[PATCH] gnu: gpgme: Patch CMake files.

[Thomas Danckaert]

Hi,

an error (https://bugs.gnupg.org/gnupg/issue2877) in the CMake config 
files for gpgme version 1.80 prevents KWallet (and perhaps other 
packages) from building.  At build time, Make looks for a file 
address@hidden@” instead of “libgpgme.so” (see 
http://hydra.gnu.org/build/1748813/nixlog/1/raw).

The attached patch works around the problem by simply substituting 
address@hidden@” with “.so”.  This works for KWallet on my system, but 
I'm not sure if this is the right strategy (on all supported 
platforms).  Can someone with CMake-fu judge if this an acceptable 
solution until a new version of gnupg is available (or propose a 
better solution, of course)?

Thomas

>From 48f3064d3a66dfae7890308a537c205824e440c6 Mon Sep 17 00:00:00 2001
From: Thomas Danckaert <address@hidden>
Date: Fri, 6 Jan 2017 16:52:41 +0100
Subject: [PATCH] gnu: gpgme: Patch CMake files.

* gnu/packages/gnupg.scm (gpgme)[arguments]: Substitute '@libsuffix@' by
  '.so'.
---
 gnu/packages/gnupg.scm | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/gnu/packages/gnupg.scm b/gnu/packages/gnupg.scm
index 56fba45..8feb40c 100644
--- a/gnu/packages/gnupg.scm
+++ b/gnu/packages/gnupg.scm
@@ -370,6 +370,13 @@ libskba (working with X.509 certificates and CMS data).")
     (inputs
      `(("gnupg" ,gnupg-2.0)
        ("libassuan" ,libassuan)))
+    (arguments
+     `(#:phases
+       (modify-phases %standard-phases
+         (add-after 'configure 'patch-cmake-file
+           (lambda _
+             (substitute* "lang/cpp/src/GpgmeppConfig.cmake.in"
+               (("@libsuffix@") ".so")))))))
     (home-page "https://www.gnupg.org/related_software/gpgme/";)
     (synopsis "Library providing simplified access to GnuPG functionality")
     (description
-- 
2.7.4