Merge remote-tracking branch 'ldc-developers/master'

.circleci/config.yml

@@ -30,7 +30,7 @@ jobs:
             add-apt-repository -y 'deb http://apt.llvm.org/unstable/ llvm-toolchain main'
             wget -O - http://apt.llvm.org/llvm-snapshot.gpg.key | apt-key add -
             apt update
-            apt install -y llvm-5.0 llvm-5.0-dev
+            apt install -y llvm-5.0 llvm-5.0-dev libclang-common-5.0-dev libfuzzer-5.0-dev
       - restore_cache:
           key: host-ldc-{{ .Environment.HOST_LDC_VERSION }}
       - run:
@@ -55,27 +55,21 @@ jobs:
             bin/ldc2 -version
             cd ..
       - run:
-          name: Build LDC
+          name: Build LDC and stdlib unittest runners
           command: |
             export HOST_LDMD=$PWD/bootstrap/bin/ldmd2
             mkdir build
             cd build
-            cmake -G Ninja -DLDC_INSTALL_LTOPLUGIN=ON -DD_COMPILER=$HOST_LDMD ..
-            ninja -j3
+            cmake -G Ninja -DLDC_INSTALL_LTOPLUGIN=ON -DLDC_INSTALL_LLVM_RUNTIME_LIBS=ON -DD_COMPILER=$HOST_LDMD ..
+            ninja -j3 all all-test-runners
             bin/ldc2 -version
             cd ..
       - run:
-          name: Compile stdlib unittests
-          command: |
-            cd build
-            ninja -j3 phobos2-ldc-unittest-debug phobos2-ldc-unittest druntime-ldc-unittest-debug druntime-ldc-unittest
-            ninja -j3 phobos2-ldc-unittest-debug-shared phobos2-ldc-unittest-shared druntime-ldc-unittest-debug-shared druntime-ldc-unittest-shared
-      - run:
-          name: Run LDC unittests
+          name: Build and run LDC D unittests
           command: cd build && ctest --output-on-failure -R ldc2-unittest
           when: always
       - run:
-          name: Run LIT tests
+          name: Run LIT testsuite
           command: cd build && ctest -V -R lit-tests
           when: always
       - run:

.travis.yml

@@ -6,22 +6,16 @@ matrix:
   include:
     - os: linux
       d: ldc
-      env: LLVM_VERSION=4.0.1
+      env: LLVM_VERSION=4.0.1 OPTS="-DLIB_SUFFIX=64"
     - os: linux
       d: ldc-beta
-      env: LLVM_VERSION=3.9.1 OPTS="-DLIB_SUFFIX=64"
-    - os: linux
-      d: ldc
-      env: LLVM_VERSION=3.8.1 OPTS="-DBUILD_SHARED_LIBS=ON"
-    - os: linux
-      d: ldc
-      env: LLVM_VERSION=3.7.1 OPTS="-DBUILD_SHARED_LIBS=OFF -DLIB_SUFFIX=64"
+      env: LLVM_VERSION=3.9.1 OPTS="-DBUILD_SHARED_LIBS=ON"
     - os: linux
       d: ldc-0.17.2
-      env: LLVM_VERSION=3.6.2
+      env: LLVM_VERSION=3.8.1 OPTS="-DBUILD_SHARED_LIBS=OFF -DLIB_SUFFIX=64"
     - os: linux
       d: dmd
-      env: LLVM_VERSION=3.5.2 OPTS="-DTEST_COVERAGE=ON"
+      env: LLVM_VERSION=3.7.1 OPTS="-DTEST_COVERAGE=ON"
     - os: osx
       d: ldc-beta
       env: LLVM_VERSION=5.0.0-3 OPTS="-DBUILD_SHARED_LIBS=OFF" LLVM_SPIRV_AVAILABLE=ON
@@ -39,8 +33,6 @@ cache:
     - llvm-3.9.1
     - llvm-3.8.1
     - llvm-3.7.1
-    - llvm-3.6.2
-    - llvm-3.5.2
 addons:
   apt:
     sources:
@@ -91,24 +83,19 @@ install:
   - eval "${DC} --version"
 
