First successful build of Xilinx XRT

What an absolute nightmare, and we are far from the end.

pkgs/aiebu.patch

@@ -0,0 +1,25 @@
+--- a/src/runtime_src/core/common/aiebu/src/cpp/aiebu/utils/asm/CMakeLists.txt
++++ b/src/runtime_src/core/common/aiebu/src/cpp/aiebu/utils/asm/CMakeLists.txt
+@@ -23,8 +23,6 @@ add_executable(aiebu-asm $<TARGET_OBJECTS:aiebu_asm_objects>)
+ target_link_libraries(aiebu-asm PRIVATE aiebu_static)
+
+ if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+-  target_link_options(aiebu-asm PRIVATE "-static")
+-  set_target_properties(aiebu-asm PROPERTIES INSTALL_RPATH "" BUILD_RPATH "")
+
+   # Create a dynamically linked executable. aiebu-asm-dyn, on Linux for running
+   # valgrind, etc. This binary is not released for deployment but only used for
+@@ -35,13 +33,6 @@ if (${CMAKE_SYSTEM_NAME} STREQUAL "Linux")
+   target_link_libraries(aiebu-asm-dyn PRIVATE aiebu_static)
+ endif()
+
+-# This custom target fails if aiebu-asm has any dynamic dependencies
+-add_custom_target(check_dynamic_deps ALL
+-  COMMAND ${CMAKE_COMMAND} -E echo "Checking for dynamic dependencies ..."
+-  COMMAND ${CMAKE_COMMAND} -P "${AIEBU_SOURCE_DIR}/cmake/depends.cmake" $<TARGET_FILE:aiebu-asm> aiebu-asm_depends.txt
+-  DEPENDS aiebu-asm
+-  )
+-
+ install(TARGETS aiebu-asm
+   RUNTIME DESTINATION ${AIEBU_INSTALL_BIN_DIR}
+   CONFIGURATIONS Debug Release COMPONENT Runtime

pkgs/overlay.nix

@@ -42,4 +42,5 @@ final: prev:
   });
 
   prometheus-slurm-exporter = prev.callPackage ./slurm-exporter.nix { };
+  xilinx-xrt = prev.callPackage ./xilinx-xrt.nix { };
 }

pkgs/xilinx-xrt-icd.patch

@@ -0,0 +1,13 @@
+diff --git a/src/CMake/icd.cmake b/src/CMake/icd.cmake
+index 255a2e3d8..460a6d4c7 100644
+--- a/src/CMake/icd.cmake
++++ b/src/CMake/icd.cmake
+@@ -10,7 +10,7 @@ configure_file (
+   ${ICD_FILE_NAME}
+   )
+ 
+-set(OCL_ICD_INSTALL_PREFIX "/etc/OpenCL/vendors")
++set(OCL_ICD_INSTALL_PREFIX "${CMAKE_INSTALL_PREFIX}/etc/OpenCL/vendors")
+ 
+ install (FILES ${CMAKE_CURRENT_BINARY_DIR}/${ICD_FILE_NAME}
+   DESTINATION ${OCL_ICD_INSTALL_PREFIX}

pkgs/xilinx-xrt.nix

@@ -0,0 +1,84 @@
+{
+  stdenv
+, fetchFromGitHub
+, enableDebug ? false
+, lib
+, cmake
+, pkg-config
+, libdrm
+, libelf
+, opencl-headers
+, ocl-icd
+, git
+, boost
+, ncurses
+, openssl
+, rapidjson
+, protobuf
+, python3
+, libuuid
+, curl
+, libsystemtap
+, libxcrypt
+, udev
+#, glibc
+}:
+
+with lib;
+
+stdenv.mkDerivation rec {
+  name = "xilinx-xrt";
+  version = "dc81a9cc";
+  src = fetchFromGitHub {
+    owner = "Xilinx";
+    repo = "XRT";
+    rev = "dc81a9cc852bf44e71aa3edde7c8f7d54f355eab";
+    hash = "sha256-SG1gIO8Bvgs5XQ7HswjWNavPH+m8xHXqauztuJa6aEo=";
+    fetchSubmodules = true;
+  };
+  dontStrip = true;
+  patches = [
+    ./aiebu.patch
+    ./xilinx-xrt-icd.patch
+  ];
+  cmakeFlags = [
+    #"--trace-expand"
+    #"--debug-find-pkg=OpenCL"
+    "-DXRT_INSTALL_PREFIX=${placeholder "out"}"
+    "-DXRT_INSTALL_DIR=${placeholder "out"}"
+    "-DXRT_NATIVE_BUILD=yes"
+    "-DCMAKE_BUILD_WITH_INSTALL_RPATH=ON"
+  ];
+  # A directory named "build" already exists
+  cmakeBuildDir = "the-build";
+
+  # Replace all occurences of /usr to $out, although some are not correct. By
+  # default they are replaced by /var/empty
+  dontFixCmake = true;
+  preConfigure = ''
+    find "." -type f \( -name "*.cmake" -o -name "*.cmake.in" -o -name CMakeLists.txt \) -print | 
+        while read fn; do
+            sed -e 's^/usr\([ /]\|$\)^'$out'\1^g' -e 's^/opt\([ /]\|$\)^'$out'\1^g' < "$fn" > "$fn.tmp"
+            mv "$fn.tmp" "$fn"
+        done
+  '';
+#  preBuild = ''
+#    set -x
+#    cat CMakeCache.txt
+#    echo --------------------------------------
+#    grep -R '/var/empty' .
+#    echo --------------------------------------
+#    set +x
+#    exit 1
+#  '';
+  buildFlags = [
+    #"VERBOSE=1"
+  ];
+  nativeBuildInputs = [ cmake pkg-config git ];
+  buildInputs = [ libdrm.dev opencl-headers ocl-icd boost.dev ncurses
+    openssl.dev rapidjson protobuf python3 libelf libuuid.dev curl.dev libsystemtap
+    libxcrypt udev.out udev.dev
+    #glibc.static
+  ];
+  hardeningDisable = [ "all" ];
+}