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# handle substitution of variables in pc files
import os, re, sys
from waflib import Build, Logs
from samba_utils import SUBST_VARS_RECURSIVE, TO_LIST
def subst_at_vars(task):
'''substiture @VAR@ style variables in a file'''
s = task.inputs[0].read()
# 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)
task.outputs[0].write(contents)
return 0
def PKG_CONFIG_FILES(bld, pc_files, vnum=None, extra_name=None):
'''install some pkg_config pc files'''
dest = '${PKGCONFIGDIR}'
dest = bld.EXPAND_VARIABLES(dest)
for f in TO_LIST(pc_files):
if extra_name:
target = f.split('.pc')[0] + extra_name + ".pc"
else:
target = f
base=os.path.basename(target)
t = bld.SAMBA_GENERATOR('PKGCONFIG_%s' % base,
rule=subst_at_vars,
source=f+'.in',
target=target)
bld.add_manual_dependency(bld.path.find_or_declare(f), bld.env['PREFIX'].encode('utf8'))
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, target, flat=True, destname=base)
Build.BuildContext.PKG_CONFIG_FILES = PKG_CONFIG_FILES
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