gnu: Add fifo-map.

* gnu/packages/cpp.scm (fifo-map): New variable.
* gnu/packages/patches/fifo-map-fix-flags-for-gcc.patch: New file.
* gnu/packages/patches/fifo-map-remove-catch.hpp.patch: New file.
* gnu/local.mk: Add new patch files.

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

gnu/local.mk

@@ -661,6 +661,8 @@ dist_patch_DATA =						\
   %D%/packages/patches/fasthenry-spFactor.patch			\
   %D%/packages/patches/fcgi-2.4.0-gcc44-fixes.patch		\
   %D%/packages/patches/fcgi-2.4.0-poll.patch			\
+  %D%/packages/patches/fifo-map-fix-flags-for-gcc.patch		\
+  %D%/packages/patches/fifo-map-remove-catch.hpp.patch		\
   %D%/packages/patches/file-CVE-2017-1000249.patch		\
   %D%/packages/patches/findutils-localstatedir.patch		\
   %D%/packages/patches/findutils-test-xargs.patch		\

gnu/packages/cpp.scm

@@ -151,3 +151,47 @@ the same arithmetic operators as for single values.  It also provides
 accelerated implementation of common mathematical functions operating on
 batches.")
     (license license:bsd-3)))
+
+(define-public fifo-map
+  (let* ((commit "0dfbf5dacbb15a32c43f912a7e66a54aae39d0f9")
+         (revision "0")
+         (version (git-version "1.1.1" revision commit)))
+    (package
+      (name "fifo-map")
+      (version version)
+      (home-page "https://github.com/nlohmann/fifo_map")
+      (source (origin
+                (method git-fetch)
+                (uri (git-reference
+                      (url home-page)
+                      (commit commit)))
+                (sha256
+                 (base32
+                  "0pi77b75kp0l7z454ihcd14nzpi3nc5m4nyjbsgy5f9bw3676196"))
+                (patches (search-patches "fifo-map-remove-catch.hpp.patch"
+                                         "fifo-map-fix-flags-for-gcc.patch"))
+                (file-name (git-file-name name version))
+                (modules '((guix build utils)))
+                (snippet '(delete-file-recursively "./test/thirdparty"))))
+      (native-inputs
+       `(("catch2" ,catch-framework2)))
+      (build-system cmake-build-system)
+      (arguments
+       `(#:phases
+         (modify-phases %standard-phases
+           (replace 'check
+             (lambda _
+               (invoke "./unit")))
+           (replace 'install
+             (lambda* (#:key outputs #:allow-other-keys)
+               (let* ((out (assoc-ref outputs "out"))
+                      (inc (string-append out "/include/fifo_map")))
+                 (with-directory-excursion
+                     (string-append "../" ,name "-" ,version "-checkout")
+                   (install-file "src/fifo_map.hpp" inc)
+                   #t)))))))
+      (synopsis "FIFO-ordered associative container for C++")
+      (description "Fifo_map is a C++ header only library for associative
+container which uses the order in which keys were inserted to the container
+as ordering relation.")
+      (license license:expat))))

gnu/packages/patches/fifo-map-fix-flags-for-gcc.patch

@@ -0,0 +1,39 @@
+From 0871db30bd73d112a434f54572d34cca28de61c5 Mon Sep 17 00:00:00 2001
+From: fis <ybbs.daans@hotmail.com>
+Date: Sat, 26 May 2018 22:58:37 +0800
+Subject: [PATCH 2/2] * CMakeLists.txt: Fix flags for gcc.
+
+---
+ CMakeLists.txt | 18 ++----------------
+ 1 file changed, 2 insertions(+), 16 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index eba147b..d60dcef 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -6,20 +6,6 @@ add_executable(unit src/fifo_map.hpp test/unit.cpp)
+ 
+ target_include_directories(unit PRIVATE "test" "src")
+ 
+-if(MSVC)
+-    set(CMAKE_CXX_FLAGS
+-        "/EHsc"
+-    )
++set(CMAKE_CXX_FLAGS "-std=c++11 -fpermissive")
+ 
+-    STRING(REPLACE "/O2" "/Od" CMAKE_CXX_FLAGS_RELEASE ${CMAKE_CXX_FLAGS_RELEASE})
+-
+-    add_definitions(-D_SCL_SECURE_NO_WARNINGS)
+-else(MSVC)
+-    set(CMAKE_CXX_FLAGS
+-        "-std=c++11 -stdlib=libc++"
+-    )
+-endif(MSVC)
+-
+-include_directories(
+-    src test
+-)
++include_directories(src test)
+-- 
+2.14.3
+

gnu/packages/patches/fifo-map-remove-catch.hpp.patch

@@ -0,0 +1,30 @@
+From 20dcf90fd02511f8d78ea7cc8ac82c121fd2f6cf Mon Sep 17 00:00:00 2001
+From: fis <ybbs.daans@hotmail.com>
+Date: Sat, 26 May 2018 22:56:29 +0800
+Subject: [PATCH 1/2] * CMakeLists.txt: Remove catch.hpp.
+
+---
+ CMakeLists.txt | 6 ++----
+ 1 file changed, 2 insertions(+), 4 deletions(-)
+
+diff --git a/CMakeLists.txt b/CMakeLists.txt
+index 6603c7f..eba147b 100644
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -2,11 +2,9 @@ cmake_minimum_required(VERSION 2.8)
+ 
+ project(fifo_map LANGUAGES CXX)
+ 
+-add_executable(unit
+-    src/fifo_map.hpp test/thirdparty/catch/catch.hpp test/unit.cpp
+-)
++add_executable(unit src/fifo_map.hpp test/unit.cpp)
+ 
+-target_include_directories(unit PRIVATE "test" "src" "test/thirdparty")
++target_include_directories(unit PRIVATE "test" "src")
+ 
+ if(MSVC)
+     set(CMAKE_CXX_FLAGS
+-- 
+2.14.3
+