Merge pull request #666 from thewtex/wasi-cmake

web-wasi: Add Emscripten CMake modifications

web-wasi/CMakeSystemSpecificInformation.cmake

@@ -0,0 +1,123 @@
+# XXX Emscripten:
+# This file is copied as-is from the CMake source tree. Due to how CMake
+# platform toolchain files work, we must have a copy of this file located
+# relative to Emscripten platform toolchain file, or file inclusion order
+# in cmGlobalGenerator::EnableLanguage will not find Emscripten.cmake
+# toolchain file, and as a result, it is not possible to set the default
+# compilation output suffix to .js, and as a consequence the script
+# check_function_exists() will not function properly (it will try to
+# build to wrong file suffix)
+
+# CMake - Cross Platform Makefile Generator
+# Copyright 2000-2014 Kitware, Inc.
+# Copyright 2000-2011 Insight Software Consortium
+# All rights reserved.
+
+# Redistribution and use in source and binary forms, with or without
+# modification, are permitted provided that the following conditions
+# are met:
+
+# * Redistributions of source code must retain the above copyright
+#   notice, this list of conditions and the following disclaimer.
+
+# * Redistributions in binary form must reproduce the above copyright
+#   notice, this list of conditions and the following disclaimer in the
+#   documentation and/or other materials provided with the distribution.
+
+# * Neither the names of Kitware, Inc., the Insight Software Consortium,
+#   nor the names of their contributors may be used to endorse or promote
+#   products derived from this software without specific prior written
+#   permission.
+
+# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+# HOLDER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+
+# ------------------------------------------------------------------------------
+
+# The above copyright and license notice applies to distributions of
+# CMake in source and binary form.  Some source files contain additional
+# notices of original copyright by their contributors; see each source
+# for details.  Third-party software packages supplied with CMake under
+# compatible licenses provide their own copyright notices documented in
+# corresponding subdirectories.
+
+# ------------------------------------------------------------------------------
+
+# CMake was initially developed by Kitware with the following sponsorship:
+
+#  * National Library of Medicine at the National Institutes of Health
+#    as part of the Insight Segmentation and Registration Toolkit (ITK).
+
+#  * US National Labs (Los Alamos, Livermore, Sandia) ASC Parallel
+#    Visualization Initiative.
+
+#  * National Alliance for Medical Image Computing (NAMIC) is funded by the
+#    National Institutes of Health through the NIH Roadmap for Medical Research,
+#    Grant U54 EB005149.
+
+#  * Kitware, Inc.
+
+# This file is included by cmGlobalGenerator::EnableLanguage.
+# It is included after the compiler has been determined, so
+# we know things like the compiler name and if the compiler is gnu.
+
+# before cmake 2.6 these variables were set in cmMakefile.cxx. This is still
+# done to keep scripts and custom language and compiler modules working.
+# But they are reset here and set again in the platform files for the target
+# platform, so they can be used for testing the target platform instead
+# of testing the host platform.
+set(APPLE  )
+set(UNIX   )
+set(CYGWIN )
+set(WIN32  )
+
+
+# include Generic system information
+include(CMakeGenericSystem)
+
+# 2. now include SystemName.cmake file to set the system specific information
+set(CMAKE_SYSTEM_INFO_FILE Platform/${CMAKE_SYSTEM_NAME})
+
+include(${CMAKE_SYSTEM_INFO_FILE} OPTIONAL RESULT_VARIABLE _INCLUDED_SYSTEM_INFO_FILE)
+
+if(NOT _INCLUDED_SYSTEM_INFO_FILE)
+  message("System is unknown to cmake, create:\n${CMAKE_SYSTEM_INFO_FILE}"
+          " to use this system, please send your config file to "
+          "cmake@www.cmake.org so it can be added to cmake")
+  if(EXISTS ${CMAKE_BINARY_DIR}/CMakeCache.txt)
+    configure_file(${CMAKE_BINARY_DIR}/CMakeCache.txt
+                   ${CMAKE_BINARY_DIR}/CopyOfCMakeCache.txt COPYONLY)
+    message("Your CMakeCache.txt file was copied to CopyOfCMakeCache.txt. "
+            "Please send that file to cmake@www.cmake.org.")
+   endif()
+endif()
+
+
+# optionally include a file which can do extra-generator specific things, e.g.
+# CMakeFindEclipseCDT4.cmake asks gcc for the system include dirs for the Eclipse CDT4 generator
+if(CMAKE_EXTRA_GENERATOR)
+  string(REPLACE " " "" _CMAKE_EXTRA_GENERATOR_NO_SPACES ${CMAKE_EXTRA_GENERATOR} )
+  include("CMakeFind${_CMAKE_EXTRA_GENERATOR_NO_SPACES}" OPTIONAL)
+endif()
+
+
+# for most systems a module is the same as a shared library
+# so unless the variable CMAKE_MODULE_EXISTS is set just
+# copy the values from the LIBRARY variables
+# this has to be done after the system information has been loaded
+if(NOT CMAKE_MODULE_EXISTS)
+  set(CMAKE_SHARED_MODULE_PREFIX "${CMAKE_SHARED_LIBRARY_PREFIX}")
+  set(CMAKE_SHARED_MODULE_SUFFIX "${CMAKE_SHARED_LIBRARY_SUFFIX}")
+endif()
+
+
+set(CMAKE_SYSTEM_SPECIFIC_INFORMATION_LOADED 1)

