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authorwm4 <wm4@nowhere>2019-06-21 02:13:48 +0200
committerwm4 <wm4@nowhere>2020-06-10 11:25:10 +0200
commit6551ea5bd3e9781e3740e99a00c56a49917d5fc9 (patch)
tree9ac8722755d86ed6e744955441582ef5185842af /TOOLS/configure_common.py
parentf3864638404284b7d3a54d22412ab9e81d0a6787 (diff)
downloadmpv-bliss.tar.bz2
mpv-bliss.tar.xz
new build systembliss
Further changes by the following people: James Ross-Gowan <rossy@jrg.systems>: win32 fixes
Diffstat (limited to 'TOOLS/configure_common.py')
-rw-r--r--TOOLS/configure_common.py740
1 files changed, 740 insertions, 0 deletions
diff --git a/TOOLS/configure_common.py b/TOOLS/configure_common.py
new file mode 100644
index 0000000000..ea2f32ea1a
--- /dev/null
+++ b/TOOLS/configure_common.py
@@ -0,0 +1,740 @@
+import atexit
+import os
+import shutil
+import subprocess
+import sys
+import tempfile
+
+# ...the fuck?
+NoneType = type(None)
+function = type(lambda: 0)
+
+programs_info = [
+ # env. name default
+ ("CC", "cc"),
+ ("PKG_CONFIG", "pkg-config"),
+ ("WINDRES", "windres"),
+ ("WAYSCAN", "wayland-scanner"),
+]
+
+install_paths_info = [
+ # env/opt default
+ ("PREFIX", "/usr/local"),
+ ("BINDIR", "$(PREFIX)/bin"),
+ ("LIBDIR", "$(PREFIX)/lib"),
+ ("CONFDIR", "$(PREFIX)/etc/$(PROJNAME)"),
+ ("INCDIR", "$(PREFIX)/include"),
+ ("DATADIR", "$(PREFIX)/share"),
+ ("MANDIR", "$(DATADIR)/man"),
+ ("DOCDIR", "$(DATADIR)/doc/$(PROJNAME)"),
+ ("HTMLDIR", "$(DOCDIR)"),
+ ("ZSHDIR", "$(DATADIR)/zsh"),
+ ("CONFLOADDIR", "$(CONFDIR)"),
+]
+
+# for help output only; code grabs them manually
+other_env_vars = [
+ # env # help text
+ ("CFLAGS", "User C compiler flags to append."),
+ ("CPPFLAGS", "Also treated as C compiler flags."),
+ ("LDFLAGS", "C compiler flags for link command."),
+ ("TARGET", "Prefix for default build tools (for cross compilation)"),
+ ("CROSS_COMPILE", "Same as TARGET."),
+]
+
+class _G:
+ help_mode = False # set if --help is specified on the command line
+
+ log_file = None # opened log file
+
+ temp_path = None # set to a private, writable temporary directory
+ build_dir = None
+ root_dir = None
+ out_of_tree = False
+
+ install_paths = {} # var name to path, see install_paths_info
+
+ programs = {} # key is symbolic name, like CC, value is string of
+ # executable name - only set if check_program was called
+
+ exe_format = "elf"
+
+ cflags = []
+ ldflags = []
+
+ config_h = "" # new contents of config.h (written at the end)
+ config_mak = "" # new contents of config.mak (written at the end)
+
+ sources = []
+
+ state_stack = []
+
+ feature_opts = {} # keyed by option name, values are:
+ # "yes": force enable, like --enable-<feature>
+ # "no": force disable, like: --disable-<feature>
+ # "auto": force auto detection, like --with-<feature>=auto
+ # "default": default (same as option not given)
+
+ dep_enabled = {} # keyed by dependency identifier; value is a bool
+ # missing key means the check was not run yet
+
+
+# Convert a string to a C string literal. Adds the required "".
+def _c_quote_string(s):
+ s = s.replace("\\", "\\\\")
+ s = s.replace("\"", "\\\"")
+ return "\"%s\"" % s
+
+# Convert a string to a make variable. Escaping is annoying: sometimes, you add
+# e..g arbitrary paths (=> everything escaped), but sometimes you want to keep
+# make variable use like $(...) unescaped.