 script:
-  - cmake -G Ninja -DLLVM_CONFIG=$(which ${LLVM_CONFIG}) $OPTS .
-  - ninja -j3
+  - cmake -G Ninja -DLLVM_CONFIG=$(which ${LLVM_CONFIG}) -DLDC_INSTALL_LLVM_RUNTIME_LIBS=ON $OPTS .
+  # Build LDC and stdlib unittest runners.
+  - ninja -j3 all all-test-runners
   # Output some environment info, plus make sure we only run the test suite
   # if we could actually build the executable.
   - bin/ldc2 -version || exit 1
-  # Build Phobos & druntime unittest modules.
-  - ninja -j3 phobos2-ldc-unittest-debug phobos2-ldc-unittest druntime-ldc-unittest-debug druntime-ldc-unittest
-  -
-    if [[ ! "${OPTS}" == *-DBUILD_SHARED_LIBS* ]]; then
-      ninja -j3 phobos2-ldc-unittest-debug-shared phobos2-ldc-unittest-shared druntime-ldc-unittest-debug-shared druntime-ldc-unittest-shared;
-    fi
   # Build and run LDC D unittests.
   - ctest --output-on-failure -R "ldc2-unittest"
   # Run LIT testsuite.
   - ctest -V -R "lit-tests"
   # Run DMD testsuite.
   - DMD_TESTSUITE_MAKE_ARGS=-j3 ctest -V -R "dmd-testsuite"
-  # Link and run Phobos & druntime unittest runners.
+  # Run stdlib unittests.
   - ctest -j3 --output-on-failure -E "dmd-testsuite|lit-tests|ldc2-unittest"
 
 after_success:

CMakeLists.txt

@@ -19,7 +19,7 @@ endif()
 # Locate LLVM.
 #
 
-find_package(LLVM 3.5 REQUIRED
+find_package(LLVM 3.7 REQUIRED
     all-targets analysis asmparser asmprinter bitreader bitwriter codegen core debuginfocodeview debuginfodwarf debuginfomsf debuginfopdb globalisel instcombine ipa ipo instrumentation irreader libdriver linker lto mc mcdisassembler mcparser objcarcopts object option profiledata scalaropts selectiondag support tablegen target transformutils vectorize ${EXTRA_LLVM_MODULES})
 math(EXPR LDC_LLVM_VER ${LLVM_VERSION_MAJOR}*100+${LLVM_VERSION_MINOR})
 # Remove LLVMTableGen library from list of libraries
@@ -55,8 +55,8 @@ endfunction()
 set(LDC_VERSION "1.4.0") # May be overridden by git hash tag
 set(DMDFE_MAJOR_VERSION   2)
 set(DMDFE_MINOR_VERSION   0)
-set(DMDFE_PATCH_VERSION   73)
-set(DMDFE_FIX_LEVEL       2) # Comment out if not used
+set(DMDFE_PATCH_VERSION   74)
+set(DMDFE_FIX_LEVEL       1) # Comment out if not used
 
 set(DMD_VERSION ${DMDFE_MAJOR_VERSION}.${DMDFE_MINOR_VERSION}${DMDFE_PATCH_VERSION})
 if(DEFINED DMDFE_FIX_LEVEL)
@@ -269,15 +269,15 @@ endmacro()
 #
 # Build idgen.
 #
-build_idgen(${DDMDFE_PATH}/idgen.d ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}/idgen${CMAKE_EXECUTABLE_SUFFIX}  ${DDMD_DFLAGS} "" "")
+build_idgen(${DDMDFE_PATH}/idgen.d ${PROJECT_BINARY_DIR}/idgen${CMAKE_EXECUTABLE_SUFFIX}  ${DDMD_DFLAGS} "" "")
 # Run idgen.
 add_custom_command(
     OUTPUT
         ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}/id.d
         ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}/id.h
-    COMMAND ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}/idgen  #provide full path to avoid clash with idgen on path
-    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}
-    DEPENDS ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}/idgen${CMAKE_EXECUTABLE_SUFFIX}
+    COMMAND ${PROJECT_BINARY_DIR}/idgen  #provide full path to avoid clash with idgen on path
+    WORKING_DIRECTORY ${PROJECT_BINARY_DIR}
+    DEPENDS ${PROJECT_BINARY_DIR}/idgen${CMAKE_EXECUTABLE_SUFFIX}
 )
 set(LDC_CXX_GENERATED
     ${PROJECT_BINARY_DIR}/${DDMDFE_PATH}/id.h
@@ -405,15 +405,11 @@ source_group("Generated Files" REGULAR_EXPRESSION "(id\\.[cdh]|impcnvtab\\.c)$")
 include(HandleLTOPGOBuildOptions)
 
