uboot: (firmwareOdroidC2/C4) don't invoke patch tool, use patches = [] instead

https://github.com/NixOS/nixpkgs/blob/master/pkgs/stdenv/generic/setup.sh#L948
this can do it nicely.

Signed-off-by: Anton Arapov <anton@deadbeef.mx>

pkgs/development/libraries/eigen/2.0.nix

@@ -0,0 +1,23 @@
+{ lib, stdenv, fetchFromGitLab, cmake }:
+
+stdenv.mkDerivation rec {
+  pname = "eigen";
+  version = "2.0.17";
+
+  src = fetchFromGitLab {
+    owner = "libeigen";
+    repo = pname;
+    rev = version;
+    hash = "sha256-C1Bu2H4zxd/2QVzz9AOdoCSRwOYjF41Vr/0S8Fm2kzQ=";
+  };
+
+  nativeBuildInputs = [ cmake ];
+
+  meta = with lib; {
+    homepage = "https://eigen.tuxfamily.org";
+    description = "C++ template library for linear algebra: vectors, matrices, and related algorithms";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ sander raskin ];
+    platforms = platforms.unix;
+  };
+}

pkgs/development/libraries/eigen/default.nix

@@ -0,0 +1,31 @@
+{ lib
+, stdenv
+, fetchFromGitLab
+, cmake
+}:
+
+stdenv.mkDerivation rec {
+  pname = "eigen";
+  version = "3.4.0";
+
+  src = fetchFromGitLab {
+    owner = "libeigen";
+    repo = pname;
+    rev = version;
+    sha256 = "sha256-1/4xMetKMDOgZgzz3WMxfHUEpmdAm52RqZvz6i0mLEw=";
+  };
+
+  patches = [
+    ./include-dir.patch
+  ];
+
+  nativeBuildInputs = [ cmake ];
+
+  meta = with lib; {
+    homepage = "https://eigen.tuxfamily.org";
+    description = "C++ template library for linear algebra: vectors, matrices, and related algorithms";
+    license = licenses.lgpl3Plus;
+    maintainers = with maintainers; [ sander raskin ];
+    platforms = platforms.unix;
+  };
+}

pkgs/development/libraries/eigen/include-dir.patch

@@ -0,0 +1,57 @@
+--- a/CMakeLists.txt
++++ b/CMakeLists.txt
+@@ -1,5 +1,5 @@
+ # cmake_minimum_require must be the first command of the file
+-cmake_minimum_required(VERSION 3.5.0)
++cmake_minimum_required(VERSION 3.7.0)
+ 
+ project(Eigen3)
+ 
+@@ -443,7 +443,7 @@ set(PKGCONFIG_INSTALL_DIR
+     CACHE PATH "The directory relative to CMAKE_INSTALL_PREFIX where eigen3.pc is installed"
+     )
+ 
+-foreach(var INCLUDE_INSTALL_DIR CMAKEPACKAGE_INSTALL_DIR PKGCONFIG_INSTALL_DIR)
++foreach(var CMAKEPACKAGE_INSTALL_DIR PKGCONFIG_INSTALL_DIR)
+   # If an absolute path is specified, make it relative to "{CMAKE_INSTALL_PREFIX}".
+   if(IS_ABSOLUTE "${${var}}")
+     file(RELATIVE_PATH "${var}" "${CMAKE_INSTALL_PREFIX}" "${${var}}")
+@@ -466,13 +466,6 @@ install(FILES
+   DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel
+   )
+ 
+-if(EIGEN_BUILD_PKGCONFIG)
+-    configure_file(eigen3.pc.in eigen3.pc @ONLY)
+-    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eigen3.pc
+-        DESTINATION ${PKGCONFIG_INSTALL_DIR}
+-        )
+-endif()
+-
+ install(DIRECTORY Eigen DESTINATION ${INCLUDE_INSTALL_DIR} COMPONENT Devel)
+ 
+ 
+@@ -593,8 +586,15 @@ set ( EIGEN_VERSION_MAJOR  ${EIGEN_WORLD_VERSION} )
+ set ( EIGEN_VERSION_MINOR  ${EIGEN_MAJOR_VERSION} )
+ set ( EIGEN_VERSION_PATCH  ${EIGEN_MINOR_VERSION} )
+ set ( EIGEN_DEFINITIONS "")
+-set ( EIGEN_INCLUDE_DIR "${CMAKE_INSTALL_PREFIX}/${INCLUDE_INSTALL_DIR}" )
+ set ( EIGEN_ROOT_DIR ${CMAKE_INSTALL_PREFIX} )
++GNUInstallDirs_get_absolute_install_dir(EIGEN_INCLUDE_DIR INCLUDE_INSTALL_DIR)
++
++if(EIGEN_BUILD_PKGCONFIG)
++    configure_file(eigen3.pc.in eigen3.pc @ONLY)
++    install(FILES ${CMAKE_CURRENT_BINARY_DIR}/eigen3.pc
++        DESTINATION ${PKGCONFIG_INSTALL_DIR}
++        )
++endif()
+ 
+ include (CMakePackageConfigHelpers)
+ 
+--- a/eigen3.pc.in
++++ b/eigen3.pc.in
+@@ -6,4 +6,4 @@ Description: A C++ template library for linear algebra: vectors, matrices, and r
+ Requires:
+ Version: @EIGEN_VERSION_NUMBER@
+ Libs:
+-Cflags: -I${prefix}/@INCLUDE_INSTALL_DIR@
++Cflags: -I@EIGEN_INCLUDE_DIR@