web-wasi/CheckTypeSize.c.in

@@ -0,0 +1,37 @@
+@headers@
+
+#undef KEY
+#if defined(__i386)
+# define KEY '_','_','i','3','8','6'
+#elif defined(__x86_64)
+# define KEY '_','_','x','8','6','_','6','4'
+#elif defined(__ppc__)
+# define KEY '_','_','p','p','c','_','_'
+#elif defined(__ppc64__)
+# define KEY '_','_','p','p','c','6','4','_','_'
+#endif
+
+#define SIZE (sizeof(@type@))
+char info_size[] =  {'I', 'N', 'F', 'O', ':', 's','i','z','e','[',
+  ('0' + ((SIZE / 10000)%10)),
+  ('0' + ((SIZE / 1000)%10)),
+  ('0' + ((SIZE / 100)%10)),
+  ('0' + ((SIZE / 10)%10)),
+  ('0' +  (SIZE    % 10)),
+  ']',
+#ifdef KEY
+  ' ','k','e','y','[', KEY, ']',
+#endif
+  '\0'};
+
+#ifdef __CLASSIC_C__
+int main(argc, argv) int argc; char *argv[];
+#else
+int main(int argc, char *argv[])
+#endif
+{
+  int require = 0;
+  require += info_size[argc];
+  (void)argv;
+  return SIZE;
+}

