diff options
| -rw-r--r-- | cmake/Platform/Emscripten.cmake | 4 | ||||
| -rw-r--r-- | tests/cmake/target_html/CMakeLists.txt | 5 | ||||
| -rw-r--r-- | tools/validate_asmjs.py | 82 |
3 files changed, 91 insertions, 0 deletions
diff --git a/cmake/Platform/Emscripten.cmake b/cmake/Platform/Emscripten.cmake index 9bfa829d..ec3f5383 100644 --- a/cmake/Platform/Emscripten.cmake +++ b/cmake/Platform/Emscripten.cmake @@ -135,3 +135,7 @@ set(CMAKE_SHARED_LINKER_FLAGS_RELWITHDEBINFO "-O2" CACHE STRING "Emscripten-over set(CMAKE_MODULE_LINKER_FLAGS_RELEASE "-O2" CACHE STRING "Emscripten-overridden CMAKE_MODULE_LINKER_FLAGS_RELEASE") set(CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL "-O2" CACHE STRING "Emscripten-overridden CMAKE_MODULE_LINKER_FLAGS_MINSIZEREL") set(CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO "-O2" CACHE STRING "Emscripten-overridden CMAKE_MODULE_LINKER_FLAGS_RELWITHDEBINFO") + +function(em_validate_asmjs_after_build target) + add_custom_command(TARGET ${target} POST_BUILD COMMAND ${CMAKE_COMMAND} -E echo Validating build output for asm.js... COMMAND "python" ARGS "${EMSCRIPTEN_ROOT_PATH}/tools/validate_asmjs.py" "$<TARGET_FILE:${target}>") +endfunction() diff --git a/tests/cmake/target_html/CMakeLists.txt b/tests/cmake/target_html/CMakeLists.txt index 8b0528eb..b5c69417 100644 --- a/tests/cmake/target_html/CMakeLists.txt +++ b/tests/cmake/target_html/CMakeLists.txt @@ -14,3 +14,8 @@ SET(CMAKE_EXECUTABLE_SUFFIX ".html") add_executable(hello_world_gles ${sourceFiles}) set_target_properties(hello_world_gles PROPERTIES LINK_FLAGS "${linkFlags}") + +# Validating asm.js requires SpiderMonkey JS VM - detect its presence via the SPIDERMONKEY environment variable. +if (DEFINED ENV{SPIDERMONKEY} AND CMAKE_BUILD_TYPE STREQUAL Release) + em_validate_asmjs_after_build(hello_world_gles) +endif() diff --git a/tools/validate_asmjs.py b/tools/validate_asmjs.py new file mode 100644 index 00000000..ea909fbd --- /dev/null +++ b/tools/validate_asmjs.py @@ -0,0 +1,82 @@ +#!/usr/bin/python + +# This is a helper script to validate a file for asm.js. + +# cmdline usage: 'python validate_asmjs.py filename.{html/js}' +# Prints a line starting with 'OK: ' on success, and returns process exit code 0. +# On failure, prints a line starting with 'FAIL: ', and returns a nonzero process exit code. + +# python usage: 'validate_asmjs("filename.{html/js}", muteOutput=True/False)' +# Returns True/False depending on whether the file was valid asm.js. + +# This script depends on the SpiderMonkey JS engine, which must be present in PATH in order for this script to function. + +import subprocess, sys, re, tempfile, os, time +import shared + +# Looks up SpiderMonkey engine using the variable SPIDERMONKEY_ENGINE in ~/.emscripten, and if not set up there, via PATH. +def find_spidermonkey_engine(): + sm_engine = shared.SPIDERMONKEY_ENGINE if hasattr(shared, 'SPIDERMONKEY_ENGINE') else [''] + if not sm_engine or len(sm_engine[0]) == 0 or not os.path.exists(sm_engine[0]): + sm_engine[0] = shared.Building.which('js') + if sm_engine[0] == None: + return ['js-not-found'] + return sm_engine + +# Given a .js file, returns True/False depending on if that file is valid asm.js +def validate_asmjs_jsfile(filename, muteOutput): + process = subprocess.Popen(find_spidermonkey_engine() + ['-c', filename], stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE) + (stdout, stderr) = process.communicate() + if not muteOutput: + if len(stdout.strip()) > 0: + print stdout.strip() + if len(stderr.strip()) > 0: + # Pretty-print the output not to contain a spurious warning. + stderr = stderr.replace('warning: successfully compiled asm.js', ' successfully compiled asm.js') + + print >> sys.stderr, stderr.strip() + if 'successfully compiled asm.js' in stderr: + return True + else: + return False + +# This tool takes as input a file built with Emscripten (either .html or .js) and validates it for asm.js. +# Returns True/False denoting whether the file was valid asm.js. In case of a .html file, all <script>content</script> tags are searched, +# and the ones containing a "use asm" section are validated. +def validate_asmjs(filename, muteOutput): + if filename.endswith('.html'): + html = open(filename, 'r').read() + matches = re.findall('''<\w*script\w*.*?>(.*?)<\w*/script\w*>''', html, re.DOTALL | re.MULTILINE) + numAsmJsBlocks = 0 + for match in matches: + if '"use asm"' in match: + numAsmJsBlocks = numAsmJsBlocks + 1 + tmp_js = tempfile.mkstemp(suffix='.js') + os.write(tmp_js[0], match) + os.close(tmp_js[0]) + valid_asmjs = validate_asmjs_jsfile(tmp_js[1], muteOutput) + os.remove(tmp_js[1]) + if not valid_asmjs: + return False + if numAsmJsBlocks == 0: + if not muteOutput: + print >> sys.stderr, 'Error: the file does not contain any "use asm" modules.' + return False + else: + return True + else: + return validate_asmjs_jsfile(filename, muteOutput) + +def main(): + if len(sys.argv) < 2: + print 'Usage: validate_asmjs <filename>' + return 2 + if validate_asmjs(sys.argv[1], muteOutput=False): + print "OK: File '" + sys.argv[1] + "' validates as asm.js" + return 0 + else: + print "FAIL: File '" + sys.argv[1] + "' is not valid asm.js" + return 1 + +if __name__ == '__main__': + sys.exit(main()) |