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bug#42067: [PATCH] gnu: darktable: Add optional dependencies.

From: Ludovic Courtès
Subject: bug#42067: [PATCH] gnu: darktable: Add optional dependencies.
Date: Mon, 29 Jun 2020 23:59:01 +0200
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/26.3 (gnu/linux)


Vinicius Monego <> skribis:

> [arguments]: Fix opencl-c.h path.
> [native-inputs]: Add opencl-headers, make LLVM version specific.
> [inputs]: Add gmic.

I adjusted the commit log and applied the tiny change below.

>           (add-before 'configure 'prepare-build-environment
>             (lambda* (#:key inputs #:allow-other-keys)
> -             (setenv "CC" "clang") (setenv "CXX" "clang++")))
> +             (setenv "CC" "clang") (setenv "CXX" "clang++")

BTW, why are we building with Clang?



diff --git a/gnu/packages/photo.scm b/gnu/packages/photo.scm
index 5b5e057b65..09767f464e 100644
--- a/gnu/packages/photo.scm
+++ b/gnu/packages/photo.scm
@@ -486,8 +486,9 @@ photographic equipment.")
              ;; Darktable looks for opencl-c.h in the LLVM dir. Guix installs
              ;; it to the Clang dir. We fix this by patching CMakeLists.txt.
              (substitute* "CMakeLists.txt"
-                          (("\\$\\{LLVM_INSTALL_PREFIX\\}")
-                           (assoc-ref %build-inputs "clang")))))
+               (("\\$\\{LLVM_INSTALL_PREFIX\\}")
+                (assoc-ref %build-inputs "clang")))
+             #t))
          (add-before 'configure 'set-LDFLAGS-and-CPATH
            (lambda* (#:key inputs outputs #:allow-other-keys)
              (setenv "LDFLAGS"

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