web-wasi/CheckTypeSize.cmake

@@ -0,0 +1,231 @@
+#.rst:
+# CheckTypeSize
+# -------------
+#
+# Check sizeof a type
+#
+# ::
+#
+#   CHECK_TYPE_SIZE(TYPE VARIABLE [BUILTIN_TYPES_ONLY]
+#                                 [LANGUAGE <language>])
+#
+# Check if the type exists and determine its size.  On return,
+# "HAVE_${VARIABLE}" holds the existence of the type, and "${VARIABLE}"
+# holds one of the following:
+#
+# ::
+#
+#    <size> = type has non-zero size <size>
+#    "0"    = type has arch-dependent size (see below)
+#    ""     = type does not exist
+#
+# Both ``HAVE_${VARIABLE}`` and ``${VARIABLE}`` will be created as internal
+# cache variables.
+#
+# Furthermore, the variable "${VARIABLE}_CODE" holds C preprocessor code
+# to define the macro "${VARIABLE}" to the size of the type, or leave
+# the macro undefined if the type does not exist.
+#
+# The variable "${VARIABLE}" may be "0" when CMAKE_OSX_ARCHITECTURES has
+# multiple architectures for building OS X universal binaries.  This
+# indicates that the type size varies across architectures.  In this
+# case "${VARIABLE}_CODE" contains C preprocessor tests mapping from
+# each architecture macro to the corresponding type size.  The list of
+# architecture macros is stored in "${VARIABLE}_KEYS", and the value for
+# each key is stored in "${VARIABLE}-${KEY}".
+#
+# If the BUILTIN_TYPES_ONLY option is not given, the macro checks for
+# headers <sys/types.h>, <stdint.h>, and <stddef.h>, and saves results
+# in HAVE_SYS_TYPES_H, HAVE_STDINT_H, and HAVE_STDDEF_H.  The type size
+# check automatically includes the available headers, thus supporting
+# checks of types defined in the headers.
+#
+# If LANGUAGE is set, the specified compiler will be used to perform the
+# check. Acceptable values are C and CXX
+#
+# Despite the name of the macro you may use it to check the size of more
+# complex expressions, too.  To check e.g.  for the size of a struct
+# member you can do something like this:
+#
+# ::
+#
+#   check_type_size("((struct something*)0)->member" SIZEOF_MEMBER)
+#
+#
+#
+# The following variables may be set before calling this macro to modify
+# the way the check is run:
+#
+# ::
+#
+#   CMAKE_REQUIRED_FLAGS = string of compile command line flags
+#   CMAKE_REQUIRED_DEFINITIONS = list of macros to define (-DFOO=bar)
+#   CMAKE_REQUIRED_INCLUDES = list of include directories
+#   CMAKE_REQUIRED_LIBRARIES = list of libraries to link
+#   CMAKE_REQUIRED_QUIET = execute quietly without messages
+#   CMAKE_EXTRA_INCLUDE_FILES = list of extra headers to include
+
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+include(CheckIncludeFile)
+include(CheckIncludeFileCXX)
+
+cmake_policy(PUSH)
+cmake_policy(VERSION 3.0)
+
+get_filename_component(__check_type_size_dir "${CMAKE_CURRENT_LIST_FILE}" PATH)
+
+#-----------------------------------------------------------------------------
+# Helper function.  DO NOT CALL DIRECTLY.
+function(__check_type_size_impl type var map builtin language)
+  if(NOT CMAKE_REQUIRED_QUIET)
+    message(STATUS "Check size of ${type}")
+  endif()
+
+  # Include header files.
+  set(headers)
+  if(builtin)
+    if(HAVE_SYS_TYPES_H)
+      set(headers "${headers}#include <sys/types.h>\n")
+    endif()
+    if(HAVE_STDINT_H)
+      set(headers "${headers}#include <stdint.h>\n")
+    endif()
+    if(HAVE_STDDEF_H)
+      set(headers "${headers}#include <stddef.h>\n")
+    endif()
+  endif()
+  foreach(h ${CMAKE_EXTRA_INCLUDE_FILES})
+    set(headers "${headers}#include \"${h}\"\n")
+  endforeach()
+
+  # Perform the check.
+
+  if("${language}" STREQUAL "C")
+    set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.c)
+  elseif("${language}" STREQUAL "CXX")
+    set(src ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.cpp)
+  else()
+    message(FATAL_ERROR "Unknown language:\n  ${language}\nSupported languages: C, CXX.\n")
+  endif()
+  set(bin ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${var}.bin)
+  configure_file(${__check_type_size_dir}/CheckTypeSize.c.in ${src} @ONLY)
+  try_run(${var}_run_result HAVE_${var} ${CMAKE_BINARY_DIR} ${src}
