gnu: Add reproc.

* gnu/packages/cpp.scm (reproc): New variable.

Signed-off-by: Ludovic Courtès <ludo@gnu.org>

gnu/packages/cpp.scm

@@ -13,6 +13,7 @@
 ;;; Copyright © 2020 Vinicius Monego <monego@posteo.net>
 ;;; Copyright © 2020 Marius Bakke <marius@gnu.org>
 ;;; Copyright © 2020 Michael Rohleder <mike@rohleder.de>
+;;; Copyright © 2020 Alexandros Theodotou <alex@zrythm.org>
 ;;;
 ;;; This file is part of GNU Guix.
 ;;;
@@ -493,6 +494,36 @@ it's own version of the tool, this is a fork that aims to be more responsive
 and make @code{cpplint} usable in wider contexts.")
     (license license:bsd-3)))
 
+(define-public reproc
+  (package
+    (name "reproc")
+    (version "14.1.0")
+    (source
+      (origin
+        (method git-fetch)
+        (uri (git-reference
+               (url "https://github.com/DaanDeMeyer/reproc")
+               (commit (string-append "v" version))))
+        (file-name (git-file-name name version))
+        (sha256
+          (base32
+            "1n71wb50qv2dmhjgw7azx5gigbrp19l2n3d41g9p05l5l0y1qg0q"))))
+   (build-system cmake-build-system)
+   (arguments
+      ;; No tests.
+    `(#:tests? #f
+      ;; Enable building of shared library.
+      #:configure-flags `("-DBUILD_SHARED_LIBS=1")))
+   (native-inputs
+    `(("pkg-config" ,pkg-config)))
+   (synopsis "Process IO library")
+   (description "reproc (Redirected Process) is a C/C++ library that
+simplifies starting, stopping and communicating with external programs.  The
+main use case is executing command line applications directly from C or C++
+code and retrieving their output.")
+   (home-page "https://github.com/DaanDeMeyer/reproc")
+   (license license:expat)))
+
 (define-public sobjectizer
   (package
     (name "sobjectizer")