+def _c_quote_makefile_var(s):
+ s = s.replace("\\", "\\\\")
+ s = s.replace("\"", "\\\"")
+ s = s.replace(" ", "\ ") # probably
+ return s
+
+def die(msg):
+ sys.stderr.write("Fatal error: %s\n" % msg)
+ sys.stderr.write("Not updating build files.\n")
+ if _G.log_file:
+ _G.log_file.write("--- Stopping due to error: %s\n" % msg)
+ sys.exit(1)
+
+# To be called before any user checks are performed.
+def begin():
+ _G.root_dir = "."
+ _G.build_dir = "build"
+
+ for var, val in install_paths_info:
+ _G.install_paths[var] = val
+
+ for arg in sys.argv[1:]:
+ if arg.startswith("-"):
+ name = arg[1:]
+ if name.startswith("-"):
+ name = name[1:]
+ opt = name.split("=", 1)
+ name = opt[0]
+ val = opt[1] if len(opt) > 1 else ""
+ def noval():
+ if val:
+ die("Option --%s does not take a value." % name)
+ if name == "help":
+ noval()
+ _G.help_mode = True
+ continue
+ elif name.startswith("enable-"):
+ noval()
+ _G.feature_opts[name[7:]] = "yes"
+ continue
+ elif name.startswith("disable-"):
+ noval()
+ _G.feature_opts[name[8:]] = "no"
+ continue
+ elif name.startswith("with-"):
+ if val not in ["yes", "no", "auto", "default"]:
+ die("Option --%s requires 'yes', 'no', 'auto', or 'default'."
+ % name)
+ _G.feature_opts[name[5:]] = val
+ continue
+ uname = name.upper()
+ setval = None
+ if uname in _G.install_paths:
+ def set_install_path(name, val):
+ _G.install_paths[name] = val
+ setval = set_install_path
+ elif uname == "BUILDDIR":
+ def set_build_path(name, val):
+ _G.build_dir = val
+ setval = set_build_path
+ if not setval:
+ die("Unknown option: %s" % arg)
+ if not val:
+ die("Option --%s requires a value." % name)
+ setval(uname, val)
+ continue
+
+ if _G.help_mode:
+ print("Environment variables controlling choice of build tools:")
+ for name, default in programs_info:
+ print(" %-30s %s" % (name, default))
+
+ print("")
+ print("Environment variables/options controlling install paths:")
+ for name, default in install_paths_info:
+ print(" %-30s '%s' (also --%s)" % (name, default, name.lower()))
+
+ print("")
+ print("Other environment variables:")
+ for name, help in other_env_vars:
+ print(" %-30s %s" % (name, help))
+ print("In addition, pkg-config queries PKG_CONFIG_PATH.")
+ print("")
+ print("General build options:")
+ print(" %-30s %s" % ("--builddir=PATH", "Build directory (default: build)"))
+ print(" %-30s %s" % ("", "(Requires using 'make BUILDDIR=PATH')"))
+ print("")
+ print("Specific build configuration:")
+ # check() invocations will print the options they understand.
+ return
+
+ _G.temp_path = tempfile.mkdtemp(prefix = "mpv-configure-")
+ def _cleanup():
+ shutil.rmtree(_G.temp_path)
+ atexit.register(_cleanup)
+
+ # (os.path.samefile() is "UNIX only")
+ if os.path.realpath(sys.path[0]) != os.path.realpath(os.getcwd()):
+ print("This looks like an out of tree build.")
+ print("This doesn't actually work.")
+ # Keep the build dir; this makes it less likely to accidentally trash
+ # an existing dir, especially if dist-clean (wipes build dir) is used.
+ # Also, this will work even if the same-directory check above was wrong.
+ _G.build_dir = os.path.join(os.getcwd(), _G.build_dir)
+ _G.root_dir = sys.path[0]
+ _G.out_of_tree = True
+
+ os.makedirs(_G.build_dir, exist_ok = True)
+ _G.log_file = open(os.path.join(_G.build_dir, "config.log"), "w")
+
+ _G.config_h += "// Generated by configure.\n" + \
+ "#pragma once\n\n"
+
+
+# Check whether the first argument is the same type of any in the following
+# arguments. This _always_ returns val, but throws an exception if type checking
+# fails.
