[bug#43620] [PATCH 2/2] gnu: Add folly.

[Greg Hogan <code@greghogan.com>]

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This patch depends on #43619

Reworded synopsis and description. Updated to newest version. Limited to
64-bit architectures.

From 8e3df10ad8aa791e34a5a5abcaabe0438f7b063a Mon Sep 17 00:00:00 2001
From: Greg Hogan <code@greghogan.com>
Date: Tue, 22 Sep 2020 15:22:32 +0000
Subject: [PATCH] gnu: Add folly.

* gnu/packages/cpp.scm (folly): New variable.
---
 gnu/local.mk                                  |  1 +
 gnu/packages/cpp.scm                          | 61 +++++++++++++++++++
 .../patches/folly-add-missing-include.patch   | 10 +++
 3 files changed, 72 insertions(+)
 create mode 100644 gnu/packages/patches/folly-add-missing-include.patch

diff --git a/gnu/local.mk b/gnu/local.mk
index 83d2d72ab1..155de6c590 100644
--- a/gnu/local.mk
+++ b/gnu/local.mk
@@ -966,6 +966,7 @@ dist_patch_DATA = \
   %D%/packages/patches/findutils-localstatedir.patch \
   %D%/packages/patches/findutils-test-rwlock-threads.patch \
   %D%/packages/patches/flann-cmake-3.11.patch \
+  %D%/packages/patches/folly-add-missing-include.patch \
   %D%/packages/patches/foobillard++-pkg-config.patch \
   %D%/packages/patches/foomatic-filters-CVE-2015-8327.patch \
   %D%/packages/patches/foomatic-filters-CVE-2015-8560.patch \
diff --git a/gnu/packages/cpp.scm b/gnu/packages/cpp.scm
index d3daae74c0..680a2ad520 100644
--- a/gnu/packages/cpp.scm
+++ b/gnu/packages/cpp.scm
@@ -41,12 +41,22 @@
   #:use-module (guix build-system python)
   #:use-module (gnu packages)
   #:use-module (gnu packages autotools)
+  #:use-module (gnu packages boost)
   #:use-module (gnu packages check)
   #:use-module (gnu packages code)
   #:use-module (gnu packages compression)
+  #:use-module (gnu packages crypto)
+  #:use-module (gnu packages gcc)
+  #:use-module (gnu packages libevent)
+  #:use-module (gnu packages libunwind)
+  #:use-module (gnu packages linux)
   #:use-module (gnu packages llvm)
+  #:use-module (gnu packages logging)
+  #:use-module (gnu packages maths)
   #:use-module (gnu packages perl)
   #:use-module (gnu packages pkg-config)
+  #:use-module (gnu packages popt)
+  #:use-module (gnu packages pretty-print)
   #:use-module (gnu packages tls)
   #:use-module (gnu packages web))

