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import os
from SCons.Util import WhereIs
def exists(env):
return WhereIs("emcc") is not None
def generate(env):
if env["arch"] not in ("wasm32"):
print("Only wasm32 supported on web. Exiting.")
env.Exit(1)
env["CC"] = "emcc"
env["CXX"] = "em++"
env["AR"] = "emar"
env["RANLIB"] = "emranlib"
env.Append(CPPFLAGS=["-s", "SIDE_MODULE=1"])
env.Append(LINKFLAGS=["-s", "SIDE_MODULE=1"])
env["SHOBJSUFFIX"] = ".bc"
env["SHLIBSUFFIX"] = ".wasm"
# Use TempFileMunge since some AR invocations are too long for cmd.exe.
# Use POSIX-style paths, required with TempFileMunge.
env["ARCOM_POSIX"] = env["ARCOM"].replace("$TARGET", "$TARGET.posix").replace("$SOURCES", "$SOURCES.posix")
env["ARCOM"] = "${TEMPFILE(ARCOM_POSIX)}"
# Thread support (via SharedArrayBuffer).
env.Append(CCFLAGS=["-s", "USE_PTHREADS=1"])
env.Append(LINKFLAGS=["-s", "USE_PTHREADS=1"])
# All intermediate files are just LLVM bitcode.
env["OBJPREFIX"] = ""
env["OBJSUFFIX"] = ".bc"
env["PROGPREFIX"] = ""
# Program() output consists of multiple files, so specify suffixes manually at builder.
env["PROGSUFFIX"] = ""
env["LIBPREFIX"] = "lib"
env["LIBSUFFIX"] = ".a"
env["LIBPREFIXES"] = ["$LIBPREFIX"]
env["LIBSUFFIXES"] = ["$LIBSUFFIX"]
env.Replace(SHLINKFLAGS="$LINKFLAGS")
env.Replace(SHLINKFLAGS="$LINKFLAGS")
env.Append(CPPDEFINES=["WEB_ENABLED", "UNIX_ENABLED"])
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