From 39cda6be9908275bd5daee82818a675547833c3e Mon Sep 17 00:00:00 2001
From: Jacek Galowicz <jacek@galowicz.de>
Date: Wed, 30 Mar 2022 14:52:18 +0200
Subject: [PATCH] jsoncpp: enable static and USING_SECURE_MEMORY

---
 .../development/libraries/jsoncpp/default.nix | 30 +++++++++++++++++--
 1 file changed, 27 insertions(+), 3 deletions(-)

diff --git a/pkgs/development/libraries/jsoncpp/default.nix b/pkgs/development/libraries/jsoncpp/default.nix
index 9adf509f8aa..77d49c70003 100644
--- a/pkgs/development/libraries/jsoncpp/default.nix
+++ b/pkgs/development/libraries/jsoncpp/default.nix
@@ -1,4 +1,13 @@
-{ lib, stdenv, fetchFromGitHub, cmake, python3, validatePkgConfig, fetchpatch }:
+{ lib
+, stdenv
+, fetchFromGitHub
+, cmake
+, python3
+, validatePkgConfig
+, fetchpatch
+, secureMemory ? false
+, enableStatic ? stdenv.hostPlatform.isStatic
+}:
 
 stdenv.mkDerivation rec {
   pname = "jsoncpp";
@@ -30,6 +39,10 @@ stdenv.mkDerivation rec {
     export sourceRoot=${src.name}
   '';
 
+  postPatch = lib.optionalString secureMemory ''
+    sed -i 's/#define JSONCPP_USING_SECURE_MEMORY 0/#define JSONCPP_USING_SECURE_MEMORY 1/' include/json/version.h
+  '';
+
   # Hack to be able to run the test, broken because we use
   # CMAKE_SKIP_BUILD_RPATH to avoid cmake resetting rpath on install
   preBuild = if stdenv.isDarwin then ''
@@ -42,10 +55,21 @@ stdenv.mkDerivation rec {
 
   cmakeFlags = [
     "-DBUILD_SHARED_LIBS=ON"
-    "-DBUILD_STATIC_LIBS=OFF"
     "-DBUILD_OBJECT_LIBS=OFF"
     "-DJSONCPP_WITH_CMAKE_PACKAGE=ON"
-  ] ++ lib.optional (stdenv.buildPlatform != stdenv.hostPlatform) "-DJSONCPP_WITH_TESTS=OFF";
+  ]
+    # the test's won't compile if secureMemory is used because there is no
+    # comparison operators and conversion functions between
+    # std::basic_string<..., Json::SecureAllocator<char>> vs.
+    # std::basic_string<..., [default allocator]>
+    ++ lib.optional ((stdenv.buildPlatform != stdenv.hostPlatform) || secureMemory) "-DJSONCPP_WITH_TESTS=OFF"
+    ++ lib.optional (!enableStatic) "-DBUILD_STATIC_LIBS=OFF";
+
+  # this is fixed and no longer necessary in 1.9.5 but there they use
+  # memset_s without switching to a different c++ standard in the cmake files
+  postInstall = lib.optionalString enableStatic ''
+    (cd $out/lib && ln -sf libjsoncpp_static.a libjsoncpp.a)
+  '';
 
   meta = with lib; {
     homepage = "https://github.com/open-source-parsers/jsoncpp";