@@ -669,3 +679,54 @@ parsers according to a Parsing Expression Grammar
(PEG).")
 standard GNU style syntax for options.")
     (home-page "https://github.com/jarro2783/cxxopts/wiki")
     (license license:expat)))
+
+(define-public folly
+  (package
+    (name "folly")
+    (version "2020.10.05.00")
+    (source (origin
+              (method git-fetch)
+              (uri (git-reference
+                    (url "https://github.com/facebook/folly")
+                    (commit (string-append "v" version))))
+              (file-name (git-file-name name version))
+              (sha256
+               (base32
+                "0q4w4cvjxffc462hvs8h4zryq4965j7015zvkwagcm6cj6wmz3cn"))
+              (patches (search-patches
"folly-add-missing-include.patch"))))
+    (build-system cmake-build-system)
+    (arguments
+     '(;; Tests must be explicitly enabled
+       ;#:configure-flags
+       ;'("-DBUILD_TESTS=ON")))
+       ;; Leave tests disabled; see
https://github.com/facebook/folly/issues/1456
+       #:tests? #f))
+    (propagated-inputs
+     `(("boost" ,boost)
+       ("gflags" ,gflags)
+       ("glog" ,glog)
+       ("liburing" ,liburing)))
+    (inputs
+     `(("bzip2" ,bzip2)
+       ("double-conversion" ,double-conversion)
+       ("fmt" ,fmt)
+       ("libaio" ,libaio)
+       ("libevent" ,libevent)
+       ("libiberty" ,libiberty)
+       ("libsodium" ,libsodium)
+       ("libunwind" ,libunwind)
+       ("lz4" ,lz4)
+       ("openssl" ,openssl)
+       ("snappy" ,snappy)
+       ("zlib" ,zlib)
+       ("zstd" ,zstd "lib")))
+    (native-inputs
+     `(("googletest" ,googletest)))
+    (synopsis "Collection of C++ components complementing the standard
library")
+    (description
+     "Folly (acronymed loosely after Facebook Open Source Library) is a
library
+of C++14 components which complements @code{std} and Boost.")
+    (home-page "https://github.com/facebook/folly/wiki")
+    ; 32-bit is not supported: https://github.com/facebook/folly/issues/103
+    (supported-systems '("aarch64" "x86_64-linux"))
+    (license license:asl2.0)))
diff --git a/gnu/packages/patches/folly-add-missing-include.patch
b/gnu/packages/patches/folly-add-missing-include.patch
new file mode 100644
index 0000000000..929239233f
--- /dev/null
+++ b/gnu/packages/patches/folly-add-missing-include.patch
@@ -0,0 +1,10 @@
+--- a/folly/concurrency/test/AtomicSharedPtrTest.cpp
++++ b/folly/concurrency/test/AtomicSharedPtrTest.cpp
+@@ -27,6 +27,7 @@
+ #include <folly/concurrency/AtomicSharedPtr.h>
+ #include <folly/concurrency/test/AtomicSharedPtrCounted.h>
+ #include <folly/portability/GTest.h>
++#include <folly/portability/GFlags.h>
+
+ #include <folly/test/DeterministicSchedule.h>
+
-- 
2.28.0

On Tue, Sep 29, 2020 at 4:46 PM Ludovic Courtès <ludo@gnu.org> wrote:

> Greg Hogan <code@greghogan.com> skribis:
>
> >>From 2835c2ac08db9b5887bcc33a3c15e84f26111864 Mon Sep 17 00:00:00 2001
> > From: Greg Hogan <code@greghogan.com>
> > Date: Tue, 22 Sep 2020 15:22:32 +0000
> > Subject: [PATCH 2/2] gnu: Add folly.
> >
> > * gnu/packages/cpp.scm (folly): New variable.
>
> [...]
>
> > +              (file-name (git-file-name name version))
> > +              (sha256
> > +               (base32
> > +                "0ppd02scbi4a52s99par4i17cys4z8gangpxa86yma48k72z5xvs"))
> > +              (patches (search-patches
> > "folly-add-missing-include.patch"))))
>
> Looks like your mail client mangled the patch.
>
> > +    (synopsis "An open-source C++ library developed and used at
> Facebook")
>
> Everything is free software in here, no need to write it.  Also, please
> remove the initial article and somehow say what the library provides in
> terms of features:
>
>   https://guix.gnu.org/manual/en/html_node/Synopses-and-Descriptions.html
>
> > +    (description
> > +     "Folly (acronymed loosely after Facebook Open Source Library) is a
> > library
> > +  of C++14 components designed with practicality and efficiency in mind.
> > Folly
> > +  contains a variety of core library components used extensively at
> > Facebook. In
> > +  particular, it's often a dependency of Facebook's other open source
> C++
> > efforts
> > +  and place where those projects can share code.
> > +
> > +  It complements (as opposed to competing against) offerings such as
> Boost
> > and of
> > +  course std. In fact, we embark on defining our own component only when
> > +  something we need is either not available, or does not meet the needed
> > +  performance profile. We endeavor to remove things from folly if or
> when
> > std or
> > +  Boost obsoletes them.
> > +
> > +  Performance concerns permeate much of Folly, sometimes leading to
> > designs that
> > +  are more idiosyncratic than they would otherwise be (see e.g.
> > PackedSyncPtr.h,
> > +  SmallLocks.h). Good performance at large scale is a unifying theme in
> > all of Folly.")
>
> I’d strip all but one reference to Facebook, we’re not an advertising
> project.  :-)
>
> Nitpick: please remove “open source”, avoid marketing terms
> (“competing”, “offerings”, etc.), write @code{std}, @file{SmallLocks.h}
> and similar.
>
> Could you send an updated patch?
>
> Thank you!
>
> Ludo’.
>

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