKE_SKIP_BUILD_RPATH=ON"
                   ,@configure-flags)))
       (setenv "CMAKE_LIBRARY_PATH" (getenv "LIBRARY_PATH"))
       (setenv "CMAKE_INCLUDE_PATH" (getenv "CPATH"))
-- 
1.8.4