 #
-# Enable PGO if supported for this platform and LLVM version.
-# LLVM >= 3.7 is required for PGO.
+# Enable PGO if supported for this platform.
 #
-set(LDC_WITH_PGO False)  # must be a valid Python boolean constant (case sensitive)
-if (NOT (LDC_LLVM_VER LESS 307))
-    message(STATUS "Building LDC with PGO support")
-    append("-DLDC_WITH_PGO" LDC_CXXFLAGS)
-    set(LDC_WITH_PGO True)
-endif()
+set(LDC_WITH_PGO True)  # must be a valid Python boolean constant (case sensitive)
+message(STATUS "Building LDC with PGO support")
+append("-DLDC_WITH_PGO" LDC_CXXFLAGS)
 
 #
 # Includes, defines.
@@ -708,7 +704,7 @@ build_d_executable(
     "${LDMD_D_SOURCE_FILES}"
     "$<TARGET_LINKER_FILE:LDMD_CXX_LIB>"
     "${LDMD_D_SOURCE_FILES}"
-    "LDMD_CXX_LIB;${LDC_LIB}"
+    "LDMD_CXX_LIB"
 )
 
 #
@@ -732,6 +728,53 @@ if (NOT (LDC_LLVM_VER LESS 309) AND LDC_INSTALL_LTOPLUGIN)
         message(STATUS "Also installing LTO binary: ${LLVM_LTO_BINARY}")
         file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX})
         configure_file(${LLVM_LTO_BINARY} ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/${LDC_LTO_BINARY_NAME} COPYONLY)
+    else()
+        message(STATUS "Not found: ${LLVM_LTO_BINARY}")
+    endif()
+endif()
+
+#
+# Locate ASan and other runtime libraries, and copy them to our lib folder
+# Location is LLVM_LIBRARY_DIRS/clang/<version>/lib/<OS>/ , for example LLVM_LIBRARY_DIRS/clang/4.0.0/lib/darwin/
+#
+if(APPLE)
+    set(LDC_INSTALL_LLVM_RUNTIME_LIBS_DEFAULT ON)
+else()
+    set(LDC_INSTALL_LLVM_RUNTIME_LIBS_DEFAULT OFF)
+endif()
+set(LDC_INSTALL_LLVM_RUNTIME_LIBS ${LDC_INSTALL_LLVM_RUNTIME_LIBS_DEFAULT} CACHE BOOL "Copy/install runtime libraries (ASan, libFuzzer) from LLVM/Clang into LDC lib dir when available.")
+function(copy_compilerrt_lib llvm_lib_name ldc_lib_name fixup_dylib)
+    # The LLVM version string can contain the SVN revision number, so cut that off
+    string(SUBSTRING "${LLVM_VERSION_STRING}" 0 5 LLVM_VERSION_STRING_CROPPED)
+    set(llvm_lib_path ${LLVM_LIBRARY_DIRS}/clang/${LLVM_VERSION_STRING_CROPPED}/lib/${llvm_lib_name})
+    if(EXISTS ${llvm_lib_path})
+        message(STATUS "Copying runtime library: ${llvm_lib_path} --> ${ldc_lib_name}")
+        file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX})
+        configure_file(${llvm_lib_path} ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/${ldc_lib_name} COPYONLY)
+        if (fixup_dylib)
+            execute_process(COMMAND install_name_tool -id @rpath/${ldc_lib_name} ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/${ldc_lib_name})
+        endif()
+        install(FILES ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/${ldc_lib_name} DESTINATION ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX})
+    else()
+        message(STATUS "Not found: ${llvm_lib_path}")
+    endif()
+endfunction()
+if (LDC_INSTALL_LLVM_RUNTIME_LIBS)
+    if(APPLE)
+        copy_compilerrt_lib("darwin/libclang_rt.asan_osx_dynamic.dylib" "libldc_rt.asan_osx_dynamic.dylib" TRUE)
+    elseif(UNIX)
+        copy_compilerrt_lib("linux/libclang_rt.asan-x86_64.a" "libldc_rt.asan-x86_64.a" FALSE)
+    endif()
+
+    # Locate libFuzzer runtime library, and copy it to our lib folder
+    set(LLVM_LIBFUZZER_PATH ${LLVM_LIBRARY_DIRS}/libFuzzer.a)
+    if(EXISTS ${LLVM_LIBFUZZER_PATH})
+        message(STATUS "Copying libFuzzer library: ${LLVM_LIBFUZZER_PATH} --> libFuzzer.a")
+        file(MAKE_DIRECTORY ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX})
+        configure_file(${LLVM_LIBFUZZER_PATH} ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/libFuzzer.a COPYONLY)
+        install(FILES ${PROJECT_BINARY_DIR}/lib${LIB_SUFFIX}/libFuzzer.a DESTINATION ${CMAKE_INSTALL_PREFIX}/lib${LIB_SUFFIX})
+    else()
+        message(STATUS "Not found: ${LLVM_LIBFUZZER_PATH}")
     endif()
 endif()
 