+# This is not very pythonic, but I'm trying to prevent bugs, so bugger off.
+def typecheck(val, *types):
+ vt = type(val)
+ for t in types:
+ if vt == t:
+ return val
+ raise Exception("Value '%s' of type %s not any of %s" % (val, type(val), types))
+
+# If val is None, return []
+# If val is a list, return val.
+# Otherwise, return [val]
+def normalize_list_arg(val):
+ if val is None:
+ return []
+ if type(val) == list:
+ return val
+ return [val]
+
+def push_build_flags():
+ _G.state_stack.append(
+ (_G.cflags[:], _G.ldflags[:], _G.config_h, _G.config_mak,
+ _G.programs.copy()))
+
+def pop_build_flags_discard():
+ top = _G.state_stack[-1]
+ _G.state_stack = _G.state_stack[:-1]
+
+ (_G.cflags[:], _G.ldflags[:], _G.config_h, _G.config_mak,
+ _G.programs) = top
+
+def pop_build_flags_merge():
+ top = _G.state_stack[-1]
+ _G.state_stack = _G.state_stack[:-1]
+
+# Return build dir.
+def get_build_dir():
+ assert _G.build_dir is not None # too early?
+ return _G.build_dir
+
+# Root directory, i.e. top level source directory, or where configure/Makefile
+# are located.
+def get_root_dir():
+ assert _G.root_dir is not None # too early?
+ return _G.root_dir
+
+# Set which type of executable format the target uses.
+# Used for conventions which refuse to abstract properly.
+def set_exe_format(fmt):
+ assert fmt in ["elf", "pe", "macho"]
+ _G.exe_format = fmt
+
+# A check is a check, dependency, or anything else that adds source files,
+# preprocessor symbols, libraries, include paths, or simply serves as
+# dependency check for other checks.
+# Always call this function with named arguments.
+# Arguments:
+# name: String or None. Symbolic name of the check. The name can be used as
+# dependency identifier by other checks. This is the first argument, and
+# usually passed directly, instead of as named argument.
+# If this starts with a "-" flag, options with names derived from this
+# are generated:
+# --enable-$option
+# --disable-$option
+# --with-$option=<yes|no|auto|default>
+# Where "$option" is the name without flag characters, and occurrences
+# of "_" are replaced with "-".
+# If this ends with a "*" flag, the result of this check is emitted as
+# preprocessor symbol to config.h. It will have the name "HAVE_$DEF",
+# and will be either set to 0 (check failed) or 1 (check succeeded),
+# and $DEF is the name without flag characters and all uppercase.
+# desc: String or None. If specified, "Checking for <desc>..." is printed
+# while running configure. If not specified, desc is auto-generated from
+# the name.
+# default: Boolean or None. If True or None, the check is soft-enabled (that
+# means it can still be disabled by options, dependency checks, or
+# the check function). If False, the check is disabled by default,
+# but can be enabled by an option.
+# deps, deps_any, deps_neg: String, array of strings, or None. If a check is
+# enabled by default/command line options, these checks are performed in
+# the following order: deps_neg, deps_any, deps
+# deps requires all dependencies in the list to be enabled.
+# deps_any requires 1 or more dependencies to be enabled.
+# deps_neg requires that all dependencies are disabled.
+# fn: Function or None. The function is run after dependency checks. If it
+# returns True, the check is enabled, if it's False, it will be disabled.
+# Typically, your function for example check for the existence of
+# libraries, and add them to the final list of CFLAGS/LDFLAGS.
+# None behaves like "lambda: True".
+# Note that this needs to be a function. If not, it'd be run before the
+# check() function is even called. That would mean the function runs even
+# if the check was disabled, and could add unneeded things to CFLAGS.
+# If this function returns False, all added build flags are removed again,
+# which makes it easy to compose checks.
+# You're not supposed to call check() itself from fn.
+# sources: String, Array of Strings, or None.
+# If the check is enabled, add these sources to the build.
