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# handle substitution of variables in pc files
import Build
from samba_utils import *
def subst_at_vars(task):
'''substiture @VAR@ style variables in a file'''
src = task.inputs[0].srcpath(task.env)
tgt = task.outputs[0].bldpath(task.env)
f = open(src, 'r')
s = f.read()
f.close()
# split on the vars
a = re.split('(@\w+@)', s)
out = []
done_var = {}
back_sub = [ ('PREFIX', '${prefix}'), ('EXEC_PREFIX', '${exec_prefix}')]
for v in a:
if re.match('@\w+@', v):
vname = v[1:-1]
if not vname in task.env and vname.upper() in task.env:
vname = vname.upper()
if not vname in task.env:
Logs.error("Unknown substitution %s in %s" % (v, task.name))
sys.exit(1)
v = SUBST_VARS_RECURSIVE(task.env[vname], task.env)
# now we back substitute the allowed pc vars
for (b, m) in back_sub:
s = task.env[b]
if s == v[0:len(s)]:
if not b in done_var:
# we don't want to substitute the first usage
done_var[b] = True
else:
v = m + v[len(s):]
break
out.append(v)
contents = ''.join(out)
f = open(tgt, 'w')
s = f.write(contents)
f.close()
return 0
def PKG_CONFIG_FILES(bld, pc_files, vnum=None):
'''install some pkg_config pc files'''
dest = '${PKGCONFIGDIR}'
dest = bld.EXPAND_VARIABLES(dest)
for f in TO_LIST(pc_files):
base=os.path.basename(f)
t = bld.SAMBA_GENERATOR('PKGCONFIG_%s' % base,
rule=subst_at_vars,
source=f+'.in',
target=f)
t.vars = []
if t.env.RPATH_ON_INSTALL:
t.env.LIB_RPATH = t.env.RPATH_ST % t.env.LIBDIR
else:
t.env.LIB_RPATH = ''
if vnum:
t.env.PACKAGE_VERSION = vnum
for v in [ 'PREFIX', 'EXEC_PREFIX', 'LIB_RPATH' ]:
t.vars.append(t.env[v])
bld.INSTALL_FILES(dest, f, flat=True, destname=base)
Build.BuildContext.PKG_CONFIG_FILES = PKG_CONFIG_FILES
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