@@ -776,6 +819,9 @@ add_subdirectory(tests)
 
 install(PROGRAMS ${LDC_EXE_FULL} DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)
 install(PROGRAMS ${LDMD_EXE_FULL} DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)
+if(NOT CMAKE_INSTALL_PREFIX STREQUAL "/usr")
+    install(PROGRAMS ${PROJECT_BINARY_DIR}/bin/build-ldc-runtime.sh DESTINATION ${CMAKE_INSTALL_PREFIX}/bin)
+endif()
 if(${BUILD_SHARED})
     # For now, only install libldc if explicitly building the shared library.
     # While it might theoretically be possible to use LDC as a static library

README.md

@@ -64,7 +64,7 @@ libraries is available on the project wiki for
 [Linux and OS X](http://wiki.dlang.org/Building_LDC_from_source) and
 [Windows](http://wiki.dlang.org/Building_and_hacking_LDC_on_Windows_using_MSVC).
 
-If you have a working C++ build environment, CMake, and a current LLVM (≥ 3.5)
+If you have a working C++ build environment, CMake, and a current LLVM (≥ 3.7)
 available, there should be no big surprises.
 Building LDC also requires a working D compiler, DMD and LDC are supported.
 (LDC 0.17 is the last version that does not need a D compiler,

appveyor.yml

@@ -90,9 +90,9 @@ install:
   # Download & extract a pre-built LLVM (CMAKE_BUILD_TYPE=Release, LLVM_ENABLE_ASSERTIONS=ON)
   - ps: |
         If ($Env:APPVEYOR_JOB_ARCH -eq 'x64') {
-            appveyor DownloadFile 'https://dl.dropboxusercontent.com/s/phhwfs01jpcx74l/LLVM-3.9.1-x64-MT.7z?dl=0' -FileName llvm-x64.7z
+            appveyor DownloadFile 'https://dl.dropboxusercontent.com/s/nxw73qdy4dqs23p/LLVM-4.0.1-x64.7z?dl=0' -FileName llvm-x64.7z
         } Else {
-            appveyor DownloadFile 'https://dl.dropboxusercontent.com/s/cx5k09yablneyv3/LLVM-3.9.1-x86-MT.7z?dl=0' -FileName llvm-x86.7z
+            appveyor DownloadFile 'https://dl.dropboxusercontent.com/s/probihgpillkpuk/LLVM-4.0.1-x86.7z?dl=0' -FileName llvm-x86.7z
         }
   - md llvm-%APPVEYOR_JOB_ARCH%
   - cd llvm-%APPVEYOR_JOB_ARCH%
@@ -120,8 +120,8 @@ build_script:
   - cd ninja-ldc
   - if "%APPVEYOR_JOB_ARCH%"=="x64" ( cmake -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=c:\projects\ldc-x64 -DLLVM_ROOT_DIR=c:/projects/llvm-x64 ..\ldc )
   - if "%APPVEYOR_JOB_ARCH%"=="x86" ( cmake -G Ninja -DCMAKE_BUILD_TYPE=RelWithDebInfo -DCMAKE_INSTALL_PREFIX=c:\projects\ldc-x86 -DLLVM_ROOT_DIR=c:/projects/llvm-x86 ..\ldc )
-  # Build LDC, druntime and phobos
-  - ninja -j2
+  # Build LDC and stdlib unittest runners
+  - ninja -j2 all all-test-runners
 
 after_build:
   # install LDC, compress & publish as artifact
@@ -179,21 +179,15 @@ after_build:
 test_script:
   - cd c:\projects\ninja-ldc
   - bin\ldc2 -version
-  # Compile, link & execute a hello-world program