+# Duplicate sources are removed at end of configuration.
+# required: String or None. If this is a string, the check is required, and
+# if it's not enabled, the string is printed as error message.
+def check(name = None, option = None, desc = None, deps = None, deps_any = None,
+ deps_neg = None, sources = None, fn = None, required = None,
+ default = None):
+
+ deps = normalize_list_arg(deps)
+ deps_any = normalize_list_arg(deps_any)
+ deps_neg = normalize_list_arg(deps_neg)
+ sources = normalize_list_arg(sources)
+
+ typecheck(name, str, NoneType)
+ typecheck(option, str, NoneType)
+ typecheck(desc, str, NoneType)
+ typecheck(deps, NoneType, list)
+ typecheck(deps_any, NoneType, list)
+ typecheck(deps_neg, NoneType, list)
+ typecheck(sources, NoneType, list)
+ typecheck(fn, NoneType, function)
+ typecheck(required, str, NoneType)
+ typecheck(default, bool, NoneType)
+
+ option_name = None
+ define_name = None
+ if name is not None:
+ opt_flag = name.startswith("-")
+ if opt_flag:
+ name = name[1:]
+ def_flag = name.endswith("*")
+ if def_flag:
+ name = name[:-1]
+ if opt_flag:
+ option_name = name.replace("_", "-")
+ if def_flag:
+ define_name = "HAVE_" + name.replace("-", "_").upper()
+
+ if desc is None and name is not None:
+ desc = name
+
+ if _G.help_mode:
+ if not option_name:
+ return
+
+ defaction = "enable"
+ if required is not None:
+ # If they are required, but also have option set, these are just
+ # "strongly required" options.
+ defaction = "enable"
+ elif default == False:
+ defaction = "disable"
+ elif deps or deps_any or deps_neg or fn:
+ defaction = "autodetect"
+ act = "enable" if defaction == "disable" else "disable"
+ opt = "--%s-%s" % (act, option_name)
+ print(" %-30s %s %s [%s]" % (opt, act, desc, defaction))
+ return
+
+ _G.log_file.write("\n--- Test: %s\n" % (name if name else "(unnnamed)"))
+
+ if desc:
+ sys.stdout.write("Checking for %s... " % desc)
+ outcome = "yes"
+
+ force_opt = required is not None
+ use_dep = True if default is None else default
+
+ # Option handling.
+ if option_name:
+ # (The option gets removed, so we can determine whether all options were
+ # applied in the end.)
+ val = _G.feature_opts.pop(option_name, "default")
+ if val == "yes":
+ use_dep = True
+ force_opt = True
+ elif val == "no":
+ use_dep = False
+ force_opt = False
+ elif val == "auto":
+ use_dep = True
+ elif val == "default":
+ pass
+ else:
+ assert False
+
+ if not use_dep:
+ outcome = "disabled"
+
+ # Dependency resolution.
+ # But first, check whether all dependency identifiers really exist.
+ for d in deps_neg + deps_any + deps:
+ dep_enabled(d) # discard result
+ if use_dep:
+ for d in deps_neg:
+ if dep_enabled(d):
+ use_dep = False
+ outcome = "conflicts with %s" % d
+ break
+ if use_dep:
+ any_found = False
+ for d in deps_any:
+ if dep_enabled(d):
+ any_found = True
+ break
+ if len(deps_any) > 0 and not any_found:
+ use_dep = False
+ outcome = "not any of %s found" % (", ".join(deps_any))
+ if use_dep:
+ for d in deps:
+ if not dep_enabled(d):
+ use_dep = False
+ outcome = "%s not found" % d
+ break
+
+ # Running actual checks.
+ if use_dep and fn:
+ push_build_flags()
+ if fn():
+ pop_build_flags_merge()
+ else:
+ pop_build_flags_discard()
+ use_dep = False
+ outcome = "no"
+
+ # Outcome reporting and terminating if dependency not found.
