From be4406edeecf6e2225b6c6d96a24f89ed4b314e1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabian=20M=C3=B6ller?= <fabianm88@gmail.com>
Date: Mon, 2 Sep 2019 14:19:15 +0200
Subject: [PATCH 1/2] xmlsec: add library path to lt_dladdsearchdir

This makes it easier to use libxmlsec in other libraries like
python-xmlsec.
---
 pkgs/development/libraries/xmlsec/default.nix    | 15 +++++++++------
 .../libraries/xmlsec/lt_dladdsearchdir.patch     | 16 ++++++++++++++++
 2 files changed, 25 insertions(+), 6 deletions(-)
 create mode 100644 pkgs/development/libraries/xmlsec/lt_dladdsearchdir.patch

diff --git a/pkgs/development/libraries/xmlsec/default.nix b/pkgs/development/libraries/xmlsec/default.nix
index 25c5bf458887..86cc6638fa61 100644
--- a/pkgs/development/libraries/xmlsec/default.nix
+++ b/pkgs/development/libraries/xmlsec/default.nix
@@ -1,5 +1,5 @@
 { stdenv, fetchurl, libxml2, gnutls, libxslt, pkgconfig, libgcrypt, libtool
-, openssl, nss, makeWrapper }:
+, openssl, nss }:
 
 let
   version = "1.2.28";
@@ -13,9 +13,16 @@ stdenv.mkDerivation {
     sha256 = "1m12caglhyx08g8lh2sl3nkldlpryzdx2d572q73y3m33s0w9vhk";
   };
 
+  patches = [
+    ./lt_dladdsearchdir.patch
+  ];
+  postPatch = ''
+    substituteAllInPlace src/dl.c
+  '';
+
   outputs = [ "out" "dev" ];
 
-  nativeBuildInputs = [ makeWrapper pkgconfig ];
+  nativeBuildInputs = [ pkgconfig ];
 
   buildInputs = [ libxml2 gnutls libxslt libgcrypt libtool openssl nss ];
 
@@ -34,10 +41,6 @@ stdenv.mkDerivation {
     moveToOutput "lib/xmlsec1Conf.sh" "$dev"
   '';
 
-  postFixup = ''
-    wrapProgram "$out/bin/xmlsec1" --prefix LD_LIBRARY_PATH ":" "$out/lib"
-  '';
-
   meta = {
     homepage = http://www.aleksey.com/xmlsec;
     downloadPage = https://www.aleksey.com/xmlsec/download.html;
diff --git a/pkgs/development/libraries/xmlsec/lt_dladdsearchdir.patch b/pkgs/development/libraries/xmlsec/lt_dladdsearchdir.patch
new file mode 100644
index 000000000000..17dedb0d6c81
--- /dev/null
+++ b/pkgs/development/libraries/xmlsec/lt_dladdsearchdir.patch
@@ -0,0 +1,16 @@
+diff --git a/src/dl.c b/src/dl.c
+index b13f9d46..d761855b 100644
+--- a/src/dl.c
++++ b/src/dl.c
+@@ -346,6 +346,11 @@ xmlSecCryptoDLInit(void) {
+         xmlSecIOError("lt_dlinit", NULL, NULL);
+         return(-1);
+     }
++    ret = lt_dladdsearchdir("@out@/lib");
++    if(ret != 0) {
++      xmlSecIOError("lt_dladdsearchdir", NULL, NULL);
++      return(-1);
++    }
+ #endif /* XMLSEC_DL_LIBLTDL */
+ 
+     return(0);

From de3781374143fe28a5cbdf7e3d15b6b07a645363 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Fabian=20M=C3=B6ller?= <fabianm88@gmail.com>
Date: Wed, 15 Jul 2020 10:56:59 +0200
Subject: [PATCH 2/2] xmlsec: add simple libxmlsec1 crypto loading test

---
 pkgs/development/libraries/xmlsec/default.nix | 26 ++++++++++++++++++-
 1 file changed, 25 insertions(+), 1 deletion(-)

diff --git a/pkgs/development/libraries/xmlsec/default.nix b/pkgs/development/libraries/xmlsec/default.nix
index 86cc6638fa61..a0b5da31aab0 100644
--- a/pkgs/development/libraries/xmlsec/default.nix
+++ b/pkgs/development/libraries/xmlsec/default.nix
@@ -1,6 +1,7 @@
 { stdenv, fetchurl, libxml2, gnutls, libxslt, pkgconfig, libgcrypt, libtool
-, openssl, nss }:
+, openssl, nss, lib, runCommandCC, writeText }:
 
+lib.fix (self:
 let
   version = "1.2.28";
 in
@@ -41,6 +42,28 @@ stdenv.mkDerivation {
     moveToOutput "lib/xmlsec1Conf.sh" "$dev"
   '';
 
+  passthru.tests.libxmlsec1-crypto = runCommandCC "libxmlsec1-crypto-test"
+    {
+      nativeBuildInputs = [ pkgconfig ];
+      buildInputs = [ self libxml2 libxslt libtool ];
+    } ''
+    $CC $(pkg-config --cflags --libs xmlsec1) -o crypto-test ${writeText "crypto-test.c" ''
+      #include <xmlsec/xmlsec.h>
+      #include <xmlsec/crypto.h>
+
+      int main(int argc, char **argv) {
+        return xmlSecInit() ||
+          xmlSecCryptoDLLoadLibrary(argc > 1 ? argv[1] : 0) ||
+          xmlSecCryptoInit();
+      }
+    ''}
+
+    for crypto in "" gcrypt gnutls nss openssl; do
+      ./crypto-test $crypto
+    done
+    touch $out
+  '';
+
   meta = {
     homepage = http://www.aleksey.com/xmlsec;
     downloadPage = https://www.aleksey.com/xmlsec/download.html;
@@ -50,3 +73,4 @@ stdenv.mkDerivation {
     updateWalker = true;
   };
 }
+)