-  - ps: 'echo "import std.stdio; void main() { writeln(""Hello world!""); }" > hello.d'
-  - bin\ldc2 hello.d
-  - hello.exe
-  # Compile the druntime & phobos unit tests
-  - ninja -j2 druntime-ldc-unittest-debug phobos2-ldc-unittest-debug druntime-ldc-unittest phobos2-ldc-unittest
-  # Run dmd-testsuite
+  # Build and run LDC D unittests
+  - ctest --output-on-failure -R "ldc2-unittest"
+  # Run LIT testsuite
+  - ctest -V -R "lit-tests"
+  # Run DMD testsuite
   - if "%APPVEYOR_JOB_ARCH%"=="x64" ( set OS=Win_64) else ( set OS=Win_32)
   - set DMD_TESTSUITE_MAKE_ARGS=-j2
   - ctest -V -R "dmd-testsuite"
-  # Run lit testsuite
-  - ctest -V -R "lit-tests"
-  # Build and run LDC D unittests
-  - ctest --output-on-failure -R "ldc2-unittest"
-  # Link and run Phobos & druntime unittest runners
+  # Run stdlib unittests
   - ctest -j2 --output-on-failure -E "dmd-testsuite|lit-tests|ldc2-unittest"
 
 #---------------------------------#

cmake/Modules/FindLLVM.cmake

@@ -32,8 +32,6 @@ set(llvm_config_names llvm-config-5.0 llvm-config50
                       llvm-config-3.9 llvm-config39
                       llvm-config-3.8 llvm-config38
                       llvm-config-3.7 llvm-config37
-                      llvm-config-3.6 llvm-config36
-                      llvm-config-3.5 llvm-config35
                       llvm-config)
 find_program(LLVM_CONFIG
     NAMES ${llvm_config_names}
@@ -85,13 +83,6 @@ if ((WIN32 AND NOT(MINGW OR CYGWIN)) OR NOT LLVM_CONFIG)
         if(TARGET_AMDGPU GREATER -1)
             list(APPEND LLVM_FIND_COMPONENTS AMDGPUUtils)
         endif()
-        if(${LLVM_VERSION_STRING} MATCHES "^3\\.[0-6][\\.0-9A-Za-z]*")
-            # Versions below 3.7 do not support components debuginfo[dwarf|pdb]
-            # Only debuginfo is available
-            list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfodwarf" index)
-            list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfopdb" index)
-            list(APPEND LLVM_FIND_COMPONENTS "debuginfo")
-        endif()
         if(${LLVM_VERSION_STRING} MATCHES "^3\\.[0-8][\\.0-9A-Za-z]*")
             # Versions below 3.9 do not support components debuginfocodeview, globalisel
             list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfocodeview" index)
@@ -105,10 +96,6 @@ if ((WIN32 AND NOT(MINGW OR CYGWIN)) OR NOT LLVM_CONFIG)
             # Versions below 4.0 do not support component debuginfomsf
             list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfomsf" index)
         endif()
-        if(${LLVM_VERSION_STRING} MATCHES "^3\\.[0-6][\\.0-9A-Za-z]*")
-            # Versions below 3.7 do not support component libdriver
-            list(REMOVE_ITEM LLVM_FIND_COMPONENTS "libdriver" index)
-        endif()
 