+    COMPILE_DEFINITIONS ${CMAKE_REQUIRED_DEFINITIONS}
+    LINK_LIBRARIES ${CMAKE_REQUIRED_LIBRARIES}
+    CMAKE_FLAGS
+      "-DCOMPILE_DEFINITIONS:STRING=${CMAKE_REQUIRED_FLAGS}"
+      "-DINCLUDE_DIRECTORIES:STRING=${CMAKE_REQUIRED_INCLUDES}"
+    RUN_OUTPUT_VARIABLE ${var}_run_output
+    COMPILE_OUTPUT_VARIABLE output
+    )
+
+  if(${HAVE_${var}} AND NOT "${${var}_run_result}" STREQUAL "FAILED_TO_RUN")
+    set(${var} ${${var}_run_result})
+    if(NOT CMAKE_REQUIRED_QUIET)
+      message(STATUS "Check size of ${type} - done")
+    endif()
+    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeOutput.log
+      "Determining size of ${type} passed with the following output:\n${output}\n\n")
+    set(${var} "${${var}}" CACHE INTERNAL "CHECK_TYPE_SIZE: sizeof(${type})")
+  else()
+    # The check failed to compile.
+    if(NOT CMAKE_REQUIRED_QUIET)
+      message(STATUS "Check size of ${type} - failed")
+    endif()
+    file(READ ${src} content)
+    file(APPEND ${CMAKE_BINARY_DIR}${CMAKE_FILES_DIRECTORY}/CMakeError.log
+      "Determining size of ${type} failed with the following output:\n${output}\n${src}:\n${content}\n\n")
+    set(${var} "" CACHE INTERNAL "CHECK_TYPE_SIZE: ${type} unknown")
+    file(REMOVE ${map})
+  endif()
+endfunction()
+
+#-----------------------------------------------------------------------------
+macro(CHECK_TYPE_SIZE TYPE VARIABLE)
+  # parse arguments
+  unset(doing)
+  foreach(arg ${ARGN})
+    if("x${arg}" STREQUAL "xBUILTIN_TYPES_ONLY")
+      set(_CHECK_TYPE_SIZE_${arg} 1)
+      unset(doing)
+    elseif("x${arg}" STREQUAL "xLANGUAGE") # change to MATCHES for more keys
+      set(doing "${arg}")
+      set(_CHECK_TYPE_SIZE_${doing} "")
+    elseif("x${doing}" STREQUAL "xLANGUAGE")
+      set(_CHECK_TYPE_SIZE_${doing} "${arg}")
+      unset(doing)
+    else()
+      message(FATAL_ERROR "Unknown argument:\n  ${arg}\n")
+    endif()
+  endforeach()
+  if("x${doing}" MATCHES "^x(LANGUAGE)$")
+    message(FATAL_ERROR "Missing argument:\n  ${doing} arguments requires a value\n")
+  endif()
+  if(DEFINED _CHECK_TYPE_SIZE_LANGUAGE)
+    if(NOT "x${_CHECK_TYPE_SIZE_LANGUAGE}" MATCHES "^x(C|CXX)$")
+      message(FATAL_ERROR "Unknown language:\n  ${_CHECK_TYPE_SIZE_LANGUAGE}.\nSupported languages: C, CXX.\n")
+    endif()
+    set(_language ${_CHECK_TYPE_SIZE_LANGUAGE})
+  else()
+    set(_language C)
+  endif()
+
+  # Optionally check for standard headers.
+  if(_CHECK_TYPE_SIZE_BUILTIN_TYPES_ONLY)
+    set(_builtin 0)
+  else()
+    set(_builtin 1)
+    if("${_language}" STREQUAL "C")
+      check_include_file(sys/types.h HAVE_SYS_TYPES_H)
+      check_include_file(stdint.h HAVE_STDINT_H)
+      check_include_file(stddef.h HAVE_STDDEF_H)
+    elseif("${_language}" STREQUAL "CXX")
+      check_include_file_cxx(sys/types.h HAVE_SYS_TYPES_H)
+      check_include_file_cxx(stdint.h HAVE_STDINT_H)
+      check_include_file_cxx(stddef.h HAVE_STDDEF_H)
+    endif()
+  endif()
+  unset(_CHECK_TYPE_SIZE_BUILTIN_TYPES_ONLY)
+  unset(_CHECK_TYPE_SIZE_LANGUAGE)
+
+  # Compute or load the size or size map.
+  set(${VARIABLE}_KEYS)
+  set(_map_file ${CMAKE_BINARY_DIR}/${CMAKE_FILES_DIRECTORY}/CheckTypeSize/${VARIABLE}.cmake)
+  if(NOT DEFINED HAVE_${VARIABLE})
+    __check_type_size_impl(${TYPE} ${VARIABLE} ${_map_file} ${_builtin} ${_language})
+  endif()
+  include(${_map_file} OPTIONAL)
+  set(_map_file)
+  set(_builtin)
+
+  # Create preprocessor code.
+  if(${VARIABLE}_KEYS)
+    set(${VARIABLE}_CODE)
+    set(_if if)
+    foreach(key ${${VARIABLE}_KEYS})
+      set(${VARIABLE}_CODE "${${VARIABLE}_CODE}#${_if} defined(${key})\n# define ${VARIABLE} ${${VARIABLE}-${key}}\n")
+      set(_if elif)
+    endforeach()
+    set(${VARIABLE}_CODE "${${VARIABLE}_CODE}#else\n# error ${VARIABLE} unknown\n#endif")
+    set(_if)
+  elseif(${VARIABLE})
+    set(${VARIABLE}_CODE "#define ${VARIABLE} ${${VARIABLE}}")
+  else()
+    set(${VARIABLE}_CODE "/* #undef ${VARIABLE} */")
+  endif()
+endmacro()
+
+#-----------------------------------------------------------------------------
+cmake_policy(POP)