+ if name:
+ _G.dep_enabled[name] = use_dep
+ if define_name:
+ add_config_h_define(define_name, 1 if use_dep else 0)
+ if use_dep:
+ _G.sources += sources
+ if desc:
+ sys.stdout.write("%s\n" % outcome)
+ _G.log_file.write("--- Outcome: %s (%s=%d)\n" %
+ (outcome, name if name else "(unnnamed)", use_dep))
+
+ if required is not None and not use_dep:
+ print("Warning: %s" % required)
+
+ if force_opt and not use_dep:
+ die("This feature is required.")
+
+
+# Runs the process like with execv() (just that args[0] is used for both command
+# and first arg. passed to the process).
+# Returns the process stdout output on success, or None on non-0 exit status.
+# In particular, this logs the command and its output/exit status to the log
+# file.
+def _run_process(args):
+ p = subprocess.Popen(args, stdout = subprocess.PIPE,
+ stderr = subprocess.PIPE,
+ stdin = -1)
+ (p_out, p_err) = p.communicate()
+ # We don't really want this. But Python 3 in particular makes it too much of
+ # a PITA (think power drill in anus) to consistently use byte strings, so
+ # we need to use "unicode" strings. Yes, a bad program could just blow up
+ # our butt here by outputting invalid UTF-8.
+ # Weakly support Python 2 too (gcc outputs UTF-8, which crashes Python 2).
+ if type(b"") != str:
+ p_out = p_out.decode("utf-8")
+ p_err = p_err.decode("utf-8")
+ status = p.wait()
+ _G.log_file.write("--- Command: %s\n" % " ".join(args))
+ if p_out:
+ _G.log_file.write("--- stdout:\n%s" % p_out)
+ if p_err:
+ _G.log_file.write("--- stderr:\n%s" % p_err)
+ _G.log_file.write("--- Exit status: %s\n" % status)
+ return p_out if status == 0 else None
+
+# Run the C compiler, possibly including linking. Return whether the compiler
+# exited with success status (0 exit code) as boolean. What exactly it does
+# depends on the arguments. Generally, it constructs a source file and tries
+# to compile it. With no arguments, it compiles, but doesn't link, a source
+# file that contains a dummy main function.
+# Note: these tests are cumulative.
+# Arguments:
+# include: String, array of strings, or None. For each string
+# "#include <$value>" is added to the top of the source file.
+# decl: String, array of strings, or None. Added to the top of the source
+# file, global scope, separated by newlines.
+# expr: String or None. Added to the body of the main function. Despite the
+# name, needs to be a full statement, needs to end with ";".
+# defined: String or None. Adds code that fails if "#ifdef $value" fails.
+# flags: String, array of strings, or None. Each string is added to the
+# compiler command line.
+# Also, if the test succeeds, all arguments are added to the CFLAGS
+# (if language==c) written to config.mak.
+# link: String, array of strings, or None. Each string is added to the
+# compiler command line, and the compiler is made to link (not passing
+# "-c").
+# A value of [] triggers linking without further libraries.
+# A value of None disables the linking step.
+# Also, if the test succeeds, all link strings are added to the LDFLAGS
+# written to config.mak.
+# language: "c" for C, "m" for Objective-C.
+def check_cc(include = None, decl = None, expr = None, defined = None,
+ flags = None, link = None, language = "c"):
+ assert language in ["c", "m"]
+
+ use_linking = link is not None
+
+ contents = ""
+ for inc in normalize_list_arg(include):
+ contents += "#include <%s>\n" % inc
+ for dec in normalize_list_arg(decl):
+ contents += "%s\n" % dec
+ for define in normalize_list_arg(defined):
+ contents += ("#ifndef %s\n" % define) + \
+ "#error failed\n" + \
+ "#endif\n"
+ if expr or use_linking:
+ contents += "int main(int argc, char **argv) {\n";
+ if expr:
+ contents += expr + "\n"
+ contents += "return 0; }\n"
+ source = os.path.join(_G.temp_path, "test." + language)
+ _G.log_file.write("--- Test file %s:\n%s" % (source, contents))
+ with open(source, "w") as f:
+ f.write(contents)
+
+ flags = normalize_list_arg(flags)
+ link = normalize_list_arg(link)
+
+ outfile = os.path.join(_G.temp_path, "test")
+ args = [get_program("CC"), source]
+ args += _G.cflags + flags
+ if use_linking:
+ args += _G.ldflags + link
+ args += ["-o%s" % outfile]
+ else:
+ args += ["-c", "-o%s.o" % outfile]
+ if _run_process(args) is None:
+ return False
+
+ _G.cflags += flags
+ _G.ldflags += link
+ return True
+
+# Run pkg-config with function arguments passed as command arguments. Typically,
+# you specify pkg-config version expressions, like "libass >= 0.14". Returns
+# success as boolean.
