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import os
import textwrap
# Python 2 compatibility.
try:
from shlex import quote
except:
from pipes import quote
# Generate .pc file for roc.
# This function uses information accumulated by:
# - AddPkgConfigDependency - list of .pc files of system dependencies
# - AddManualDependency - list of libs and search paths of system dependencies
# (for cases when system dependency does not have .pc file)
# All this information is included into resulting .pc file.
# To work properly, GeneratePkgConfig should be called after aforementioned functions.
def GeneratePkgConfig(env, build_dir, filename, prefix, libdir, name, desc, url, version):
target = os.path.join(build_dir, filename)
dep_list = env.get('_DEPS_PCFILES', [])
lib_list = \
['roc'] + \
env.get('_DEPS_LIBS', [])
libdir_list = \
[libdir] + \
env.get('_DEPS_LIBPATH', [])
incdir_list = \
[prefix+'/include'] + \
env.get('_DEPS_CPPPATH', [])
src = textwrap.dedent("""\
prefix={prefix}
exec_prefix=${{prefix}}
Name: {name}
Description: {desc}
URL: {url}
Version: {version}
Requires: {deps}
Libs: {libdirs} {libs}
Cflags: {incdirs}
""").format(
prefix=prefix,
name=name,
desc=desc,
url=url,
version=version,
deps=' '.join(dep_list),
libs=' '.join(['-l'+s for s in lib_list]),
libdirs=' '.join(['-L'+quote(s) for s in libdir_list]),
incdirs=' '.join(['-I'+quote(s) for s in incdir_list]))
def write_file(target, source, env):
f = open(target[0].path, 'w')
f.write(src)
f.close()
env.Command(target, [], [
env.Action(write_file, env.PrettyCommand('GEN', env.File(target).path, 'purple')),
])
return env.File(target)
# Add system dependency manually. Used as fallback when AddPkgConfigDependency did not
# work or can't be used.
# If libs arg is provided, libs are added to linker options.
# If prefix arg is provided, and it defines a dir which has include and lib subdirs,
# those subdirs are added to the headers and library search paths.
# This function also automatically informs GeneratePkgConfig that correspondings
# paths and libs should be added to .pc file.
def AddManualDependency(env, libs=[], prefix=None, exclude_from_pc=False):
def _append_var(var, values):
if var not in env.Dictionary():
env[var] = []
env.AppendUnique(**{var: values})
if libs:
_append_var('LIBS', libs)
if not exclude_from_pc:
_append_var('_DEPS_LIBS', libs)
if prefix:
lib_dir = os.path.join(prefix, 'lib')
if os.path.isdir(lib_dir):
_append_var('LIBPATH', [lib_dir])
if not exclude_from_pc:
_append_var('_DEPS_LIBPATH', [lib_dir])
inc_dir = os.path.join(prefix, 'include')
if os.path.isdir(inc_dir):
_append_var('CPPPATH', [inc_dir])
if not exclude_from_pc:
_append_var('_DEPS_CPPPATH', [inc_dir])
# Find and return path to the package (its install prefix directory) of the latest version
# of `pkg_name` package installed by brew. If not found, None is returned.
def FindBrewPackage(env, pkg_name):
if not env.Which('brew'):
return None
brew_prefix = env.GetCommandOutput('brew --prefix')
if not brew_prefix:
return None
# if pkg-config is not from brew, then don't try to use brew packages implicitly,
# that's likely not what the user wants
pkg_config = env.get('PKG_CONFIG', None)
if not pkg_config or \
not env.Which(pkg_config) or \
not os.path.abspath(env.Which(pkg_config)[0]).startswith(
os.path.abspath(brew_prefix)+os.sep):
return None
# $(brew --prefix)/opt/some_pkg should be a link to the latest version of some_pkg,
# e.g. ../Cellar/some_pkg@1.2/1.2.3/
pkg_prefix = os.path.join(brew_prefix, 'opt', pkg_name)
if not os.path.isdir(pkg_prefix):
return None
return pkg_prefix
def init(env):
env.AddMethod(GeneratePkgConfig, 'GeneratePkgConfig')
env.AddMethod(AddManualDependency, 'AddManualDependency')
env.AddMethod(FindBrewPackage, 'FindBrewPackage')
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