         llvm_map_components_to_libnames(tmplibs ${LLVM_FIND_COMPONENTS})
         if(MSVC)
@@ -182,13 +169,6 @@ else()
     llvm_set(ROOT_DIR prefix true)
     llvm_set(ENABLE_ASSERTIONS assertion-mode)
 
-    if(${LLVM_VERSION_STRING} MATCHES "^3\\.[0-6][\\.0-9A-Za-z]*")
-        # Versions below 3.7 do not support components debuginfo[dwarf|pdb]
-        # Only debuginfo is available
-        list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfodwarf" index)
-        list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfopdb" index)
-        list(APPEND LLVM_FIND_COMPONENTS "debuginfo")
-    endif()
     if(${LLVM_VERSION_STRING} MATCHES "^3\\.[0-8][\\.0-9A-Za-z]*")
         # Versions below 3.9 do not support components debuginfocodeview, globalisel
         list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfocodeview" index)
@@ -202,18 +182,12 @@ else()
         # Versions below 4.0 do not support component debuginfomsf
         list(REMOVE_ITEM LLVM_FIND_COMPONENTS "debuginfomsf" index)
     endif()
-    if(${LLVM_VERSION_STRING} MATCHES "^3\\.[0-6][\\.0-9A-Za-z]*")
-        # Versions below 3.7 do not support component libdriver
-        list(REMOVE_ITEM LLVM_FIND_COMPONENTS "libdriver" index)
-    endif()
 
     llvm_set(LDFLAGS ldflags)
-    if(NOT ${LLVM_VERSION_STRING} MATCHES "^3\\.[0-4][\\.0-9A-Za-z]*")
-        # In LLVM 3.5+, the system library dependencies (e.g. "-lz") are accessed
-        # using the separate "--system-libs" flag.
-        llvm_set(SYSTEM_LIBS system-libs)
-        string(REPLACE "\n" " " LLVM_LDFLAGS "${LLVM_LDFLAGS} ${LLVM_SYSTEM_LIBS}")
-    endif()
+    # In LLVM 3.5+, the system library dependencies (e.g. "-lz") are accessed
+    # using the separate "--system-libs" flag.
+    llvm_set(SYSTEM_LIBS system-libs)
+    string(REPLACE "\n" " " LLVM_LDFLAGS "${LLVM_LDFLAGS} ${LLVM_SYSTEM_LIBS}")
     llvm_set(LIBRARY_DIRS libdir true)
     llvm_set_libs(LIBRARIES libs)
     # LLVM bug: llvm-config --libs tablegen returns -lLLVM-3.8.0

ddmd/access.d

@@ -2,7 +2,7 @@
  * Compiler implementation of the
  * $(LINK2 http://www.dlang.org, D programming language).
  *
- * Copyright:   Copyright (c) 1999-2016 by Digital Mars, All Rights Reserved
+ * Copyright:   Copyright (c) 1999-2017 by Digital Mars, All Rights Reserved
  * Authors:     $(LINK2 http://www.digitalmars.com, Walter Bright)
  * License:     $(LINK2 http://www.boost.org/LICENSE_1_0.txt, Boost License 1.0)
  * Source:      $(DMDSRC _access.d)