+# If this succeeds, the --cflags and --libs are added to CFLAGS and LDFLAGS.
+def check_pkg_config(*args):
+ args = list(args)
+ pkg_config_cmd = [get_program("PKG_CONFIG")]
+
+ cflags = _run_process(pkg_config_cmd + ["--cflags"] + args)
+ if cflags is None:
+ return False
+ ldflags = _run_process(pkg_config_cmd + ["--libs"] + args)
+ if ldflags is None:
+ return False
+
+ _G.cflags += cflags.split()
+ _G.ldflags += ldflags.split()
+ return True
+
+def get_pkg_config_variable(arg, varname):
+ typecheck(arg, str)
+ pkg_config_cmd = [get_program("PKG_CONFIG")]
+
+ res = _run_process(pkg_config_cmd + ["--variable=" + varname] + [arg])
+ if res is not None:
+ res = res.strip()
+ return res
+
+# Check for a specific build tool. You pass in a symbolic name (e.g. "CC"),
+# which is then resolved to a full name and added as variable to config.mak.
+# The function returns a bool for success. You're not supposed to use the
+# program from configure; instead you're supposed to have rules in the makefile
+# using the generated variables.
+# (Some configure checks use the program directly anyway with get_program().)
+def check_program(env_name):
+ for name, default in programs_info:
+ if name == env_name:
+ val = os.environ.get(env_name, None)
+ if val is None:
+ prefix = os.environ.get("TARGET", None)
+ if prefix is None:
+ prefix = os.environ.get("CROSS_COMPILE", "")
+ # Shitty hack: default to gcc if a prefix is given, as binutils
+ # toolchains generally provide only a -gcc wrapper.
+ if prefix and default == "cc":
+ default = "gcc"
+ val = prefix + default
+ # Interleave with output. Sort of unkosher, but dare to stop me.
+ sys.stdout.write("(%s) " % val)
+ _G.log_file.write("--- Trying '%s' for '%s'...\n" % (val, env_name))
+ try:
+ _run_process([val])
+ except OSError as err:
+ _G.log_file.write("%s\n" % err)
+ return False
+ _G.programs[env_name] = val
+ add_config_mak_var(env_name, val)
+ return True
+ assert False, "Unknown program name '%s'" % env_name
+
+# Get the resolved value for a program. Explodes in your face if there wasn't
+# a successful and merged check_program() call before.
+def get_program(env_name):
+ val = _G.programs.get(env_name, None)
+ assert val is not None, "Called get_program(%s) without successful check." % env_name
+ return val
+
+# Return whether all passed dependency identifiers are fulfilled.
+def dep_enabled(*deps):
+ for d in deps:
+ val = _G.dep_enabled.get(d, None)
+ assert val is not None, "Internal error: unknown dependency %s" % d
+ if not val:
+ return False
+ return True
+
+# Add all of the passed strings to CFLAGS.
+def add_cflags(*fl):
+ _G.cflags += list(fl)
+
+# Add a preprocessor symbol of the given name to config.h.
+# If val is a string, it's quoted as string literal.
+# If val is None, it's defined without value.
+def add_config_h_define(name, val):
+ if type(val) == type("") or type(val) == type(b""):
+ val = _c_quote_string(val)
+ if val is None:
+ val = ""
+ _G.config_h += "#define %s %s\n" % (name, val)
+
+# Add a makefile variable of the given name to config.mak.
+# If val is a string, it's quoted as string literal.
+def add_config_mak_var(name, val):
+ if type(val) == type("") or type(val) == type(b""):
+ val = _c_quote_makefile_var(val)
+ _G.config_mak += "%s = %s\n" % (name, val)
+
+# Add these source files to the build.