web-wasi/Dockerfile.in

@@ -25,6 +25,10 @@ ENV AR=${CROSS_ROOT}/bin/llvm-ar \
 
 COPY WASI.cmake /usr/src/
 RUN mv /usr/src/WASI.cmake /usr/share/cmake-*/Modules/Platform/
+COPY *.cmake /usr/src/
+RUN mv /usr/src/*.cmake /usr/share/cmake-*/Modules/
+COPY CheckTypeSize.c.in /usr/src/
+RUN mv /usr/src/CheckTypeSize.c.in /usr/share/cmake-*/Modules/
 COPY Toolchain.cmake ${CROSS_ROOT}/
 ENV CMAKE_TOOLCHAIN_FILE ${CROSS_ROOT}/Toolchain.cmake
 

web-wasi/FindOpenAL.cmake

@@ -0,0 +1,25 @@
+# Locate OpenAL
+# This module defines
+# OPENAL_LIBRARY
+# OPENAL_FOUND, if false, do not try to link to OpenAL
+# OPENAL_INCLUDE_DIR, where to find the headers
+
+# The implementation is based on the standard FindOpenAL.cmake provided with CMake,
+# but customized for targeting Emscripten only.
+
+if (NOT OPENAL_FOUND)
+	SET(OPENAL_FOUND TRUE)
+
+	# For Emscripten-compiled apps in the test suite (test_alut), this is expected...
+	SET(OPENAL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include")
+	# ... but the stock FindOpenAL.cmake would have returned this.
+	#SET(OPENAL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include/AL")
+
+	# Returning "-lopenal" is now considered mandatory
+	SET(OPENAL_LIBRARY "-lopenal")
+	SET(OPENAL_LIB "-lopenal")
+
+	set(CMAKE_INCLUDE_PATH ${CMAKE_INCLUDE_PATH} "${EMSCRIPTEN_ROOT_PATH}/system/include" "${EMSCRIPTEN_ROOT_PATH}/system/include/AL")
+
+	MARK_AS_ADVANCED(OPENAL_LIBRARY OPENAL_INCLUDE_DIR)
+endif()

web-wasi/FindOpenGL.cmake

@@ -0,0 +1,34 @@
+# Locate OpenGL
+# This module defines:
+# OPENGL_FOUND       - system has OpenGL
+# OPENGL_XMESA_FOUND - system has XMESA
+# OPENGL_GLU_FOUND   - system has GLU
+# OPENGL_INCLUDE_DIR - the GL include directory
+# OPENGL_LIBRARIES   - Link these to use OpenGL and GLU
+# OPENGL_gl_LIBRARY  - Path to OpenGL Library
+# OPENGL_glu_LIBRARY - Path to GLU Library
+
+# The implementation is based on the standard FindOpenGL.cmake provided with CMake,
+# but customized for targeting Emscripten only.
+
+# These libraries are provided with Emscripten
+SET(OPENGL_FOUND TRUE)
+SET(OPENGL_GLU_FOUND TRUE)
+
+# Doesn't look like this one is part of Emscripten
+SET(OPENGL_XMESA_FOUND FALSE)
+
+# This is the path where <GL/gl.h> is found
+SET(OPENGL_INCLUDE_DIR "${EMSCRIPTEN_ROOT_PATH}/system/include")
+
+# No library to link against for OpenGL, since Emscripten picks it up automatically from library_webgl.js,
+# but need to report something, or CMake thinks we failed in the search.
+SET(OPENGL_LIBRARIES "nul")
+SET(OPENGL_gl_LIBRARY "nul")
+SET(OPENGL_glu_LIBRARY "nul")
+
+mark_as_advanced(
+  OPENGL_INCLUDE_DIR
+  OPENGL_glu_LIBRARY
+  OPENGL_gl_LIBRARY
+)

web-wasi/TestBigEndian.cmake

@@ -0,0 +1,30 @@
+#.rst:
+# TestBigEndian
+# -------------
+#
+# The TestBigEndian.cmake module that ships with CMake, which
+# checks if the system is big endian or little endian, assumes
+# that a binary is produced that will have bytes that correspond to the
+# endianness on the target system. Since emscripten produces Javascript, we
+# override the default behavior and always return little endian.
+#
+# ::
+#
+#   TEST_BIG_ENDIAN(VARIABLE)
+#   VARIABLE - variable to store the result to
+#=============================================================================
+# Copyright 2002-2009 Kitware, Inc.
+#
+# Distributed under the OSI-approved BSD License (the "License");
+# see accompanying file Copyright.txt for details.
+#
+# This software is distributed WITHOUT ANY WARRANTY; without even the
+# implied warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
+# See the License for more information.
+#=============================================================================
+# (To distribute this file outside of CMake, substitute the full
+#  License text for the above reference.)
+
+function(TEST_BIG_ENDIAN VARIABLE)
+  set(${VARIABLE} 0 CACHE INTERNAL "Result of TEST_BIG_ENDIAN" FORCE)
+endfunction()