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# -*- Mode: python; indent-tabs-mode: nil; tab-width: 40 -*-
# vim: set filetype=python:
# This Source Code Form is subject to the terms of the Mozilla Public
# License, v. 2.0. If a copy of the MPL was not distributed with this
@depends(toolchain_prefix, when=compile_environment)
def pkg_config(prefixes):
return tuple("{}pkg-config".format(p) for p in (prefixes or ()) + ("",))
@depends(compile_environment, target)
def use_pkg_config(compile_environment, target):
return compile_environment and target.os not in ("WINNT", "OSX", "Android")
pkg_config = check_prog(
"PKG_CONFIG",
pkg_config,
bootstrap=depends(when=target_sysroot.bootstrapped)(lambda: "pkgconf"),
allow_missing=True,
when=use_pkg_config,
)
@depends_if(pkg_config)
@checking("for pkg-config version")
def pkg_config_version(pkg_config):
return Version(check_cmd_output(pkg_config, "--version").rstrip())
@depends_if(pkg_config)
@checking("whether pkg-config is pkgconf")
def is_pkgconf(pkg_config):
return "pkgconf " in check_cmd_output(pkg_config, "--about", onerror=lambda: "")
@depends(is_pkgconf, pkg_config_version, target_sysroot.bootstrapped, when=pkg_config)
def pkg_config_base_flags(is_pkgconf, pkg_config_version, target_sysroot_bootstrapped):
# pkgconf 1.7.4 changed the default on Windows to use --static, but
# that doesn't work for us.
# Note: the --shared flag is not available before pkgconf 1.7
flags = []
if is_pkgconf and pkg_config_version >= "1.7.4":
flags.append("--shared")
# When pkg-config is in /usr things work fine by default, but when
# it is not, it defines prefix to be something else than /usr, which
# won't match what the .pc files actually say, and won't work in
# sysroots.
if target_sysroot_bootstrapped and (
(is_pkgconf and pkg_config_version >= "1.2.0")
or (not is_pkgconf and pkg_config_version >= "0.29.0")
):
flags.append("--dont-define-prefix")
return tuple(flags)
@depends(target, target_sysroot.path, target_multiarch_dir, when=pkg_config)
@imports(_from="os", _import="environ")
@imports(_from="os", _import="pathsep")
def pkg_config_vars(target, sysroot_path, multiarch_dir):
if sysroot_path and target.kernel != "Darwin":
pkgconfig_dirs = [
"usr/lib/pkgconfig",
"usr/lib/{}/pkgconfig".format(multiarch_dir),
"usr/share/pkgconfig",
]
if target.bitness == 64:
pkgconfig_dirs.insert(0, "usr/lib64/pkgconfig")
return namespace(
PKG_CONFIG_PATH="",
PKG_CONFIG_SYSROOT_DIR=sysroot_path,
PKG_CONFIG_LIBDIR=pathsep.join(
os.path.join(sysroot_path, d) for d in pkgconfig_dirs
),
)
@depends(pkg_config_vars)
@imports(_from="os", _import="environ")
def pkg_config_env(vars):
if vars:
env = dict(environ)
env["PKG_CONFIG_PATH"] = vars.PKG_CONFIG_PATH
env["PKG_CONFIG_SYSROOT_DIR"] = vars.PKG_CONFIG_SYSROOT_DIR
env["PKG_CONFIG_LIBDIR"] = vars.PKG_CONFIG_LIBDIR
return env
set_config("PKG_CONFIG_PATH", pkg_config_vars.PKG_CONFIG_PATH)
set_config("PKG_CONFIG_SYSROOT_DIR", pkg_config_vars.PKG_CONFIG_SYSROOT_DIR)
set_config("PKG_CONFIG_LIBDIR", pkg_config_vars.PKG_CONFIG_LIBDIR)
# Locates the given module using pkg-config.
# - `var` determines the name of variables to set when the package is found.
# <var>_CFLAGS and <var>_LIBS are set with corresponding values.
# - `package_desc` package name and version requirement string, list of
# strings describing packages to locate, or depends function that will
# resolve to such a string or list of strings.
# - `when` a depends function that will determine whether to perform
# any checks (default is to always perform checks).
# - `allow_missing` If set, failure to fulfill the package description
# will not result in an error or logged message, and any error message
# will be returned to the caller.
# Returns `True` when the package description is fulfilled.
@template
def pkg_check_modules(
var,
package_desc,
when=always,
allow_missing=False,
config=True,
cflags_only=False,
):
@depends(dependable(package_desc), when=when)
def package_desc(desc):
if isinstance(desc, str):
desc = [desc]
if not isinstance(desc, (tuple, list)):
configure_error(
"package_desc must be a string or a tuple or list of strings"
)
return " ".join(desc)
allow_missing = dependable(allow_missing)
@depends(when, when=use_pkg_config)
def when_and_use_pkg_config(when):
return when
@depends(pkg_config, pkg_config_version, when=when_and_use_pkg_config)
def check_pkg_config(pkg_config, version):
min_version = "0.9.0"
if pkg_config is None:
die(
"*** The pkg-config script could not be found. Make sure it is\n"
"*** in your path, or set the PKG_CONFIG environment variable\n"
"*** to the full path to pkg-config."
)
if version < min_version:
die(
"*** Your version of pkg-config is too old. You need version %s or newer.",
min_version,
)
@depends(
pkg_config,
pkg_config_env,
package_desc,
allow_missing,
when=when_and_use_pkg_config,
)
@imports("sys")
@imports(_from="mozbuild.configure.util", _import="LineIO")
def package(pkg_config, env, package_desc, allow_missing):
# package_desc may start as a depends function, so we can't use
# @checking here.
log.info("checking for %s... " % package_desc)
retcode, stdout, stderr = get_cmd_output(
pkg_config,
"--errors-to-stdout",
"--print-errors",
package_desc,
env=env,
)
if retcode == 0:
log.info("yes")
return True
log.info("no")
log_writer = log.warning if allow_missing else log.error
with LineIO(lambda l: log_writer(l)) as o:
o.write(stdout)
if not allow_missing:
sys.exit(1)
@depends(
pkg_config, pkg_config_env, package_desc, pkg_config_base_flags, when=package
)
@checking("%s_CFLAGS" % var, callback=lambda t: " ".join(t))
def pkg_cflags(pkg_config, env, package_desc, base_flags):
args = list(base_flags) + ["--cflags", package_desc]
flags = check_cmd_output(pkg_config, *args, env=env)
return tuple(flags.split())
if cflags_only:
@depends(pkg_cflags, when=package)
def pkg_info(cflags):
return namespace(cflags=cflags)
else:
@depends(
pkg_config,
pkg_config_env,
package_desc,
pkg_config_base_flags,
when=package,
)
@checking("%s_LIBS" % var, callback=lambda t: " ".join(t))
def pkg_libs(pkg_config, env, package_desc, base_flags):
args = list(base_flags) + ["--libs", package_desc]
libs = check_cmd_output(pkg_config, *args, env=env)
# Remove evil flags like -Wl,--export-dynamic
return tuple(libs.replace("-Wl,--export-dynamic", "").split())
@depends(pkg_cflags, pkg_libs, when=package)
def pkg_info(cflags, libs):
return namespace(cflags=cflags, libs=libs)
if config:
set_config("%s_CFLAGS" % var, pkg_cflags)
if not cflags_only:
set_config("%s_LIBS" % var, pkg_libs)
return pkg_info