+def add_sources(*sources):
+ _G.sources += list(sources)
+
+# Get an environment variable and parse it as flags array.
+def _get_env_flags(name):
+ res = os.environ.get(name, "").split()
+ if len(res) == 1 and len(res[0]) == 0:
+ res = []
+ return res
+
+# To be called at the end of user checks.
+def finish():
+ if not is_running():
+ return
+
+ is_fatal = False
+ for key, val in _G.feature_opts.items():
+ print("Unknown feature set on command line: %s" % key)
+ if val == "yes":
+ is_fatal = True
+ if is_fatal:
+ die("Unknown feature was force-enabled.")
+
+ _G.config_h += "\n"
+ add_config_h_define("CONFIGURATION", " ".join(sys.argv))
+ add_config_h_define("MPV_CONFDIR", "$(CONFLOADDIR)")
+ enabled_features = [x[0] for x in filter(lambda x: x[1], _G.dep_enabled.items())]
+ add_config_h_define("FULLCONFIG", " ".join(sorted(enabled_features)))
+
+ with open(os.path.join(_G.build_dir, "config.h"), "w") as f:
+ f.write(_G.config_h)
+
+ add_config_mak_var("BUILD", _G.build_dir)
+ add_config_mak_var("ROOT", _G.root_dir)
+ _G.config_mak += "\n"
+
+ add_config_mak_var("EXESUF", ".exe" if _G.exe_format == "pe" else "")
+
+ for name, _ in install_paths_info:
+ add_config_mak_var(name, _G.install_paths[name])
+ _G.config_mak += "\n"
+
+ _G.config_mak += "CFLAGS = %s %s %s\n" % (" ".join(_G.cflags),
+ os.environ.get("CPPFLAGS", ""),
+ os.environ.get("CFLAGS", ""))
+ _G.config_mak += "\n"
+ _G.config_mak += "LDFLAGS = %s %s\n" % (" ".join(_G.ldflags),
+ os.environ.get("LDFLAGS", ""))
+ _G.config_mak += "\n"
+
+ sources = []
+ for s in _G.sources:
+ # Prefix all source files with "$(ROOT)/". This is important for out of
+ # tree builds, where configure/make is run from "somewhere else", and
+ # not the source directory.
+ # Generated sources need to be prefixed with "$(BUILD)/" (for the same
+ # reason). Since we do not know whether a source file is generated, the
+ # convention is that the user takes care of prefixing it.
+ if not s.startswith("$(BUILD)"):
+ assert not s.startswith("$") # no other variables which make sense
+ assert not s.startswith("generated/") # requires $(BUILD) prefix
+ s = "$(ROOT)/%s" % s
+ sources.append(s)
+
+ _G.config_mak += "SOURCES = \\\n"
+ for s in sorted(list(set(sources))):
+ _G.config_mak += " %s \\\n" % s
+
+ _G.config_mak += "\n"
+
+ with open(os.path.join(_G.build_dir, "config.mak"), "w") as f:
+ f.write("# Generated by configure.\n\n" + _G.config_mak)
+
+ if _G.out_of_tree:
+ try:
+ os.symlink(os.path.join(_G.root_dir, "Makefile.new"), "Makefile")
+ except FileExistsError:
+ print("Not overwriting existing Makefile.")
+
+ _G.log_file.write("--- Finishing successfully.\n")
+ print("Done. You can run 'make' now.")
+
+# Return whether to actually run configure tests, and whether results of those
+# tests are available.
+def is_running():
+ return not _G.help_mode
+
+# Each argument is an array or tuple, with the first element giving the
+# dependency identifier, or "_" to match always fulfilled. The elements after
+# this are added as source files if the dependency matches. This stops after
+# the first matching argument.
+def pick_first_matching_dep(*deps):
+ winner = None
+ for e in deps:
+ if (e[0] == "_" or dep_enabled(e[0])) and (winner is None):
+ # (the odd indirection though winner is so that all dependency
+ # identifiers are checked for existence)
+ winner = e[1:]
+ if winner is not None:
+ add_sources(*winner)