48 def symlink(target, source, env):  argument
55 def install(env, source, subdir):  argument
59 def install_program(env, source):  argument
62 def install_shared_library(env, sources, version = ()):  argument
86 def msvc2013_compat(env):  argument
94 def unit_test(env, test_name, program_target, args=None):  argument
128 def check_cc(env, cc, expr, cpp_opt = '-E'):  argument
151 def check_header(env, header):  argument
163 def check_functions(env, functions):  argument
176 def check_prog(env, prog):  argument
187 def generate(env):  argument
740 def exists(env):  argument